| /* Copyright Joyent, Inc. and other Node contributors. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #include "uv.h" |
| #include "task.h" |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| typedef struct { |
| uv_mutex_t mutex; |
| uv_sem_t sem; |
| int delay; |
| volatile int posted; |
| } worker_config; |
| |
| |
| static void worker(void* arg) { |
| worker_config* c = arg; |
| |
| if (c->delay) |
| uv_sleep(c->delay); |
| |
| uv_mutex_lock(&c->mutex); |
| ASSERT(c->posted == 0); |
| uv_sem_post(&c->sem); |
| c->posted = 1; |
| uv_mutex_unlock(&c->mutex); |
| } |
| |
| |
| TEST_IMPL(semaphore_1) { |
| uv_thread_t thread; |
| worker_config wc; |
| |
| memset(&wc, 0, sizeof(wc)); |
| |
| ASSERT(0 == uv_sem_init(&wc.sem, 0)); |
| ASSERT(0 == uv_mutex_init(&wc.mutex)); |
| ASSERT(0 == uv_thread_create(&thread, worker, &wc)); |
| |
| uv_sleep(100); |
| uv_mutex_lock(&wc.mutex); |
| ASSERT(wc.posted == 1); |
| uv_sem_wait(&wc.sem); /* should not block */ |
| uv_mutex_unlock(&wc.mutex); /* ergo, it should be ok to unlock after wait */ |
| |
| ASSERT(0 == uv_thread_join(&thread)); |
| uv_mutex_destroy(&wc.mutex); |
| uv_sem_destroy(&wc.sem); |
| |
| return 0; |
| } |
| |
| |
| TEST_IMPL(semaphore_2) { |
| uv_thread_t thread; |
| worker_config wc; |
| |
| memset(&wc, 0, sizeof(wc)); |
| wc.delay = 100; |
| |
| ASSERT(0 == uv_sem_init(&wc.sem, 0)); |
| ASSERT(0 == uv_mutex_init(&wc.mutex)); |
| ASSERT(0 == uv_thread_create(&thread, worker, &wc)); |
| |
| uv_sem_wait(&wc.sem); |
| |
| ASSERT(0 == uv_thread_join(&thread)); |
| uv_mutex_destroy(&wc.mutex); |
| uv_sem_destroy(&wc.sem); |
| |
| return 0; |
| } |
| |
| |
| TEST_IMPL(semaphore_3) { |
| uv_sem_t sem; |
| |
| ASSERT(0 == uv_sem_init(&sem, 3)); |
| uv_sem_wait(&sem); /* should not block */ |
| uv_sem_wait(&sem); /* should not block */ |
| ASSERT(0 == uv_sem_trywait(&sem)); |
| ASSERT(-1 == uv_sem_trywait(&sem)); |
| |
| uv_sem_post(&sem); |
| ASSERT(0 == uv_sem_trywait(&sem)); |
| ASSERT(-1 == uv_sem_trywait(&sem)); |
| |
| uv_sem_destroy(&sem); |
| |
| return 0; |
| } |