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merge from dev3

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daanx 2025-02-08 13:14:19 -08:00
commit 8d9b6b2b9e
8 changed files with 110 additions and 78 deletions
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8
include/mimalloc/bits.h
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@ -199,6 +199,8 @@ static inline size_t mi_ctz(size_t x) {
size_t r;
__asm ("tzcnt\t%1, %0" : "=r"(r) : "r"(x) : "cc");
return r;
#elif defined(_MSC_VER) && MI_ARCH_X64 && defined(__BMI1__)
return _tzcnt_u64(x);
#elif defined(_MSC_VER) && (MI_ARCH_X64 || MI_ARCH_X86 || MI_ARCH_ARM64 || MI_ARCH_ARM32)
unsigned long idx;
return (mi_msc_builtinz(_BitScanForward)(&idx, x) ? (size_t)idx : MI_SIZE_BITS);
@ -221,6 +223,8 @@ static inline size_t mi_clz(size_t x) {
size_t r;
__asm ("lzcnt\t%1, %0" : "=r"(r) : "r"(x) : "cc");
return r;
#elif defined(_MSC_VER) && MI_ARCH_X64 && defined(__BMI1__)
return _lzcnt_u64(x);
#elif defined(_MSC_VER) && (MI_ARCH_X64 || MI_ARCH_X86 || MI_ARCH_ARM64 || MI_ARCH_ARM32)
unsigned long idx;
return (mi_msc_builtinz(_BitScanReverse)(&idx, x) ? MI_SIZE_BITS - 1 - (size_t)idx : MI_SIZE_BITS);
@ -254,7 +258,7 @@ static inline bool mi_bsf(size_t x, size_t* idx) {
bool is_zero;
__asm ( "tzcnt\t%2, %1" : "=@ccc"(is_zero), "=r"(*idx) : "r"(x) : "cc" );
return !is_zero;
#elif defined(_MSC_VER) && (MI_ARCH_X64 || MI_ARCH_X86 || MI_ARCH_ARM64 || MI_ARCH_ARM32)
#elif 0 && defined(_MSC_VER) && (MI_ARCH_X64 || MI_ARCH_X86 || MI_ARCH_ARM64 || MI_ARCH_ARM32)
unsigned long i;
return (mi_msc_builtinz(_BitScanForward)(&i, x) ? (*idx = (size_t)i, true) : false);
#else
@ -271,7 +275,7 @@ static inline bool mi_bsr(size_t x, size_t* idx) {
bool is_zero;
__asm ("lzcnt\t%2, %1" : "=@ccc"(is_zero), "=r"(*idx) : "r"(x) : "cc");
return !is_zero;
#elif defined(_MSC_VER) && (MI_ARCH_X64 || MI_ARCH_X86 || MI_ARCH_ARM64 || MI_ARCH_ARM32)
#elif 0 && defined(_MSC_VER) && (MI_ARCH_X64 || MI_ARCH_X86 || MI_ARCH_ARM64 || MI_ARCH_ARM32)
unsigned long i;
return (mi_msc_builtinz(_BitScanReverse)(&i, x) ? (*idx = (size_t)i, true) : false);
#else

4
include/mimalloc/types.h
View file

@ -99,7 +99,7 @@ terms of the MIT license. A copy of the license can be found in the file
#define MI_ENCODE_FREELIST 1
#endif
// Enable large pages for objects between 64KiB and 256KiB.
// Enable large pages for objects between 64KiB and 512KiB.
// Disabled by default as for many workloads the block sizes above 64 KiB are quite random which can lead to too many partially used large pages.
#ifndef MI_ENABLE_LARGE_PAGES
#define MI_ENABLE_LARGE_PAGES 0
@ -342,7 +342,7 @@ typedef struct mi_page_s {
#define MI_SMALL_MAX_OBJ_SIZE ((MI_SMALL_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4) // < 16 KiB
#if MI_ENABLE_LARGE_PAGES
#define MI_MEDIUM_MAX_OBJ_SIZE ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4) // < 128 KiB
#define MI_LARGE_MAX_OBJ_SIZE (MI_LARGE_PAGE_SIZE/8) // <= 256 KiB // note: this must be a nice power of 2 or we get rounding issues with `_mi_bin`
#define MI_LARGE_MAX_OBJ_SIZE (MI_LARGE_PAGE_SIZE/8) // <= 512KiB // note: this must be a nice power of 2 or we get rounding issues with `_mi_bin`
#else
#define MI_MEDIUM_MAX_OBJ_SIZE (MI_MEDIUM_PAGE_SIZE/4) // <= 128 KiB
#define MI_LARGE_MAX_OBJ_SIZE MI_MEDIUM_MAX_OBJ_SIZE // note: this must be a nice power of 2 or we get rounding issues with `_mi_bin`