std::shared_mutex:: try_lock_shared
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Member functions | ||||
Exclusive locking | ||||
Shared locking | ||||
shared_mutex::try_lock_shared
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Native handle | ||||
bool
try_lock_shared
(
)
;
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(since C++17) | |
Tries to lock the mutex in shared mode. 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 currenly exclusively locked by any other thread.
A prior unlock() operation on the same mutex synchronizes-with (as defined in std::memory_order ) this operation if it returns true .
The behavior is undefined if the calling thread already owns the mutex in any mode.
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
locks the mutex, blocks if the mutex is not available
(public member function) |
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tries to lock the mutex, returns if the mutex is not available
(public member function) |
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unlocks the mutex (shared ownership)
(public member function) |