1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/*
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2018, Janne Grunau
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <stddef.h>
#include <stdlib.h>
#include <errno.h>
#include <pthread.h>
#include "alloc_fail.h"
static int fail_probability;
void dav1d_setup_alloc_fail(unsigned seed, unsigned probability) {
srand(seed);
while (probability >= RAND_MAX)
probability >>= 1;
fail_probability = probability;
}
void * __wrap_malloc(size_t);
void * __wrap_malloc(size_t sz) {
if (rand() < fail_probability)
return NULL;
return malloc(sz);
}
#if defined(HAVE_POSIX_MEMALIGN)
int __wrap_posix_memalign(void **memptr, size_t alignment, size_t size);
int __wrap_posix_memalign(void **memptr, size_t alignment, size_t size) {
if (rand() < fail_probability)
return ENOMEM;
return posix_memalign(memptr, alignment, size);
}
#else
#error "HAVE_POSIX_MEMALIGN required"
#endif
int __wrap_pthread_create(pthread_t *, const pthread_attr_t *,
void *(*) (void *), void *);
int __wrap_pthread_create(pthread_t *thread, const pthread_attr_t *attr,
void *(*start_routine) (void *), void *arg)
{
if (rand() < (fail_probability + RAND_MAX/16))
return EAGAIN;
return pthread_create(thread, attr, start_routine, arg);
}
int __wrap_pthread_mutex_init(pthread_mutex_t *,
const pthread_mutexattr_t *);
int __wrap_pthread_mutex_init(pthread_mutex_t *restrict mutex,
const pthread_mutexattr_t *restrict attr)
{
if (rand() < (fail_probability + RAND_MAX/8))
return ENOMEM;
return pthread_mutex_init(mutex, attr);
}
int __wrap_pthread_cond_init(pthread_cond_t *,
const pthread_condattr_t *);
int __wrap_pthread_cond_init(pthread_cond_t *restrict cond,
const pthread_condattr_t *restrict attr)
{
if (rand() < (fail_probability + RAND_MAX/16))
return ENOMEM;
return pthread_cond_init(cond, attr);
}
|
