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Diffstat (limited to '3rdparty/libuv/test/test-semaphore.c')
-rw-r--r-- | 3rdparty/libuv/test/test-semaphore.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/3rdparty/libuv/test/test-semaphore.c b/3rdparty/libuv/test/test-semaphore.c new file mode 100644 index 00000000000..ac03bb08f17 --- /dev/null +++ b/3rdparty/libuv/test/test-semaphore.c @@ -0,0 +1,111 @@ +/* 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(UV_EAGAIN == uv_sem_trywait(&sem)); + + uv_sem_post(&sem); + ASSERT(0 == uv_sem_trywait(&sem)); + ASSERT(UV_EAGAIN == uv_sem_trywait(&sem)); + + uv_sem_destroy(&sem); + + return 0; +} |