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-rw-r--r--3rdparty/libuv/test/test-semaphore.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/3rdparty/libuv/test/test-semaphore.c b/3rdparty/libuv/test/test-semaphore.c
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+++ b/3rdparty/libuv/test/test-semaphore.c
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+/* 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;
+}