std::unique_lock<Mutex>::try_lock_until

 

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std::unique_lock

Member functions

unique_lock::unique_lock

unique_lock::~unique_lock

unique_lock::operator=

Locking

unique_lock::lock

unique_lock::try_lock

unique_lock::try_lock_for

unique_lock::try_lock_until

unique_lock::unlock

Modifiers

unique_lock::swap

unique_lock::release

Observers

unique_lock::mutex

unique_lock::owns_lock

unique_lock::operator bool

Non-member functions

swap(std::unique_lock)

 

template< class Clock, class Duration > bool try_lock_until( const std::chrono::time_point<Clock, Duration>& timeout_time );		(since C++11)

Tries to lock (i.e., takes ownership of) the associated mutex. Blocks until specified timeout_time has been reached or the lock is acquired, whichever comes first. On successful lock acquisition returns true, otherwise returns false. May block for longer than timeout_time until has been reached.

Effectively calls mutex()->try_lock_until(timeout_time).

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

Clock must meet the Clock requirements. The program is ill-formed if std::chrono::is_clock_v<Clock> is false.(since C++20)

Parameters

timeout_time

-

maximum time point to block until

Return value

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

Exceptions

• Any exceptions thrown by mutex()->try_lock_until(timeout_time).

• If there is no associated mutex, std::system_error with an error code of std::errc::operation_not_permitted.

• If the mutex is already locked, std::system_error with an error code of std::errc::resource_deadlock_would_occur.

See also

lock	locks (i.e., takes ownership of) the associated mutex (public member function)
try_lock	tries to lock (i.e., takes ownership of) the associated mutex without blocking (public member function)
try_lock_for	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)
unlock	unlocks (i.e., releases ownership of) the associated mutex (public member function)