grpc/test/cpp/server/fixed_size_thread_pool_test.cc

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#include <condition_variable>
#include <functional>
#include <mutex>

#include <grpc++/fixed_size_thread_pool.h>
#include <gtest/gtest.h>

namespace grpc {

class FixedSizeThreadPoolTest : public ::testing::Test {
 public:
  FixedSizeThreadPoolTest() : thread_pool_(4) {}

 protected:
  FixedSizeThreadPool thread_pool_;
};

void Callback(std::mutex* mu, std::condition_variable* cv, bool* done) {
  std::unique_lock<std::mutex> lock(*mu);
  *done = true;
  cv->notify_all();
}

TEST_F(FixedSizeThreadPoolTest, Add) {
  std::mutex mu;
  std::condition_variable cv;
  bool done = false;
  std::function<void()> callback = std::bind(Callback, &mu, &cv, &done);
  thread_pool_.Add(callback);

  // Wait for the callback to finish.
  std::unique_lock<std::mutex> lock(mu);
  while (!done) {
    cv.wait(lock);
  }
}

}  // namespace grpc

int main(int argc, char** argv) {
  ::testing::InitGoogleTest(&argc, argv);
  int result = RUN_ALL_TESTS();
  return result;
}