| // 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 "v8.h" |
| |
| #include "cctest.h" |
| #include "platform/condition-variable.h" |
| #include "platform/time.h" |
| |
| using namespace ::v8::internal; |
| |
| |
| TEST(WaitForAfterNofityOnSameThread) { |
| for (int n = 0; n < 10; ++n) { |
| Mutex mutex; |
| ConditionVariable cv; |
| |
| LockGuard<Mutex> lock_guard(&mutex); |
| |
| cv.NotifyOne(); |
| CHECK_EQ(false, cv.WaitFor(&mutex, TimeDelta::FromMicroseconds(n))); |
| |
| cv.NotifyAll(); |
| CHECK_EQ(false, cv.WaitFor(&mutex, TimeDelta::FromMicroseconds(n))); |
| } |
| } |
| |
| |
| class ThreadWithMutexAndConditionVariable V8_FINAL : public Thread { |
| public: |
| ThreadWithMutexAndConditionVariable() |
| : Thread("ThreadWithMutexAndConditionVariable"), |
| running_(false), finished_(false) {} |
| virtual ~ThreadWithMutexAndConditionVariable() {} |
| |
| virtual void Run() V8_OVERRIDE { |
| LockGuard<Mutex> lock_guard(&mutex_); |
| running_ = true; |
| cv_.NotifyOne(); |
| while (running_) { |
| cv_.Wait(&mutex_); |
| } |
| finished_ = true; |
| cv_.NotifyAll(); |
| } |
| |
| bool running_; |
| bool finished_; |
| ConditionVariable cv_; |
| Mutex mutex_; |
| }; |
| |
| |
| TEST(MultipleThreadsWithSeparateConditionVariables) { |
| static const int kThreadCount = 128; |
| ThreadWithMutexAndConditionVariable threads[kThreadCount]; |
| |
| for (int n = 0; n < kThreadCount; ++n) { |
| LockGuard<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) { |
| LockGuard<Mutex> lock_guard(&threads[n].mutex_); |
| CHECK(threads[n].running_); |
| CHECK(!threads[n].finished_); |
| } |
| |
| for (int n = 0; n < kThreadCount; ++n) { |
| LockGuard<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. |
| LockGuard<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(); |
| LockGuard<Mutex> lock_guard(&threads[n].mutex_); |
| CHECK(!threads[n].running_); |
| CHECK(threads[n].finished_); |
| } |
| } |
| |
| |
| class ThreadWithSharedMutexAndConditionVariable V8_FINAL : public Thread { |
| public: |
| ThreadWithSharedMutexAndConditionVariable() |
| : Thread("ThreadWithSharedMutexAndConditionVariable"), |
| running_(false), finished_(false), cv_(NULL), mutex_(NULL) {} |
| virtual ~ThreadWithSharedMutexAndConditionVariable() {} |
| |
| virtual void Run() V8_OVERRIDE { |
| LockGuard<Mutex> lock_guard(mutex_); |
| running_ = true; |
| cv_->NotifyAll(); |
| while (running_) { |
| cv_->Wait(mutex_); |
| } |
| finished_ = true; |
| cv_->NotifyAll(); |
| } |
| |
| bool running_; |
| bool finished_; |
| ConditionVariable* cv_; |
| Mutex* mutex_; |
| }; |
| |
| |
| TEST(MultipleThreadsWithSharedSeparateConditionVariables) { |
| static const int kThreadCount = 128; |
| ThreadWithSharedMutexAndConditionVariable threads[kThreadCount]; |
| ConditionVariable cv; |
| Mutex mutex; |
| |
| for (int n = 0; n < kThreadCount; ++n) { |
| threads[n].mutex_ = &mutex; |
| threads[n].cv_ = &cv; |
| } |
| |
| // Start all threads. |
| { |
| LockGuard<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. |
| { |
| LockGuard<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. |
| { |
| LockGuard<Mutex> lock_guard(&mutex); |
| for (int n = 0; n < kThreadCount; ++n) { |
| CHECK(threads[n].running_); |
| CHECK(!threads[n].finished_); |
| } |
| } |
| |
| // Tell all threads to quit. |
| { |
| LockGuard<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. |
| { |
| LockGuard<Mutex> lock_guard(&mutex); |
| for (int n = 0; n < kThreadCount; ++n) { |
| while (!threads[n].finished_) { |
| cv.Wait(&mutex); |
| } |
| } |
| } |
| |
| // Make sure all threads are finished. |
| { |
| LockGuard<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 Thread { |
| public: |
| LoopIncrementThread(int rem, |
| int* counter, |
| int limit, |
| int thread_count, |
| ConditionVariable* cv, |
| 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) { |
| LockGuard<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_; |
| ConditionVariable* cv_; |
| Mutex* mutex_; |
| }; |
| |
| |
| TEST(LoopIncrement) { |
| static const int kMaxThreadCount = 16; |
| Mutex mutex; |
| ConditionVariable cv; |
| for (int thread_count = 1; thread_count < kMaxThreadCount; ++thread_count) { |
| int limit = thread_count * 100; |
| int counter = 0; |
| |
| // Setup the threads. |
| Thread** threads = new 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); |
| } |
| } |