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merge from dev-slice

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daan 2022-01-10 16:24:58 -08:00
commit 5b0a07d6b6
6 changed files with 17 additions and 19 deletions
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2
include/mimalloc-internal.h
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@ -89,7 +89,7 @@ bool _mi_os_unprotect(void* addr, size_t size);
bool _mi_os_commit(void* addr, size_t size, bool* is_zero, mi_stats_t* stats);
bool _mi_os_decommit(void* p, size_t size, mi_stats_t* stats);
bool _mi_os_reset(void* p, size_t size, mi_stats_t* stats);
bool _mi_os_unreset(void* p, size_t size, bool* is_zero, mi_stats_t* stats);
// bool _mi_os_unreset(void* p, size_t size, bool* is_zero, mi_stats_t* stats);
size_t _mi_os_good_alloc_size(size_t size);
bool _mi_os_has_overcommit(void);

12
include/mimalloc-types.h
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@ -178,21 +178,21 @@ typedef int32_t mi_ssize_t;
// Maximum number of size classes. (spaced exponentially in 12.5% increments)
#define MI_BIN_HUGE (73U)
#if (MI_LARGE_OBJ_WSIZE_MAX >= 655360)
#if (MI_MEDIUM_OBJ_WSIZE_MAX >= 655360)
#error "mimalloc internal: define more bins"
#endif
#if (MI_ALIGNMENT_MAX > MI_SEGMENT_SIZE/2)
#error "mimalloc internal: the max aligned boundary is too large for the segment size"
#if (MI_ALIGNED_MAX % MI_SEGMENT_SLICE_SIZE != 0)
#error "mimalloc internal: the max aligned boundary must be an integral multiple of the segment slice size"
#endif
// Maximum slice offset (7)
#define MI_MAX_SLICE_OFFSET ((MI_MEDIUM_PAGE_SIZE / MI_SEGMENT_SLICE_SIZE) - 1)
// Maximum slice offset (15)
#define MI_MAX_SLICE_OFFSET ((MI_ALIGNMENT_MAX / MI_SEGMENT_SLICE_SIZE) - 1)
// Used as a special value to encode block sizes in 32 bits.
#define MI_HUGE_BLOCK_SIZE ((uint32_t)MI_HUGE_OBJ_SIZE_MAX)
// blocks up to this size are always allocated aligned
#define MI_MAX_ALIGN_GUARANTEE (8*MI_MAX_ALIGN_SIZE)
#define MI_MAX_ALIGN_GUARANTEE (8*MI_MAX_ALIGN_SIZE)

3
src/alloc-override-osx.c
View file

@ -32,8 +32,7 @@ terms of the MIT license. A copy of the license can be found in the file
extern "C" {
#endif
#if defined(MAC_OS_X_VERSION_10_6) && \
MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
#if defined(MAC_OS_X_VERSION_10_6) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6)
// only available from OSX 10.6
extern malloc_zone_t* malloc_default_purgeable_zone(void) __attribute__((weak_import));
#endif

2
src/options.c
View file

@ -72,7 +72,7 @@ static mi_option_desc_t options[_mi_option_last] =
{ 0, UNINIT, MI_OPTION(reset_decommits) }, // reset decommits memory
#else
{ 1, UNINIT, MI_OPTION(eager_region_commit) },
{ 0, UNINIT, MI_OPTION(reset_decommits) }, // reset uses MADV_FREE/MADV_DONTNEED
{ 0, UNINIT, MI_OPTION(reset_decommits) }, // legacy; ignored now and reset always uses MADV_FREE/MADV_DONTNEED (issue #518)
#endif
{ 0, UNINIT, MI_OPTION(large_os_pages) }, // use large OS pages, use only with eager commit to prevent fragmentation of VMA's
{ 0, UNINIT, MI_OPTION(reserve_huge_os_pages) }, // per 1GiB huge pages

15
src/os.c
View file

@ -952,9 +952,12 @@ bool _mi_os_decommit(void* addr, size_t size, mi_stats_t* tld_stats) {
return mi_os_commitx(addr, size, false, true /* conservative */, &is_zero, stats);
}
/*
static bool mi_os_commit_unreset(void* addr, size_t size, bool* is_zero, mi_stats_t* stats) {
return mi_os_commitx(addr, size, true, true /* conservative */, is_zero, stats);
return mi_os_commitx(addr, size, true, true // conservative
, is_zero, stats);
}
*/
// Signal to the OS that the address range is no longer in use
// but may be used later again. This will release physical memory
@ -1017,14 +1020,10 @@ static bool mi_os_resetx(void* addr, size_t size, bool reset, mi_stats_t* stats)
bool _mi_os_reset(void* addr, size_t size, mi_stats_t* tld_stats) {
MI_UNUSED(tld_stats);
mi_stats_t* stats = &_mi_stats_main;
if (mi_option_is_enabled(mi_option_reset_decommits)) {
return _mi_os_decommit(addr, size, stats);
}
else {
return mi_os_resetx(addr, size, true, stats);
}
return mi_os_resetx(addr, size, true, stats);
}
/*
bool _mi_os_unreset(void* addr, size_t size, bool* is_zero, mi_stats_t* tld_stats) {
MI_UNUSED(tld_stats);
mi_stats_t* stats = &_mi_stats_main;
@ -1036,7 +1035,7 @@ bool _mi_os_unreset(void* addr, size_t size, bool* is_zero, mi_stats_t* tld_stat
return mi_os_resetx(addr, size, false, stats);
}
}
*/
// Protect a region in memory to be not accessible.
static bool mi_os_protectx(void* addr, size_t size, bool protect) {

2
src/segment.c
View file

@ -317,7 +317,7 @@ static uint8_t* _mi_segment_page_start_from_slice(const mi_segment_t* segment, c
size_t psize = (size_t)slice->slice_count * MI_SEGMENT_SLICE_SIZE;
// make the start not OS page aligned for smaller blocks to avoid page/cache effects
size_t start_offset = (xblock_size >= MI_INTPTR_SIZE && xblock_size <= 1024 ? MI_MAX_ALIGN_GUARANTEE : 0);
if (page_size != NULL) *page_size = psize - start_offset;
if (page_size != NULL) { *page_size = psize - start_offset; }
return (uint8_t*)segment + ((idx*MI_SEGMENT_SLICE_SIZE) + start_offset);
}