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Boost.Threadslock_error |
Introduction
Header
Synopsis
Members
Example
The lock_error class defines an exception type thrown to indicate a locking related error has been detected. Examples of such errors include a lock operation which can be determined to result in a deadlock, or unlock operations attempted by a thread that does not own the lock.
#include <boost/thread/thread.hpp>
namespace boost class lock_error : public std::runtime_error { public: lock_error(); }; }
lock_error();
Constructs a lock_error object.
#include <boost/thread/mutex.hpp> #include <boost/thread/thread.hpp> #include <iostream> int main(int, char*[]) { boost::mutex mutex; boost::mutex::scoped_lock scoped_lock(mutex); try { boost::mutex::scoped_lock deadlock(mutex); std::cout << "lock succeeded" << std::endl; } catch (boost::lock_error& err) { std::cout << err.what() << " - deadlock occurred." << std::endl; } return 0; }
The output is:
thread lock error - deadlock occurred.
Revised 01 October, 2001
© Copyright William E. Kempf 2001 all rights reserved.