std::unique_lock::try_lock

bool try_lock();

Tries to lock the associated mutex without blocking. Effectively calls mutex()->try_lock().

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

Parameters

(none).

Return value

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

Exceptions

• Any exceptions thrown by mutex()->try_lock() (Mutex types do not throw in try_lock, but a custom Lockable might)
• 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 by this std::unique_lock, std::system_error with an error code of std::errc::resource_deadlock_would_occur

Example

See also