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boostcondition-variablerecursive-mutex

Boost condition_variable argument error

I encounter an error in the code below. 

recursive_mutex m_RecurMutex;
condition_variable cond;
unique_lock<recursive_mutex> lock(m_RecurMutex);
cond.wait(lock); // Error Here.

What is the reason causing this error?

Solution

  • I assume the error is

    mutex.cc: In function ‘int main()’:
mutex.cc:9: error: no matching function for call to ‘boost::condition_variable::wait(boost::unique_lock<boost::recursive_mutex>&)’
/opt/local/include/boost/thread/pthread/condition_variable.hpp:17: note: candidates are: void boost::condition_variable::wait(boost::unique_lock<boost::mutex>&)
i

    if not, please correct me. The documentation shows boost::condition_variable::lock takes a boost::unique_lock<boost::mutex> as an argument, not a boost::unique_lock<boost::recursive_mutex> as in your example.