Boost.Threads question

4 Dec 2002

      Hi,

I'm a newbie to C++ and Boost and I'm trying to port a threaded C program I
have to Boost.Threads.  I'm trying to use scoped_try_lock to test a lock on
mutex and it's not working.  I'm obviously doing something wrong but I can't
figure it out.  Below is the source code.  Any help would be greatly
appreciated.

Thanks,
James

SOURCE:

#include <iostream>
#include <boost/thread/thread.hpp>
#include <boost/thread/exceptions.hpp>

using namespace std;

boost::try_mutex mutex;

void thread_test( void )
{
	cout << "thread: locking mutex\n";

	{
		boost::try_mutex::scoped_try_lock lock(mutex);
		cout << "thread: sleeping for 10 seconds\n";
		sleep(10);
	}

	cout << "thread: unlocked mutex - goodbye!\n";

	return;
}

int main( void )
{
	cout << "main: creating thread\n";
	boost::thread thread(thread_test);

	cout << "main: sleeping for 2 seconds\n";
	sleep(2);

	cout << "main: trying to lock mutex\n";
	boost::try_mutex::scoped_try_lock lock(mutex,true);

	while ( !lock.try_lock() )
		cout << "main: retrying to lock mutex\n";

	cout << "main: joining thread\n";
	thread.join();

	cout << "main: thread joined\n";
	return 0;
}

Boost.Threads question

James Zappia