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std::unique...ry_lock_for(3) C++ Standard Libary std::unique...ry_lock_for(3) NAME std::unique_lock::try_lock_for - std::unique_lock::try_lock_for Synopsis template< class Rep, class Period > bool try_lock_for( const std::chrono::duration<Rep,Period>& (since C++11) timeout_duration ); Tries to lock (i.e., takes ownership of) the associated mutex. Blocks until specified timeout_duration has elapsed or the lock is acquired, whichever comes first. On successful lock acquisition returns true, otherwise re- turns false. Effectively calls mutex()->try_lock_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 by this std::unique_lock. 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_for(timeout_duration) * 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 Example This section is incomplete Reason: no example See also lock locks (i.e., takes ownership of) the associated mutex (public member function) tries to lock (i.e., takes ownership of) the associ- ated mutex without try_lock blocking (public member function) try_lock_for tries to lock the associated mutex, for the specified duration (public member function of std::shared_lock<Mutex>) tries to lock (i.e., takes ownership of) the associ- ated TimedLockable try_lock_until mutex, returns if the mutex has been unavailable un- til specified time point has been reached (public member function) unlock unlocks (i.e., releases ownership of) the associated mutex (public member function) http://cppreference.com 2022.07.31 std::unique...ry_lock_for(3)
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