Copy Crashpad into the Chrome tree instead of importing it via DEPS

third_party/crashpad/crashpad/util/synchronization/semaphore_test.cc

+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed 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.
+
+#include "util/synchronization/semaphore.h"
+
+#if defined(OS_POSIX)
+#include <pthread.h>
+#endif  // OS_POSIX
+
+#include "gtest/gtest.h"
+
+namespace crashpad {
+namespace test {
+namespace {
+
+TEST(Semaphore, Simple) {
+  Semaphore semaphore(1);
+  semaphore.Wait();
+  semaphore.Signal();
+}
+
+TEST(Semaphore, TimedWait) {
+  Semaphore semaphore(0);
+  semaphore.Signal();
+  EXPECT_TRUE(semaphore.TimedWait(0.01));  // 10ms
+}
+
+TEST(Semaphore, TimedWaitTimeout) {
+  Semaphore semaphore(0);
+  EXPECT_FALSE(semaphore.TimedWait(0.01));  // 10ms
+}
+
+struct ThreadMainInfo {
+#if defined(OS_POSIX)
+  pthread_t pthread;
+#elif defined(OS_WIN)
+  HANDLE thread;
+#endif
+  Semaphore* semaphore;
+  size_t iterations;
+};
+
+#if defined(OS_POSIX)
+void*
+#elif defined(OS_WIN)
+DWORD WINAPI
+#endif  // OS_POSIX
+ThreadMain(void* argument) {
+  ThreadMainInfo* info = reinterpret_cast<ThreadMainInfo*>(argument);
+  for (size_t iteration = 0; iteration < info->iterations; ++iteration) {
+    info->semaphore->Wait();
+  }
+#if defined(OS_POSIX)
+  return nullptr;
+#elif defined(OS_WIN)
+  return 0;
+#endif  // OS_POSIX
+}
+
+void StartThread(ThreadMainInfo* info) {
+#if defined(OS_POSIX)
+  int rv = pthread_create(&info->pthread, nullptr, ThreadMain, info);
+  ASSERT_EQ(0, rv) << "pthread_create";
+#elif defined(OS_WIN)
+  info->thread = CreateThread(nullptr, 0, ThreadMain, info, 0, nullptr);
+  ASSERT_NE(nullptr, info->thread) << "CreateThread";
+#endif  // OS_POSIX
+}
+
+void JoinThread(ThreadMainInfo* info) {
+#if defined(OS_POSIX)
+  int rv = pthread_join(info->pthread, nullptr);
+  EXPECT_EQ(0, rv) << "pthread_join";
+#elif defined(OS_WIN)
+  DWORD result = WaitForSingleObject(info->thread, INFINITE);
+  EXPECT_EQ(WAIT_OBJECT_0, result) << "WaitForSingleObject";
+#endif  // OS_POSIX
+}
+
+TEST(Semaphore, Threaded) {
+  Semaphore semaphore(0);
+  ThreadMainInfo info;
+  info.semaphore = &semaphore;
+  info.iterations = 1;
+
+  ASSERT_NO_FATAL_FAILURE(StartThread(&info));
+
+  semaphore.Signal();
+
+  JoinThread(&info);
+}
+
+TEST(Semaphore, TenThreaded) {
+  // This test has a smaller initial value (5) than threads contending for these
+  // resources (10), and the threads each try to obtain the resource a different
+  // number of times.
+  Semaphore semaphore(5);
+  const size_t kThreads = 10;
+  ThreadMainInfo info[kThreads];
+  size_t iterations = 0;
+  for (size_t index = 0; index < kThreads; ++index) {
+    info[index].semaphore = &semaphore;
+    info[index].iterations = index;
+    iterations += info[index].iterations;
+
+    ASSERT_NO_FATAL_FAILURE(StartThread(&info[index]));
+  }
+
+  for (size_t iteration = 0; iteration < iterations; ++iteration) {
+    semaphore.Signal();
+  }
+
+  for (size_t index = 0; index < kThreads; ++index) {
+    JoinThread(&info[index]);
+  }
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace crashpad