C++11 mutex, wait_event

gistfile1.cpp

#include <future>

class wait_event
{
	std::condition_variable	cond;
	std::mutex		m;
public:
	void signal()
	{
		std::lock_guard<std::mutex> lock(m);
		cond.notify_all();
	}

	void wait()
	{
		std::unique_lock<std::mutex> lock(m);
		cond.wait(lock);
	}
};

int main(int argc, const char** argv)
{
	std::mutex	m;

	// manual lock/unlock
	m.lock();
	// some_not_thread_safe_function();
	m.unlock();

	{
		// scoped locked unlock
		std::lock_guard<std::mutex> lock(m);
		// some_not_thread_safe_function();
	}

	wait_event evt;

	// some other thread:   evt.wait()
	evt.signal();

	return 0;
}