RaiiMutexBad.cpp

void lockMutexBad(bool shouldThrow) {
  std::cout << "Locking mutex manually..." << std::endl;
  globalMutex.lock();
  std::cout << "Mutex is locked!" << std::endl;

  // Could also imagine this as an early return. If you use a plain old
  // mutex, you have to remember to manually unlock before every return...
  // and it's quite easy to forget.
  if (shouldThrow) {
    std::cout << "Throwing exception" << std::endl;
    throw 1;
  }

  globalMutex.unlock();
  std::cout << "Mutex has been unlocked manually" << std::endl;
}

void lockMutexBadExample() {
  try {
    lockMutexBad(true);
  } catch (...) {
    std::cout << "Caught exception" << std::endl;
  }
  lockMutexBad(false);
}