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fix alignment issue on Alpine 32-bit musl compilation (issue #895)

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This commit is contained in:
Daan 2024-05-17 09:06:27 -07:00
parent 97013ee2b4
commit 8fd1184272
1 changed files with 5 additions and 10 deletions
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15
src/arena.c
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@ -141,8 +141,8 @@ static bool mi_arena_memid_indices(mi_memid_t memid, size_t* arena_index, mi_bit
#define MI_ARENA_STATIC_MAX (MI_INTPTR_SIZE*MI_KiB) // 8 KiB on 64-bit
static uint8_t mi_arena_static[MI_ARENA_STATIC_MAX];
static _Atomic(size_t) mi_arena_static_top;
static mi_decl_cache_align uint8_t mi_arena_static[MI_ARENA_STATIC_MAX]; // must be cache aligned, see issue #895
static mi_decl_cache_align _Atomic(size_t) mi_arena_static_top;
static void* mi_arena_static_zalloc(size_t size, size_t alignment, mi_memid_t* memid) {
*memid = _mi_memid_none();
@ -151,7 +151,7 @@ static void* mi_arena_static_zalloc(size_t size, size_t alignment, mi_memid_t* m
if ((toplow + size) > MI_ARENA_STATIC_MAX) return NULL;
// try to claim space
if (alignment == 0) { alignment = 1; }
if (alignment < MI_MAX_ALIGN_SIZE) { alignment = MI_MAX_ALIGN_SIZE; }
const size_t oversize = size + alignment - 1;
if (toplow + oversize > MI_ARENA_STATIC_MAX) return NULL;
const size_t oldtop = mi_atomic_add_acq_rel(&mi_arena_static_top, oversize);
@ -167,7 +167,7 @@ static void* mi_arena_static_zalloc(size_t size, size_t alignment, mi_memid_t* m
memid->initially_zero = true;
const size_t start = _mi_align_up(oldtop, alignment);
uint8_t* const p = &mi_arena_static[start];
_mi_memzero(p, size);
_mi_memzero_aligned(p, size);
return p;
}
@ -175,12 +175,7 @@ static void* mi_arena_meta_zalloc(size_t size, mi_memid_t* memid, mi_stats_t* st
*memid = _mi_memid_none();
// try static
void* p = NULL;
#if (MI_INTPTR_SIZE==4 && MI_LIBC_MUSL) // fix 32-bit musl compilation, issue #895
MI_UNUSED(mi_arena_static_zalloc);
#else
p = mi_arena_static_zalloc(size, MI_MAX_ALIGN_SIZE, memid);
#endif
void* p = mi_arena_static_zalloc(size, MI_MAX_ALIGN_SIZE, memid);
if (p != NULL) return p;
// or fall back to the OS