1 /*
2  * Copyright (c) 2009-2021, Google LLC
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
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8  *       notice, this list of conditions and the following disclaimer.
9  *     * Redistributions in binary form must reproduce the above copyright
10  *       notice, this list of conditions and the following disclaimer in the
11  *       documentation and/or other materials provided with the distribution.
12  *     * Neither the name of Google LLC nor the
13  *       names of its contributors may be used to endorse or promote products
14  *       derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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20  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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25  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 #include "upb/mem/alloc.h"
29 
30 #include <stdlib.h>
31 
32 // Must be last.
33 #include "upb/port/def.inc"
34 
upb_global_allocfunc(upb_alloc * alloc,void * ptr,size_t oldsize,size_t size)35 static void* upb_global_allocfunc(upb_alloc* alloc, void* ptr, size_t oldsize,
36                                   size_t size) {
37   UPB_UNUSED(alloc);
38   UPB_UNUSED(oldsize);
39   if (size == 0) {
40     free(ptr);
41     return NULL;
42   } else {
43     return realloc(ptr, size);
44   }
45 }
46 
47 upb_alloc upb_alloc_global = {&upb_global_allocfunc};
48