std::unique_lock<Mutex>::try_lock
< cpp | thread | unique lock
bool try_lock(); |
(since C++11) | |
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
This section is incomplete Reason: no example |
See also
locks the associated mutex (public member function) | |
attempts to lock the associated TimedLockable mutex, returns if the mutex has been unavailable for the specified time duration (public member function) | |
tries to lock the associated TimedLockable mutex, returns if the mutex has been unavailable until specified time point has been reached (public member function) | |
unlocks the associated mutex (public member function) |