std::shared_mutex:: try_lock

bool try_lock ( ) ;		(since C++17)

Tries to lock the mutex. Returns immediately. On successful lock acquisition returns true , otherwise returns false .

This function is allowed to fail spuriously and return false even if the mutex is not currently locked by any other thread.

If try_lock is called by a thread that already owns the mutex in any mode (shared or exclusive), the behavior is undefined.

Prior unlock() operation on the same mutex synchronizes-with (as defined in std::memory_order ) this operation if it returns true . Note that prior lock() does not synchronize with this operation if it returns false .

Parameters

(none)

Return value

true if the lock was acquired successfully, otherwise false .

Exceptions

Throws nothing.

Example

This section is incomplete Reason: no example

See also

lock	locks the mutex, blocks if the mutex is not available (public member function)
unlock	unlocks the mutex (public member function)
C documentation for mtx_trylock