diff options
Diffstat (limited to 'libs/libevent/docs/evthread_pthread.c')
| -rw-r--r-- | libs/libevent/docs/evthread_pthread.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/libs/libevent/docs/evthread_pthread.c b/libs/libevent/docs/evthread_pthread.c deleted file mode 100644 index 4e11f74970..0000000000 --- a/libs/libevent/docs/evthread_pthread.c +++ /dev/null @@ -1,191 +0,0 @@ -/* - * Copyright 2009-2012 Niels Provos and Nick Mathewson - * - * 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. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "event2/event-config.h" -#include "evconfig-private.h" - -/* With glibc we need to define _GNU_SOURCE to get PTHREAD_MUTEX_RECURSIVE. - * This comes from evconfig-private.h - */ -#include <pthread.h> - -struct event_base; -#include "event2/thread.h" - -#include <stdlib.h> -#include <string.h> -#include "mm-internal.h" -#include "evthread-internal.h" - -static pthread_mutexattr_t attr_recursive; - -static void * -evthread_posix_lock_alloc(unsigned locktype) -{ - pthread_mutexattr_t *attr = NULL; - pthread_mutex_t *lock = mm_malloc(sizeof(pthread_mutex_t)); - if (!lock) - return NULL; - if (locktype & EVTHREAD_LOCKTYPE_RECURSIVE) - attr = &attr_recursive; - if (pthread_mutex_init(lock, attr)) { - mm_free(lock); - return NULL; - } - return lock; -} - -static void -evthread_posix_lock_free(void *lock_, unsigned locktype) -{ - pthread_mutex_t *lock = lock_; - pthread_mutex_destroy(lock); - mm_free(lock); -} - -static int -evthread_posix_lock(unsigned mode, void *lock_) -{ - pthread_mutex_t *lock = lock_; - if (mode & EVTHREAD_TRY) - return pthread_mutex_trylock(lock); - else - return pthread_mutex_lock(lock); -} - -static int -evthread_posix_unlock(unsigned mode, void *lock_) -{ - pthread_mutex_t *lock = lock_; - return pthread_mutex_unlock(lock); -} - -static unsigned long -evthread_posix_get_id(void) -{ - union { - pthread_t thr; -#if EVENT__SIZEOF_PTHREAD_T > EVENT__SIZEOF_LONG - ev_uint64_t id; -#else - unsigned long id; -#endif - } r; -#if EVENT__SIZEOF_PTHREAD_T < EVENT__SIZEOF_LONG - memset(&r, 0, sizeof(r)); -#endif - r.thr = pthread_self(); - return (unsigned long)r.id; -} - -static void * -evthread_posix_cond_alloc(unsigned condflags) -{ - pthread_cond_t *cond = mm_malloc(sizeof(pthread_cond_t)); - if (!cond) - return NULL; - if (pthread_cond_init(cond, NULL)) { - mm_free(cond); - return NULL; - } - return cond; -} - -static void -evthread_posix_cond_free(void *cond_) -{ - pthread_cond_t *cond = cond_; - pthread_cond_destroy(cond); - mm_free(cond); -} - -static int -evthread_posix_cond_signal(void *cond_, int broadcast) -{ - pthread_cond_t *cond = cond_; - int r; - if (broadcast) - r = pthread_cond_broadcast(cond); - else - r = pthread_cond_signal(cond); - return r ? -1 : 0; -} - -static int -evthread_posix_cond_wait(void *cond_, void *lock_, const struct timeval *tv) -{ - int r; - pthread_cond_t *cond = cond_; - pthread_mutex_t *lock = lock_; - - if (tv) { - struct timeval now, abstime; - struct timespec ts; - evutil_gettimeofday(&now, NULL); - evutil_timeradd(&now, tv, &abstime); - ts.tv_sec = abstime.tv_sec; - ts.tv_nsec = abstime.tv_usec*1000; - r = pthread_cond_timedwait(cond, lock, &ts); - if (r == ETIMEDOUT) - return 1; - else if (r) - return -1; - else - return 0; - } else { - r = pthread_cond_wait(cond, lock); - return r ? -1 : 0; - } -} - -int -evthread_use_pthreads(void) -{ - struct evthread_lock_callbacks cbs = { - EVTHREAD_LOCK_API_VERSION, - EVTHREAD_LOCKTYPE_RECURSIVE, - evthread_posix_lock_alloc, - evthread_posix_lock_free, - evthread_posix_lock, - evthread_posix_unlock - }; - struct evthread_condition_callbacks cond_cbs = { - EVTHREAD_CONDITION_API_VERSION, - evthread_posix_cond_alloc, - evthread_posix_cond_free, - evthread_posix_cond_signal, - evthread_posix_cond_wait - }; - /* Set ourselves up to get recursive locks. */ - if (pthread_mutexattr_init(&attr_recursive)) - return -1; - if (pthread_mutexattr_settype(&attr_recursive, PTHREAD_MUTEX_RECURSIVE)) - return -1; - - evthread_set_lock_callbacks(&cbs); - evthread_set_condition_callbacks(&cond_cbs); - evthread_set_id_callback(evthread_posix_get_id); - return 0; -} |