From 71a04cfca03bf6d5a93ad3ffd23e0fb9e0da2919 Mon Sep 17 00:00:00 2001 From: Alessandro Ghedini Date: Sun, 25 Oct 2015 17:43:55 +0100 Subject: Implement new multi-threading API Reviewed-by: Rich Salz Reviewed-by: Matt Caswell --- crypto/threads_pthread.c | 167 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 167 insertions(+) create mode 100644 crypto/threads_pthread.c (limited to 'crypto/threads_pthread.c') diff --git a/crypto/threads_pthread.c b/crypto/threads_pthread.c new file mode 100644 index 0000000000..2b32e142ae --- /dev/null +++ b/crypto/threads_pthread.c @@ -0,0 +1,167 @@ +/* ==================================================================== + * Copyright (c) 2016 The OpenSSL Project. 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. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED 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 OpenSSL PROJECT OR + * ITS 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 +#include "internal/threads.h" + +#if defined(OPENSSL_THREADS) && !defined(CRYPTO_TDEBUG) && !defined(OPENSSL_SYS_WINDOWS) + +CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void) +{ + CRYPTO_RWLOCK *lock = OPENSSL_zalloc(sizeof(pthread_rwlock_t)); + if (lock == NULL) + return NULL; + + if (pthread_rwlock_init(lock, NULL) != 0) + return NULL; + + return lock; +} + +int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock) +{ + if (pthread_rwlock_rdlock(lock) != 0) + return 0; + + return 1; +} + +int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock) +{ + if (pthread_rwlock_wrlock(lock) != 0) + return 0; + + return 1; +} + +int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock) +{ + if (pthread_rwlock_unlock(lock) != 0) + return 0; + + return 1; +} + +void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock) +{ + if (lock == NULL) + return; + + pthread_rwlock_destroy(lock); + OPENSSL_free(lock); + + return; +} + +int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void)) +{ + if (pthread_once(once, init) != 0) + return 0; + + return 1; +} + +int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *)) +{ + if (pthread_key_create(key, cleanup) != 0) + return 0; + + return 1; +} + +void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key) +{ + return pthread_getspecific(*key); +} + +int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val) +{ + if (pthread_setspecific(*key, val) != 0) + return 0; + + return 1; +} + +int CRYPTO_THREAD_cleanup_local(CRYPTO_THREAD_LOCAL *key) +{ + if (pthread_key_delete(*key) != 0) + return 0; + + return 1; +} + +CRYPTO_THREAD_ID CRYPTO_THREAD_get_current_id(void) +{ + return pthread_self(); +} + +int CRYPTO_THREAD_compare_id(CRYPTO_THREAD_ID a, CRYPTO_THREAD_ID b) +{ + return pthread_equal(a, b); +} + +int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock) +{ +#ifdef __ATOMIC_RELAXED + *ret = __atomic_add_fetch(val, amount, __ATOMIC_RELAXED); +#else + if (!CRYPTO_THREAD_write_lock(lock)) + return 0; + + *val += amount; + *ret = *val; + + if (!CRYPTO_THREAD_unlock(lock)) + return 0; +#endif + + return 1; +} + +#endif -- cgit v1.2.3