kiper220/mimalloc
1
0
Fork 0
mirror of https://github.com/microsoft/mimalloc.git synced 2025-05-10 17:29:31 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

ensure webassembly allocation sizes are page aligned

Browse source
This commit is contained in:
daan 2019-08-11 08:06:17 -07:00
parent a1384bff72
commit f5902a7a82
1 changed files with 6 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
src/os.c
View file

@ -225,16 +225,16 @@ static void* mi_win_virtual_alloc(void* addr, size_t size, size_t try_alignment,
#elif defined(__wasi__)
static void* mi_wasm_heap_grow(size_t size, size_t try_alignment) {
uintptr_t base = __builtin_wasm_memory_size(0) * os_page_size;
uintptr_t base = __builtin_wasm_memory_size(0) * _mi_os_page_size();
uintptr_t aligned_base = _mi_align_up(base, (uintptr_t) try_alignment);
size_t alloc_size = aligned_base - base + size;
mi_assert(alloc_size >= size);
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 / os_page_size) == SIZE_MAX) {
if (__builtin_wasm_memory_grow(0, alloc_size / _mi_os_page_size()) == SIZE_MAX) {
errno = ENOMEM;
return NULL;
}
return (void*) aligned_base;
return (void*)aligned_base;
}
#else
static void* mi_unix_mmapx(size_t size, size_t try_alignment, int protect_flags, int flags, int fd) {
@ -321,7 +321,7 @@ static void* mi_os_mem_alloc(size_t size, size_t try_alignment, bool commit, mi_
if (commit) flags |= MEM_COMMIT;
p = mi_win_virtual_alloc(NULL, size, try_alignment, flags);
#elif defined(__wasi__)
p = mi_wasm_herap_grow(size, try_alignment);
p = mi_wasm_heap_grow(size, try_alignment);
#else
int protect_flags = (commit ? (PROT_WRITE | PROT_READ) : PROT_NONE);
p = mi_unix_mmap(size, try_alignment, protect_flags);