mirror of https://github.com/openssl/openssl.git
131 lines
2.6 KiB
C
131 lines
2.6 KiB
C
/*
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* Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/crypto.h>
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#if defined(OPENSSL_THREADS) && !defined(CRYPTO_TDEBUG) && !defined(OPENSSL_SYS_WINDOWS)
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CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void)
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{
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CRYPTO_RWLOCK *lock = OPENSSL_zalloc(sizeof(pthread_rwlock_t));
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if (lock == NULL)
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return NULL;
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if (pthread_rwlock_init(lock, NULL) != 0) {
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OPENSSL_free(lock);
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return NULL;
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}
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return lock;
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}
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int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock)
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{
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if (pthread_rwlock_rdlock(lock) != 0)
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return 0;
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return 1;
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}
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int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
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{
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if (pthread_rwlock_wrlock(lock) != 0)
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return 0;
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return 1;
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}
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int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock)
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{
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if (pthread_rwlock_unlock(lock) != 0)
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return 0;
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return 1;
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}
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void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock)
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{
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if (lock == NULL)
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return;
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pthread_rwlock_destroy(lock);
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OPENSSL_free(lock);
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return;
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}
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int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
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{
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if (pthread_once(once, init) != 0)
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return 0;
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return 1;
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}
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int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *))
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{
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if (pthread_key_create(key, cleanup) != 0)
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return 0;
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return 1;
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}
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void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key)
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{
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return pthread_getspecific(*key);
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}
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int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val)
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{
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if (pthread_setspecific(*key, val) != 0)
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return 0;
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return 1;
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}
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int CRYPTO_THREAD_cleanup_local(CRYPTO_THREAD_LOCAL *key)
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{
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if (pthread_key_delete(*key) != 0)
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return 0;
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return 1;
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}
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CRYPTO_THREAD_ID CRYPTO_THREAD_get_current_id(void)
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{
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return pthread_self();
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}
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int CRYPTO_THREAD_compare_id(CRYPTO_THREAD_ID a, CRYPTO_THREAD_ID b)
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{
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return pthread_equal(a, b);
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}
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int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock)
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{
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# if defined(__GNUC__) && defined(__ATOMIC_ACQ_REL)
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if (__atomic_is_lock_free(sizeof(*val), val)) {
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*ret = __atomic_add_fetch(val, amount, __ATOMIC_ACQ_REL);
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return 1;
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}
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# endif
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if (!CRYPTO_THREAD_write_lock(lock))
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return 0;
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*val += amount;
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*ret = *val;
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if (!CRYPTO_THREAD_unlock(lock))
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return 0;
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return 1;
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}
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#endif
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