EQStream abstraction layer

libs/libuv/test/test-condvar.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 <string.h>
+#include <errno.h>
+
+typedef struct worker_config {
+  uv_mutex_t mutex;
+  uv_cond_t cond;
+  int signal_delay;
+  int wait_delay;
+  int use_broadcast;
+  volatile int posted_1;
+  volatile int posted_2;
+  void (*signal_cond)(struct worker_config* c, volatile int* flag);
+  void (*wait_cond)(struct worker_config* c, const volatile int* flag);
+} worker_config;
+
+
+static void worker(void* arg) {
+  worker_config* c = arg;
+  c->signal_cond(c, &c->posted_1);
+  c->wait_cond(c, &c->posted_2);
+}
+
+
+static void condvar_signal(worker_config* c, volatile int* flag) {
+  if (c->signal_delay)
+    uv_sleep(c->signal_delay);
+
+  uv_mutex_lock(&c->mutex);
+  ASSERT(*flag == 0);
+  *flag = 1;
+  if (c->use_broadcast)
+    uv_cond_broadcast(&c->cond);
+  else
+    uv_cond_signal(&c->cond);
+  uv_mutex_unlock(&c->mutex);
+}
+
+
+static void condvar_wait(worker_config* c, const volatile int* flag) {
+  uv_mutex_lock(&c->mutex);
+  if (c->wait_delay)
+    uv_sleep(c->wait_delay);
+  while (*flag == 0) {
+    uv_cond_wait(&c->cond, &c->mutex);
+  }
+  ASSERT(*flag == 1);
+  uv_mutex_unlock(&c->mutex);
+}
+
+
+TEST_IMPL(condvar_1) {
+  uv_thread_t thread;
+  worker_config wc;
+
+  memset(&wc, 0, sizeof(wc));
+  wc.wait_delay = 100;
+  wc.signal_cond = condvar_signal;
+  wc.wait_cond = condvar_wait;
+
+  ASSERT(0 == uv_cond_init(&wc.cond));
+  ASSERT(0 == uv_mutex_init(&wc.mutex));
+  ASSERT(0 == uv_thread_create(&thread, worker, &wc));
+
+  wc.wait_cond(&wc, &wc.posted_1);
+  wc.signal_cond(&wc, &wc.posted_2);
+
+  ASSERT(0 == uv_thread_join(&thread));
+  uv_mutex_destroy(&wc.mutex);
+  uv_cond_destroy(&wc.cond);
+
+  return 0;
+}
+
+
+TEST_IMPL(condvar_2) {
+  uv_thread_t thread;
+  worker_config wc;
+
+  memset(&wc, 0, sizeof(wc));
+  wc.signal_delay = 100;
+  wc.signal_cond = condvar_signal;
+  wc.wait_cond = condvar_wait;
+
+  ASSERT(0 == uv_cond_init(&wc.cond));
+  ASSERT(0 == uv_mutex_init(&wc.mutex));
+  ASSERT(0 == uv_thread_create(&thread, worker, &wc));
+
+  wc.wait_cond(&wc, &wc.posted_1);
+  wc.signal_cond(&wc, &wc.posted_2);
+
+  ASSERT(0 == uv_thread_join(&thread));
+  uv_mutex_destroy(&wc.mutex);
+  uv_cond_destroy(&wc.cond);
+
+  return 0;
+}
+
+
+static void condvar_timedwait(worker_config* c, const volatile int* flag) {
+  int r;
+
+  uv_mutex_lock(&c->mutex);
+  if (c->wait_delay)
+    uv_sleep(c->wait_delay);
+  while (*flag == 0) {
+    r = uv_cond_timedwait(&c->cond, &c->mutex, (uint64_t)(150 * 1e6));
+    ASSERT(r == 0);
+  }
+  uv_mutex_unlock(&c->mutex);
+}
+
+
+TEST_IMPL(condvar_3) {
+  uv_thread_t thread;
+  worker_config wc;
+
+  memset(&wc, 0, sizeof(wc));
+  wc.signal_delay = 100;
+  wc.signal_cond = condvar_signal;
+  wc.wait_cond = condvar_timedwait;
+
+  ASSERT(0 == uv_cond_init(&wc.cond));
+  ASSERT(0 == uv_mutex_init(&wc.mutex));
+  ASSERT(0 == uv_thread_create(&thread, worker, &wc));
+
+  wc.wait_cond(&wc, &wc.posted_1);
+  wc.signal_cond(&wc, &wc.posted_2);
+
+  ASSERT(0 == uv_thread_join(&thread));
+  uv_mutex_destroy(&wc.mutex);
+  uv_cond_destroy(&wc.cond);
+
+  return 0;
+}
+
+
+TEST_IMPL(condvar_4) {
+  uv_thread_t thread;
+  worker_config wc;
+
+  memset(&wc, 0, sizeof(wc));
+  wc.signal_delay = 100;
+  wc.signal_cond = condvar_signal;
+  wc.wait_cond = condvar_timedwait;
+
+  ASSERT(0 == uv_cond_init(&wc.cond));
+  ASSERT(0 == uv_mutex_init(&wc.mutex));
+  ASSERT(0 == uv_thread_create(&thread, worker, &wc));
+
+  wc.wait_cond(&wc, &wc.posted_1);
+  wc.signal_cond(&wc, &wc.posted_2);
+
+  ASSERT(0 == uv_thread_join(&thread));
+  uv_mutex_destroy(&wc.mutex);
+  uv_cond_destroy(&wc.cond);
+
+  return 0;
+}
+
+
+TEST_IMPL(condvar_5) {
+  uv_thread_t thread;
+  worker_config wc;
+
+  memset(&wc, 0, sizeof(wc));
+  wc.use_broadcast = 1;
+  wc.signal_delay = 100;
+  wc.signal_cond = condvar_signal;
+  wc.wait_cond = condvar_wait;
+
+  ASSERT(0 == uv_cond_init(&wc.cond));
+  ASSERT(0 == uv_mutex_init(&wc.mutex));
+  ASSERT(0 == uv_thread_create(&thread, worker, &wc));
+
+  wc.wait_cond(&wc, &wc.posted_1);
+  wc.signal_cond(&wc, &wc.posted_2);
+
+  ASSERT(0 == uv_thread_join(&thread));
+  uv_mutex_destroy(&wc.mutex);
+  uv_cond_destroy(&wc.cond);
+
+  return 0;
+}