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d3acc73455
We cannot use os_{malloc,free,realloc}_aligned because
os_realloc_aligned needs the old size (for memcpy).
v2: no max_align_t on MSVC
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11117>
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
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* Copyright 2021 Google LLC
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* SPDX-License-Identifier: MIT
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*/
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#include "vk_alloc.h"
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#include <stdlib.h>
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#if __STDC_VERSION__ >= 201112L && !defined(_MSC_VER)
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#include <stddef.h>
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#define MAX_ALIGN alignof(max_align_t)
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#else
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/* long double might be 128-bit, but our callers do not need that anyway(?) */
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#include <stdint.h>
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#define MAX_ALIGN alignof(uint64_t)
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#endif
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static VKAPI_ATTR void * VKAPI_CALL
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vk_default_alloc(void *pUserData,
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size_t size,
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size_t alignment,
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VkSystemAllocationScope allocationScope)
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{
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assert(MAX_ALIGN % alignment == 0);
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return malloc(size);
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}
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static VKAPI_ATTR void * VKAPI_CALL
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vk_default_realloc(void *pUserData,
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void *pOriginal,
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size_t size,
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size_t alignment,
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VkSystemAllocationScope allocationScope)
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{
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assert(MAX_ALIGN % alignment == 0);
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return realloc(pOriginal, size);
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}
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static VKAPI_ATTR void VKAPI_CALL
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vk_default_free(void *pUserData, void *pMemory)
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{
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free(pMemory);
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}
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const VkAllocationCallbacks *
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vk_default_allocator(void)
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{
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static const VkAllocationCallbacks allocator = {
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.pfnAllocation = vk_default_alloc,
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.pfnReallocation = vk_default_realloc,
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.pfnFree = vk_default_free,
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};
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return &allocator;
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}
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