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memory fixes

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This commit is contained in:
Edward R. Gonzalez
2025-02-10 12:00:39 -05:00
parent a54d309fbf
commit 632bc6d47f
9 changed files with 82 additions and 59 deletions
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code/base/memory_substrate.c
+11 -18
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@@ -249,8 +249,9 @@ varena__alloc(VArenaParams params)
reserve_size = align_pow2(reserve_size, os_get_system_info()->page_size);
commit_size = align_pow2(commit_size, os_get_system_info()->page_size);
base = os_reserve(reserve_size);
os_commit(base, commit_size);
base = os_reserve(reserve_size);
B32 commit_result = os_commit(base, commit_size);
assert(commit_result == 1);
asan_poison_memory_region(base, params.commit_size);
}
@@ -302,7 +303,8 @@ varena_allocator_proc(void* allocator_data, AllocatorMode mode, SSIZE requested_
UPTR current_offset = vm->reserve_start + vm->commit_used;
UPTR size_to_allocate = requested_size;
UPTR to_be_used = vm->commit_used + size_to_allocate;
assert(to_be_used < vm->reserve);
SPTR reserve_left = vm->reserve - vm->committed;
assert(to_be_used < reserve_left);
UPTR header_offset = vm->reserve_start - scast(UPTR, vm);
@@ -310,19 +312,20 @@ varena_allocator_proc(void* allocator_data, AllocatorMode mode, SSIZE requested_
B32 needs_more_commited = commit_left < size_to_allocate;
if (needs_more_commited)
{
SPTR reserve_left = vm->reserve - vm->committed;
UPTR next_commit_size;
if (vm->flags & VArenaFlag_LargePages) {
next_commit_size = reserve_left > 0 ? md_max(vm->commit_size, size_to_allocate) : scast(UPTR, align_pow2( -reserve_left, os_get_system_info()->large_page_size));
next_commit_size = reserve_left > 0 ? md_max(vm->commit_size, size_to_allocate) : scast(UPTR, align_pow2( abs(reserve_left), os_get_system_info()->large_page_size));
}
else {
next_commit_size = reserve_left > 0 ? md_max(vm->commit_size, size_to_allocate) : scast(UPTR, align_pow2(abs(reserve_left), os_get_system_info()->page_size));
}
if (next_commit_size) {
B32 commit_result = os_commit(vm, next_commit_size);
void* next_commit_start = rcast(void*, rcast(UPTR, vm) + vm->committed);
B32 commit_result = os_commit(next_commit_start, next_commit_size);
if (commit_result == false) {
break;
}
vm->committed += next_commit_size;
}
}
@@ -391,11 +394,6 @@ varena_allocator_proc(void* allocator_data, AllocatorMode mode, SSIZE requested_
}
break;
// case AllocatorMode_Pop:
// break;
// case AllocatorMode_Pop_To:
// break;
case AllocatorMode_QueryType:
{
return (void*) AllocatorType_VArena;
@@ -474,18 +472,13 @@ farena_allocator_proc(void* allocator_data, AllocatorMode mode, SSIZE size, SSIZ
}
break;
// case AllocatorMode_Pop:
// break;
// case AllocatorMode_Pop_To:
// break;
case AllocatorMode_QueryType:
return (void*) AllocatorType_FArena;
break;
case AllocatorMode_QuerySupport:
return (void*) (AllocatorQuery_Alloc | AllocatorQuery_FreeAll | AllocatorQuery_Resize
// | AllocatorQuery_Pop | AllocatorQuery_Pop_To
return (void*) (
AllocatorQuery_Alloc | AllocatorQuery_FreeAll | AllocatorQuery_Resize | AllocatorQuery_ResizeGrow | AllocatorQuery_ResizeShrink
);
break;
}