]>
Commit | Line | Data |
---|---|---|
b1322259 RS |
1 | /* |
2 | * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. | |
71a04cfc | 3 | * |
b1322259 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
71a04cfc AG |
8 | */ |
9 | ||
10 | #include <openssl/crypto.h> | |
71a04cfc AG |
11 | |
12 | #if defined(OPENSSL_THREADS) && !defined(CRYPTO_TDEBUG) && !defined(OPENSSL_SYS_WINDOWS) | |
13 | ||
23e6bf04 DK |
14 | # ifdef PTHREAD_RWLOCK_INITIALIZER |
15 | # define USE_RWLOCK | |
16 | # endif | |
90078aa0 | 17 | |
71a04cfc AG |
18 | CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void) |
19 | { | |
23e6bf04 | 20 | # ifdef USE_RWLOCK |
71a04cfc AG |
21 | CRYPTO_RWLOCK *lock = OPENSSL_zalloc(sizeof(pthread_rwlock_t)); |
22 | if (lock == NULL) | |
23 | return NULL; | |
24 | ||
0b2fc928 F |
25 | if (pthread_rwlock_init(lock, NULL) != 0) { |
26 | OPENSSL_free(lock); | |
71a04cfc | 27 | return NULL; |
0b2fc928 | 28 | } |
23e6bf04 DK |
29 | # else |
30 | pthread_mutexattr_t attr; | |
90078aa0 DK |
31 | CRYPTO_RWLOCK *lock = OPENSSL_zalloc(sizeof(pthread_mutex_t)); |
32 | if (lock == NULL) | |
33 | return NULL; | |
34 | ||
90078aa0 DK |
35 | pthread_mutexattr_init(&attr); |
36 | pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); | |
ddb618d9 | 37 | |
90078aa0 DK |
38 | if (pthread_mutex_init(lock, &attr) != 0) { |
39 | pthread_mutexattr_destroy(&attr); | |
40 | OPENSSL_free(lock); | |
41 | return NULL; | |
42 | } | |
ddb618d9 | 43 | |
90078aa0 | 44 | pthread_mutexattr_destroy(&attr); |
23e6bf04 | 45 | # endif |
71a04cfc AG |
46 | |
47 | return lock; | |
48 | } | |
49 | ||
50 | int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock) | |
51 | { | |
23e6bf04 | 52 | # ifdef USE_RWLOCK |
71a04cfc AG |
53 | if (pthread_rwlock_rdlock(lock) != 0) |
54 | return 0; | |
23e6bf04 | 55 | # else |
90078aa0 DK |
56 | if (pthread_mutex_lock(lock) != 0) |
57 | return 0; | |
23e6bf04 | 58 | # endif |
71a04cfc AG |
59 | |
60 | return 1; | |
61 | } | |
62 | ||
63 | int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock) | |
64 | { | |
23e6bf04 | 65 | # ifdef USE_RWLOCK |
71a04cfc AG |
66 | if (pthread_rwlock_wrlock(lock) != 0) |
67 | return 0; | |
23e6bf04 | 68 | # else |
90078aa0 DK |
69 | if (pthread_mutex_lock(lock) != 0) |
70 | return 0; | |
23e6bf04 | 71 | # endif |
71a04cfc AG |
72 | |
73 | return 1; | |
74 | } | |
75 | ||
76 | int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock) | |
77 | { | |
23e6bf04 | 78 | # ifdef USE_RWLOCK |
71a04cfc AG |
79 | if (pthread_rwlock_unlock(lock) != 0) |
80 | return 0; | |
23e6bf04 | 81 | # else |
90078aa0 DK |
82 | if (pthread_mutex_unlock(lock) != 0) |
83 | return 0; | |
23e6bf04 | 84 | # endif |
71a04cfc AG |
85 | |
86 | return 1; | |
87 | } | |
88 | ||
89 | void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock) | |
90 | { | |
91 | if (lock == NULL) | |
92 | return; | |
93 | ||
23e6bf04 | 94 | # ifdef USE_RWLOCK |
71a04cfc | 95 | pthread_rwlock_destroy(lock); |
23e6bf04 | 96 | # else |
90078aa0 | 97 | pthread_mutex_destroy(lock); |
23e6bf04 | 98 | # endif |
71a04cfc AG |
99 | OPENSSL_free(lock); |
100 | ||
101 | return; | |
102 | } | |
103 | ||
104 | int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void)) | |
105 | { | |
106 | if (pthread_once(once, init) != 0) | |
107 | return 0; | |
108 | ||
109 | return 1; | |
110 | } | |
111 | ||
112 | int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *)) | |
113 | { | |
114 | if (pthread_key_create(key, cleanup) != 0) | |
115 | return 0; | |
116 | ||
117 | return 1; | |
118 | } | |
119 | ||
120 | void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key) | |
121 | { | |
122 | return pthread_getspecific(*key); | |
123 | } | |
124 | ||
125 | int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val) | |
126 | { | |
127 | if (pthread_setspecific(*key, val) != 0) | |
128 | return 0; | |
129 | ||
130 | return 1; | |
131 | } | |
132 | ||
133 | int CRYPTO_THREAD_cleanup_local(CRYPTO_THREAD_LOCAL *key) | |
134 | { | |
135 | if (pthread_key_delete(*key) != 0) | |
136 | return 0; | |
137 | ||
138 | return 1; | |
139 | } | |
140 | ||
141 | CRYPTO_THREAD_ID CRYPTO_THREAD_get_current_id(void) | |
142 | { | |
143 | return pthread_self(); | |
144 | } | |
145 | ||
146 | int CRYPTO_THREAD_compare_id(CRYPTO_THREAD_ID a, CRYPTO_THREAD_ID b) | |
147 | { | |
148 | return pthread_equal(a, b); | |
149 | } | |
150 | ||
151 | int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock) | |
152 | { | |
11fc6c76 | 153 | # if defined(__GNUC__) && defined(__ATOMIC_ACQ_REL) |
1beca676 RL |
154 | if (__atomic_is_lock_free(sizeof(*val), val)) { |
155 | *ret = __atomic_add_fetch(val, amount, __ATOMIC_ACQ_REL); | |
156 | return 1; | |
157 | } | |
158 | # endif | |
71a04cfc AG |
159 | if (!CRYPTO_THREAD_write_lock(lock)) |
160 | return 0; | |
161 | ||
162 | *val += amount; | |
163 | *ret = *val; | |
164 | ||
165 | if (!CRYPTO_THREAD_unlock(lock)) | |
166 | return 0; | |
71a04cfc AG |
167 | |
168 | return 1; | |
169 | } | |
170 | ||
171 | #endif |