Refactor unit tests for the base library to use GTest.

test/cctest/test-condition-variable.cc

-// Copyright 2013 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "src/v8.h"
-
-#include "src/base/platform/condition-variable.h"
-#include "src/base/platform/time.h"
-#include "test/cctest/cctest.h"
-
-using namespace ::v8::internal;
-
-
-TEST(WaitForAfterNofityOnSameThread) {
-  for (int n = 0; n < 10; ++n) {
-    v8::base::Mutex mutex;
-    v8::base::ConditionVariable cv;
-
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&mutex);
-
-    cv.NotifyOne();
-    CHECK_EQ(false,
-             cv.WaitFor(&mutex, v8::base::TimeDelta::FromMicroseconds(n)));
-
-    cv.NotifyAll();
-    CHECK_EQ(false,
-             cv.WaitFor(&mutex, v8::base::TimeDelta::FromMicroseconds(n)));
-  }
-}
-
-
-class ThreadWithMutexAndConditionVariable V8_FINAL : public v8::base::Thread {
- public:
-  ThreadWithMutexAndConditionVariable()
-      : Thread("ThreadWithMutexAndConditionVariable"),
-        running_(false), finished_(false) {}
-  virtual ~ThreadWithMutexAndConditionVariable() {}
-
-  virtual void Run() V8_OVERRIDE {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&mutex_);
-    running_ = true;
-    cv_.NotifyOne();
-    while (running_) {
-      cv_.Wait(&mutex_);
-    }
-    finished_ = true;
-    cv_.NotifyAll();
-  }
-
-  bool running_;
-  bool finished_;
-  v8::base::ConditionVariable cv_;
-  v8::base::Mutex mutex_;
-};
-
-
-TEST(MultipleThreadsWithSeparateConditionVariables) {
-  static const int kThreadCount = 128;
-  ThreadWithMutexAndConditionVariable threads[kThreadCount];
-
-  for (int n = 0; n < kThreadCount; ++n) {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&threads[n].mutex_);
-    CHECK(!threads[n].running_);
-    CHECK(!threads[n].finished_);
-    threads[n].Start();
-    // Wait for nth thread to start.
-    while (!threads[n].running_) {
-      threads[n].cv_.Wait(&threads[n].mutex_);
-    }
-  }
-
-  for (int n = kThreadCount - 1; n >= 0; --n) {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&threads[n].mutex_);
-    CHECK(threads[n].running_);
-    CHECK(!threads[n].finished_);
-  }
-
-  for (int n = 0; n < kThreadCount; ++n) {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&threads[n].mutex_);
-    CHECK(threads[n].running_);
-    CHECK(!threads[n].finished_);
-    // Tell the nth thread to quit.
-    threads[n].running_ = false;
-    threads[n].cv_.NotifyOne();
-  }
-
-  for (int n = kThreadCount - 1; n >= 0; --n) {
-    // Wait for nth thread to quit.
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&threads[n].mutex_);
-    while (!threads[n].finished_) {
-      threads[n].cv_.Wait(&threads[n].mutex_);
-    }
-    CHECK(!threads[n].running_);
-    CHECK(threads[n].finished_);
-  }
-
-  for (int n = 0; n < kThreadCount; ++n) {
-    threads[n].Join();
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&threads[n].mutex_);
-    CHECK(!threads[n].running_);
-    CHECK(threads[n].finished_);
-  }
-}
-
-
-class ThreadWithSharedMutexAndConditionVariable V8_FINAL
-    : public v8::base::Thread {
- public:
-  ThreadWithSharedMutexAndConditionVariable()
-      : Thread("ThreadWithSharedMutexAndConditionVariable"),
-        running_(false), finished_(false), cv_(NULL), mutex_(NULL) {}
-  virtual ~ThreadWithSharedMutexAndConditionVariable() {}
-
-  virtual void Run() V8_OVERRIDE {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(mutex_);
-    running_ = true;
-    cv_->NotifyAll();
-    while (running_) {
-      cv_->Wait(mutex_);
-    }
-    finished_ = true;
-    cv_->NotifyAll();
-  }
-
-  bool running_;
-  bool finished_;
-  v8::base::ConditionVariable* cv_;
-  v8::base::Mutex* mutex_;
-};
-
-
-TEST(MultipleThreadsWithSharedSeparateConditionVariables) {
-  static const int kThreadCount = 128;
-  ThreadWithSharedMutexAndConditionVariable threads[kThreadCount];
-  v8::base::ConditionVariable cv;
-  v8::base::Mutex mutex;
-
-  for (int n = 0; n < kThreadCount; ++n) {
-    threads[n].mutex_ = &mutex;
-    threads[n].cv_ = &cv;
-  }
-
-  // Start all threads.
-  {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&mutex);
-    for (int n = 0; n < kThreadCount; ++n) {
-      CHECK(!threads[n].running_);
-      CHECK(!threads[n].finished_);
-      threads[n].Start();
-    }
-  }
-
-  // Wait for all threads to start.
-  {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&mutex);
-    for (int n = kThreadCount - 1; n >= 0; --n) {
-      while (!threads[n].running_) {
-        cv.Wait(&mutex);
-      }
-    }
-  }
-
-  // Make sure that all threads are running.
-  {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&mutex);
-    for (int n = 0; n < kThreadCount; ++n) {
-      CHECK(threads[n].running_);
-      CHECK(!threads[n].finished_);
-    }
-  }
-
-  // Tell all threads to quit.
-  {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&mutex);
-    for (int n = kThreadCount - 1; n >= 0; --n) {
-      CHECK(threads[n].running_);
-      CHECK(!threads[n].finished_);
-      // Tell the nth thread to quit.
-      threads[n].running_ = false;
-    }
-    cv.NotifyAll();
-  }
-
-  // Wait for all threads to quit.
-  {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&mutex);
-    for (int n = 0; n < kThreadCount; ++n) {
-      while (!threads[n].finished_) {
-        cv.Wait(&mutex);
-      }
-    }
-  }
-
-  // Make sure all threads are finished.
-  {
-    v8::base::LockGuard<v8::base::Mutex> lock_guard(&mutex);
-    for (int n = kThreadCount - 1; n >= 0; --n) {
-      CHECK(!threads[n].running_);
-      CHECK(threads[n].finished_);
-    }
-  }
-
-  // Join all threads.
-  for (int n = 0; n < kThreadCount; ++n) {
-    threads[n].Join();
-  }
-}
-
-
-class LoopIncrementThread V8_FINAL : public v8::base::Thread {
- public:
-  LoopIncrementThread(int rem,
-                      int* counter,
-                      int limit,
-                      int thread_count,
-                      v8::base::ConditionVariable* cv,
-                      v8::base::Mutex* mutex)
-      : Thread("LoopIncrementThread"), rem_(rem), counter_(counter),
-        limit_(limit), thread_count_(thread_count), cv_(cv), mutex_(mutex) {
-    CHECK_LT(rem, thread_count);
-    CHECK_EQ(0, limit % thread_count);
-  }
-
-  virtual void Run() V8_OVERRIDE {
-    int last_count = -1;
-    while (true) {
-      v8::base::LockGuard<v8::base::Mutex> lock_guard(mutex_);
-      int count = *counter_;
-      while (count % thread_count_ != rem_ && count < limit_) {
-        cv_->Wait(mutex_);
-        count = *counter_;
-      }
-      if (count >= limit_) break;
-      CHECK_EQ(*counter_, count);
-      if (last_count != -1) {
-        CHECK_EQ(last_count + (thread_count_ - 1), count);
-      }
-      count++;
-      *counter_ = count;
-      last_count = count;
-      cv_->NotifyAll();
-    }
-  }
-
- private:
-  const int rem_;
-  int* counter_;
-  const int limit_;
-  const int thread_count_;
-  v8::base::ConditionVariable* cv_;
-  v8::base::Mutex* mutex_;
-};
-
-
-TEST(LoopIncrement) {
-  static const int kMaxThreadCount = 16;
-  v8::base::Mutex mutex;
-  v8::base::ConditionVariable cv;
-  for (int thread_count = 1; thread_count < kMaxThreadCount; ++thread_count) {
-    int limit = thread_count * 100;
-    int counter = 0;
-
-    // Setup the threads.
-    v8::base::Thread** threads = new v8::base::Thread*[thread_count];
-    for (int n = 0; n < thread_count; ++n) {
-      threads[n] = new LoopIncrementThread(
-          n, &counter, limit, thread_count, &cv, &mutex);
-    }
-
-    // Start all threads.
-    for (int n = thread_count - 1; n >= 0; --n) {
-      threads[n]->Start();
-    }
-
-    // Join and cleanup all threads.
-    for (int n = 0; n < thread_count; ++n) {
-      threads[n]->Join();
-      delete threads[n];
-    }
-    delete[] threads;
-
-    CHECK_EQ(limit, counter);
-  }
-}