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std::shared_lock<Mutex>::try_lock_for

From cppreference.com
< cpp‎ | thread‎ | shared lock
 
 
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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.

The behavior is undefined if Mutex does not meet the SharedTimedLockable requirements.

Contents

[edit] Parameters

timeout_duration - maximum duration to block for

[edit] Return value

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

[edit] Exceptions

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

[edit] Example

[edit] See also

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