2 * nghttp2 - HTTP/2 C Library
4 * Copyright (c) 2012 Tatsuhiro Tsujikawa
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 #ifndef MALLOC_WRAPPER_H
26 #define MALLOC_WRAPPER_H
30 #include "nghttp2_mem.h"
32 /* Global variables to control the behavior of malloc() */
34 /* If nonzero, malloc failure mode is on */
35 extern int nghttp2_failmalloc;
36 /* If nghttp2_failstart <= nghttp2_nmalloc and nghttp2_failmalloc is
37 nonzero, malloc() fails. */
38 extern int nghttp2_failstart;
39 /* If nonzero, nghttp2_nmalloc is incremented if malloc() succeeds. */
40 extern int nghttp2_countmalloc;
41 /* The number of successful invocation of malloc(). This value is only
42 incremented if nghttp2_nmalloc is nonzero. */
43 extern int nghttp2_nmalloc;
45 /* Returns pointer to nghttp2_mem, which, when dereferenced, contains
46 specifically instrumented memory allocators for failmalloc
48 nghttp2_mem *nghttp2_mem_fm(void);
50 /* Copies nghttp2_failmalloc and nghttp2_countmalloc to statically
51 allocated space and sets 0 to them. This will effectively make
52 malloc() work like normal malloc(). This is useful when you want to
53 disable malloc() failure mode temporarily. */
54 void nghttp2_failmalloc_pause(void);
56 /* Restores the values of nghttp2_failmalloc and nghttp2_countmalloc
57 with the values saved by the previous
58 nghttp2_failmalloc_pause(). */
59 void nghttp2_failmalloc_unpause(void);
61 #endif /* MALLOC_WRAPPER_H */