IABSD.fr/xenocara/lib/mesa/src/vulkan/util/vk_alloc.c

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• Author : jsg
  Date : 2023-01-28 08:09:28
  Hash : 5642995e
  Message : Import Mesa 22.3.4

• lib/mesa/src/vulkan/util/vk_alloc.c

• /*
   * Copyright 2021 Google LLC
   * SPDX-License-Identifier: MIT
   */
  
  #include "vk_alloc.h"
  
  #include <stdlib.h>
  
  #ifndef _MSC_VER
  #include <stddef.h>
  #define MAX_ALIGN alignof(max_align_t)
  #else
  /* long double might be 128-bit, but our callers do not need that anyway(?) */
  #include <stdint.h>
  #define MAX_ALIGN alignof(uint64_t)
  #endif
  
  static VKAPI_ATTR void * VKAPI_CALL
  vk_default_alloc(void *pUserData,
                   size_t size,
                   size_t alignment,
                   VkSystemAllocationScope allocationScope)
  {
     assert(MAX_ALIGN % alignment == 0);
     return malloc(size);
  }
  
  static VKAPI_ATTR void * VKAPI_CALL
  vk_default_realloc(void *pUserData,
                     void *pOriginal,
                     size_t size,
                     size_t alignment,
                     VkSystemAllocationScope allocationScope)
  {
     assert(MAX_ALIGN % alignment == 0);
     return realloc(pOriginal, size);
  }
  
  static VKAPI_ATTR void VKAPI_CALL
  vk_default_free(void *pUserData, void *pMemory)
  {
     free(pMemory);
  }
  
  const VkAllocationCallbacks *
  vk_default_allocator(void)
  {
     static const VkAllocationCallbacks allocator = {
        .pfnAllocation = vk_default_alloc,
        .pfnReallocation = vk_default_realloc,
        .pfnFree = vk_default_free,
     };
     return &allocator;
  }