From 71b2c441bb236fd43a1695e80af68ef750cddd0c Mon Sep 17 00:00:00 2001 From: Jim Huang Date: Fri, 25 Jun 2021 10:09:19 +0800 Subject: [PATCH 01/60] CI: Update the macOS image to version 10.15 --- azure-pipelines.yml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/azure-pipelines.yml b/azure-pipelines.yml index aeb2908b..65ceb30b 100644 --- a/azure-pipelines.yml +++ b/azure-pipelines.yml @@ -115,7 +115,7 @@ jobs: displayName: macOS pool: vmImage: - macOS-10.14 + macOS-10.15 strategy: matrix: Debug: From c4947c887903ab216589a763013d2b22cf6457ac Mon Sep 17 00:00:00 2001 From: Jim Huang Date: Sat, 24 Apr 2021 06:24:06 +0800 Subject: [PATCH 02/60] Use secure random generator on macOS The implementation of arc4random_buf differs from its documentation. It is documented as "always successful, and no return value is reserved to indicate an error" for the sake of FreeBSD compatibility [1]. However, the actual implementation on macOS invokes function "ccrng_generate" [2] without validating the error cases. It might fail silently[3], which leads to unexpected source of entropy. The original arc4random used the RC4 a.k.a. ARC4 algorithm, and ChaCha20 based implementation was introduced in FreeBSD 12.0. Since macOS 10.12, it was replaced with the NIST-approved AES cipher, and it may be replaced again in the future as cryptographic techniques advance. Therefore, we should not assume that arc4random never fails. On the contrary, CCRandomGenerateBytes(), part of Cryptographic Services [4], returns cryptographically strong random bits with explicit status code. This patch properly calls CCRandomGenerateBytes() and checks the status. [1] https://www.freebsd.org/cgi/man.cgi?query=arc4random_buf [2] https://opensource.apple.com/source/CommonCrypto/CommonCrypto-60178.40.2/lib/CommonRandom.c.auto.html [3] https://opensource.apple.com/source/Libc/Libc-1439.40.11/gen/FreeBSD/arc4random.c.auto.html [4] https://developer.apple.com/documentation/security --- src/random.c | 34 ++++++++++++++++++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) diff --git a/src/random.c b/src/random.c index 255bede4..910a3e89 100644 --- a/src/random.c +++ b/src/random.c @@ -156,7 +156,8 @@ uintptr_t _mi_random_next(mi_random_ctx_t* ctx) { /* ---------------------------------------------------------------------------- To initialize a fresh random context we rely on the OS: - Windows : BCryptGenRandom (or RtlGenRandom) -- osX,bsd,wasi: arc4random_buf +- macOS : CCRandomGenerateBytes +- bsd,wasi : arc4random_buf - Linux : getrandom,/dev/urandom If we cannot get good randomness, we fall back to weak randomness based on a timer and ASLR. -----------------------------------------------------------------------------*/ @@ -186,7 +187,36 @@ static bool os_random_buf(void* buf, size_t buf_len) { } #endif -#elif defined(ANDROID) || defined(XP_DARWIN) || defined(__APPLE__) || defined(__DragonFly__) || \ +#elif defined(__APPLE__) +#include +#if defined(MAC_OS_X_VERSION_10_10) && \ + MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_10 +#include +#endif +static bool os_random_buf(void* buf, size_t buf_len) { + /* The implementation of arc4random_buf(3) differs from its documentation. + * It is documented as "always successful, and no return value is reserved + * to indicate an error." However, the actual implementation invokes the + * function "ccrng_generate" without validating the error cases. It might + * fail silently, which leads to unexpected source of entropy. + * See: + * https://opensource.apple.com/source/Libc/Libc-1439.40.11/gen/FreeBSD/arc4random.c.auto.html + * + * CCRandomGenerateBytes(), on the contrary, returns cryptographically strong + * random bits with explicit status code. + */ +#if defined(MAC_OS_X_VERSION_10_15) && \ + MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_15 + return CCRandomGenerateBytes(buf, buf_len) == kCCSuccess; +#else + /* Prior to macOS 10.15, CCRandomGenerateBytes() might take a bit longer time + * to complete, so failback to arc4random_buf(). + */ + arc4random_buf(buf, buf_len); + return true; +#endif +} +#elif defined(ANDROID) || defined(__DragonFly__) || \ defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \ defined(__sun) || defined(__wasi__) #include From 20e37bf7c1ce89515b38bb82aa6b8b3838b9c456 Mon Sep 17 00:00:00 2001 From: DC Date: Sun, 28 Nov 2021 08:14:21 +0000 Subject: [PATCH 03/60] removes dragonflybsd warning since the api and library overriding works, also for the os doc report purpose. --- include/mimalloc-internal.h | 3 --- 1 file changed, 3 deletions(-) diff --git a/include/mimalloc-internal.h b/include/mimalloc-internal.h index cf5b6783..e22953d4 100644 --- a/include/mimalloc-internal.h +++ b/include/mimalloc-internal.h @@ -314,9 +314,6 @@ mi_heap_t* _mi_heap_main_get(void); // statically allocated main backing hea // use end bytes of a name; goes wrong if anyone uses names > 23 characters (ptrhread specifies 16) // see #define MI_TLS_PTHREAD_SLOT_OFS (6*sizeof(int) + 4*sizeof(void*) + 24) -#elif defined(__DragonFly__) -#warning "mimalloc is not working correctly on DragonFly yet." -//#define MI_TLS_PTHREAD_SLOT_OFS (4 + 1*sizeof(void*)) // offset `uniqueid` (also used by gdb?) #endif #endif From d6a56dd99d5abe4e1f6af555976ee8dc64e1ec8a Mon Sep 17 00:00:00 2001 From: David Carlier Date: Wed, 1 Dec 2021 22:43:13 +0000 Subject: [PATCH 04/60] introduces netbsd's reallocarr overriding. and couple of tests. --- include/mimalloc-override.h | 1 + include/mimalloc.h | 1 + src/alloc-override.c | 1 + src/alloc-posix.c | 14 ++++++++++++++ test/main-override.c | 8 +++++++- 5 files changed, 24 insertions(+), 1 deletion(-) diff --git a/include/mimalloc-override.h b/include/mimalloc-override.h index 2362bfbc..c00fc594 100644 --- a/include/mimalloc-override.h +++ b/include/mimalloc-override.h @@ -48,6 +48,7 @@ not accidentally mix pointers from different allocators). #define valloc(n) mi_valloc(n) #define pvalloc(n) mi_pvalloc(n) #define reallocarray(p,s,n) mi_reallocarray(p,s,n) +#define reallocarr(p,s,n) mi_reallocarr(p,s,n) #define memalign(a,n) mi_memalign(a,n) #define aligned_alloc(a,n) mi_aligned_alloc(a,n) #define posix_memalign(p,a,n) mi_posix_memalign(p,a,n) diff --git a/include/mimalloc.h b/include/mimalloc.h index a2835d02..414d628d 100644 --- a/include/mimalloc.h +++ b/include/mimalloc.h @@ -351,6 +351,7 @@ mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_pvalloc(size_t size) mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_aligned_alloc(size_t alignment, size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2) mi_attr_alloc_align(1); mi_decl_nodiscard mi_decl_export void* mi_reallocarray(void* p, size_t count, size_t size) mi_attr_noexcept mi_attr_alloc_size2(2,3); +mi_decl_nodiscard mi_decl_export int mi_reallocarr(void* p, size_t count, size_t size) mi_attr_noexcept mi_attr_alloc_size2(2,3); mi_decl_nodiscard mi_decl_export void* mi_aligned_recalloc(void* p, size_t newcount, size_t size, size_t alignment) mi_attr_noexcept; mi_decl_nodiscard mi_decl_export void* mi_aligned_offset_recalloc(void* p, size_t newcount, size_t size, size_t alignment, size_t offset) mi_attr_noexcept; diff --git a/src/alloc-override.c b/src/alloc-override.c index 5906bd20..d24cd8bc 100644 --- a/src/alloc-override.c +++ b/src/alloc-override.c @@ -183,6 +183,7 @@ size_t malloc_usable_size(const void *p) MI_FORWARD1(mi_usable_size,p); void* valloc(size_t size) { return mi_valloc(size); } void* pvalloc(size_t size) { return mi_pvalloc(size); } void* reallocarray(void* p, size_t count, size_t size) { return mi_reallocarray(p, count, size); } +int reallocarr(void* p, size_t count, size_t size) { return mi_reallocarr(&p, count, size); } void* memalign(size_t alignment, size_t size) { return mi_memalign(alignment, size); } int posix_memalign(void** p, size_t alignment, size_t size) { return mi_posix_memalign(p, alignment, size); } void* _aligned_malloc(size_t alignment, size_t size) { return mi_aligned_alloc(alignment, size); } diff --git a/src/alloc-posix.c b/src/alloc-posix.c index eef70ab5..6465304c 100644 --- a/src/alloc-posix.c +++ b/src/alloc-posix.c @@ -90,6 +90,20 @@ void* mi_reallocarray( void* p, size_t count, size_t size ) mi_attr_noexcept { return newp; } +int mi_reallocarr( void* p, size_t count, size_t size ) mi_attr_noexcept { // NetBSD + void** op = (void** )p; + int serrno = errno; + void* newp = mi_reallocn(p,count,size); + if (mi_unlikely(newp == NULL)) { + errno = ENOMEM; + return errno; + } else { + *op = newp; + errno = serrno; + return 0; + } +} + void* mi__expand(void* p, size_t newsize) mi_attr_noexcept { // Microsoft void* res = mi_expand(p, newsize); if (res == NULL) errno = ENOMEM; diff --git a/test/main-override.c b/test/main-override.c index 1bec1179..284fdd20 100644 --- a/test/main-override.c +++ b/test/main-override.c @@ -3,7 +3,7 @@ #include #include -#include +#include int main() { mi_version(); // ensure mimalloc library is linked @@ -25,6 +25,12 @@ int main() { //free(p1); //p2 = malloc(32); //mi_free(p2); + p1 = malloc(24); + p2 = reallocarray(p1, 16, 16); + free(p2); + p1 = malloc(24); + assert(reallocarr(&p1, 16, 16) == 0); + free(p1); mi_stats_print(NULL); return 0; } From ee3ae2a425c900cb3e2c7a71740c8657cdd109b0 Mon Sep 17 00:00:00 2001 From: daan Date: Wed, 15 Dec 2021 08:53:55 -0800 Subject: [PATCH 05/60] add deprecated notice --- CMakeLists.txt | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/CMakeLists.txt b/CMakeLists.txt index 6b2e9b83..4d52a72d 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -21,9 +21,11 @@ option(MI_BUILD_OBJECT "Build object library" ON) option(MI_BUILD_TESTS "Build test executables" ON) option(MI_DEBUG_TSAN "Build with thread sanitizer (needs clang)" OFF) option(MI_DEBUG_UBSAN "Build with undefined-behavior sanitizer (needs clang++)" OFF) + +# deprecated options option(MI_CHECK_FULL "Use full internal invariant checking in DEBUG mode (deprecated, use MI_DEBUG_FULL instead)" OFF) -option(MI_INSTALL_TOPLEVEL "Install directly into $CMAKE_INSTALL_PREFIX instead of PREFIX/lib/mimalloc-version" OFF) -option(MI_USE_LIBATOMIC "Explicitly link with -latomic (on older systems)" OFF) +option(MI_INSTALL_TOPLEVEL "Install directly into $CMAKE_INSTALL_PREFIX instead of PREFIX/lib/mimalloc-version (deprecated)" OFF) +option(MI_USE_LIBATOMIC "Explicitly link with -latomic (on older systems) (deprecated and detected automatically)" OFF) include(GNUInstallDirs) include("cmake/mimalloc-config-version.cmake") From 523e6d5c9b251bc8d969a685b2b6feda6fd1f8ab Mon Sep 17 00:00:00 2001 From: Daan Date: Wed, 15 Dec 2021 16:05:07 -0800 Subject: [PATCH 06/60] fix thread slot on arm32 (issue #495) --- include/mimalloc-internal.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/mimalloc-internal.h b/include/mimalloc-internal.h index 4713a75e..324ad4a3 100644 --- a/include/mimalloc-internal.h +++ b/include/mimalloc-internal.h @@ -766,8 +766,8 @@ static inline void mi_tls_slot_set(size_t slot, void* value) mi_attr_noexcept { } static inline mi_threadid_t _mi_thread_id(void) mi_attr_noexcept { -#if defined(__BIONIC__) && (defined(__arm__) || defined(__aarch64__)) - // on Android, slot 1 is the thread ID (pointer to pthread internal struct) +#if defined(__arm__) || (defined(__BIONIC__) && defined(__aarch64__)) + // issue #384, #495: on arm32 and arm32/arm64 Android, slot 1 is the thread ID (pointer to pthread internal struct) return (uintptr_t)mi_tls_slot(1); #else // in all our other targets, slot 0 is the pointer to the thread control block From 9fbf83c4332da1cd1b788a7592d0f80ca52c6b1b Mon Sep 17 00:00:00 2001 From: Daan Date: Wed, 15 Dec 2021 16:32:26 -0800 Subject: [PATCH 07/60] fix reallocarr indirection (see #492) --- src/alloc-posix.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/src/alloc-posix.c b/src/alloc-posix.c index 6627d2b7..2eaede07 100644 --- a/src/alloc-posix.c +++ b/src/alloc-posix.c @@ -92,27 +92,23 @@ mi_decl_restrict void* mi_aligned_alloc(size_t alignment, size_t size) mi_attr_n void* mi_reallocarray( void* p, size_t count, size_t size ) mi_attr_noexcept { // BSD void* newp = mi_reallocn(p,count,size); - if (newp==NULL) errno = ENOMEM; + if (newp==NULL) { errno = ENOMEM; } return newp; } int mi_reallocarr( void* p, size_t count, size_t size ) mi_attr_noexcept { // NetBSD - void** op = (void** )p; - int serrno = errno; - void* newp = mi_reallocn(p,count,size); - if (mi_unlikely(newp == NULL)) { - errno = ENOMEM; - return errno; - } else { - *op = newp; - errno = serrno; - return 0; - } + mi_assert(p != NULL); + if (p == NULL) return EINVAL; // should we set errno as well? + void** op = (void**)p; + void* newp = mi_reallocarray(*op, count, size); + if (mi_unlikely(newp == NULL)) return errno; + *op = newp; + return 0; } void* mi__expand(void* p, size_t newsize) mi_attr_noexcept { // Microsoft void* res = mi_expand(p, newsize); - if (res == NULL) errno = ENOMEM; + if (res == NULL) { errno = ENOMEM; } return res; } From a8b5106ce21bd8ac957249c5a67f80b6eee52187 Mon Sep 17 00:00:00 2001 From: Daan Date: Wed, 15 Dec 2021 16:33:49 -0800 Subject: [PATCH 08/60] fix address dereference in mi_reallocarr override --- src/alloc-override.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/alloc-override.c b/src/alloc-override.c index eab202aa..6bbe4aac 100644 --- a/src/alloc-override.c +++ b/src/alloc-override.c @@ -245,7 +245,7 @@ extern "C" { void cfree(void* p) { mi_free(p); } void* pvalloc(size_t size) { return mi_pvalloc(size); } void* reallocarray(void* p, size_t count, size_t size) { return mi_reallocarray(p, count, size); } -int reallocarr(void* p, size_t count, size_t size) { return mi_reallocarr(&p, count, size); } +int reallocarr(void* p, size_t count, size_t size) { return mi_reallocarr(p, count, size); } void* memalign(size_t alignment, size_t size) { return mi_memalign(alignment, size); } void* _aligned_malloc(size_t alignment, size_t size) { return mi_aligned_alloc(alignment, size); } From 317093d78b9dea347ceeaf15775c74e78e0e5fc7 Mon Sep 17 00:00:00 2001 From: Daan Date: Wed, 15 Dec 2021 16:48:57 -0800 Subject: [PATCH 09/60] fix Android overriding (issue #381 and PR #487) --- include/mimalloc-internal.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/include/mimalloc-internal.h b/include/mimalloc-internal.h index 324ad4a3..b8fc754f 100644 --- a/include/mimalloc-internal.h +++ b/include/mimalloc-internal.h @@ -317,6 +317,9 @@ mi_heap_t* _mi_heap_main_get(void); // statically allocated main backing hea #elif defined(__DragonFly__) #warning "mimalloc is not working correctly on DragonFly yet." //#define MI_TLS_PTHREAD_SLOT_OFS (4 + 1*sizeof(void*)) // offset `uniqueid` (also used by gdb?) +#elif defined(__ANDROID__) +// See issue #381 +#define MI_TLS_PTHREAD #endif #endif @@ -766,7 +769,7 @@ static inline void mi_tls_slot_set(size_t slot, void* value) mi_attr_noexcept { } static inline mi_threadid_t _mi_thread_id(void) mi_attr_noexcept { -#if defined(__arm__) || (defined(__BIONIC__) && defined(__aarch64__)) +#if defined(__arm__) || (defined(__ANDROID__) && defined(__aarch64__)) // issue #384, #495: on arm32 and arm32/arm64 Android, slot 1 is the thread ID (pointer to pthread internal struct) return (uintptr_t)mi_tls_slot(1); #else From 0e851de2babfc32cfe85963f75c20f17dba6f4c5 Mon Sep 17 00:00:00 2001 From: Daan Date: Wed, 15 Dec 2021 17:06:09 -0800 Subject: [PATCH 10/60] shorten comments for pr #390 --- src/random.c | 38 +++++++++++++------------------------- 1 file changed, 13 insertions(+), 25 deletions(-) diff --git a/src/random.c b/src/random.c index ff1ecced..e47946a6 100644 --- a/src/random.c +++ b/src/random.c @@ -160,7 +160,7 @@ uintptr_t _mi_random_next(mi_random_ctx_t* ctx) { /* ---------------------------------------------------------------------------- To initialize a fresh random context we rely on the OS: - Windows : BCryptGenRandom (or RtlGenRandom) -- macOS : CCRandomGenerateBytes +- macOS : CCRandomGenerateBytes, arc4random_buf - bsd,wasi : arc4random_buf - Linux : getrandom,/dev/urandom If we cannot get good randomness, we fall back to weak randomness based on a timer and ASLR. @@ -194,34 +194,22 @@ static bool os_random_buf(void* buf, size_t buf_len) { #elif defined(__APPLE__) #include -#if defined(MAC_OS_X_VERSION_10_10) && \ - MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_10 +#if defined(MAC_OS_X_VERSION_10_10) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_10 #include #endif static bool os_random_buf(void* buf, size_t buf_len) { - /* The implementation of arc4random_buf(3) differs from its documentation. - * It is documented as "always successful, and no return value is reserved - * to indicate an error." However, the actual implementation invokes the - * function "ccrng_generate" without validating the error cases. It might - * fail silently, which leads to unexpected source of entropy. - * See: - * https://opensource.apple.com/source/Libc/Libc-1439.40.11/gen/FreeBSD/arc4random.c.auto.html - * - * CCRandomGenerateBytes(), on the contrary, returns cryptographically strong - * random bits with explicit status code. - */ -#if defined(MAC_OS_X_VERSION_10_15) && \ - MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_15 - return CCRandomGenerateBytes(buf, buf_len) == kCCSuccess; -#else - /* Prior to macOS 10.15, CCRandomGenerateBytes() might take a bit longer time - * to complete, so failback to arc4random_buf(). - */ - arc4random_buf(buf, buf_len); - return true; -#endif + #if defined(MAC_OS_X_VERSION_10_15) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_15 + // We prefere CCRandomGenerateBytes as it returns an error code while arc4random_buf + // may fail silently on macOS. See PR #390, and + return (CCRandomGenerateBytes(buf, buf_len) == kCCSuccess); + #else + // fall back on older macOS + arc4random_buf(buf, buf_len); + return true; + #endif } -#elif defined(ANDROID) || defined(__DragonFly__) || \ + +#elif defined(__ANDROID__) || defined(__DragonFly__) || \ defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \ defined(__sun) // todo: what to use with __wasi__? #include From 8612d1228a76c306898e784fe0a1829ab67d4cd2 Mon Sep 17 00:00:00 2001 From: Daan Date: Wed, 15 Dec 2021 18:04:02 -0800 Subject: [PATCH 11/60] wip: initial fix for race condition on sbrk/wasm_memory_grow; issue #497 --- src/os.c | 87 +++++++++++++++++++++++++++++++++++--------------------- 1 file changed, 55 insertions(+), 32 deletions(-) diff --git a/src/os.c b/src/os.c index 603ec04a..dc2afc78 100644 --- a/src/os.c +++ b/src/os.c @@ -375,42 +375,69 @@ static void* mi_win_virtual_alloc(void* addr, size_t size, size_t try_alignment, return p; } -#elif defined(MI_USE_SBRK) +#elif defined(MI_USE_SBRK) || defined(__wasi__) + +#if defined(MI_USE_SBRK) #define MI_SBRK_FAIL ((void*)(-1)) -static void* mi_sbrk_heap_grow(size_t size, size_t try_alignment) { - void* pbase0 = sbrk(0); - if (pbase0 == MI_SBRK_FAIL) { +static void* mi_memory_grow( size_t size ) { + void* p = sbrk(size); + if (p == MI_SBRK_FAIL) { _mi_warning_message("unable to allocate sbrk() OS memory (%zu bytes)\n", size); errno = ENOMEM; return NULL; } - uintptr_t base = (uintptr_t)pbase0; - uintptr_t aligned_base = _mi_align_up(base, (uintptr_t) try_alignment); - size_t alloc_size = _mi_align_up( aligned_base - base + size, _mi_os_page_size()); - mi_assert(alloc_size >= size && (alloc_size % _mi_os_page_size()) == 0); - if (alloc_size < size) return NULL; - void* pbase1 = sbrk(alloc_size); - if (pbase1 == MI_SBRK_FAIL) { - _mi_warning_message("unable to allocate sbrk() OS memory (%zu bytes, %zu requested)\n", size, alloc_size); - errno = ENOMEM; - return NULL; - } - mi_assert(pbase0 == pbase1); - return (void*)aligned_base; + return p; } +#elif defined(__wasi__) +static void* mi_memory_grow( size_t size ) { + if (size > 0) { + size_t base = __builtin_wasm_memory_grow( 0, _mi_divide_up(size, _mi_os_page_size()) ); + if (base == SIZE_MAX) { + _mi_warning_message("unable to allocate wasm_memory_grow OS memory (%zu bytes)\n", size); + errno = ENOMEM; + return NULL; + } + return (void*)(base * _mi_os_page_size()); + } + else { + size_t base = __builtin_wasm_memory_size(0); + if (base == SIZE_MAX) { + errno = ENOMEM; + return NULL; + } + return (void*)(base * _mi_os_page_size()); + } +} +#endif -#elif defined(__wasi__) - // currently unused as we use sbrk() on wasm -static void* mi_wasm_heap_grow(size_t size, size_t try_alignment) { - uintptr_t base = __builtin_wasm_memory_size(0) * _mi_os_page_size(); - uintptr_t aligned_base = _mi_align_up(base, (uintptr_t) try_alignment); +static void* mi_heap_grow(size_t size, size_t try_alignment) { + if (try_alignment == 0) { try_alignment = _mi_os_page_size(); }; + void* pbase0 = mi_memory_grow(0); + if (pbase0 == NULL) { return NULL; } + uintptr_t base = (uintptr_t)pbase0; + uintptr_t aligned_base = _mi_align_up(base, try_alignment); size_t alloc_size = _mi_align_up( aligned_base - base + size, _mi_os_page_size()); mi_assert(alloc_size >= size && (alloc_size % _mi_os_page_size()) == 0); if (alloc_size < size) return NULL; - if (__builtin_wasm_memory_grow(0, alloc_size / _mi_os_page_size()) == SIZE_MAX) { - _mi_warning_message("unable to allocate wasm_memory_grow() OS memory (%zu bytes, %zu requested)\n", size, alloc_size); - errno = ENOMEM; - return NULL; + void* pbase1 = mi_memory_grow(alloc_size); + if (pbase1 == NULL) { return NULL; } + if (pbase0 != pbase1) { + // another thread allocated in-between; now we may not be able to align correctly + base = (uintptr_t)pbase1; + aligned_base = _mi_align_up(base, try_alignment); + if (aligned_base + size > base + alloc_size) { + // we do not have enough space after alignment; since we cannot shrink safely, + // we waste the space :-( and allocate fresh with guaranteed enough overallocation + alloc_size = _mi_align_up( size + try_alignment, _mi_os_page_size() ); + errno = 0; + void* pbase2 = mi_memory_grow( alloc_size ); + if (pbase2 == NULL) { return NULL; } + aligned_base = _mi_align_up(base, try_alignment); + mi_assert_internal(aligned_base + size <= (uintptr_t)pbase2 + alloc_size); + } + } + else { + mi_assert_internal(aligned_base + size <= (uintptr_t)pbase1 + alloc_size); } return (void*)aligned_base; } @@ -637,14 +664,10 @@ static void* mi_os_mem_alloc(size_t size, size_t try_alignment, bool commit, boo int flags = MEM_RESERVE; if (commit) flags |= MEM_COMMIT; p = mi_win_virtual_alloc(NULL, size, try_alignment, flags, false, allow_large, is_large); - #elif defined(MI_USE_SBRK) + #elif defined(MI_USE_SBRK) || defined(__wasi__) MI_UNUSED(allow_large); *is_large = false; - p = mi_sbrk_heap_grow(size, try_alignment); - #elif defined(__wasi__) - MI_UNUSED(allow_large); - *is_large = false; - p = mi_wasm_heap_grow(size, try_alignment); + p = mi_heap_grow(size, try_alignment); #else int protect_flags = (commit ? (PROT_WRITE | PROT_READ) : PROT_NONE); p = mi_unix_mmap(NULL, size, try_alignment, protect_flags, false, allow_large, is_large); From 82a0e56f35fcd30be09343f924a57714b2eb4744 Mon Sep 17 00:00:00 2001 From: daan Date: Wed, 15 Dec 2021 18:54:57 -0800 Subject: [PATCH 12/60] fix warning on mi_reallocarr --- include/mimalloc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/mimalloc.h b/include/mimalloc.h index 87d0e7d2..9c3e2dea 100644 --- a/include/mimalloc.h +++ b/include/mimalloc.h @@ -356,7 +356,7 @@ mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_pvalloc(size_t size) mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_aligned_alloc(size_t alignment, size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2) mi_attr_alloc_align(1); mi_decl_nodiscard mi_decl_export void* mi_reallocarray(void* p, size_t count, size_t size) mi_attr_noexcept mi_attr_alloc_size2(2,3); -mi_decl_nodiscard mi_decl_export int mi_reallocarr(void* p, size_t count, size_t size) mi_attr_noexcept mi_attr_alloc_size2(2,3); +mi_decl_nodiscard mi_decl_export int mi_reallocarr(void* p, size_t count, size_t size) mi_attr_noexcept; mi_decl_nodiscard mi_decl_export void* mi_aligned_recalloc(void* p, size_t newcount, size_t size, size_t alignment) mi_attr_noexcept; mi_decl_nodiscard mi_decl_export void* mi_aligned_offset_recalloc(void* p, size_t newcount, size_t size, size_t alignment, size_t offset) mi_attr_noexcept; From 55ccc947077ac4cfee808d17463253cfcbd0856b Mon Sep 17 00:00:00 2001 From: daan Date: Wed, 15 Dec 2021 19:28:34 -0800 Subject: [PATCH 13/60] wip: fix zero init for sbrk; add lock around sbrk --- include/mimalloc-internal.h | 7 +++- src/init.c | 7 ---- src/os.c | 73 +++++++++++++++++++++---------------- 3 files changed, 47 insertions(+), 40 deletions(-) diff --git a/include/mimalloc-internal.h b/include/mimalloc-internal.h index 44631f8b..68239573 100644 --- a/include/mimalloc-internal.h +++ b/include/mimalloc-internal.h @@ -42,6 +42,11 @@ terms of the MIT license. A copy of the license can be found in the file #define mi_decl_externc #endif +#if !defined(_WIN32) && !defined(__wasi__) +#define MI_USE_PTHREADS +#include +#endif + // "options.c" void _mi_fputs(mi_output_fun* out, void* arg, const char* prefix, const char* message); void _mi_fprintf(mi_output_fun* out, void* arg, const char* fmt, ...); @@ -326,7 +331,6 @@ mi_heap_t* _mi_heap_main_get(void); // statically allocated main backing hea #if defined(MI_TLS_SLOT) static inline void* mi_tls_slot(size_t slot) mi_attr_noexcept; // forward declaration #elif defined(MI_TLS_PTHREAD_SLOT_OFS) -#include static inline mi_heap_t** mi_tls_pthread_heap_slot(void) { pthread_t self = pthread_self(); #if defined(__DragonFly__) @@ -338,7 +342,6 @@ static inline mi_heap_t** mi_tls_pthread_heap_slot(void) { return (mi_heap_t**)((uint8_t*)self + MI_TLS_PTHREAD_SLOT_OFS); } #elif defined(MI_TLS_PTHREAD) -#include extern pthread_key_t _mi_heap_default_key; #endif diff --git a/src/init.c b/src/init.c index f2619000..e06fa6b9 100644 --- a/src/init.c +++ b/src/init.c @@ -275,12 +275,6 @@ static bool _mi_heap_done(mi_heap_t* heap) { static void _mi_thread_done(mi_heap_t* default_heap); -#ifdef __wasi__ -// no pthreads in the WebAssembly Standard Interface -#elif !defined(_WIN32) -#define MI_USE_PTHREADS -#endif - #if defined(_WIN32) && defined(MI_SHARED_LIB) // nothing to do as it is done in DllMain #elif defined(_WIN32) && !defined(MI_SHARED_LIB) @@ -300,7 +294,6 @@ static void _mi_thread_done(mi_heap_t* default_heap); #elif defined(MI_USE_PTHREADS) // use pthread local storage keys to detect thread ending // (and used with MI_TLS_PTHREADS for the default heap) - #include pthread_key_t _mi_heap_default_key = (pthread_key_t)(-1); static void mi_pthread_done(void* value) { if (value!=NULL) _mi_thread_done((mi_heap_t*)value); diff --git a/src/os.c b/src/os.c index dc2afc78..afa94a1c 100644 --- a/src/os.c +++ b/src/os.c @@ -231,7 +231,7 @@ void _mi_os_init(void) #elif defined(__wasi__) void _mi_os_init() { os_overcommit = false; - os_page_size = 0x10000; // WebAssembly has a fixed page size: 64KiB + os_page_size = 64*MI_KiB; // WebAssembly has a fixed page size: 64KiB os_alloc_granularity = 16; } @@ -283,7 +283,7 @@ static bool mi_os_mem_free(void* addr, size_t size, bool was_committed, mi_stats bool err = false; #if defined(_WIN32) err = (VirtualFree(addr, 0, MEM_RELEASE) == 0); -#elif defined(MI_USE_SBRK) +#elif defined(MI_USE_SBRK) || defined(__wasi__) err = 0; // sbrk heap cannot be shrunk #else err = (munmap(addr, size) == -1); @@ -376,38 +376,47 @@ static void* mi_win_virtual_alloc(void* addr, size_t size, size_t try_alignment, } #elif defined(MI_USE_SBRK) || defined(__wasi__) - #if defined(MI_USE_SBRK) -#define MI_SBRK_FAIL ((void*)(-1)) -static void* mi_memory_grow( size_t size ) { - void* p = sbrk(size); - if (p == MI_SBRK_FAIL) { - _mi_warning_message("unable to allocate sbrk() OS memory (%zu bytes)\n", size); - errno = ENOMEM; - return NULL; +// unfortunately sbrk is usually not safe to call from multiple threads +#if defined(MI_USE_PTHREADS) + static pthread_mutex_t mi_sbrk_mutex = PTHREAD_MUTEX_INITIALIZER; + static void* mi_sbrk(size_t size) { + pthread_mutex_lock(&mi_sbrk_mutex); + void* p = sbrk(size); + pthread_mutex_unlock(&mi_sbrk_mutex); + return p; + } + #else + static void* mi_sbrk(size_t size) { + return sbrk(size); + } + #endif + static void* mi_memory_grow( size_t size ) { + void* p = mi_sbrk(size); + if (p == (void*)(-1)) { + _mi_warning_message("unable to allocate sbrk() OS memory (%zu bytes)\n", size); + errno = ENOMEM; + return NULL; + } + if (size > 0) { memset(p,0,size); } + return p; } - return p; -} #elif defined(__wasi__) -static void* mi_memory_grow( size_t size ) { - if (size > 0) { - size_t base = __builtin_wasm_memory_grow( 0, _mi_divide_up(size, _mi_os_page_size()) ); + static void* mi_memory_grow( size_t size ) { + size_t base; + if (size > 0) { + base = __builtin_wasm_memory_grow( 0, _mi_divide_up(size, _mi_os_page_size()) ); + } + else { + base = __builtin_wasm_memory_size(0); + } if (base == SIZE_MAX) { _mi_warning_message("unable to allocate wasm_memory_grow OS memory (%zu bytes)\n", size); errno = ENOMEM; return NULL; } - return (void*)(base * _mi_os_page_size()); + return (void*)(base * _mi_os_page_size()); } - else { - size_t base = __builtin_wasm_memory_size(0); - if (base == SIZE_MAX) { - errno = ENOMEM; - return NULL; - } - return (void*)(base * _mi_os_page_size()); - } -} #endif static void* mi_heap_grow(size_t size, size_t try_alignment) { @@ -432,17 +441,19 @@ static void* mi_heap_grow(size_t size, size_t try_alignment) { errno = 0; void* pbase2 = mi_memory_grow( alloc_size ); if (pbase2 == NULL) { return NULL; } + base = (uintptr_t)pbase2; aligned_base = _mi_align_up(base, try_alignment); - mi_assert_internal(aligned_base + size <= (uintptr_t)pbase2 + alloc_size); } - } - else { - mi_assert_internal(aligned_base + size <= (uintptr_t)pbase1 + alloc_size); - } + else { + // it still fits + mi_assert_internal(aligned_base + size <= base + alloc_size); + } + } + mi_assert_internal(aligned_base + size <= base + alloc_size); return (void*)aligned_base; } -#else +#else #define MI_OS_USE_MMAP static void* mi_unix_mmapx(void* addr, size_t size, size_t try_alignment, int protect_flags, int flags, int fd) { MI_UNUSED(try_alignment); From b0a866685da1ee1ff3da400a880768d1c7774828 Mon Sep 17 00:00:00 2001 From: daan Date: Thu, 16 Dec 2021 14:54:10 -0800 Subject: [PATCH 14/60] improve sbrk/wasm_memory_grow implementation --- src/os.c | 157 +++++++++++++++++++++++++++++-------------------------- 1 file changed, 84 insertions(+), 73 deletions(-) diff --git a/src/os.c b/src/os.c index afa94a1c..45182f64 100644 --- a/src/os.c +++ b/src/os.c @@ -88,6 +88,7 @@ static void* mi_align_down_ptr(void* p, size_t alignment) { return (void*)_mi_align_down((uintptr_t)p, alignment); } + // page size (initialized properly in `os_init`) static size_t os_page_size = 4096; @@ -274,8 +275,8 @@ void _mi_os_init() { /* ----------------------------------------------------------- - Raw allocation on Windows (VirtualAlloc) and Unix's (mmap). ------------------------------------------------------------ */ + free memory +-------------------------------------------------------------- */ static bool mi_os_mem_free(void* addr, size_t size, bool was_committed, mi_stats_t* stats) { @@ -303,6 +304,10 @@ static bool mi_os_mem_free(void* addr, size_t size, bool was_committed, mi_stats static void* mi_os_get_aligned_hint(size_t try_alignment, size_t size); #endif +/* ----------------------------------------------------------- + Raw allocation on Windows (VirtualAlloc) +-------------------------------------------------------------- */ + #ifdef _WIN32 static void* mi_win_virtual_allocx(void* addr, size_t size, size_t try_alignment, DWORD flags) { #if (MI_INTPTR_SIZE >= 8) @@ -326,7 +331,7 @@ static void* mi_win_virtual_allocx(void* addr, size_t size, size_t try_alignment #endif #if defined(MEM_EXTENDED_PARAMETER_TYPE_BITS) // on modern Windows try use VirtualAlloc2 for aligned allocation - if (try_alignment > 0 && (try_alignment % _mi_os_page_size()) == 0 && pVirtualAlloc2 != NULL) { + if (try_alignment > 1 && (try_alignment % _mi_os_page_size()) == 0 && pVirtualAlloc2 != NULL) { MEM_ADDRESS_REQUIREMENTS reqs = { 0, 0, 0 }; reqs.Alignment = try_alignment; MEM_EXTENDED_PARAMETER param = { {0, 0}, {0} }; @@ -375,90 +380,93 @@ static void* mi_win_virtual_alloc(void* addr, size_t size, size_t try_alignment, return p; } +/* ----------------------------------------------------------- + Raw allocation using `sbrk` or `wasm_memory_grow` +-------------------------------------------------------------- */ + #elif defined(MI_USE_SBRK) || defined(__wasi__) #if defined(MI_USE_SBRK) -// unfortunately sbrk is usually not safe to call from multiple threads -#if defined(MI_USE_PTHREADS) - static pthread_mutex_t mi_sbrk_mutex = PTHREAD_MUTEX_INITIALIZER; - static void* mi_sbrk(size_t size) { - pthread_mutex_lock(&mi_sbrk_mutex); - void* p = sbrk(size); - pthread_mutex_unlock(&mi_sbrk_mutex); - return p; - } - #else - static void* mi_sbrk(size_t size) { - return sbrk(size); - } - #endif static void* mi_memory_grow( size_t size ) { - void* p = mi_sbrk(size); - if (p == (void*)(-1)) { - _mi_warning_message("unable to allocate sbrk() OS memory (%zu bytes)\n", size); - errno = ENOMEM; - return NULL; - } - if (size > 0) { memset(p,0,size); } + void* p = sbrk(size); + if (p == (void*)(-1)) return NULL; + #if !defined(__wasi__) // on wasi this is always zero initialized already (?) + memset(p,0,size); + #endif return p; } #elif defined(__wasi__) static void* mi_memory_grow( size_t size ) { - size_t base; - if (size > 0) { - base = __builtin_wasm_memory_grow( 0, _mi_divide_up(size, _mi_os_page_size()) ); - } - else { - base = __builtin_wasm_memory_size(0); - } - if (base == SIZE_MAX) { - _mi_warning_message("unable to allocate wasm_memory_grow OS memory (%zu bytes)\n", size); - errno = ENOMEM; - return NULL; - } + size_t base = (size > 0 ? __builtin_wasm_memory_grow(0,_mi_divide_up(size, _mi_os_page_size())) + : __builtin_wasm_memory_size(0)); + if (base == SIZE_MAX) return NULL; return (void*)(base * _mi_os_page_size()); } #endif +#if defined(MI_USE_PTHREADS) +static pthread_mutex_t mi_heap_grow_mutex = PTHREAD_MUTEX_INITIALIZER; +#endif + static void* mi_heap_grow(size_t size, size_t try_alignment) { - if (try_alignment == 0) { try_alignment = _mi_os_page_size(); }; - void* pbase0 = mi_memory_grow(0); - if (pbase0 == NULL) { return NULL; } - uintptr_t base = (uintptr_t)pbase0; - uintptr_t aligned_base = _mi_align_up(base, try_alignment); - size_t alloc_size = _mi_align_up( aligned_base - base + size, _mi_os_page_size()); - mi_assert(alloc_size >= size && (alloc_size % _mi_os_page_size()) == 0); - if (alloc_size < size) return NULL; - void* pbase1 = mi_memory_grow(alloc_size); - if (pbase1 == NULL) { return NULL; } - if (pbase0 != pbase1) { - // another thread allocated in-between; now we may not be able to align correctly - base = (uintptr_t)pbase1; - aligned_base = _mi_align_up(base, try_alignment); - if (aligned_base + size > base + alloc_size) { - // we do not have enough space after alignment; since we cannot shrink safely, - // we waste the space :-( and allocate fresh with guaranteed enough overallocation - alloc_size = _mi_align_up( size + try_alignment, _mi_os_page_size() ); - errno = 0; - void* pbase2 = mi_memory_grow( alloc_size ); - if (pbase2 == NULL) { return NULL; } - base = (uintptr_t)pbase2; - aligned_base = _mi_align_up(base, try_alignment); - } - else { - // it still fits - mi_assert_internal(aligned_base + size <= base + alloc_size); + void* p = NULL; + if (try_alignment <= 1) { + // `sbrk` is not thread safe in general so try to protect it (we could skip this on WASM but leave it in for now) + #if defined(MI_USE_PTHREADS) + pthread_mutex_lock(&mi_heap_grow_mutex); + #endif + p = mi_memory_grow(size); + #if defined(MI_USE_PTHREADS) + pthread_mutex_unlock(&mi_heap_grow_mutex); + #endif + } + else { + void* base = NULL; + size_t alloc_size = 0; + // to allocate aligned use a lock to try to avoid thread interaction + // between getting the current size and actual allocation + // (also, `sbrk` is not thread safe in general) + #if defined(MI_USE_PTHREADS) + pthread_mutex_lock(&mi_heap_grow_mutex); + #endif + { + void* current = mi_memory_grow(0); // get current size + if (current != NULL) { + void* aligned_current = mi_align_up_ptr(current, try_alignment); // and align from there to minimize wasted space + alloc_size = _mi_align_up( ((uint8_t*)aligned_current - (uint8_t*)current) + size, _mi_os_page_size()); + base = mi_memory_grow(alloc_size); + } } - } - mi_assert_internal(aligned_base + size <= base + alloc_size); - return (void*)aligned_base; + #if defined(MI_USE_PTHREADS) + pthread_mutex_unlock(&mi_heap_grow_mutex); + #endif + if (base != NULL) { + p = mi_align_up_ptr(base, try_alignment); + if ((uint8_t*)p + size > (uint8_t*)base + alloc_size) { + // another thread used wasm_memory_grow/sbrk in-between and we do not have enough + // space after alignment. Give up (and waste the space as we cannot shrink :-( ) + // (in `mi_os_mem_alloc_aligned` this will fall back to overallocation to align) + p = NULL; + } + } + } + if (p == NULL) { + _mi_warning_message("unable to allocate sbrk/wasm_memory_grow OS memory (%zu bytes, %zu alignment)\n", size, try_alignment); + errno = ENOMEM; + return NULL; + } + mi_assert_internal( try_alignment == 0 || (uintptr_t)p % try_alignment == 0 ); + return p; } +/* ----------------------------------------------------------- + Raw allocation on Unix's (mmap) +-------------------------------------------------------------- */ #else #define MI_OS_USE_MMAP static void* mi_unix_mmapx(void* addr, size_t size, size_t try_alignment, int protect_flags, int flags, int fd) { MI_UNUSED(try_alignment); #if defined(MAP_ALIGNED) // BSD - if (addr == NULL && try_alignment > 0 && (try_alignment % _mi_os_page_size()) == 0) { + if (addr == NULL && try_alignment > 1 && (try_alignment % _mi_os_page_size()) == 0) { size_t n = mi_bsr(try_alignment); if (((size_t)1 << n) == try_alignment && n >= 12 && n <= 30) { // alignment is a power of 2 and 4096 <= alignment <= 1GiB flags |= MAP_ALIGNED(n); @@ -468,7 +476,7 @@ static void* mi_unix_mmapx(void* addr, size_t size, size_t try_alignment, int pr } } #elif defined(MAP_ALIGN) // Solaris - if (addr == NULL && try_alignment > 0 && (try_alignment % _mi_os_page_size()) == 0) { + if (addr == NULL && try_alignment > 1 && (try_alignment % _mi_os_page_size()) == 0) { void* p = mmap(try_alignment, size, protect_flags, flags | MAP_ALIGN, fd, 0); if (p!=MAP_FAILED) return p; // fall back to regular mmap @@ -622,7 +630,7 @@ static mi_decl_cache_align _Atomic(uintptr_t) aligned_base; static void* mi_os_get_aligned_hint(size_t try_alignment, size_t size) { - if (try_alignment == 0 || try_alignment > MI_SEGMENT_SIZE) return NULL; + if (try_alignment <= 1 || try_alignment > MI_SEGMENT_SIZE) return NULL; size = _mi_align_up(size, MI_SEGMENT_SIZE); if (size > 1*MI_GiB) return NULL; // guarantee the chance of fixed valid address is at most 1/(MI_HINT_AREA / 1<<30) = 1/4096. #if (MI_SECURE>0) @@ -652,13 +660,16 @@ static void* mi_os_get_aligned_hint(size_t try_alignment, size_t size) { } #endif +/* ----------------------------------------------------------- + Primitive allocation from the OS. +-------------------------------------------------------------- */ -// Primitive allocation from the OS. // Note: the `try_alignment` is just a hint and the returned pointer is not guaranteed to be aligned. static void* mi_os_mem_alloc(size_t size, size_t try_alignment, bool commit, bool allow_large, bool* is_large, mi_stats_t* stats) { mi_assert_internal(size > 0 && (size % _mi_os_page_size()) == 0); if (size == 0) return NULL; if (!commit) allow_large = false; + if (try_alignment == 0) try_alignment = 1; // avoid 0 to ensure there will be no divide by zero when aligning void* p = NULL; /* @@ -746,9 +757,9 @@ static void* mi_os_mem_alloc_aligned(size_t size, size_t alignment, bool commit, } #else // overallocate... - p = mi_os_mem_alloc(over_size, alignment, commit, false, is_large, stats); + p = mi_os_mem_alloc(over_size, 1, commit, false, is_large, stats); if (p == NULL) return NULL; - // and selectively unmap parts around the over-allocated area. + // and selectively unmap parts around the over-allocated area. (noop on sbrk) void* aligned_p = mi_align_up_ptr(p, alignment); size_t pre_size = (uint8_t*)aligned_p - (uint8_t*)p; size_t mid_size = _mi_align_up(size, _mi_os_page_size()); @@ -756,7 +767,7 @@ static void* mi_os_mem_alloc_aligned(size_t size, size_t alignment, bool commit, mi_assert_internal(pre_size < over_size && post_size < over_size && mid_size >= size); if (pre_size > 0) mi_os_mem_free(p, pre_size, commit, stats); if (post_size > 0) mi_os_mem_free((uint8_t*)aligned_p + mid_size, post_size, commit, stats); - // we can return the aligned pointer on `mmap` systems + // we can return the aligned pointer on `mmap` (and sbrk) systems p = aligned_p; #endif } From 27e24e619b7ed3fbc20ab74060a10fc1e2f30bf7 Mon Sep 17 00:00:00 2001 From: daan Date: Thu, 16 Dec 2021 15:11:47 -0800 Subject: [PATCH 15/60] use wasm_memory_grow instead of sbrk on wasm --- src/os.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/src/os.c b/src/os.c index 45182f64..71b371d2 100644 --- a/src/os.c +++ b/src/os.c @@ -26,10 +26,6 @@ terms of the MIT license. A copy of the license can be found in the file #pragma warning(disable:4996) // strerror #endif -#if defined(__wasi__) -#define MI_USE_SBRK -#endif - #if defined(_WIN32) #include #elif defined(__wasi__) From 5bbb2ff416ec4d374d49f742dff610028ecd72e4 Mon Sep 17 00:00:00 2001 From: daan Date: Thu, 16 Dec 2021 15:34:52 -0800 Subject: [PATCH 16/60] reenable the use of sbrk on wasm as it seems more stable than direct memory_grow --- src/os.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/os.c b/src/os.c index 71b371d2..a799cdf1 100644 --- a/src/os.c +++ b/src/os.c @@ -8,6 +8,8 @@ terms of the MIT license. A copy of the license can be found in the file #define _DEFAULT_SOURCE // ensure mmap flags are defined #endif +#define MI_USE_SBRK + #if defined(__sun) // illumos provides new mman.h api when any of these are defined // otherwise the old api based on caddr_t which predates the void pointers one. @@ -26,6 +28,10 @@ terms of the MIT license. A copy of the license can be found in the file #pragma warning(disable:4996) // strerror #endif +#if defined(__wasi__) +#define MI_USE_SBRK +#endif + #if defined(_WIN32) #include #elif defined(__wasi__) From 60790e9013eb8fe594cf7b3916baeae2cf03b03c Mon Sep 17 00:00:00 2001 From: daan Date: Thu, 16 Dec 2021 15:35:53 -0800 Subject: [PATCH 17/60] remove accidental define --- src/os.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/src/os.c b/src/os.c index a799cdf1..45182f64 100644 --- a/src/os.c +++ b/src/os.c @@ -8,8 +8,6 @@ terms of the MIT license. A copy of the license can be found in the file #define _DEFAULT_SOURCE // ensure mmap flags are defined #endif -#define MI_USE_SBRK - #if defined(__sun) // illumos provides new mman.h api when any of these are defined // otherwise the old api based on caddr_t which predates the void pointers one. From 684c2c82a795f527cff015ab1c6a32e8680cb165 Mon Sep 17 00:00:00 2001 From: daan Date: Fri, 17 Dec 2021 11:40:46 -0800 Subject: [PATCH 18/60] restrict max aligment boundary to prevent bug with segment determination (found by Matthew Parkinson). --- include/mimalloc-types.h | 5 ++++- include/mimalloc.h | 1 + src/alloc-aligned.c | 1 + 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/include/mimalloc-types.h b/include/mimalloc-types.h index c9f399df..d45a1eea 100644 --- a/include/mimalloc-types.h +++ b/include/mimalloc-types.h @@ -158,7 +158,10 @@ typedef int32_t mi_ssize_t; #define MI_BIN_HUGE (73U) #if (MI_LARGE_OBJ_WSIZE_MAX >= 655360) -#error "define more bins" +#error "mimalloc internal: define more bins" +#endif +#if (MI_ALIGNED_MAX > MI_SEGMENT_SIZE/2) +#error "mimalloc internal: the max aligned boundary is too large for the segment size" #endif // Used as a special value to encode block sizes in 32 bits. diff --git a/include/mimalloc.h b/include/mimalloc.h index 9c3e2dea..b65027d3 100644 --- a/include/mimalloc.h +++ b/include/mimalloc.h @@ -166,6 +166,7 @@ mi_decl_export void mi_process_info(size_t* elapsed_msecs, size_t* user_msecs, s // Note that `alignment` always follows `size` for consistency with unaligned // allocation, but unfortunately this differs from `posix_memalign` and `aligned_alloc`. // ------------------------------------------------------------------------------------- +#define MI_ALIGNED_MAX (1024*1024UL) // maximum supported alignment is 1MiB mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_malloc_aligned(size_t size, size_t alignment) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1) mi_attr_alloc_align(2); mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_malloc_aligned_at(size_t size, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1); diff --git a/src/alloc-aligned.c b/src/alloc-aligned.c index 724c0a1b..15062389 100644 --- a/src/alloc-aligned.c +++ b/src/alloc-aligned.c @@ -20,6 +20,7 @@ static void* mi_heap_malloc_zero_aligned_at(mi_heap_t* const heap, const size_t mi_assert(alignment > 0); if (mi_unlikely(size > PTRDIFF_MAX)) return NULL; // we don't allocate more than PTRDIFF_MAX (see ) if (mi_unlikely(alignment==0 || !_mi_is_power_of_two(alignment))) return NULL; // require power-of-two (see ) + if (mi_unlikely(alignment>MI_ALIGNED_MAX)) return NULL; // we cannot align at a boundary larger than this (or otherwise we cannot find segment headers) const uintptr_t align_mask = alignment-1; // for any x, `(x & align_mask) == (x % alignment)` // try if there is a small block available with just the right alignment From 89f583a69b86a06966fb07b4794b4046faa01fee Mon Sep 17 00:00:00 2001 From: daan Date: Fri, 17 Dec 2021 13:18:05 -0800 Subject: [PATCH 19/60] improve aligned allocation performance --- include/mimalloc-internal.h | 5 -- src/alloc-aligned.c | 111 +++++++++++++++++++++++++++--------- src/alloc-posix.c | 19 +++--- test/main-override-static.c | 2 +- test/test-api.c | 14 ++++- 5 files changed, 108 insertions(+), 43 deletions(-) diff --git a/include/mimalloc-internal.h b/include/mimalloc-internal.h index 68239573..1df8b5de 100644 --- a/include/mimalloc-internal.h +++ b/include/mimalloc-internal.h @@ -247,11 +247,6 @@ static inline size_t _mi_wsize_from_size(size_t size) { return (size + sizeof(uintptr_t) - 1) / sizeof(uintptr_t); } -// Does malloc satisfy the alignment constraints already? -static inline bool mi_malloc_satisfies_alignment(size_t alignment, size_t size) { - return (alignment == sizeof(void*) || (alignment == MI_MAX_ALIGN_SIZE && size > (MI_MAX_ALIGN_SIZE/2))); -} - // Overflow detecting multiply #if __has_builtin(__builtin_umul_overflow) || (defined(__GNUC__) && (__GNUC__ >= 5)) #include // UINT_MAX, ULONG_MAX diff --git a/src/alloc-aligned.c b/src/alloc-aligned.c index 15062389..12706f7f 100644 --- a/src/alloc-aligned.c +++ b/src/alloc-aligned.c @@ -14,32 +14,14 @@ terms of the MIT license. A copy of the license can be found in the file // Aligned Allocation // ------------------------------------------------------ -static void* mi_heap_malloc_zero_aligned_at(mi_heap_t* const heap, const size_t size, const size_t alignment, const size_t offset, const bool zero) mi_attr_noexcept { - // note: we don't require `size > offset`, we just guarantee that - // the address at offset is aligned regardless of the allocated size. - mi_assert(alignment > 0); - if (mi_unlikely(size > PTRDIFF_MAX)) return NULL; // we don't allocate more than PTRDIFF_MAX (see ) - if (mi_unlikely(alignment==0 || !_mi_is_power_of_two(alignment))) return NULL; // require power-of-two (see ) - if (mi_unlikely(alignment>MI_ALIGNED_MAX)) return NULL; // we cannot align at a boundary larger than this (or otherwise we cannot find segment headers) +// Fallback primitive aligned allocation -- split out for better codegen +static mi_decl_noinline void* mi_heap_malloc_zero_aligned_at_fallback(mi_heap_t* const heap, const size_t size, const size_t alignment, const size_t offset, const bool zero) mi_attr_noexcept +{ + mi_assert_internal(size <= PTRDIFF_MAX); + mi_assert_internal(alignment!=0 && _mi_is_power_of_two(alignment) && alignment <= MI_ALIGNED_MAX); + const uintptr_t align_mask = alignment-1; // for any x, `(x & align_mask) == (x % alignment)` - - // try if there is a small block available with just the right alignment const size_t padsize = size + MI_PADDING_SIZE; - if (mi_likely(padsize <= MI_SMALL_SIZE_MAX)) { - mi_page_t* page = _mi_heap_get_free_small_page(heap,padsize); - const bool is_aligned = (((uintptr_t)page->free+offset) & align_mask)==0; - if (mi_likely(page->free != NULL && is_aligned)) - { - #if MI_STAT>1 - mi_heap_stat_increase( heap, malloc, size); - #endif - void* p = _mi_page_malloc(heap,page,padsize); // TODO: inline _mi_page_malloc - mi_assert_internal(p != NULL); - mi_assert_internal(((uintptr_t)p + offset) % alignment == 0); - if (zero) _mi_block_zero_init(page,p,size); - return p; - } - } // use regular allocation if it is guaranteed to fit the alignment constraints if (offset==0 && alignment<=padsize && padsize<=MI_MEDIUM_OBJ_SIZE_MAX && (padsize&align_mask)==0) { @@ -47,7 +29,7 @@ static void* mi_heap_malloc_zero_aligned_at(mi_heap_t* const heap, const size_t mi_assert_internal(p == NULL || ((uintptr_t)p % alignment) == 0); return p; } - + // otherwise over-allocate void* p = _mi_heap_malloc_zero(heap, size + alignment - 1, zero); if (p == NULL) return NULL; @@ -56,21 +38,90 @@ static void* mi_heap_malloc_zero_aligned_at(mi_heap_t* const heap, const size_t uintptr_t adjust = alignment - (((uintptr_t)p + offset) & align_mask); mi_assert_internal(adjust <= alignment); void* aligned_p = (adjust == alignment ? p : (void*)((uintptr_t)p + adjust)); - if (aligned_p != p) mi_page_set_has_aligned(_mi_ptr_page(p), true); + if (aligned_p != p) mi_page_set_has_aligned(_mi_ptr_page(p), true); mi_assert_internal(((uintptr_t)aligned_p + offset) % alignment == 0); - mi_assert_internal( p == _mi_page_ptr_unalign(_mi_ptr_segment(aligned_p),_mi_ptr_page(aligned_p),aligned_p) ); + mi_assert_internal(p == _mi_page_ptr_unalign(_mi_ptr_segment(aligned_p), _mi_ptr_page(aligned_p), aligned_p)); return aligned_p; } +// Primitive aligned allocation +static void* mi_heap_malloc_zero_aligned_at(mi_heap_t* const heap, const size_t size, const size_t alignment, const size_t offset, const bool zero) mi_attr_noexcept +{ + // note: we don't require `size > offset`, we just guarantee that the address at offset is aligned regardless of the allocated size. + mi_assert(alignment > 0); + if (mi_unlikely(alignment==0 || !_mi_is_power_of_two(alignment))) { // require power-of-two (see ) + #if MI_DEBUG > 0 + _mi_error_message(EOVERFLOW, "aligned allocation requires the alignment to be a power-of-two (size %zu, alignment %zu)", size, alignment); + #endif + return NULL; + } + if (mi_unlikely(alignment > MI_ALIGNED_MAX)) { // we cannot align at a boundary larger than this (or otherwise we cannot find segment headers) + #if MI_DEBUG > 0 + _mi_error_message(EOVERFLOW, "aligned allocation has a maximum alignment of %zu (size %zu, alignment %zu)", MI_ALIGNED_MAX, size, alignment); + #endif + return NULL; + } + if (mi_unlikely(size > PTRDIFF_MAX)) { // we don't allocate more than PTRDIFF_MAX (see ) + #if MI_DEBUG > 0 + _mi_error_message(EOVERFLOW, "aligned allocation request is too large (size %zu, alignment %zu)", size, alignment); + #endif + return NULL; + } + const uintptr_t align_mask = alignment-1; // for any x, `(x & align_mask) == (x % alignment)` + const size_t padsize = size + MI_PADDING_SIZE; // note: cannot overflow due to earlier size > PTRDIFF_MAX check + + // try first if there happens to be a small block available with just the right alignment + if (mi_likely(padsize <= MI_SMALL_SIZE_MAX)) { + mi_page_t* page = _mi_heap_get_free_small_page(heap, padsize); + const bool is_aligned = (((uintptr_t)page->free+offset) & align_mask)==0; + if (mi_likely(page->free != NULL && is_aligned)) + { + #if MI_STAT>1 + mi_heap_stat_increase(heap, malloc, size); + #endif + void* p = _mi_page_malloc(heap, page, padsize); // TODO: inline _mi_page_malloc + mi_assert_internal(p != NULL); + mi_assert_internal(((uintptr_t)p + offset) % alignment == 0); + if (zero) { _mi_block_zero_init(page, p, size); } + return p; + } + } + // fallback + return mi_heap_malloc_zero_aligned_at_fallback(heap, size, alignment, offset, zero); +} + + +// ------------------------------------------------------ +// Optimized mi_heap_malloc_aligned / mi_malloc_aligned +// ------------------------------------------------------ mi_decl_restrict void* mi_heap_malloc_aligned_at(mi_heap_t* heap, size_t size, size_t alignment, size_t offset) mi_attr_noexcept { return mi_heap_malloc_zero_aligned_at(heap, size, alignment, offset, false); } mi_decl_restrict void* mi_heap_malloc_aligned(mi_heap_t* heap, size_t size, size_t alignment) mi_attr_noexcept { - return mi_heap_malloc_aligned_at(heap, size, alignment, 0); + #if !MI_PADDING + // without padding, any small sized allocation is naturally aligned (see also `_mi_segment_page_start`) + if (!_mi_is_power_of_two(alignment)) return NULL; + if (mi_likely(_mi_is_power_of_two(size) && size >= alignment && size <= MI_SMALL_SIZE_MAX)) + #else + // with padding, we can only guarantee this for fixed alignments + if (mi_likely((alignment == sizeof(void*) || (alignment == MI_MAX_ALIGN_SIZE && size > (MI_MAX_ALIGN_SIZE/2))) + && size <= MI_SMALL_SIZE_MAX)) + #endif + { + // fast path for common alignment and size + return mi_heap_malloc_small(heap, size); + } + else { + return mi_heap_malloc_aligned_at(heap, size, alignment, 0); + } } +// ------------------------------------------------------ +// Aligned Allocation +// ------------------------------------------------------ + mi_decl_restrict void* mi_heap_zalloc_aligned_at(mi_heap_t* heap, size_t size, size_t alignment, size_t offset) mi_attr_noexcept { return mi_heap_malloc_zero_aligned_at(heap, size, alignment, offset, true); } @@ -114,6 +165,10 @@ mi_decl_restrict void* mi_calloc_aligned(size_t count, size_t size, size_t align } +// ------------------------------------------------------ +// Aligned re-allocation +// ------------------------------------------------------ + static void* mi_heap_realloc_zero_aligned_at(mi_heap_t* heap, void* p, size_t newsize, size_t alignment, size_t offset, bool zero) mi_attr_noexcept { mi_assert(alignment > 0); if (alignment <= sizeof(uintptr_t)) return _mi_heap_realloc_zero(heap,p,newsize,zero); diff --git a/src/alloc-posix.c b/src/alloc-posix.c index 2eaede07..efe62817 100644 --- a/src/alloc-posix.c +++ b/src/alloc-posix.c @@ -56,9 +56,9 @@ int mi_posix_memalign(void** p, size_t alignment, size_t size) mi_attr_noexcept // Note: The spec dictates we should not modify `*p` on an error. (issue#27) // if (p == NULL) return EINVAL; - if (alignment % sizeof(void*) != 0) return EINVAL; // natural alignment - if (!_mi_is_power_of_two(alignment)) return EINVAL; // not a power of 2 - void* q = (mi_malloc_satisfies_alignment(alignment, size) ? mi_malloc(size) : mi_malloc_aligned(size, alignment)); + if (alignment % sizeof(void*) != 0) return EINVAL; // natural alignment + if (alignment==0 || !_mi_is_power_of_two(alignment)) return EINVAL; // not a power of 2 + void* q = mi_malloc_aligned(size, alignment); if (q==NULL && size != 0) return ENOMEM; mi_assert_internal(((uintptr_t)q % alignment) == 0); *p = q; @@ -66,7 +66,7 @@ int mi_posix_memalign(void** p, size_t alignment, size_t size) mi_attr_noexcept } mi_decl_restrict void* mi_memalign(size_t alignment, size_t size) mi_attr_noexcept { - void* p = (mi_malloc_satisfies_alignment(alignment,size) ? mi_malloc(size) : mi_malloc_aligned(size, alignment)); + void* p = mi_malloc_aligned(size, alignment); mi_assert_internal(((uintptr_t)p % alignment) == 0); return p; } @@ -83,9 +83,14 @@ mi_decl_restrict void* mi_pvalloc(size_t size) mi_attr_noexcept { } mi_decl_restrict void* mi_aligned_alloc(size_t alignment, size_t size) mi_attr_noexcept { - if (alignment==0 || !_mi_is_power_of_two(alignment)) return NULL; - if ((size&(alignment-1)) != 0) return NULL; // C11 requires integral multiple, see - void* p = (mi_malloc_satisfies_alignment(alignment, size) ? mi_malloc(size) : mi_malloc_aligned(size, alignment)); + if (mi_unlikely((size&(alignment-1)) != 0)) { // C11 requires alignment>0 && integral multiple, see + #if MI_DEBUG > 0 + _mi_error_message(EOVERFLOW, "(mi_)aligned_alloc requires the size to be an integral multiple of the alignment (size %zu, alignment %zu)", size, alignment); + #endif + return NULL; + } + // C11 also requires alignment to be a power-of-two which is checked in mi_malloc_aligned + void* p = mi_malloc_aligned(size, alignment); mi_assert_internal(((uintptr_t)p % alignment) == 0); return p; } diff --git a/test/main-override-static.c b/test/main-override-static.c index 221db7e8..071e4248 100644 --- a/test/main-override-static.c +++ b/test/main-override-static.c @@ -42,7 +42,7 @@ int main() { free(p1); free(p2); free(s); - + /* now test if override worked by allocating/freeing across the api's*/ //p1 = mi_malloc(32); //free(p1); diff --git a/test/test-api.c b/test/test-api.c index 8ddbf7cf..1f810d53 100644 --- a/test/test-api.c +++ b/test/test-api.c @@ -158,6 +158,16 @@ int main(void) { CHECK_BODY("malloc-aligned5", { void* p = mi_malloc_aligned(4097,4096); size_t usable = mi_usable_size(p); result = usable >= 4097 && usable < 10000; mi_free(p); }); + CHECK_BODY("malloc-aligned6", { + void* p; + bool ok = true; + for (int i = 1; i < 8 && ok; i++) { + size_t align = 1UL << i; + p = mi_malloc_aligned(2*align, align); + ok = (p != NULL && (uintptr_t)(p) % align == 0); mi_free(p); + } + result = ok; + }); CHECK_BODY("malloc-aligned-at1", { void* p = mi_malloc_aligned_at(48,32,0); result = (p != NULL && ((uintptr_t)(p) + 0) % 32 == 0); mi_free(p); }); @@ -172,8 +182,8 @@ int main(void) { ok = (p != NULL && (uintptr_t)(p) % 16 == 0); mi_free(p); } result = ok; - }); - + }); + // --------------------------------------------------- // Heaps // --------------------------------------------------- From faf2a7020c4d3234434b165f5c27f89d7777016b Mon Sep 17 00:00:00 2001 From: daan Date: Fri, 17 Dec 2021 13:25:38 -0800 Subject: [PATCH 20/60] add extra alignment tests --- src/alloc-aligned.c | 6 +++--- src/alloc-posix.c | 2 +- test/test-api.c | 8 +++++++- 3 files changed, 11 insertions(+), 5 deletions(-) diff --git a/src/alloc-aligned.c b/src/alloc-aligned.c index 12706f7f..3a608b83 100644 --- a/src/alloc-aligned.c +++ b/src/alloc-aligned.c @@ -51,19 +51,19 @@ static void* mi_heap_malloc_zero_aligned_at(mi_heap_t* const heap, const size_t mi_assert(alignment > 0); if (mi_unlikely(alignment==0 || !_mi_is_power_of_two(alignment))) { // require power-of-two (see ) #if MI_DEBUG > 0 - _mi_error_message(EOVERFLOW, "aligned allocation requires the alignment to be a power-of-two (size %zu, alignment %zu)", size, alignment); + _mi_error_message(EOVERFLOW, "aligned allocation requires the alignment to be a power-of-two (size %zu, alignment %zu)\n", size, alignment); #endif return NULL; } if (mi_unlikely(alignment > MI_ALIGNED_MAX)) { // we cannot align at a boundary larger than this (or otherwise we cannot find segment headers) #if MI_DEBUG > 0 - _mi_error_message(EOVERFLOW, "aligned allocation has a maximum alignment of %zu (size %zu, alignment %zu)", MI_ALIGNED_MAX, size, alignment); + _mi_error_message(EOVERFLOW, "aligned allocation has a maximum alignment of %zu (size %zu, alignment %zu)\n", MI_ALIGNED_MAX, size, alignment); #endif return NULL; } if (mi_unlikely(size > PTRDIFF_MAX)) { // we don't allocate more than PTRDIFF_MAX (see ) #if MI_DEBUG > 0 - _mi_error_message(EOVERFLOW, "aligned allocation request is too large (size %zu, alignment %zu)", size, alignment); + _mi_error_message(EOVERFLOW, "aligned allocation request is too large (size %zu, alignment %zu)\n", size, alignment); #endif return NULL; } diff --git a/src/alloc-posix.c b/src/alloc-posix.c index efe62817..03171081 100644 --- a/src/alloc-posix.c +++ b/src/alloc-posix.c @@ -85,7 +85,7 @@ mi_decl_restrict void* mi_pvalloc(size_t size) mi_attr_noexcept { mi_decl_restrict void* mi_aligned_alloc(size_t alignment, size_t size) mi_attr_noexcept { if (mi_unlikely((size&(alignment-1)) != 0)) { // C11 requires alignment>0 && integral multiple, see #if MI_DEBUG > 0 - _mi_error_message(EOVERFLOW, "(mi_)aligned_alloc requires the size to be an integral multiple of the alignment (size %zu, alignment %zu)", size, alignment); + _mi_error_message(EOVERFLOW, "(mi_)aligned_alloc requires the size to be an integral multiple of the alignment (size %zu, alignment %zu)\n", size, alignment); #endif return NULL; } diff --git a/test/test-api.c b/test/test-api.c index 1f810d53..56835d00 100644 --- a/test/test-api.c +++ b/test/test-api.c @@ -162,12 +162,18 @@ int main(void) { void* p; bool ok = true; for (int i = 1; i < 8 && ok; i++) { - size_t align = 1UL << i; + size_t align = (size_t)1 << i; p = mi_malloc_aligned(2*align, align); ok = (p != NULL && (uintptr_t)(p) % align == 0); mi_free(p); } result = ok; }); + CHECK_BODY("malloc-aligned7", { + void* p = mi_malloc_aligned(1024,MI_ALIGNED_MAX); mi_free(p); + }); + CHECK_BODY("malloc-aligned8", { + void* p = mi_malloc_aligned(1024,2*MI_ALIGNED_MAX); mi_free(p); + }); CHECK_BODY("malloc-aligned-at1", { void* p = mi_malloc_aligned_at(48,32,0); result = (p != NULL && ((uintptr_t)(p) + 0) % 32 == 0); mi_free(p); }); From f5ea6c70bdaa55e3709858490164752dc8c30945 Mon Sep 17 00:00:00 2001 From: daan Date: Fri, 17 Dec 2021 13:40:39 -0800 Subject: [PATCH 21/60] NetBSD mi_reallocarr should update errno (based on PR #499 by @devexen) --- src/alloc-posix.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/alloc-posix.c b/src/alloc-posix.c index 03171081..ee5babe1 100644 --- a/src/alloc-posix.c +++ b/src/alloc-posix.c @@ -103,7 +103,10 @@ void* mi_reallocarray( void* p, size_t count, size_t size ) mi_attr_noexcept { int mi_reallocarr( void* p, size_t count, size_t size ) mi_attr_noexcept { // NetBSD mi_assert(p != NULL); - if (p == NULL) return EINVAL; // should we set errno as well? + if (p == NULL) { + errno = EINVAL; + return EINVAL; + } void** op = (void**)p; void* newp = mi_reallocarray(*op, count, size); if (mi_unlikely(newp == NULL)) return errno; From 30a99e2c514b7f69b3224181b4d3877deffd824c Mon Sep 17 00:00:00 2001 From: daan Date: Fri, 17 Dec 2021 13:48:39 -0800 Subject: [PATCH 22/60] default to portable C for the thread id on arm 32-bit, issue #495 --- include/mimalloc-internal.h | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/include/mimalloc-internal.h b/include/mimalloc-internal.h index 1df8b5de..06c3e95f 100644 --- a/include/mimalloc-internal.h +++ b/include/mimalloc-internal.h @@ -708,21 +708,21 @@ static inline mi_threadid_t _mi_thread_id(void) mi_attr_noexcept { } #elif defined(__GNUC__) && \ - (defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__)) + (defined(__x86_64__) || defined(__i386__) || defined(__aarch64__)) -// TLS register on x86 is in the FS or GS register, see: https://akkadia.org/drepper/tls.pdf +// see also https://akkadia.org/drepper/tls.pdf for more info on the TLS register. static inline void* mi_tls_slot(size_t slot) mi_attr_noexcept { void* res; const size_t ofs = (slot*sizeof(void*)); #if defined(__i386__) - __asm__("movl %%gs:%1, %0" : "=r" (res) : "m" (*((void**)ofs)) : ); // 32-bit always uses GS + __asm__("movl %%gs:%1, %0" : "=r" (res) : "m" (*((void**)ofs)) : ); // x86 32-bit always uses GS #elif defined(__APPLE__) && defined(__x86_64__) __asm__("movq %%gs:%1, %0" : "=r" (res) : "m" (*((void**)ofs)) : ); // x86_64 macOSX uses GS #elif defined(__x86_64__) && (MI_INTPTR_SIZE==4) __asm__("movl %%fs:%1, %0" : "=r" (res) : "m" (*((void**)ofs)) : ); // x32 ABI #elif defined(__x86_64__) __asm__("movq %%fs:%1, %0" : "=r" (res) : "m" (*((void**)ofs)) : ); // x86_64 Linux, BSD uses FS -#elif defined(__arm__) +#elif defined(__arm__) // arm32: defined but currently not used (see issue #495) void** tcb; MI_UNUSED(ofs); __asm__ volatile ("mrc p15, 0, %0, c13, c0, 3\nbic %0, %0, #3" : "=r" (tcb)); res = tcb[slot]; @@ -739,7 +739,7 @@ static inline void* mi_tls_slot(size_t slot) mi_attr_noexcept { return res; } -// setting is only used on macOSX for now +// setting a tls slot is only used on macOSX for now static inline void mi_tls_slot_set(size_t slot, void* value) mi_attr_noexcept { const size_t ofs = (slot*sizeof(void*)); #if defined(__i386__) @@ -767,8 +767,8 @@ static inline void mi_tls_slot_set(size_t slot, void* value) mi_attr_noexcept { } static inline mi_threadid_t _mi_thread_id(void) mi_attr_noexcept { -#if defined(__arm__) || (defined(__ANDROID__) && defined(__aarch64__)) - // issue #384, #495: on arm32 and arm32/arm64 Android, slot 1 is the thread ID (pointer to pthread internal struct) +#if defined(__ANDROID__) && (defined(__arm__) || defined(__aarch64__)) + // issue #384, #495: on arm Android, slot 1 is the thread ID (pointer to pthread internal struct) return (uintptr_t)mi_tls_slot(1); #else // in all our other targets, slot 0 is the pointer to the thread control block @@ -776,7 +776,7 @@ static inline mi_threadid_t _mi_thread_id(void) mi_attr_noexcept { #endif } #else -// otherwise use standard C +// otherwise use portable C static inline mi_threadid_t _mi_thread_id(void) mi_attr_noexcept { return (uintptr_t)&_mi_heap_default; } From 89090510bd965ca48a83857eaa6b6e78a951bf7e Mon Sep 17 00:00:00 2001 From: Daan Leijen Date: Sat, 18 Dec 2021 11:11:44 -0800 Subject: [PATCH 23/60] update alignment tests --- include/mimalloc-types.h | 2 +- include/mimalloc.h | 2 +- src/alloc-aligned.c | 6 +++--- test/test-api.c | 20 +++++++++++++------- 4 files changed, 18 insertions(+), 12 deletions(-) diff --git a/include/mimalloc-types.h b/include/mimalloc-types.h index d45a1eea..b349dfc3 100644 --- a/include/mimalloc-types.h +++ b/include/mimalloc-types.h @@ -160,7 +160,7 @@ typedef int32_t mi_ssize_t; #if (MI_LARGE_OBJ_WSIZE_MAX >= 655360) #error "mimalloc internal: define more bins" #endif -#if (MI_ALIGNED_MAX > MI_SEGMENT_SIZE/2) +#if (MI_ALIGNMENT_MAX > MI_SEGMENT_SIZE/2) #error "mimalloc internal: the max aligned boundary is too large for the segment size" #endif diff --git a/include/mimalloc.h b/include/mimalloc.h index b65027d3..a0b71389 100644 --- a/include/mimalloc.h +++ b/include/mimalloc.h @@ -166,7 +166,7 @@ mi_decl_export void mi_process_info(size_t* elapsed_msecs, size_t* user_msecs, s // Note that `alignment` always follows `size` for consistency with unaligned // allocation, but unfortunately this differs from `posix_memalign` and `aligned_alloc`. // ------------------------------------------------------------------------------------- -#define MI_ALIGNED_MAX (1024*1024UL) // maximum supported alignment is 1MiB +#define MI_ALIGNMENT_MAX (1024*1024UL) // maximum supported alignment is 1MiB mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_malloc_aligned(size_t size, size_t alignment) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1) mi_attr_alloc_align(2); mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_malloc_aligned_at(size_t size, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1); diff --git a/src/alloc-aligned.c b/src/alloc-aligned.c index 3a608b83..6b15e653 100644 --- a/src/alloc-aligned.c +++ b/src/alloc-aligned.c @@ -18,7 +18,7 @@ terms of the MIT license. A copy of the license can be found in the file static mi_decl_noinline void* mi_heap_malloc_zero_aligned_at_fallback(mi_heap_t* const heap, const size_t size, const size_t alignment, const size_t offset, const bool zero) mi_attr_noexcept { mi_assert_internal(size <= PTRDIFF_MAX); - mi_assert_internal(alignment!=0 && _mi_is_power_of_two(alignment) && alignment <= MI_ALIGNED_MAX); + mi_assert_internal(alignment!=0 && _mi_is_power_of_two(alignment) && alignment <= MI_ALIGNMENT_MAX); const uintptr_t align_mask = alignment-1; // for any x, `(x & align_mask) == (x % alignment)` const size_t padsize = size + MI_PADDING_SIZE; @@ -55,9 +55,9 @@ static void* mi_heap_malloc_zero_aligned_at(mi_heap_t* const heap, const size_t #endif return NULL; } - if (mi_unlikely(alignment > MI_ALIGNED_MAX)) { // we cannot align at a boundary larger than this (or otherwise we cannot find segment headers) + if (mi_unlikely(alignment > MI_ALIGNMENT_MAX)) { // we cannot align at a boundary larger than this (or otherwise we cannot find segment headers) #if MI_DEBUG > 0 - _mi_error_message(EOVERFLOW, "aligned allocation has a maximum alignment of %zu (size %zu, alignment %zu)\n", MI_ALIGNED_MAX, size, alignment); + _mi_error_message(EOVERFLOW, "aligned allocation has a maximum alignment of %zu (size %zu, alignment %zu)\n", MI_ALIGNMENT_MAX, size, alignment); #endif return NULL; } diff --git a/test/test-api.c b/test/test-api.c index 56835d00..96817337 100644 --- a/test/test-api.c +++ b/test/test-api.c @@ -159,20 +159,26 @@ int main(void) { void* p = mi_malloc_aligned(4097,4096); size_t usable = mi_usable_size(p); result = usable >= 4097 && usable < 10000; mi_free(p); }); CHECK_BODY("malloc-aligned6", { - void* p; bool ok = true; - for (int i = 1; i < 8 && ok; i++) { - size_t align = (size_t)1 << i; - p = mi_malloc_aligned(2*align, align); - ok = (p != NULL && (uintptr_t)(p) % align == 0); mi_free(p); + for (size_t align = 1; align <= MI_ALIGNMENT_MAX && ok; align *= 2) { + void* ps[8]; + for (int i = 0; i < 8 && ok; i++) { + ps[i] = mi_malloc_aligned(align/2 /*size*/, align); + if (ps[i] == NULL || (uintptr_t)(ps[i]) % align != 0) { + ok = false; + } + } + for (int i = 0; i < 8 && ok; i++) { + mi_free(ps[i]); + } } result = ok; }); CHECK_BODY("malloc-aligned7", { - void* p = mi_malloc_aligned(1024,MI_ALIGNED_MAX); mi_free(p); + void* p = mi_malloc_aligned(1024,MI_ALIGNMENT_MAX); mi_free(p); }); CHECK_BODY("malloc-aligned8", { - void* p = mi_malloc_aligned(1024,2*MI_ALIGNED_MAX); mi_free(p); + void* p = mi_malloc_aligned(1024,2*MI_ALIGNMENT_MAX); mi_free(p); }); CHECK_BODY("malloc-aligned-at1", { void* p = mi_malloc_aligned_at(48,32,0); result = (p != NULL && ((uintptr_t)(p) + 0) % 32 == 0); mi_free(p); From f16435447c53d90b61f1bce6da90c4759d5d7f5b Mon Sep 17 00:00:00 2001 From: daan Date: Sat, 18 Dec 2021 11:37:00 -0800 Subject: [PATCH 24/60] fix bug in freeing huge OS page allocation spanning multiple huge OS pages --- src/os.c | 5 +++-- test/test-api.c | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/src/os.c b/src/os.c index 45182f64..c31df757 100644 --- a/src/os.c +++ b/src/os.c @@ -1254,8 +1254,8 @@ void* _mi_os_alloc_huge_os_pages(size_t pages, int numa_node, mi_msecs_t max_mse } } mi_assert_internal(page*MI_HUGE_OS_PAGE_SIZE <= size); - if (pages_reserved != NULL) *pages_reserved = page; - if (psize != NULL) *psize = page * MI_HUGE_OS_PAGE_SIZE; + if (pages_reserved != NULL) { *pages_reserved = page; } + if (psize != NULL) { *psize = page * MI_HUGE_OS_PAGE_SIZE; } return (page == 0 ? NULL : start); } @@ -1267,6 +1267,7 @@ void _mi_os_free_huge_pages(void* p, size_t size, mi_stats_t* stats) { while (size >= MI_HUGE_OS_PAGE_SIZE) { _mi_os_free(base, MI_HUGE_OS_PAGE_SIZE, stats); size -= MI_HUGE_OS_PAGE_SIZE; + base += MI_HUGE_OS_PAGE_SIZE; } } diff --git a/test/test-api.c b/test/test-api.c index 96817337..f057799a 100644 --- a/test/test-api.c +++ b/test/test-api.c @@ -163,7 +163,7 @@ int main(void) { for (size_t align = 1; align <= MI_ALIGNMENT_MAX && ok; align *= 2) { void* ps[8]; for (int i = 0; i < 8 && ok; i++) { - ps[i] = mi_malloc_aligned(align/2 /*size*/, align); + ps[i] = mi_malloc_aligned(align*13 /*size*/, align); if (ps[i] == NULL || (uintptr_t)(ps[i]) % align != 0) { ok = false; } From 9f01c661511bfb4636227d46a2ac70cd4442a6a3 Mon Sep 17 00:00:00 2001 From: daan Date: Sat, 18 Dec 2021 16:36:37 -0800 Subject: [PATCH 25/60] update documentation --- doc/mimalloc-doc.h | 51 ++- docs/annotated.html | 22 +- docs/bench.html | 28 +- docs/build.html | 47 ++- docs/classes.html | 37 +- docs/doxygen.css | 175 +++++---- docs/dynsections.js | 33 +- docs/environment.html | 27 +- docs/functions.html | 22 +- docs/functions_vars.html | 22 +- docs/group__aligned.html | 52 ++- docs/group__aligned.js | 1 + docs/group__analysis.html | 32 +- docs/group__cpp.html | 41 +-- docs/group__extended.html | 187 ++++++++-- docs/group__extended.js | 2 + docs/group__heap.html | 54 ++- docs/group__malloc.html | 48 ++- docs/group__options.html | 64 ++-- docs/group__options.js | 1 + docs/group__posix.html | 66 +++- docs/group__posix.js | 1 + docs/group__typed.html | 51 ++- docs/group__zeroinit.html | 22 +- docs/index.html | 27 +- docs/jquery.js | 94 ++--- docs/mimalloc-doc_8h_source.html | 611 +++++++++++++++++++++++-------- docs/modules.html | 22 +- docs/navtree.js | 74 ++-- docs/navtreedata.js | 33 +- docs/navtreeindex0.js | 73 ++-- docs/overrides.html | 92 ++++- docs/pages.html | 22 +- docs/resize.js | 38 +- docs/search/all_0.html | 19 +- docs/search/all_0.js | 2 +- docs/search/all_1.html | 19 +- docs/search/all_1.js | 2 +- docs/search/all_2.html | 19 +- docs/search/all_2.js | 8 +- docs/search/all_3.html | 19 +- docs/search/all_3.js | 4 +- docs/search/all_4.html | 19 +- docs/search/all_4.js | 4 +- docs/search/all_5.html | 19 +- docs/search/all_5.js | 4 +- docs/search/all_6.html | 19 +- docs/search/all_6.js | 295 +++++++-------- docs/search/all_7.html | 19 +- docs/search/all_7.js | 2 +- docs/search/all_8.html | 19 +- docs/search/all_8.js | 4 +- docs/search/all_9.html | 19 +- docs/search/all_9.js | 4 +- docs/search/all_a.html | 19 +- docs/search/all_a.js | 2 +- docs/search/all_b.html | 19 +- docs/search/all_b.js | 4 +- docs/search/all_c.html | 19 +- docs/search/all_c.js | 2 +- docs/search/classes_0.html | 19 +- docs/search/classes_0.js | 4 +- docs/search/enums_0.html | 19 +- docs/search/enums_0.js | 2 +- docs/search/enumvalues_0.html | 19 +- docs/search/enumvalues_0.js | 2 +- docs/search/enumvalues_1.html | 19 +- docs/search/enumvalues_1.js | 31 +- docs/search/functions_0.html | 19 +- docs/search/functions_0.js | 223 +++++------ docs/search/groups_0.html | 19 +- docs/search/groups_0.js | 2 +- docs/search/groups_1.html | 19 +- docs/search/groups_1.js | 2 +- docs/search/groups_2.html | 19 +- docs/search/groups_2.js | 2 +- docs/search/groups_3.html | 19 +- docs/search/groups_3.js | 2 +- docs/search/groups_4.html | 19 +- docs/search/groups_4.js | 4 +- docs/search/groups_5.html | 19 +- docs/search/groups_5.js | 2 +- docs/search/groups_6.html | 19 +- docs/search/groups_6.js | 2 +- docs/search/groups_7.html | 19 +- docs/search/groups_7.js | 2 +- docs/search/groups_8.html | 19 +- docs/search/groups_8.js | 2 +- docs/search/nomatches.html | 3 +- docs/search/pages_0.html | 19 +- docs/search/pages_0.js | 2 +- docs/search/pages_1.html | 19 +- docs/search/pages_1.js | 2 +- docs/search/pages_2.html | 19 +- docs/search/pages_2.js | 2 +- docs/search/pages_3.html | 19 +- docs/search/pages_3.js | 2 +- docs/search/pages_4.html | 19 +- docs/search/pages_4.js | 2 +- docs/search/search.js | 52 +-- docs/search/typedefs_0.html | 19 +- docs/search/typedefs_0.js | 10 +- docs/search/variables_0.html | 19 +- docs/search/variables_0.js | 4 +- docs/search/variables_1.html | 19 +- docs/search/variables_1.js | 2 +- docs/search/variables_2.html | 19 +- docs/search/variables_2.js | 2 +- docs/search/variables_3.html | 19 +- docs/search/variables_3.js | 2 +- docs/using.html | 69 +++- 111 files changed, 2220 insertions(+), 1428 deletions(-) diff --git a/doc/mimalloc-doc.h b/doc/mimalloc-doc.h index e2287fe9..4cf8c2c3 100644 --- a/doc/mimalloc-doc.h +++ b/doc/mimalloc-doc.h @@ -51,7 +51,7 @@ Notable aspects of the design include: programs. - __secure__: _mimalloc_ can be build in secure mode, adding guard pages, randomized allocation, encrypted free lists, etc. to protect against various - heap vulnerabilities. The performance penalty is only around 3% on average + heap vulnerabilities. The performance penalty is only around 5% on average over our benchmarks. - __first-class heaps__: efficiently create and use multiple heaps to allocate across different regions. A heap can be destroyed at once instead of deallocating each object separately. @@ -413,6 +413,28 @@ void mi_register_error(mi_error_fun* errfun, void* arg); /// This function is relatively fast. bool mi_is_in_heap_region(const void* p); +/// Reserve OS memory for use by mimalloc. Reserved areas are used +/// before allocating from the OS again. By reserving a large area upfront, +/// allocation can be more efficient, and can be better managed on systems +/// without `mmap`/`VirtualAlloc` (like WASM for example). +/// @param size The size to reserve. +/// @param commit Commit the memory upfront. +/// @param allow_large Allow large OS pages (2MiB) to be used? +/// @return \a 0 if successful, and an error code otherwise (e.g. `ENOMEM`). +int mi_reserve_os_memory(size_t size, bool commit, bool allow_large); + +/// Manage a particular memory area for use by mimalloc. +/// This is just like `mi_reserve_os_memory` except that the area should already be +/// allocated in some manner and available for use my mimalloc. +/// @param start Start of the memory area +/// @param size The size of the memory area. +/// @param commit Is the area already committed? +/// @param is_large Does it consist of large OS pages? Set this to \a true as well for memory +/// that should not be decommitted or protected (like rdma etc.) +/// @param is_zero Does the area consists of zero's? +/// @param numa_node Possible associated numa node or `-1`. +/// @return \a true if successful, and \a false on error. +bool mi_manage_os_memory(void* start, size_t size, bool is_committed, bool is_large, bool is_zero, int numa_node); /// Reserve \a pages of huge OS pages (1GiB) evenly divided over \a numa_nodes nodes, /// but stops after at most `timeout_msecs` seconds. @@ -476,9 +498,12 @@ void mi_process_info(size_t* elapsed_msecs, size_t* user_msecs, size_t* system_m /// /// \{ +/// The maximum supported alignment size (currently 1MiB). +#define MI_ALIGNMENT_MAX (1024*1024UL) + /// Allocate \a size bytes aligned by \a alignment. /// @param size number of bytes to allocate. -/// @param alignment the minimal alignment of the allocated memory. +/// @param alignment the minimal alignment of the allocated memory. Must be less than #MI_ALIGNMENT_MAX. /// @returns pointer to the allocated memory or \a NULL if out of memory. /// The returned pointer is aligned by \a alignment, i.e. /// `(uintptr_t)p % alignment == 0`. @@ -829,8 +854,14 @@ void* mi_valloc(size_t size); void* mi_pvalloc(size_t size); void* mi_aligned_alloc(size_t alignment, size_t size); + +/// Correspond s to [reallocarray](https://www.freebsd.org/cgi/man.cgi?query=reallocarray&sektion=3&manpath=freebsd-release-ports) +/// in FreeBSD. void* mi_reallocarray(void* p, size_t count, size_t size); +/// Corresponds to [reallocarr](https://man.netbsd.org/reallocarr.3) in NetBSD. +int mi_reallocarr(void* p, size_t count, size_t size); + void mi_free_size(void* p, size_t size); void mi_free_size_aligned(void* p, size_t size, size_t alignment); void mi_free_aligned(void* p, size_t alignment); @@ -1161,6 +1192,12 @@ void* calloc(size_t size, size_t n); void* realloc(void* p, size_t newsize); void free(void* p); +void* aligned_alloc(size_t alignment, size_t size); +char* strdup(const char* s); +char* strndup(const char* s, size_t n); +char* realpath(const char* fname, char* resolved_name); + + // C++ void operator delete(void* p); void operator delete[](void* p); @@ -1180,16 +1217,24 @@ int posix_memalign(void** p, size_t alignment, size_t size); // Linux void* memalign(size_t alignment, size_t size); -void* aligned_alloc(size_t alignment, size_t size); void* valloc(size_t size); void* pvalloc(size_t size); size_t malloc_usable_size(void *p); +void* reallocf(void* p, size_t newsize); + +// macOS +void vfree(void* p); +size_t malloc_size(const void* p); +size_t malloc_good_size(size_t size); // BSD void* reallocarray( void* p, size_t count, size_t size ); void* reallocf(void* p, size_t newsize); void cfree(void* p); +// NetBSD +int reallocarr(void* p, size_t count, size_t size); + // Windows void* _expand(void* p, size_t newsize); size_t _msize(void* p); diff --git a/docs/annotated.html b/docs/annotated.html index feba2438..f3e392a4 100644 --- a/docs/annotated.html +++ b/docs/annotated.html @@ -3,7 +3,7 @@ - + mi-malloc: Data Structures @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
mi-malloc -  1.6 +  1.7/2.0
- @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
@@ -60,10 +56,10 @@ - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
@@ -113,9 +109,7 @@ $(document).ready(function(){initNavTree('annotated.html','');}); diff --git a/docs/bench.html b/docs/bench.html index f39fade6..6c472895 100644 --- a/docs/bench.html +++ b/docs/bench.html @@ -3,7 +3,7 @@ - + mi-malloc: Performance @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
mi-malloc -  1.6 +  1.7/2.0
- @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
@@ -60,10 +56,10 @@
- + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
@@ -103,17 +99,15 @@ $(document).ready(function(){initNavTree('bench.html','');});

We tested mimalloc against many other top allocators over a wide range of benchmarks, ranging from various real world programs to synthetic benchmarks that see how the allocator behaves under more extreme circumstances.

-

In our benchmarks, mimalloc always outperforms all other leading allocators (jemalloc, tcmalloc, Hoard, etc) (Apr 2019), and usually uses less memory (up to 25% more in the worst case). A nice property is that it does consistently well over the wide range of benchmarks.

+

In our benchmarks, mimalloc always outperforms all other leading allocators (jemalloc, tcmalloc, Hoard, etc) (Jan 2021), and usually uses less memory (up to 25% more in the worst case). A nice property is that it does consistently well over the wide range of benchmarks.

See the Performance section in the mimalloc repository for benchmark results, or the the technical report for detailed benchmark results.

-
- + + diff --git a/docs/build.html b/docs/build.html index 2bd06f13..dbcc0d75 100644 --- a/docs/build.html +++ b/docs/build.html @@ -3,7 +3,7 @@ - + mi-malloc: Building @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
mi-malloc -  1.6 +  1.7/2.0
- @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
@@ -60,10 +56,10 @@ - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
@@ -102,28 +98,39 @@ $(document).ready(function(){initNavTree('build.html','');});
Building
-

Checkout the sources from Github:

git clone https://github.com/microsoft/mimalloc

Windows

+

Checkout the sources from Github:

git clone https://github.com/microsoft/mimalloc
+

Windows

Open ide/vs2019/mimalloc.sln in Visual Studio 2019 and build (or ide/vs2017/mimalloc.sln). The mimalloc project builds a static library (in out/msvc-x64), while the mimalloc-override project builds a DLL for overriding malloc in the entire program.

macOS, Linux, BSD, etc.

We use cmake1 as the build system:

-
> mkdir -p out/release
> cd out/release
> cmake ../..
> make

This builds the library as a shared (dynamic) library (.so or .dylib), a static library (.a), and as a single object file (.o).

+
> mkdir -p out/release
+
> cd out/release
+
> cmake ../..
+
> make
+

This builds the library as a shared (dynamic) library (.so or .dylib), a static library (.a), and as a single object file (.o).

> sudo make install (install the library and header files in /usr/local/lib and /usr/local/include)

You can build the debug version which does many internal checks and maintains detailed statistics as:

-
> mkdir -p out/debug
> cd out/debug
> cmake -DCMAKE_BUILD_TYPE=Debug ../..
> make

This will name the shared library as libmimalloc-debug.so.

-

Finally, you can build a secure version that uses guard pages, encrypted free lists, etc, as:

> mkdir -p out/secure
> cd out/secure
> cmake -DMI_SECURE=ON ../..
> make

This will name the shared library as libmimalloc-secure.so. Use ccmake2 instead of cmake to see and customize all the available build options.

+
> mkdir -p out/debug
+
> cd out/debug
+
> cmake -DCMAKE_BUILD_TYPE=Debug ../..
+
> make
+

This will name the shared library as libmimalloc-debug.so.

+

Finally, you can build a secure version that uses guard pages, encrypted free lists, etc, as:

> mkdir -p out/secure
+
> cd out/secure
+
> cmake -DMI_SECURE=ON ../..
+
> make
+

This will name the shared library as libmimalloc-secure.so. Use ccmake2 instead of cmake to see and customize all the available build options.

Notes:

  1. Install CMake: sudo apt-get install cmake
  2. Install CCMake: sudo apt-get install cmake-curses-gui
-
-
+ + diff --git a/docs/classes.html b/docs/classes.html index e74a0a24..b744c4d9 100644 --- a/docs/classes.html +++ b/docs/classes.html @@ -3,7 +3,7 @@ - + mi-malloc: Data Structure Index @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
mi-malloc -  1.6 +  1.7/2.0
- @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
@@ -60,10 +56,10 @@ - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
@@ -102,23 +98,18 @@ $(document).ready(function(){initNavTree('classes.html','');});
Data Structure Index
-
m
- - - - - -
  m  
-		mi_stl_allocator   
mi_heap_area_t   
-
m
+
M
+
+
+
M
+
mi_heap_area_t
mi_stl_allocator
+
diff --git a/docs/doxygen.css b/docs/doxygen.css index 72384716..f090ef79 100644 --- a/docs/doxygen.css +++ b/docs/doxygen.css @@ -1,4 +1,4 @@ -/* The standard CSS for doxygen 1.8.15 */ +/* The standard CSS for doxygen 1.9.1 */ body, table, div, p, dl { font: 400 14px/22px Roboto,sans-serif; @@ -53,17 +53,24 @@ dt { font-weight: bold; } -div.multicol { +ul.multicol { -moz-column-gap: 1em; -webkit-column-gap: 1em; + column-gap: 1em; -moz-column-count: 3; -webkit-column-count: 3; + column-count: 3; } p.startli, p.startdd { margin-top: 2px; } +th p.starttd, th p.intertd, th p.endtd { + font-size: 100%; + font-weight: 700; +} + p.starttd { margin-top: 0px; } @@ -96,30 +103,96 @@ caption { } span.legend { - font-size: 70%; - text-align: center; -} - -h3.version { - font-size: 90%; - text-align: center; -} - -div.qindex, div.navtab{ - background-color: #D6D9D9; - border: 1px solid #636C6D; + font-size: 70%; text-align: center; } -div.qindex, div.navpath { - width: 100%; - line-height: 140%; +h3.version { + font-size: 90%; + text-align: center; } div.navtab { - margin-right: 15px; + border-right: 1px solid #636C6D; + padding-right: 15px; + text-align: right; + line-height: 110%; } +div.navtab table { + border-spacing: 0; +} + +td.navtab { + padding-right: 6px; + padding-left: 6px; +} +td.navtabHL { + background-image: url('tab_a.png'); + background-repeat:repeat-x; + padding-right: 6px; + padding-left: 6px; +} + +td.navtabHL a, td.navtabHL a:visited { + color: #fff; + text-shadow: 0px 1px 1px rgba(0, 0, 0, 1.0); +} + +a.navtab { + font-weight: bold; +} + +div.qindex{ + text-align: center; + width: 100%; + line-height: 140%; + font-size: 130%; + color: #A0A0A0; +} + +dt.alphachar{ + font-size: 180%; + font-weight: bold; +} + +.alphachar a{ + color: black; +} + +.alphachar a:hover, .alphachar a:visited{ + text-decoration: none; +} + +.classindex dl { + padding: 25px; + column-count:1 +} + +.classindex dd { + display:inline-block; + margin-left: 50px; + width: 90%; + line-height: 1.15em; +} + +.classindex dl.odd { + background-color: #F0F1F1; +} + +@media(min-width: 1120px) { + .classindex dl { + column-count:2 + } +} + +@media(min-width: 1320px) { + .classindex dl { + column-count:3 + } +} + + /* @group Link Styling */ a { @@ -136,17 +209,6 @@ a:hover { text-decoration: underline; } -a.qindex { - font-weight: bold; -} - -a.qindexHL { - font-weight: bold; - background-color: #5B6364; - color: #FFFFFF; - border: 1px double #464C4D; -} - .contents a.qindexHL:visited { color: #FFFFFF; } @@ -533,7 +595,7 @@ table.memberdecls { white-space: nowrap; } -.memItemRight { +.memItemRight, .memTemplItemRight { width: 100%; } @@ -701,7 +763,7 @@ dl.reflist dd { padding-left: 0px; } -.params .paramname, .retval .paramname, .tparams .paramname { +.params .paramname, .retval .paramname, .tparams .paramname, .exception .paramname { font-weight: bold; vertical-align: top; } @@ -1351,10 +1413,12 @@ dl.citelist dt { font-weight:bold; margin-right:10px; padding:5px; + text-align:right; + width:52px; } dl.citelist dd { - margin:2px 0; + margin:2px 0 2px 72px; padding:5px 0; } @@ -1417,6 +1481,12 @@ div.toc li.level4 { margin-left: 45px; } +span.emoji { + /* font family used at the site: https://unicode.org/emoji/charts/full-emoji-list.html + * font-family: "Noto Color Emoji", "Apple Color Emoji", "Segoe UI Emoji", Times, Symbola, Aegyptus, Code2000, Code2001, Code2002, Musica, serif, LastResort; + */ +} + .PageDocRTL-title div.toc li.level1 { margin-left: 0 !important; margin-right: 0; @@ -1654,47 +1724,6 @@ tr.heading h2 { /* @group Markdown */ -/* -table.markdownTable { - border-collapse:collapse; - margin-top: 4px; - margin-bottom: 4px; -} - -table.markdownTable td, table.markdownTable th { - border: 1px solid #060606; - padding: 3px 7px 2px; -} - -table.markdownTableHead tr { -} - -table.markdownTableBodyLeft td, table.markdownTable th { - border: 1px solid #060606; - padding: 3px 7px 2px; -} - -th.markdownTableHeadLeft th.markdownTableHeadRight th.markdownTableHeadCenter th.markdownTableHeadNone { - background-color: #0B0C0C; - color: #FFFFFF; - font-size: 110%; - padding-bottom: 4px; - padding-top: 5px; -} - -th.markdownTableHeadLeft { - text-align: left -} - -th.markdownTableHeadRight { - text-align: right -} - -th.markdownTableHeadCenter { - text-align: center -} -*/ - table.markdownTable { border-collapse:collapse; margin-top: 4px; diff --git a/docs/dynsections.js b/docs/dynsections.js index ea0a7b39..3174bd7b 100644 --- a/docs/dynsections.js +++ b/docs/dynsections.js @@ -1,25 +1,26 @@ /* - @licstart The following is the entire license notice for the - JavaScript code in this file. + @licstart The following is the entire license notice for the JavaScript code in this file. - Copyright (C) 1997-2017 by Dimitri van Heesch + The MIT License (MIT) - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. + Copyright (C) 1997-2020 by Dimitri van Heesch - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. + Permission is hereby granted, free of charge, to any person obtaining a copy of this software + and associated documentation files (the "Software"), to deal in the Software without restriction, + including without limitation the rights to use, copy, modify, merge, publish, distribute, + sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + The above copyright notice and this permission notice shall be included in all copies or + substantial portions of the Software. - @licend The above is the entire license notice - for the JavaScript code in this file + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING + BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, + DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + @licend The above is the entire license notice for the JavaScript code in this file */ function toggleVisibility(linkObj) { diff --git a/docs/environment.html b/docs/environment.html index 87d67e4a..f571f95f 100644 --- a/docs/environment.html +++ b/docs/environment.html @@ -3,7 +3,7 @@ - + mi-malloc: Environment Options @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
mi-malloc -  1.6 +  1.7/2.0
- @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
@@ -60,10 +56,10 @@ - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
@@ -110,17 +106,16 @@ $(document).ready(function(){initNavTree('environment.html','');});
  • MIMALLOC_PAGE_RESET=0: by default, mimalloc will reset (or purge) OS pages when not in use to signal to the OS that the underlying physical memory can be reused. This can reduce memory fragmentation in long running (server) programs. By setting it to 0 no such page resets will be done which can improve performance for programs that are not long running. As an alternative, the MIMALLOC_RESET_DELAY=<msecs> can be set higher (100ms by default) to make the page reset occur less frequently instead of turning it off completely.
  • MIMALLOC_LARGE_OS_PAGES=1: use large OS pages (2MiB) when available; for some workloads this can significantly improve performance. Use MIMALLOC_VERBOSE to check if the large OS pages are enabled – usually one needs to explicitly allow large OS pages (as on Windows and Linux). However, sometimes the OS is very slow to reserve contiguous physical memory for large OS pages so use with care on systems that can have fragmented memory (for that reason, we generally recommend to use MIMALLOC_RESERVE_HUGE_OS_PAGES instead when possible).
  • MIMALLOC_RESERVE_HUGE_OS_PAGES=N: where N is the number of 1GiB huge OS pages. This reserves the huge pages at startup and sometimes this can give a large (latency) performance improvement on big workloads. Usually it is better to not use MIMALLOC_LARGE_OS_PAGES in combination with this setting. Just like large OS pages, use with care as reserving contiguous physical memory can take a long time when memory is fragmented (but reserving the huge pages is done at startup only once). Note that we usually need to explicitly enable huge OS pages (as on Windows and Linux)). With huge OS pages, it may be beneficial to set the setting MIMALLOC_EAGER_COMMIT_DELAY=N (N is 1 by default) to delay the initial N segments (of 4MiB) of a thread to not allocate in the huge OS pages; this prevents threads that are short lived and allocate just a little to take up space in the huge OS page area (which cannot be reset).
    • +
  • MIMALLOC_RESERVE_HUGE_OS_PAGES_AT=N: where N is the numa node. This reserves the huge pages at a specific numa node. (N is -1 by default to reserve huge pages evenly among the given number of numa nodes (or use the available ones as detected))

    • Use caution when using fork in combination with either large or huge OS pages: on a fork, the OS uses copy-on-write for all pages in the original process including the huge OS pages. When any memory is now written in that area, the OS will copy the entire 1GiB huge page (or 2MiB large page) which can cause the memory usage to grow in big increments.

    -
    - + + diff --git a/docs/functions.html b/docs/functions.html index 62021210..373fafe2 100644 --- a/docs/functions.html +++ b/docs/functions.html @@ -3,7 +3,7 @@ - + mi-malloc: Data Fields @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@ - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -120,9 +116,7 @@ $(document).ready(function(){initNavTree('functions.html','');}); diff --git a/docs/functions_vars.html b/docs/functions_vars.html index 7d41d10e..a12ef622 100644 --- a/docs/functions_vars.html +++ b/docs/functions_vars.html @@ -3,7 +3,7 @@ - + mi-malloc: Data Fields - Variables @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@
    - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -120,9 +116,7 @@ $(document).ready(function(){initNavTree('functions_vars.html','');}); diff --git a/docs/group__aligned.html b/docs/group__aligned.html index a3eaacf0..bd11f30f 100644 --- a/docs/group__aligned.html +++ b/docs/group__aligned.html @@ -3,7 +3,7 @@ - + mi-malloc: Aligned Allocation @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@
    - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -99,6 +95,7 @@ $(document).ready(function(){initNavTree('group__aligned.html','');});
    +Macros | Functions
    Aligned Allocation
    @@ -108,10 +105,16 @@ $(document).ready(function(){initNavTree('group__aligned.html','');});

    Allocating aligned memory blocks. More...

    + + + + +

    +Macros

    #define MI_ALIGNMENT_MAX
     The maximum supported alignment size (currently 1MiB). More...
     
    - + @@ -120,7 +123,7 @@ Functions - + @@ -131,6 +134,23 @@ Functions

    Functions

    void * mi_malloc_aligned (size_t size, size_t alignment)
     Allocate size bytes aligned by alignment. More...
     Allocate size bytes aligned by alignment. More...
     
    void * mi_zalloc_aligned (size_t size, size_t alignment)
     
    void * mi_realloc_aligned (void *p, size_t newsize, size_t alignment)
     
    void * mi_malloc_aligned_at (size_t size, size_t alignment, size_t offset)
     Allocate size bytes aligned by alignment at a specified offset. More...
     Allocate size bytes aligned by alignment at a specified offset. More...
     
    void * mi_zalloc_aligned_at (size_t size, size_t alignment, size_t offset)
     

    Detailed Description

    Allocating aligned memory blocks.

    +

    Macro Definition Documentation

    + +

    ◆ MI_ALIGNMENT_MAX

    + +
    +
    + + + + +
    #define MI_ALIGNMENT_MAX
    +
    + +

    The maximum supported alignment size (currently 1MiB).

    + +
    +

    Function Documentation

    ◆ mi_calloc_aligned()

    @@ -236,7 +256,7 @@ Functions
    Parameters
    - +
    sizenumber of bytes to allocate.
    alignmentthe minimal alignment of the allocated memory.
    alignmentthe minimal alignment of the allocated memory. Must be less than MI_ALIGNMENT_MAX.
    @@ -438,9 +458,7 @@ Functions diff --git a/docs/group__aligned.js b/docs/group__aligned.js index 0a5aa5c8..06ccb0c3 100644 --- a/docs/group__aligned.js +++ b/docs/group__aligned.js @@ -1,5 +1,6 @@ var group__aligned = [ + [ "MI_ALIGNMENT_MAX", "group__aligned.html#ga83c03016066b438f51a8095e9140be06", null ], [ "mi_calloc_aligned", "group__aligned.html#ga53dddb4724042a90315b94bc268fb4c9", null ], [ "mi_calloc_aligned_at", "group__aligned.html#ga08647c4593f3b2eef24a919a73eba3a3", null ], [ "mi_malloc_aligned", "group__aligned.html#ga68930196751fa2cca9e1fd0d71bade56", null ], diff --git a/docs/group__analysis.html b/docs/group__analysis.html index 2487c240..883099fe 100644 --- a/docs/group__analysis.html +++ b/docs/group__analysis.html @@ -3,7 +3,7 @@ - + mi-malloc: Heap Introspection @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@
    - +
    @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -119,22 +115,22 @@ Data Structures

    Typedefs

    typedef bool() mi_block_visit_fun(const mi_heap_t *heap, const mi_heap_area_t *area, void *block, size_t block_size, void *arg) - Visitor function passed to mi_heap_visit_blocks() More...
    + Visitor function passed to mi_heap_visit_blocks() More...
      - + - + - + - +

    Functions

    bool mi_heap_contains_block (mi_heap_t *heap, const void *p)
     Does a heap contain a pointer to a previously allocated block? More...
     Does a heap contain a pointer to a previously allocated block? More...
     
    bool mi_heap_check_owned (mi_heap_t *heap, const void *p)
     Check safely if any pointer is part of a heap. More...
     Check safely if any pointer is part of a heap. More...
     
    bool mi_check_owned (const void *p)
     Check safely if any pointer is part of the default heap of this thread. More...
     Check safely if any pointer is part of the default heap of this thread. More...
     
    bool mi_heap_visit_blocks (const mi_heap_t *heap, bool visit_all_blocks, mi_block_visit_fun *visitor, void *arg)
     Visit all areas and blocks in a heap. More...
     Visit all areas and blocks in a heap. More...
     

    Detailed Description

    @@ -376,9 +372,7 @@ bytes in use by allocated blocks diff --git a/docs/group__cpp.html b/docs/group__cpp.html index 88c75888..e81179fe 100644 --- a/docs/group__cpp.html +++ b/docs/group__cpp.html @@ -3,7 +3,7 @@ - + mi-malloc: C++ wrappers @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@
    - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -118,25 +114,25 @@ Data Structures

    Functions

    void * mi_new (std::size_t n) noexcept(false) - like mi_malloc(), but when out of memory, use std::get_new_handler and raise std::bad_alloc exception on failure. More...
    + like mi_malloc(), but when out of memory, use std::get_new_handler and raise std::bad_alloc exception on failure. More...
      void * mi_new_n (size_t count, size_t size) noexcept(false) - like mi_mallocn(), but when out of memory, use std::get_new_handler and raise std::bad_alloc exception on failure. More...
    + like mi_mallocn(), but when out of memory, use std::get_new_handler and raise std::bad_alloc exception on failure. More...
      void * mi_new_aligned (std::size_t n, std::align_val_t alignment) noexcept(false) - like mi_malloc_aligned(), but when out of memory, use std::get_new_handler and raise std::bad_alloc exception on failure. More...
    + like mi_malloc_aligned(), but when out of memory, use std::get_new_handler and raise std::bad_alloc exception on failure. More...
      void * mi_new_nothrow (size_t n) - like mi_malloc, but when out of memory, use std::get_new_handler but return NULL on failure. More...
    + like mi_malloc, but when out of memory, use std::get_new_handler but return NULL on failure. More...
      void * mi_new_aligned_nothrow (size_t n, size_t alignment) - like mi_malloc_aligned, but when out of memory, use std::get_new_handler but return NULL on failure. More...
    + like mi_malloc_aligned, but when out of memory, use std::get_new_handler but return NULL on failure. More...
      void * mi_new_realloc (void *p, size_t newsize) - like mi_realloc(), but when out of memory, use std::get_new_handler and raise std::bad_alloc exception on failure. More...
    + like mi_realloc(), but when out of memory, use std::get_new_handler and raise std::bad_alloc exception on failure. More...
      void * mi_new_reallocn (void *p, size_t newcount, size_t size) - like mi_reallocn(), but when out of memory, use std::get_new_handler and raise std::bad_alloc exception on failure. More...
    + like mi_reallocn(), but when out of memory, use std::get_new_handler and raise std::bad_alloc exception on failure. More...
     

    Detailed Description

    @@ -158,7 +154,10 @@ Functions struct mi_stl_allocator< T >

    std::allocator implementation for mimalloc for use in STL containers.

    -

    For example:

    std::vector<int, mi_stl_allocator<int> > vec;
    vec.push_back(1);
    vec.pop_back();
    +

    For example:

    std::vector<int, mi_stl_allocator<int> > vec;
    +
    vec.push_back(1);
    +
    vec.pop_back();
    +

    Function Documentation

    @@ -387,9 +386,7 @@ struct mi_stl_allocator< T > diff --git a/docs/group__extended.html b/docs/group__extended.html index 12e51cbb..e5499118 100644 --- a/docs/group__extended.html +++ b/docs/group__extended.html @@ -3,7 +3,7 @@ - + mi-malloc: Extended Functions @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@ - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -113,82 +109,88 @@ $(document).ready(function(){initNavTree('group__extended.html','');});

    Macros

    #define MI_SMALL_SIZE_MAX - Maximum size allowed for small allocations in mi_malloc_small and mi_zalloc_small (usually 128*sizeof(void*) (= 1KB on 64-bit systems)) More...
    + Maximum size allowed for small allocations in mi_malloc_small and mi_zalloc_small (usually 128*sizeof(void*) (= 1KB on 64-bit systems)) More...
      - + - + - +

    Typedefs

    typedef void() mi_deferred_free_fun(bool force, unsigned long long heartbeat, void *arg)
     Type of deferred free functions. More...
     Type of deferred free functions. More...
     
    typedef void() mi_output_fun(const char *msg, void *arg)
     Type of output functions. More...
     Type of output functions. More...
     
    typedef void() mi_error_fun(int err, void *arg)
     Type of error callback functions. More...
     Type of error callback functions. More...
     
    - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + + + + + + + - + - + - + - +

    Functions

    void * mi_malloc_small (size_t size)
     Allocate a small object. More...
     Allocate a small object. More...
     
    void * mi_zalloc_small (size_t size)
     Allocate a zero initialized small object. More...
     Allocate a zero initialized small object. More...
     
    size_t mi_usable_size (void *p)
     Return the available bytes in a memory block. More...
     Return the available bytes in a memory block. More...
     
    size_t mi_good_size (size_t size)
     Return the used allocation size. More...
     Return the used allocation size. More...
     
    void mi_collect (bool force)
     Eagerly free memory. More...
     Eagerly free memory. More...
     
    void mi_stats_print (void *out)
     Deprecated. More...
     Deprecated. More...
     
    void mi_stats_print_out (mi_output_fun *out, void *arg)
     Print the main statistics. More...
     Print the main statistics. More...
     
    void mi_stats_reset (void)
     Reset statistics. More...
     Reset statistics. More...
     
    void mi_stats_merge (void)
     Merge thread local statistics with the main statistics and reset. More...
     Merge thread local statistics with the main statistics and reset. More...
     
    void mi_thread_init (void)
     Initialize mimalloc on a thread. More...
     Initialize mimalloc on a thread. More...
     
    void mi_thread_done (void)
     Uninitialize mimalloc on a thread. More...
     Uninitialize mimalloc on a thread. More...
     
    void mi_thread_stats_print_out (mi_output_fun *out, void *arg)
     Print out heap statistics for this thread. More...
     Print out heap statistics for this thread. More...
     
    void mi_register_deferred_free (mi_deferred_free_fun *deferred_free, void *arg)
     Register a deferred free function. More...
     Register a deferred free function. More...
     
    void mi_register_output (mi_output_fun *out, void *arg)
     Register an output function. More...
     Register an output function. More...
     
    void mi_register_error (mi_error_fun *errfun, void *arg)
     Register an error callback function. More...
     Register an error callback function. More...
     
    bool mi_is_in_heap_region (const void *p)
     Is a pointer part of our heap? More...
     Is a pointer part of our heap? More...
     
    int mi_reserve_os_memory (size_t size, bool commit, bool allow_large)
     Reserve OS memory for use by mimalloc. More...
     
    bool mi_manage_os_memory (void *start, size_t size, bool is_committed, bool is_large, bool is_zero, int numa_node)
     Manage a particular memory area for use by mimalloc. More...
     
    int mi_reserve_huge_os_pages_interleave (size_t pages, size_t numa_nodes, size_t timeout_msecs)
     Reserve pages of huge OS pages (1GiB) evenly divided over numa_nodes nodes, but stops after at most timeout_msecs seconds. More...
     Reserve pages of huge OS pages (1GiB) evenly divided over numa_nodes nodes, but stops after at most timeout_msecs seconds. More...
     
    int mi_reserve_huge_os_pages_at (size_t pages, int numa_node, size_t timeout_msecs)
     Reserve pages of huge OS pages (1GiB) at a specific numa_node, but stops after at most timeout_msecs seconds. More...
     Reserve pages of huge OS pages (1GiB) at a specific numa_node, but stops after at most timeout_msecs seconds. More...
     
    bool mi_is_redirected ()
     Is the C runtime malloc API redirected? More...
     Is the C runtime malloc API redirected? More...
     
    void mi_process_info (size_t *elapsed_msecs, size_t *user_msecs, size_t *system_msecs, size_t *current_rss, size_t *peak_rss, size_t *current_commit, size_t *peak_commit, size_t *page_faults)
     Return process information (time and memory usage). More...
     Return process information (time and memory usage). More...
     

    Detailed Description

    @@ -414,6 +416,72 @@ Functions
    Returns
    a pointer to newly allocated memory of at least size bytes, or NULL if out of memory. This function is meant for use in run-time systems for best performance and does not check if size was indeed small – use with care!
    +
    + + +

    ◆ mi_manage_os_memory()

    + +
    +
    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    bool mi_manage_os_memory (void * start,
    size_t size,
    bool is_committed,
    bool is_large,
    bool is_zero,
    int numa_node 
    )
    +
    + +

    Manage a particular memory area for use by mimalloc.

    +

    This is just like mi_reserve_os_memory except that the area should already be allocated in some manner and available for use my mimalloc.

    Parameters
    + + + + + + + +
    startStart of the memory area
    sizeThe size of the memory area.
    commitIs the area already committed?
    is_largeDoes it consist of large OS pages? Set this to true as well for memory that should not be decommitted or protected (like rdma etc.)
    is_zeroDoes the area consists of zero's?
    numa_nodePossible associated numa node or -1.
    +
    +
    +
    Returns
    true if successful, and false on error.
    +
    @@ -706,6 +774,51 @@ Functions
    Returns
    0 if successfull, ENOMEM if running out of memory, or ETIMEDOUT if timed out.

    The reserved memory is used by mimalloc to satisfy allocations. May quit before timeout_msecs are expired if it estimates it will take more than 1.5 times timeout_msecs. The time limit is needed because on some operating systems it can take a long time to reserve contiguous memory if the physical memory is fragmented.

    + + + +

    ◆ mi_reserve_os_memory()

    + +
    +
    + + + + + + + + + + + + + + + + + + + + + + + + +
    int mi_reserve_os_memory (size_t size,
    bool commit,
    bool allow_large 
    )
    +
    + +

    Reserve OS memory for use by mimalloc.

    +

    Reserved areas are used before allocating from the OS again. By reserving a large area upfront, allocation can be more efficient, and can be better managed on systems without mmap/VirtualAlloc (like WASM for example).

    Parameters
    + + + + +
    sizeThe size to reserve.
    commitCommit the memory upfront.
    allow_largeAllow large OS pages (2MiB) to be used?
    +
    +
    +
    Returns
    0 if successful, and an error code otherwise (e.g. ENOMEM).
    +
    @@ -958,9 +1071,7 @@ Functions diff --git a/docs/group__extended.js b/docs/group__extended.js index ed4a8b46..c217aaca 100644 --- a/docs/group__extended.js +++ b/docs/group__extended.js @@ -9,12 +9,14 @@ var group__extended = [ "mi_is_in_heap_region", "group__extended.html#ga5f071b10d4df1c3658e04e7fd67a94e6", null ], [ "mi_is_redirected", "group__extended.html#gaad25050b19f30cd79397b227e0157a3f", null ], [ "mi_malloc_small", "group__extended.html#ga7136c2e55cb22c98ecf95d08d6debb99", null ], + [ "mi_manage_os_memory", "group__extended.html#ga4c6486a1fdcd7a423b5f25fe4be8e0cf", null ], [ "mi_process_info", "group__extended.html#ga7d862c2affd5790381da14eb102a364d", null ], [ "mi_register_deferred_free", "group__extended.html#ga3460a6ca91af97be4058f523d3cb8ece", null ], [ "mi_register_error", "group__extended.html#gaa1d55e0e894be240827e5d87ec3a1f45", null ], [ "mi_register_output", "group__extended.html#gae5b17ff027cd2150b43a33040250cf3f", null ], [ "mi_reserve_huge_os_pages_at", "group__extended.html#ga7795a13d20087447281858d2c771cca1", null ], [ "mi_reserve_huge_os_pages_interleave", "group__extended.html#ga3132f521fb756fc0e8ec0b74fb58df50", null ], + [ "mi_reserve_os_memory", "group__extended.html#ga00ec3324b6b2591c7fe3677baa30a767", null ], [ "mi_stats_merge", "group__extended.html#ga854b1de8cb067c7316286c28b2fcd3d1", null ], [ "mi_stats_print", "group__extended.html#ga2d126e5c62d3badc35445e5d84166df2", null ], [ "mi_stats_print_out", "group__extended.html#ga537f13b299ddf801e49a5a94fde02c79", null ], diff --git a/docs/group__heap.html b/docs/group__heap.html index 1a38c936..0f21ea42 100644 --- a/docs/group__heap.html +++ b/docs/group__heap.html @@ -3,7 +3,7 @@ - + mi-malloc: Heap Allocation @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@ - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -112,55 +108,55 @@ $(document).ready(function(){initNavTree('group__heap.html','');});

    Typedefs

    typedef struct mi_heap_s mi_heap_t - Type of first-class heaps. More...
    + Type of first-class heaps. More...
      - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + @@ -1071,9 +1067,7 @@ Functions diff --git a/docs/group__malloc.html b/docs/group__malloc.html index 224c4b08..2dc16656 100644 --- a/docs/group__malloc.html +++ b/docs/group__malloc.html @@ -3,7 +3,7 @@ - +mi-malloc: Basic Allocation @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ @@ -60,10 +56,10 @@

    Functions

    mi_heap_t * mi_heap_new ()
     Create a new heap that can be used for allocation. More...
     Create a new heap that can be used for allocation. More...
     
    void mi_heap_delete (mi_heap_t *heap)
     Delete a previously allocated heap. More...
     Delete a previously allocated heap. More...
     
    void mi_heap_destroy (mi_heap_t *heap)
     Destroy a heap, freeing all its still allocated blocks. More...
     Destroy a heap, freeing all its still allocated blocks. More...
     
    mi_heap_t * mi_heap_set_default (mi_heap_t *heap)
     Set the default heap to use for mi_malloc() et al. More...
     Set the default heap to use for mi_malloc() et al. More...
     
    mi_heap_t * mi_heap_get_default ()
     Get the default heap that is used for mi_malloc() et al. More...
     Get the default heap that is used for mi_malloc() et al. More...
     
    mi_heap_t * mi_heap_get_backing ()
     Get the backing heap. More...
     Get the backing heap. More...
     
    void mi_heap_collect (mi_heap_t *heap, bool force)
     Release outstanding resources in a specific heap. More...
     Release outstanding resources in a specific heap. More...
     
    void * mi_heap_malloc (mi_heap_t *heap, size_t size)
     Allocate in a specific heap. More...
     Allocate in a specific heap. More...
     
    void * mi_heap_malloc_small (mi_heap_t *heap, size_t size)
     Allocate a small object in a specific heap. More...
     Allocate a small object in a specific heap. More...
     
    void * mi_heap_zalloc (mi_heap_t *heap, size_t size)
     Allocate zero-initialized in a specific heap. More...
     Allocate zero-initialized in a specific heap. More...
     
    void * mi_heap_calloc (mi_heap_t *heap, size_t count, size_t size)
     Allocate count zero-initialized elements in a specific heap. More...
     Allocate count zero-initialized elements in a specific heap. More...
     
    void * mi_heap_mallocn (mi_heap_t *heap, size_t count, size_t size)
     Allocate count elements in a specific heap. More...
     Allocate count elements in a specific heap. More...
     
    char * mi_heap_strdup (mi_heap_t *heap, const char *s)
     Duplicate a string in a specific heap. More...
     Duplicate a string in a specific heap. More...
     
    char * mi_heap_strndup (mi_heap_t *heap, const char *s, size_t n)
     Duplicate a string of at most length n in a specific heap. More...
     Duplicate a string of at most length n in a specific heap. More...
     
    char * mi_heap_realpath (mi_heap_t *heap, const char *fname, char *resolved_name)
     Resolve a file path name using a specific heap to allocate the result. More...
     Resolve a file path name using a specific heap to allocate the result. More...
     
    void * mi_heap_realloc (mi_heap_t *heap, void *p, size_t newsize)
     
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -111,43 +107,43 @@ $(document).ready(function(){initNavTree('group__malloc.html','');});

    Functions

    void mi_free (void *p) - Free previously allocated memory. More...
    + Free previously allocated memory. More...
      void * mi_malloc (size_t size) - Allocate size bytes. More...
    + Allocate size bytes. More...
      void * mi_zalloc (size_t size) - Allocate zero-initialized size bytes. More...
    + Allocate zero-initialized size bytes. More...
      void * mi_calloc (size_t count, size_t size) - Allocate zero-initialized count elements of size bytes. More...
    + Allocate zero-initialized count elements of size bytes. More...
      void * mi_realloc (void *p, size_t newsize) - Re-allocate memory to newsize bytes. More...
    + Re-allocate memory to newsize bytes. More...
      void * mi_recalloc (void *p, size_t count, size_t size) - Re-allocate memory to count elements of size bytes, with extra memory initialized to zero. More...
    + Re-allocate memory to count elements of size bytes, with extra memory initialized to zero. More...
      void * mi_expand (void *p, size_t newsize) - Try to re-allocate memory to newsize bytes in place. More...
    + Try to re-allocate memory to newsize bytes in place. More...
      void * mi_mallocn (size_t count, size_t size) - Allocate count elements of size bytes. More...
    + Allocate count elements of size bytes. More...
      void * mi_reallocn (void *p, size_t count, size_t size) - Re-allocate memory to count elements of size bytes. More...
    + Re-allocate memory to count elements of size bytes. More...
      void * mi_reallocf (void *p, size_t newsize) - Re-allocate memory to newsize bytes,. More...
    + Re-allocate memory to newsize bytes,. More...
      char * mi_strdup (const char *s) - Allocate and duplicate a string. More...
    + Allocate and duplicate a string. More...
      char * mi_strndup (const char *s, size_t n) - Allocate and duplicate a string up to n bytes. More...
    + Allocate and duplicate a string up to n bytes. More...
      char * mi_realpath (const char *fname, char *resolved_name) - Resolve a file path name. More...
    + Resolve a file path name. More...
     

    Detailed Description

    @@ -635,9 +631,7 @@ mi_zallocn() diff --git a/docs/group__options.html b/docs/group__options.html index 9425765e..f92905d4 100644 --- a/docs/group__options.html +++ b/docs/group__options.html @@ -3,7 +3,7 @@ - + mi-malloc: Runtime Options @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@
    - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -112,25 +108,27 @@ $(document).ready(function(){initNavTree('group__options.html','');});

    Enumerations

    enum  mi_option_t {
    -  mi_option_show_errors, -mi_option_show_stats, -mi_option_verbose, -mi_option_eager_commit, -
    -  mi_option_eager_region_commit, -mi_option_large_os_pages, -mi_option_reserve_huge_os_pages, -mi_option_segment_cache, -
    -  mi_option_page_reset, -mi_option_segment_reset, -mi_option_reset_delay, -mi_option_use_numa_nodes, -
    -  mi_option_reset_decommits, -mi_option_eager_commit_delay, -mi_option_os_tag, -_mi_option_last +  mi_option_show_errors +, mi_option_show_stats +, mi_option_verbose +, mi_option_eager_commit +,
    +  mi_option_eager_region_commit +, mi_option_large_os_pages +, mi_option_reserve_huge_os_pages +, mi_option_reserve_huge_os_pages_at +,
    +  mi_option_segment_cache +, mi_option_page_reset +, mi_option_segment_reset +, mi_option_reset_delay +,
    +  mi_option_use_numa_nodes +, mi_option_reset_decommits +, mi_option_eager_commit_delay +, mi_option_os_tag +,
    +  _mi_option_last
    }  Runtime options. More...
    @@ -186,6 +184,8 @@ Functions mi_option_reserve_huge_os_pages 

    The number of huge OS pages (1GiB in size) to reserve at the start of the program.

    +mi_option_reserve_huge_os_pages_at 

    Reserve huge OS pages at node N.

    + mi_option_segment_cache 

    The number of segments per thread to keep cached.

    mi_option_page_reset 

    Reset page memory after mi_option_reset_delay milliseconds when it becomes free.

    @@ -397,9 +397,7 @@ Functions diff --git a/docs/group__options.js b/docs/group__options.js index 9aaf2318..c8836cdc 100644 --- a/docs/group__options.js +++ b/docs/group__options.js @@ -8,6 +8,7 @@ var group__options = [ "mi_option_eager_region_commit", "group__options.html#ggafebf7ed116adb38ae5218bc3ce06884ca32ce97ece29f69e82579679cf8a307ad", null ], [ "mi_option_large_os_pages", "group__options.html#ggafebf7ed116adb38ae5218bc3ce06884ca4192d491200d0055df0554d4cf65054e", null ], [ "mi_option_reserve_huge_os_pages", "group__options.html#ggafebf7ed116adb38ae5218bc3ce06884caca7ed041be3b0b9d0b82432c7bf41af2", null ], + [ "mi_option_reserve_huge_os_pages_at", "group__options.html#ggafebf7ed116adb38ae5218bc3ce06884caa13e7926d4339d2aa6fbf61d4473fd5c", null ], [ "mi_option_segment_cache", "group__options.html#ggafebf7ed116adb38ae5218bc3ce06884ca2ecbe7ef32f5c84de3739aa4f0b805a1", null ], [ "mi_option_page_reset", "group__options.html#ggafebf7ed116adb38ae5218bc3ce06884cada854dd272c66342f18a93ee254a2968", null ], [ "mi_option_segment_reset", "group__options.html#ggafebf7ed116adb38ae5218bc3ce06884cafb121d30d87591850d5410ccc3a95c6d", null ], diff --git a/docs/group__posix.html b/docs/group__posix.html index fe3a88e1..539f7ec6 100644 --- a/docs/group__posix.html +++ b/docs/group__posix.html @@ -3,7 +3,7 @@ - + mi-malloc: Posix @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@
    - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -115,7 +111,7 @@ Functions size_t mi_malloc_usable_size (const void *p)   void mi_cfree (void *p) - Just as free but also checks if the pointer p belongs to our heap. More...
    + Just as free but also checks if the pointer p belongs to our heap. More...
      int mi_posix_memalign (void **p, size_t alignment, size_t size)   @@ -130,7 +126,11 @@ Functions void * mi_aligned_alloc (size_t alignment, size_t size)   void * mi_reallocarray (void *p, size_t count, size_t size) + Correspond s to reallocarray in FreeBSD. More...
      +int mi_reallocarr (void *p, size_t count, size_t size) + Corresponds to reallocarr in NetBSD. More...
    +  void mi_free_size (void *p, size_t size)   void mi_free_size_aligned (void *p, size_t size, size_t alignment) @@ -428,6 +428,42 @@ Functions
    +
    + + +

    ◆ mi_reallocarr()

    + +
    +
    + + + + + + + + + + + + + + + + + + + + + + + + +
    int mi_reallocarr (void * p,
    size_t count,
    size_t size 
    )
    +
    + +

    Corresponds to reallocarr in NetBSD.

    +
    @@ -462,6 +498,8 @@ Functions
    +

    Correspond s to reallocarray in FreeBSD.

    +
    @@ -487,9 +525,7 @@ Functions diff --git a/docs/group__posix.js b/docs/group__posix.js index e43453d9..50c248c8 100644 --- a/docs/group__posix.js +++ b/docs/group__posix.js @@ -11,6 +11,7 @@ var group__posix = [ "mi_memalign", "group__posix.html#gaab7fa71ea93b96873f5d9883db57d40e", null ], [ "mi_posix_memalign", "group__posix.html#gacff84f226ba9feb2031b8992e5579447", null ], [ "mi_pvalloc", "group__posix.html#gaeb325c39b887d3b90d85d1eb1712fb1e", null ], + [ "mi_reallocarr", "group__posix.html#ga7e1934d60a3e697950eeb48e042bfad5", null ], [ "mi_reallocarray", "group__posix.html#ga48fad8648a2f1dab9c87ea9448a52088", null ], [ "mi_valloc", "group__posix.html#ga73baaf5951f5165ba0763d0c06b6a93b", null ] ]; \ No newline at end of file diff --git a/docs/group__typed.html b/docs/group__typed.html index 5cbfbd6b..c19c7f4a 100644 --- a/docs/group__typed.html +++ b/docs/group__typed.html @@ -3,7 +3,7 @@ - + mi-malloc: Typed Macros @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@ - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -111,42 +107,44 @@ $(document).ready(function(){initNavTree('group__typed.html','');});

    Macros

    #define mi_malloc_tp(tp) - Allocate a block of type tp. More...
    + Allocate a block of type tp. More...
      #define mi_zalloc_tp(tp) - Allocate a zero-initialized block of type tp. More...
    + Allocate a zero-initialized block of type tp. More...
      #define mi_calloc_tp(tp, count) - Allocate count zero-initialized blocks of type tp. More...
    + Allocate count zero-initialized blocks of type tp. More...
      #define mi_mallocn_tp(tp, count) - Allocate count blocks of type tp. More...
    + Allocate count blocks of type tp. More...
      #define mi_reallocn_tp(p, tp, count) - Re-allocate to count blocks of type tp. More...
    + Re-allocate to count blocks of type tp. More...
      #define mi_heap_malloc_tp(hp, tp) - Allocate a block of type tp in a heap hp. More...
    + Allocate a block of type tp in a heap hp. More...
      #define mi_heap_zalloc_tp(hp, tp) - Allocate a zero-initialized block of type tp in a heap hp. More...
    + Allocate a zero-initialized block of type tp in a heap hp. More...
      #define mi_heap_calloc_tp(hp, tp, count) - Allocate count zero-initialized blocks of type tp in a heap hp. More...
    + Allocate count zero-initialized blocks of type tp in a heap hp. More...
      #define mi_heap_mallocn_tp(hp, tp, count) - Allocate count blocks of type tp in a heap hp. More...
    + Allocate count blocks of type tp in a heap hp. More...
      #define mi_heap_reallocn_tp(hp, p, tp, count) - Re-allocate to count blocks of type tp in a heap hp. More...
    + Re-allocate to count blocks of type tp in a heap hp. More...
      #define mi_heap_recalloc_tp(hp, p, tp, count) - Re-allocate to count zero initialized blocks of type tp in a heap hp. More...
    + Re-allocate to count zero initialized blocks of type tp in a heap hp. More...
     

    Detailed Description

    Typed allocation macros.

    -

    For example:

    int* p = mi_malloc_tp(int)

    Macro Definition Documentation

    +

    For example:

    int* p = mi_malloc_tp(int)
    +
    mi_malloc_tp
    #define mi_malloc_tp(tp)
    Allocate a block of type tp.
    Definition: mimalloc-doc.h:692
    +

    Macro Definition Documentation

    ◆ mi_calloc_tp

    @@ -417,7 +415,8 @@ Macros
    Returns
    A pointer to an object of type tp, or NULL if out of memory.
    -

    Example:

    int* p = mi_malloc_tp(int)
    See also
    mi_malloc()
    +

    Example:

    int* p = mi_malloc_tp(int)
    +
    See also
    mi_malloc()
    @@ -512,9 +511,7 @@ Macros diff --git a/docs/group__zeroinit.html b/docs/group__zeroinit.html index 3c04a5a6..329a7739 100644 --- a/docs/group__zeroinit.html +++ b/docs/group__zeroinit.html @@ -3,7 +3,7 @@ - + mi-malloc: Zero initialized re-allocation @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@ - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -588,9 +584,7 @@ Functions diff --git a/docs/index.html b/docs/index.html index 01af9bec..2ea91215 100644 --- a/docs/index.html +++ b/docs/index.html @@ -3,7 +3,7 @@ - + mi-malloc: Main Page @@ -13,10 +13,6 @@ - @@ -37,12 +33,12 @@ Logo
    mi-malloc -  1.6 +  1.7/2.0
    - @@ -51,7 +47,7 @@ onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> - +
    @@ -60,10 +56,10 @@
    - + @@ -79,7 +75,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
    @@ -103,13 +99,14 @@ $(document).ready(function(){initNavTree('index.html','');});

    This is the API documentation of the mimalloc allocator (pronounced "me-malloc") – a general purpose allocator with excellent performance characteristics. Initially developed by Daan Leijen for the run-time systems of the Koka and Lean languages.

    -

    It is a drop-in replacement for malloc and can be used in other programs without code changes, for example, on Unix you can use it as:

    > LD_PRELOAD=/usr/bin/libmimalloc.so myprogram

    Notable aspects of the design include:

    +

    It is a drop-in replacement for malloc and can be used in other programs without code changes, for example, on Unix you can use it as:

    > LD_PRELOAD=/usr/bin/libmimalloc.so myprogram
    +

    Notable aspects of the design include:

    • small and consistent: the library is about 8k LOC using simple and consistent data structures. This makes it very suitable to integrate and adapt in other projects. For runtime systems it provides hooks for a monotonic heartbeat and deferred freeing (for bounded worst-case times with reference counting).
    • free list sharding: instead of one big free list (per size class) we have many smaller lists per "mimalloc page" which reduces fragmentation and increases locality – things that are allocated close in time get allocated close in memory. (A mimalloc page contains blocks of one size class and is usually 64KiB on a 64-bit system).
    • free list multi-sharding: the big idea! Not only do we shard the free list per mimalloc page, but for each page we have multiple free lists. In particular, there is one list for thread-local free operations, and another one for concurrent free operations. Free-ing from another thread can now be a single CAS without needing sophisticated coordination between threads. Since there will be thousands of separate free lists, contention is naturally distributed over the heap, and the chance of contending on a single location will be low – this is quite similar to randomized algorithms like skip lists where adding a random oracle removes the need for a more complex algorithm.
    • eager page reset: when a "page" becomes empty (with increased chance due to free list sharding) the memory is marked to the OS as unused ("reset" or "purged") reducing (real) memory pressure and fragmentation, especially in long running programs.
      • -
    • secure: mimalloc can be build in secure mode, adding guard pages, randomized allocation, encrypted free lists, etc. to protect against various heap vulnerabilities. The performance penalty is only around 3% on average over our benchmarks.
      • +
    • secure: mimalloc can be build in secure mode, adding guard pages, randomized allocation, encrypted free lists, etc. to protect against various heap vulnerabilities. The performance penalty is only around 5% on average over our benchmarks.
    • first-class heaps: efficiently create and use multiple heaps to allocate across different regions. A heap can be destroyed at once instead of deallocating each object separately.
    • bounded: it does not suffer from blowup [1], has bounded worst-case allocation times (wcat), bounded space overhead (~0.2% meta-data, with at most 12.5% waste in allocation sizes), and has no internal points of contention using only atomic operations.
    • fast: In our benchmarks (see below), mimalloc outperforms all other leading allocators (jemalloc, tcmalloc, Hoard, etc), and usually uses less memory (up to 25% more in the worst case). A nice property is that it does consistently well over a wide range of benchmarks.
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http://jquery.org/license - * - * http://docs.jquery.com/UI/Mouse - * - * Depends: - * jquery.ui.widget.js - */ -(function(b,c){var a=false;b(document).mouseup(function(d){a=false});b.widget("ui.mouse",{options:{cancel:":input,option",distance:1,delay:0},_mouseInit:function(){var d=this;this.element.bind("mousedown."+this.widgetName,function(e){return d._mouseDown(e)}).bind("click."+this.widgetName,function(e){if(true===b.data(e.target,d.widgetName+".preventClickEvent")){b.removeData(e.target,d.widgetName+".preventClickEvent");e.stopImmediatePropagation();return false}});this.started=false},_mouseDestroy:function(){this.element.unbind("."+this.widgetName)},_mouseDown:function(f){if(a){return}(this._mouseStarted&&this._mouseUp(f));this._mouseDownEvent=f;var e=this,g=(f.which==1),d=(typeof this.options.cancel=="string"&&f.target.nodeName?b(f.target).closest(this.options.cancel).length:false);if(!g||d||!this._mouseCapture(f)){return true}this.mouseDelayMet=!this.options.delay;if(!this.mouseDelayMet){this._mouseDelayTimer=setTimeout(function(){e.mouseDelayMet=true},this.options.delay)}if(this._mouseDistanceMet(f)&&this._mouseDelayMet(f)){this._mouseStarted=(this._mouseStart(f)!==false);if(!this._mouseStarted){f.preventDefault();return true}}if(true===b.data(f.target,this.widgetName+".preventClickEvent")){b.removeData(f.target,this.widgetName+".preventClickEvent")}this._mouseMoveDelegate=function(h){return e._mouseMove(h)};this._mouseUpDelegate=function(h){return e._mouseUp(h)};b(document).bind("mousemove."+this.widgetName,this._mouseMoveDelegate).bind("mouseup."+this.widgetName,this._mouseUpDelegate);f.preventDefault();a=true;return true},_mouseMove:function(d){if(b.browser.msie&&!(document.documentMode>=9)&&!d.button){return this._mouseUp(d)}if(this._mouseStarted){this._mouseDrag(d);return d.preventDefault()}if(this._mouseDistanceMet(d)&&this._mouseDelayMet(d)){this._mouseStarted=(this._mouseStart(this._mouseDownEvent,d)!==false);(this._mouseStarted?this._mouseDrag(d):this._mouseUp(d))}return !this._mouseStarted},_mouseUp:function(d){b(document).unbind("mousemove."+this.widgetName,this._mouseMoveDelegate).unbind("mouseup."+this.widgetName,this._mouseUpDelegate);if(this._mouseStarted){this._mouseStarted=false;if(d.target==this._mouseDownEvent.target){b.data(d.target,this.widgetName+".preventClickEvent",true)}this._mouseStop(d)}return false},_mouseDistanceMet:function(d){return(Math.max(Math.abs(this._mouseDownEvent.pageX-d.pageX),Math.abs(this._mouseDownEvent.pageY-d.pageY))>=this.options.distance)},_mouseDelayMet:function(d){return this.mouseDelayMet},_mouseStart:function(d){},_mouseDrag:function(d){},_mouseStop:function(d){},_mouseCapture:function(d){return true}})})(jQuery);(function(c,d){c.widget("ui.resizable",c.ui.mouse,{widgetEventPrefix:"resize",options:{alsoResize:false,animate:false,animateDuration:"slow",animateEasing:"swing",aspectRatio:false,autoHide:false,containment:false,ghost:false,grid:false,handles:"e,s,se",helper:false,maxHeight:null,maxWidth:null,minHeight:10,minWidth:10,zIndex:1000},_create:function(){var f=this,k=this.options;this.element.addClass("ui-resizable");c.extend(this,{_aspectRatio:!!(k.aspectRatio),aspectRatio:k.aspectRatio,originalElement:this.element,_proportionallyResizeElements:[],_helper:k.helper||k.ghost||k.animate?k.helper||"ui-resizable-helper":null});if(this.element[0].nodeName.match(/canvas|textarea|input|select|button|img/i)){this.element.wrap(c('
      ').css({position:this.element.css("position"),width:this.element.outerWidth(),height:this.element.outerHeight(),top:this.element.css("top"),left:this.element.css("left")}));this.element=this.element.parent().data("resizable",this.element.data("resizable"));this.elementIsWrapper=true;this.element.css({marginLeft:this.originalElement.css("marginLeft"),marginTop:this.originalElement.css("marginTop"),marginRight:this.originalElement.css("marginRight"),marginBottom:this.originalElement.css("marginBottom")});this.originalElement.css({marginLeft:0,marginTop:0,marginRight:0,marginBottom:0});this.originalResizeStyle=this.originalElement.css("resize");this.originalElement.css("resize","none");this._proportionallyResizeElements.push(this.originalElement.css({position:"static",zoom:1,display:"block"}));this.originalElement.css({margin:this.originalElement.css("margin")});this._proportionallyResize()}this.handles=k.handles||(!c(".ui-resizable-handle",this.element).length?"e,s,se":{n:".ui-resizable-n",e:".ui-resizable-e",s:".ui-resizable-s",w:".ui-resizable-w",se:".ui-resizable-se",sw:".ui-resizable-sw",ne:".ui-resizable-ne",nw:".ui-resizable-nw"});if(this.handles.constructor==String){if(this.handles=="all"){this.handles="n,e,s,w,se,sw,ne,nw"}var l=this.handles.split(",");this.handles={};for(var g=0;g
      ');if(/sw|se|ne|nw/.test(j)){h.css({zIndex:++k.zIndex})}if("se"==j){h.addClass("ui-icon ui-icon-gripsmall-diagonal-se")}this.handles[j]=".ui-resizable-"+j;this.element.append(h)}}this._renderAxis=function(q){q=q||this.element;for(var n in this.handles){if(this.handles[n].constructor==String){this.handles[n]=c(this.handles[n],this.element).show()}if(this.elementIsWrapper&&this.originalElement[0].nodeName.match(/textarea|input|select|button/i)){var o=c(this.handles[n],this.element),p=0;p=/sw|ne|nw|se|n|s/.test(n)?o.outerHeight():o.outerWidth();var m=["padding",/ne|nw|n/.test(n)?"Top":/se|sw|s/.test(n)?"Bottom":/^e$/.test(n)?"Right":"Left"].join("");q.css(m,p);this._proportionallyResize()}if(!c(this.handles[n]).length){continue}}};this._renderAxis(this.element);this._handles=c(".ui-resizable-handle",this.element).disableSelection();this._handles.mouseover(function(){if(!f.resizing){if(this.className){var i=this.className.match(/ui-resizable-(se|sw|ne|nw|n|e|s|w)/i)}f.axis=i&&i[1]?i[1]:"se"}});if(k.autoHide){this._handles.hide();c(this.element).addClass("ui-resizable-autohide").hover(function(){if(k.disabled){return}c(this).removeClass("ui-resizable-autohide");f._handles.show()},function(){if(k.disabled){return}if(!f.resizing){c(this).addClass("ui-resizable-autohide");f._handles.hide()}})}this._mouseInit()},destroy:function(){this._mouseDestroy();var e=function(g){c(g).removeClass("ui-resizable ui-resizable-disabled ui-resizable-resizing").removeData("resizable").unbind(".resizable").find(".ui-resizable-handle").remove()};if(this.elementIsWrapper){e(this.element);var f=this.element;f.after(this.originalElement.css({position:f.css("position"),width:f.outerWidth(),height:f.outerHeight(),top:f.css("top"),left:f.css("left")})).remove()}this.originalElement.css("resize",this.originalResizeStyle);e(this.originalElement);return this},_mouseCapture:function(f){var g=false;for(var e in this.handles){if(c(this.handles[e])[0]==f.target){g=true}}return !this.options.disabled&&g},_mouseStart:function(g){var j=this.options,f=this.element.position(),e=this.element;this.resizing=true;this.documentScroll={top:c(document).scrollTop(),left:c(document).scrollLeft()};if(e.is(".ui-draggable")||(/absolute/).test(e.css("position"))){e.css({position:"absolute",top:f.top,left:f.left})}this._renderProxy();var k=b(this.helper.css("left")),h=b(this.helper.css("top"));if(j.containment){k+=c(j.containment).scrollLeft()||0;h+=c(j.containment).scrollTop()||0}this.offset=this.helper.offset();this.position={left:k,top:h};this.size=this._helper?{width:e.outerWidth(),height:e.outerHeight()}:{width:e.width(),height:e.height()};this.originalSize=this._helper?{width:e.outerWidth(),height:e.outerHeight()}:{width:e.width(),height:e.height()};this.originalPosition={left:k,top:h};this.sizeDiff={width:e.outerWidth()-e.width(),height:e.outerHeight()-e.height()};this.originalMousePosition={left:g.pageX,top:g.pageY};this.aspectRatio=(typeof j.aspectRatio=="number")?j.aspectRatio:((this.originalSize.width/this.originalSize.height)||1);var i=c(".ui-resizable-"+this.axis).css("cursor");c("body").css("cursor",i=="auto"?this.axis+"-resize":i);e.addClass("ui-resizable-resizing");this._propagate("start",g);return true},_mouseDrag:function(e){var h=this.helper,g=this.options,m={},q=this,j=this.originalMousePosition,n=this.axis;var r=(e.pageX-j.left)||0,p=(e.pageY-j.top)||0;var i=this._change[n];if(!i){return false}var l=i.apply(this,[e,r,p]),k=c.browser.msie&&c.browser.version<7,f=this.sizeDiff;this._updateVirtualBoundaries(e.shiftKey);if(this._aspectRatio||e.shiftKey){l=this._updateRatio(l,e)}l=this._respectSize(l,e);this._propagate("resize",e);h.css({top:this.position.top+"px",left:this.position.left+"px",width:this.size.width+"px",height:this.size.height+"px"});if(!this._helper&&this._proportionallyResizeElements.length){this._proportionallyResize()}this._updateCache(l);this._trigger("resize",e,this.ui());return false},_mouseStop:function(h){this.resizing=false;var i=this.options,m=this;if(this._helper){var g=this._proportionallyResizeElements,e=g.length&&(/textarea/i).test(g[0].nodeName),f=e&&c.ui.hasScroll(g[0],"left")?0:m.sizeDiff.height,k=e?0:m.sizeDiff.width;var n={width:(m.helper.width()-k),height:(m.helper.height()-f)},j=(parseInt(m.element.css("left"),10)+(m.position.left-m.originalPosition.left))||null,l=(parseInt(m.element.css("top"),10)+(m.position.top-m.originalPosition.top))||null;if(!i.animate){this.element.css(c.extend(n,{top:l,left:j}))}m.helper.height(m.size.height);m.helper.width(m.size.width);if(this._helper&&!i.animate){this._proportionallyResize()}}c("body").css("cursor","auto");this.element.removeClass("ui-resizable-resizing");this._propagate("stop",h);if(this._helper){this.helper.remove()}return false},_updateVirtualBoundaries:function(g){var j=this.options,i,h,f,k,e;e={minWidth:a(j.minWidth)?j.minWidth:0,maxWidth:a(j.maxWidth)?j.maxWidth:Infinity,minHeight:a(j.minHeight)?j.minHeight:0,maxHeight:a(j.maxHeight)?j.maxHeight:Infinity};if(this._aspectRatio||g){i=e.minHeight*this.aspectRatio;f=e.minWidth/this.aspectRatio;h=e.maxHeight*this.aspectRatio;k=e.maxWidth/this.aspectRatio;if(i>e.minWidth){e.minWidth=i}if(f>e.minHeight){e.minHeight=f}if(hl.width),s=a(l.height)&&i.minHeight&&(i.minHeight>l.height);if(h){l.width=i.minWidth}if(s){l.height=i.minHeight}if(t){l.width=i.maxWidth}if(m){l.height=i.maxHeight}var f=this.originalPosition.left+this.originalSize.width,p=this.position.top+this.size.height;var k=/sw|nw|w/.test(q),e=/nw|ne|n/.test(q);if(h&&k){l.left=f-i.minWidth}if(t&&k){l.left=f-i.maxWidth}if(s&&e){l.top=p-i.minHeight}if(m&&e){l.top=p-i.maxHeight}var n=!l.width&&!l.height;if(n&&!l.left&&l.top){l.top=null}else{if(n&&!l.top&&l.left){l.left=null}}return l},_proportionallyResize:function(){var k=this.options;if(!this._proportionallyResizeElements.length){return}var g=this.helper||this.element;for(var f=0;f');var e=c.browser.msie&&c.browser.version<7,g=(e?1:0),h=(e?2:-1);this.helper.addClass(this._helper).css({width:this.element.outerWidth()+h,height:this.element.outerHeight()+h,position:"absolute",left:this.elementOffset.left-g+"px",top:this.elementOffset.top-g+"px",zIndex:++i.zIndex});this.helper.appendTo("body").disableSelection()}else{this.helper=this.element}},_change:{e:function(g,f,e){return{width:this.originalSize.width+f}},w:function(h,f,e){var j=this.options,g=this.originalSize,i=this.originalPosition;return{left:i.left+f,width:g.width-f}},n:function(h,f,e){var j=this.options,g=this.originalSize,i=this.originalPosition;return{top:i.top+e,height:g.height-e}},s:function(g,f,e){return{height:this.originalSize.height+e}},se:function(g,f,e){return c.extend(this._change.s.apply(this,arguments),this._change.e.apply(this,[g,f,e]))},sw:function(g,f,e){return c.extend(this._change.s.apply(this,arguments),this._change.w.apply(this,[g,f,e]))},ne:function(g,f,e){return c.extend(this._change.n.apply(this,arguments),this._change.e.apply(this,[g,f,e]))},nw:function(g,f,e){return c.extend(this._change.n.apply(this,arguments),this._change.w.apply(this,[g,f,e]))}},_propagate:function(f,e){c.ui.plugin.call(this,f,[e,this.ui()]);(f!="resize"&&this._trigger(f,e,this.ui()))},plugins:{},ui:function(){return{originalElement:this.originalElement,element:this.element,helper:this.helper,position:this.position,size:this.size,originalSize:this.originalSize,originalPosition:this.originalPosition}}});c.extend(c.ui.resizable,{version:"1.8.18"});c.ui.plugin.add("resizable","alsoResize",{start:function(f,g){var e=c(this).data("resizable"),i=e.options;var h=function(j){c(j).each(function(){var k=c(this);k.data("resizable-alsoresize",{width:parseInt(k.width(),10),height:parseInt(k.height(),10),left:parseInt(k.css("left"),10),top:parseInt(k.css("top"),10)})})};if(typeof(i.alsoResize)=="object"&&!i.alsoResize.parentNode){if(i.alsoResize.length){i.alsoResize=i.alsoResize[0];h(i.alsoResize)}else{c.each(i.alsoResize,function(j){h(j)})}}else{h(i.alsoResize)}},resize:function(g,i){var f=c(this).data("resizable"),j=f.options,h=f.originalSize,l=f.originalPosition;var k={height:(f.size.height-h.height)||0,width:(f.size.width-h.width)||0,top:(f.position.top-l.top)||0,left:(f.position.left-l.left)||0},e=function(m,n){c(m).each(function(){var q=c(this),r=c(this).data("resizable-alsoresize"),p={},o=n&&n.length?n:q.parents(i.originalElement[0]).length?["width","height"]:["width","height","top","left"];c.each(o,function(s,u){var t=(r[u]||0)+(k[u]||0);if(t&&t>=0){p[u]=t||null}});q.css(p)})};if(typeof(j.alsoResize)=="object"&&!j.alsoResize.nodeType){c.each(j.alsoResize,function(m,n){e(m,n)})}else{e(j.alsoResize)}},stop:function(e,f){c(this).removeData("resizable-alsoresize")}});c.ui.plugin.add("resizable","animate",{stop:function(i,n){var p=c(this).data("resizable"),j=p.options;var h=p._proportionallyResizeElements,e=h.length&&(/textarea/i).test(h[0].nodeName),f=e&&c.ui.hasScroll(h[0],"left")?0:p.sizeDiff.height,l=e?0:p.sizeDiff.width;var g={width:(p.size.width-l),height:(p.size.height-f)},k=(parseInt(p.element.css("left"),10)+(p.position.left-p.originalPosition.left))||null,m=(parseInt(p.element.css("top"),10)+(p.position.top-p.originalPosition.top))||null;p.element.animate(c.extend(g,m&&k?{top:m,left:k}:{}),{duration:j.animateDuration,easing:j.animateEasing,step:function(){var o={width:parseInt(p.element.css("width"),10),height:parseInt(p.element.css("height"),10),top:parseInt(p.element.css("top"),10),left:parseInt(p.element.css("left"),10)};if(h&&h.length){c(h[0]).css({width:o.width,height:o.height})}p._updateCache(o);p._propagate("resize",i)}})}});c.ui.plugin.add("resizable","containment",{start:function(f,r){var t=c(this).data("resizable"),j=t.options,l=t.element;var g=j.containment,k=(g instanceof c)?g.get(0):(/parent/.test(g))?l.parent().get(0):g;if(!k){return}t.containerElement=c(k);if(/document/.test(g)||g==document){t.containerOffset={left:0,top:0};t.containerPosition={left:0,top:0};t.parentData={element:c(document),left:0,top:0,width:c(document).width(),height:c(document).height()||document.body.parentNode.scrollHeight}}else{var n=c(k),i=[];c(["Top","Right","Left","Bottom"]).each(function(p,o){i[p]=b(n.css("padding"+o))});t.containerOffset=n.offset();t.containerPosition=n.position();t.containerSize={height:(n.innerHeight()-i[3]),width:(n.innerWidth()-i[1])};var q=t.containerOffset,e=t.containerSize.height,m=t.containerSize.width,h=(c.ui.hasScroll(k,"left")?k.scrollWidth:m),s=(c.ui.hasScroll(k)?k.scrollHeight:e);t.parentData={element:k,left:q.left,top:q.top,width:h,height:s}}},resize:function(g,q){var 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