src/vulkan/util/vk_alloc.h

   1 /*
   2  * Copyright © 2015 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23 #ifndef VK_ALLOC_H
  24 #define VK_ALLOC_H
  25
  26 /* common allocation inlines for vulkan drivers */
  27
  28 #include <string.h>
  29 #include <vulkan/vulkan.h>
  30
  31 static inline void *
  32 vk_alloc(const VkAllocationCallbacks *alloc,
  33          size_t size, size_t align,
  34          VkSystemAllocationScope scope)
  35 {
  36    return alloc->pfnAllocation(alloc->pUserData, size, align, scope);
  37 }
  38
  39 static inline void *
  40 vk_zalloc(const VkAllocationCallbacks *alloc,
  41           size_t size, size_t align,
  42           VkSystemAllocationScope scope)
  43 {
  44    void *mem = vk_alloc(alloc, size, align, scope);
  45    if (mem == NULL)
  46       return NULL;
  47
  48    memset(mem, 0, size);
  49
  50    return mem;
  51 }
  52
  53 static inline void *
  54 vk_realloc(const VkAllocationCallbacks *alloc,
  55            void *ptr, size_t size, size_t align,
  56            VkSystemAllocationScope scope)
  57 {
  58    return alloc->pfnReallocation(alloc->pUserData, ptr, size, align, scope);
  59 }
  60
  61 static inline void
  62 vk_free(const VkAllocationCallbacks *alloc, void *data)
  63 {
  64    if (data == NULL)
  65       return;
  66
  67    alloc->pfnFree(alloc->pUserData, data);
  68 }
  69
  70 static inline char *
  71 vk_strdup(const VkAllocationCallbacks *alloc, const char *s,
  72           VkSystemAllocationScope scope)
  73 {
  74    if (s == NULL)
  75       return NULL;
  76
  77    size_t size = strlen(s) + 1;
  78    char *copy = vk_alloc(alloc, size, 1, scope);
  79    if (copy == NULL)
  80       return NULL;
  81
  82    memcpy(copy, s, size);
  83
  84    return copy;
  85 }
  86
  87 static inline void *
  88 vk_alloc2(const VkAllocationCallbacks *parent_alloc,
  89           const VkAllocationCallbacks *alloc,
  90           size_t size, size_t align,
  91           VkSystemAllocationScope scope)
  92 {
  93    if (alloc)
  94       return vk_alloc(alloc, size, align, scope);
  95    else
  96       return vk_alloc(parent_alloc, size, align, scope);
  97 }
  98
  99 static inline void *
 100 vk_zalloc2(const VkAllocationCallbacks *parent_alloc,
 101            const VkAllocationCallbacks *alloc,
 102            size_t size, size_t align,
 103            VkSystemAllocationScope scope)
 104 {
 105    void *mem = vk_alloc2(parent_alloc, alloc, size, align, scope);
 106    if (mem == NULL)
 107       return NULL;
 108
 109    memset(mem, 0, size);
 110
 111    return mem;
 112 }
 113
 114 static inline void
 115 vk_free2(const VkAllocationCallbacks *parent_alloc,
 116          const VkAllocationCallbacks *alloc,
 117          void *data)
 118 {
 119    if (alloc)
 120       vk_free(alloc, data);
 121    else
 122       vk_free(parent_alloc, data);
 123 }
 124
 125 #endif