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tighter allocation for arena allocator

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This commit is contained in:
Ian Lilley
2022-06-01 21:37:05 -04:00
parent ba5f7c4e2a
commit 66de1856e3
1 changed files with 5 additions and 4 deletions
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core/mem/allocators.odin
+5 -4
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@@ -52,15 +52,16 @@ arena_allocator_proc :: proc(allocator_data: rawptr, mode: Allocator_Mode,
switch mode {
case .Alloc:
total_size := size + alignment
#no_bounds_check end := &arena.data[arena.offset]
ptr := align_forward(end, uintptr(alignment))
total_size := size + ptr_sub((^byte)(ptr), (^byte)(end))
if arena.offset + total_size > len(arena.data) {
return nil, .Out_Of_Memory
}
#no_bounds_check end := &arena.data[arena.offset]
ptr := align_forward(end, uintptr(alignment))
arena.offset += total_size
arena.peak_used = max(arena.peak_used, arena.offset)
zero(ptr, size)