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 intry_lock
, but a customLockable
might) - If there is no associated mutex,
std::system_error
with an error code ofstd::errc::operation_not_permitted
- If the mutex is already locked by this
std::unique_lock
,std::system_error
with an error code ofstd::errc::resource_deadlock_would_occur
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) |
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