| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| // |
| // Enable debug for asserts in this module regardless of what the project-wide |
| // setting is. |
| // |
| #undef NDEBUG |
| |
| #include <qpid/dispatch/threading.h> |
| #include <qpid/dispatch/ctools.h> |
| #include <stdio.h> |
| #include <pthread.h> |
| #include <assert.h> |
| |
| struct sys_mutex_t { |
| pthread_mutex_t mutex; |
| #ifndef NDEBUG |
| // In a debug build, used to assert correct use of mutex. |
| int acquired; |
| #endif |
| }; |
| |
| |
| // NOTE: normally it is incorrect for an assert expression to have side effects, |
| // since it could change the behavior between a debug and a release build. In |
| // this case however the mutex->acquired field only exists in a debug build, so |
| // we want operations on mutex->acquired to be compiled out of a release build. |
| #define ACQUIRE(mutex) assert(!mutex->acquired++) |
| #define RELEASE(mutex) assert(!--mutex->acquired) |
| |
| |
| sys_mutex_t *sys_mutex(void) |
| { |
| sys_mutex_t *mutex = NEW(sys_mutex_t); |
| pthread_mutex_init(&(mutex->mutex), 0); |
| #ifndef NDEBUG |
| mutex->acquired = 0; |
| #endif |
| return mutex; |
| } |
| |
| |
| void sys_mutex_free(sys_mutex_t *mutex) |
| { |
| assert(!mutex->acquired); |
| pthread_mutex_destroy(&(mutex->mutex)); |
| free(mutex); |
| } |
| |
| |
| void sys_mutex_lock(sys_mutex_t *mutex) |
| { |
| int result = pthread_mutex_lock(&(mutex->mutex)); |
| assert(result == 0); |
| ACQUIRE(mutex); |
| } |
| |
| |
| void sys_mutex_unlock(sys_mutex_t *mutex) |
| { |
| RELEASE(mutex); |
| int result = pthread_mutex_unlock(&(mutex->mutex)); |
| assert(result == 0); |
| } |
| |
| |
| struct sys_cond_t { |
| pthread_cond_t cond; |
| }; |
| |
| |
| sys_cond_t *sys_cond(void) |
| { |
| sys_cond_t *cond = NEW(sys_cond_t); |
| pthread_cond_init(&(cond->cond), 0); |
| return cond; |
| } |
| |
| |
| void sys_cond_free(sys_cond_t *cond) |
| { |
| pthread_cond_destroy(&(cond->cond)); |
| free(cond); |
| } |
| |
| |
| void sys_cond_wait(sys_cond_t *cond, sys_mutex_t *held_mutex) |
| { |
| RELEASE(held_mutex); |
| int result = pthread_cond_wait(&(cond->cond), &(held_mutex->mutex)); |
| assert(result == 0); |
| ACQUIRE(held_mutex); |
| } |
| |
| |
| void sys_cond_signal(sys_cond_t *cond) |
| { |
| int result = pthread_cond_signal(&(cond->cond)); |
| assert(result == 0); |
| } |
| |
| |
| void sys_cond_signal_all(sys_cond_t *cond) |
| { |
| int result = pthread_cond_broadcast(&(cond->cond)); |
| assert(result == 0); |
| } |
| |
| |
| struct sys_rwlock_t { |
| pthread_rwlock_t lock; |
| }; |
| |
| |
| sys_rwlock_t *sys_rwlock(void) |
| { |
| sys_rwlock_t *lock = NEW(sys_rwlock_t); |
| pthread_rwlock_init(&(lock->lock), 0); |
| return lock; |
| } |
| |
| |
| void sys_rwlock_free(sys_rwlock_t *lock) |
| { |
| pthread_rwlock_destroy(&(lock->lock)); |
| free(lock); |
| } |
| |
| |
| void sys_rwlock_wrlock(sys_rwlock_t *lock) |
| { |
| int result = pthread_rwlock_wrlock(&(lock->lock)); |
| assert(result == 0); |
| } |
| |
| |
| void sys_rwlock_rdlock(sys_rwlock_t *lock) |
| { |
| int result = pthread_rwlock_rdlock(&(lock->lock)); |
| assert(result == 0); |
| } |
| |
| |
| void sys_rwlock_unlock(sys_rwlock_t *lock) |
| { |
| int result = pthread_rwlock_unlock(&(lock->lock)); |
| assert(result == 0); |
| } |
| |
| |
| struct sys_thread_t { |
| pthread_t thread; |
| }; |
| |
| sys_thread_t *sys_thread(void *(*run_function) (void *), void *arg) |
| { |
| sys_thread_t *thread = NEW(sys_thread_t); |
| pthread_create(&(thread->thread), 0, run_function, arg); |
| return thread; |
| } |
| |
| long sys_thread_id(sys_thread_t *thread) { |
| return (long) thread->thread; |
| } |
| |
| long sys_thread_self() { |
| return pthread_self(); |
| } |
| |
| void sys_thread_free(sys_thread_t *thread) |
| { |
| free(thread); |
| } |
| |
| |
| void sys_thread_join(sys_thread_t *thread) |
| { |
| pthread_join(thread->thread, 0); |
| } |