AuroraMiddleware/mimalloc
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Merge branch 'dev' into dev-win

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This commit is contained in:
daan 2019-08-23 21:42:32 -07:00
commit d3224d0bba
2 changed files with 13 additions and 1 deletions
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2
include/mimalloc.h
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@ -53,8 +53,8 @@ terms of the MIT license. A copy of the license can be found in the file
#else
#define mi_attr_alloc_size(s) __attribute__((alloc_size(s)))
#define mi_attr_alloc_size2(s1,s2) __attribute__((alloc_size(s1,s2)))
#define mi_cdecl // leads to warnings... __attribute__((cdecl))
#endif
#define mi_cdecl // leads to warnings... __attribute__((cdecl))
#else
#define mi_decl_thread __thread
#define mi_decl_export

12
src/os.c
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@ -196,6 +196,18 @@ static bool mi_os_mem_free(void* addr, size_t size, mi_stats_t* stats)
#ifdef _WIN32
static void* mi_win_virtual_allocx(void* addr, size_t size, size_t try_alignment, DWORD flags) {
#if (MI_INTPTR_SIZE >= 8)
// on 64-bit systems, use the virtual address area after 4TiB for 4MiB aligned allocations
static volatile intptr_t aligned_base = ((intptr_t)4 << 40); // starting at 4TiB
if (addr == NULL && try_alignment > 0 &&
try_alignment <= MI_SEGMENT_SIZE && (size%MI_SEGMENT_SIZE) == 0)
{
intptr_t hint = mi_atomic_add(&aligned_base, size) - size;
if (hint%try_alignment == 0) {
return VirtualAlloc((void*)hint, size, flags, PAGE_READWRITE);
}
}
#endif
#if defined(MEM_EXTENDED_PARAMETER_TYPE_BITS)
// on modern Windows try use NtAllocateVirtualMemoryEx for 1GiB huge pages
if ((size % (uintptr_t)1 << 30) == 0 /* 1GiB multiple */