2 * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
10 /* We need to use the OPENSSL_fork_*() deprecated APIs */
11 #define OPENSSL_SUPPRESS_DEPRECATED
13 #include <openssl/crypto.h>
14 #include "internal/cryptlib.h"
20 #if defined(OPENSSL_THREADS) && !defined(CRYPTO_TDEBUG) && !defined(OPENSSL_SYS_WINDOWS)
22 # if defined(OPENSSL_SYS_UNIX)
23 # include <sys/types.h>
27 # ifdef PTHREAD_RWLOCK_INITIALIZER
31 CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void)
36 if ((lock = OPENSSL_zalloc(sizeof(pthread_rwlock_t))) == NULL) {
37 /* Don't set error, to avoid recursion blowup. */
41 if (pthread_rwlock_init(lock, NULL) != 0) {
46 pthread_mutexattr_t attr;
49 if ((lock = OPENSSL_zalloc(sizeof(pthread_mutex_t))) == NULL) {
50 /* Don't set error, to avoid recursion blowup. */
54 pthread_mutexattr_init(&attr);
55 #if defined(__TANDEM) && defined(_SPT_MODEL_)
56 pthread_mutexattr_setkind_np(&attr,MUTEX_RECURSIVE_NP);
58 pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
61 if (pthread_mutex_init(lock, &attr) != 0) {
62 pthread_mutexattr_destroy(&attr);
67 pthread_mutexattr_destroy(&attr);
73 int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock)
76 if (pthread_rwlock_rdlock(lock) != 0)
79 if (pthread_mutex_lock(lock) != 0)
86 int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
89 if (pthread_rwlock_wrlock(lock) != 0)
92 if (pthread_mutex_lock(lock) != 0)
99 int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock)
102 if (pthread_rwlock_unlock(lock) != 0)
105 if (pthread_mutex_unlock(lock) != 0)
112 void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock)
118 pthread_rwlock_destroy(lock);
120 pthread_mutex_destroy(lock);
127 int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
129 if (pthread_once(once, init) != 0)
135 int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *))
137 if (pthread_key_create(key, cleanup) != 0)
143 void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key)
145 return pthread_getspecific(*key);
148 int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val)
150 if (pthread_setspecific(*key, val) != 0)
156 int CRYPTO_THREAD_cleanup_local(CRYPTO_THREAD_LOCAL *key)
158 if (pthread_key_delete(*key) != 0)
164 CRYPTO_THREAD_ID CRYPTO_THREAD_get_current_id(void)
166 return pthread_self();
169 int CRYPTO_THREAD_compare_id(CRYPTO_THREAD_ID a, CRYPTO_THREAD_ID b)
171 return pthread_equal(a, b);
174 int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock)
176 # if defined(__GNUC__) && defined(__ATOMIC_ACQ_REL)
177 if (__atomic_is_lock_free(sizeof(*val), val)) {
178 *ret = __atomic_add_fetch(val, amount, __ATOMIC_ACQ_REL);
181 # elif defined(__sun) && (defined(__SunOS_5_10) || defined(__SunOS_5_11))
182 /* This will work for all future Solaris versions. */
184 *ret = atomic_add_int_nv((volatile unsigned int *)val, amount);
188 if (!CRYPTO_THREAD_write_lock(lock))
194 if (!CRYPTO_THREAD_unlock(lock))
201 # ifdef OPENSSL_SYS_UNIX
203 static pthread_once_t fork_once_control = PTHREAD_ONCE_INIT;
205 static void fork_once_func(void)
207 # ifndef OPENSSL_NO_DEPRECATED_3_0
208 pthread_atfork(OPENSSL_fork_prepare,
209 OPENSSL_fork_parent, OPENSSL_fork_child);
214 int openssl_init_fork_handlers(void)
216 # ifdef OPENSSL_SYS_UNIX
217 if (pthread_once(&fork_once_control, fork_once_func) == 0)
222 # endif /* FIPS_MODULE */
224 int openssl_get_fork_id(void)