CODEWITHSUNDEEP
boostlockingboost-thread
Rajeshwar
Rajeshwar

Reputation: 11651

boost::condition_variable with boost::mutex::scoped_lock

Initially I was using boost::mutex::scoped_lock as such (which worked)

boost::mutex::scoped_lock lock(mutex_name); 
condition.wait(lock); //where condition = boost::condition_variable

However later I changed the lock to the following which does not work

boost::lock_guard<boost::mutex> lock(mutex_name)
condition.wait(lock); //Error

Any suggestions on how to resolve the issue I get intellisense error stating No instance of the overloaded function matches the argument list. The compile error is

Error   7   error C2664: 'void boost::condition_variable::wait(boost::unique_lock<Mutex> &)' : cannot convert parameter 1 from 'boost::lock_guard<Mutex>' to 'boost::unique_lock<Mutex> &'

Upvotes: 0

Views: 1401

Answers (1)

Igor R.
Igor R.

Reputation: 15075

boost::lock_guard doesn't have unlock member-function, which is needed for condition. Use unique_lock instead:

boost::unique_lock<boost::mutex> lock(mut);
condition.wait(lock);

Upvotes: 3

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