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add zeroing to new region from realloc

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CiD-
2021-12-17 10:41:49 -05:00
parent 0548db4230
commit 29ca6ee420
1 changed files with 11 additions and 2 deletions
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core/os/os.odin
+11 -2
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@@ -206,11 +206,20 @@ heap_allocator_proc :: proc(allocator_data: rawptr, mode: mem.Allocator_Mode,
} }
} }
aligned_resize :: proc(p: rawptr, old_size: int, new_size: int, new_alignment: int) -> ([]byte, mem.Allocator_Error) { aligned_resize :: proc(p: rawptr, old_size: int, new_size: int, new_alignment: int) -> (new_memory: []byte, err: mem.Allocator_Error) {
if p == nil { if p == nil {
return nil, nil return nil, nil
} }
return aligned_alloc(new_size, new_alignment, p)
new_memory = aligned_alloc(new_size, new_alignment, p) or_return
when ODIN_OS != "windows" {
// NOTE: realloc does not zero the new memory, so we do it
if new_size > old_size {
new_region := mem.raw_data(new_memory[old_size:])
mem.zero(new_region, new_size - old_size)
}
}
return
} }
switch mode { switch mode {