std::shared_lock<Mutex>::try_lock_for

< cpp‎ | thread‎ | shared lock
 
 
Thread support library
Threads
(C++11)
this_thread namespace
(C++11)
(C++11)
(C++11)
Mutual exclusion
(C++11)
Generic lock management
(C++11)
(C++11)
(C++11)
(C++11)(C++11)(C++11)
(C++11)
(C++11)
Condition variables
(C++11)
Futures
(C++11)
(C++11)
(C++11)
(C++11)
 
 
template< class Rep, class Period >
bool try_lock_for( const std::chrono::duration<Rep,Period>& timeout_duration );
(since C++14)

Tries to lock the associated mutex in shared mode. Blocks until specified timeout_duration has elapsed or the lock is acquired, whichever comes first. On successful lock acquisition returns true, otherwise returns false. Effectively calls mutex()->try_lock_shared_for(timeout_duration).

This function may block for longer than timeout_duration due to scheduling or resource contention delays.

The standard recommends that a steady clock is used to measure the duration. If an implementation uses a system clock instead, the wait time may also be sensitive to clock adjustments.

std::system_error is thrown if there is no associated mutex or if the mutex is already locked.

Parameters

timeout_duration - maximum duration to block for

Return value

true if the ownership of the mutex has been acquired successfully, false otherwise.

Exceptions

  • Any exceptions thrown by mutex()->try_lock_shared_for(timeout_duration)

Example

See also

attempts to lock the associated TimedLockable mutex, returns if the mutex has been unavailable for the specified time duration
(public member function of std::unique_lock<Mutex>)
locks the associated mutex
(public member function)
tries to lock the associated mutex
(public member function)
tries to lock the associated mutex, until a specified time point
(public member function)
unlocks the associated mutex
(public member function)