win: port semaphore test

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();
 }
 
 struct ThreadMainInfo {
+#if defined(OS_POSIX)
   pthread_t pthread;
+#elif defined(OS_WIN)
+  HANDLE thread;
+#endif
   Semaphore* semaphore;
   size_t iterations;
 };
 
-void* ThreadMain(void* argument) {
+#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;
 
-  int rv = pthread_create(&info.pthread, nullptr, ThreadMain, &info);
-  ASSERT_EQ(0, rv) << "pthread_create";
+  ASSERT_NO_FATAL_FAILURE(StartThread(&info));
 
   semaphore.Signal();
 
-  rv = pthread_join(info.pthread, nullptr);
-  ASSERT_EQ(0, rv) << "pthread_join";
+  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;
-  int rv;
   for (size_t index = 0; index < kThreads; ++index) {
     info[index].semaphore = &semaphore;
     info[index].iterations = index;
     iterations += info[index].iterations;
 
-    rv =
-        pthread_create(&info[index].pthread, nullptr, ThreadMain, &info[index]);
-    ASSERT_EQ(0, rv) << "pthread_create";
+    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) {
-    rv = pthread_join(info[index].pthread, nullptr);
-    ASSERT_EQ(0, rv) << "pthread_join";
+    JoinThread(&info[index]);
   }
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad