Guard class that tries to acquire its resource upon creation and release it upon destruction.
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template<class Resource>
class RWTTryLockGuard< Resource >
RWTTryLockGuard is a guard class that tries to acquire its resource upon creation and, if successful, release it upon destruction. Guard objects work in conjunction with block statements to establish an appropriate state upon creation, maintain that state for the duration of the block, and restore the original state upon destruction. For example, a guard may acquire a mutex when created and release it when destructed. The class used as the actual template parameter for Resource
must be one that provides tryAcquire
() and release
() methods, such as some synchronization classes provided in this module.
- Example
#include <rw/sync/RWMutexLock.h>
#include <rw/sync/RWTTryLockGuard.h>
bool foo() {
{
if (!lock.isAcquired()) {
return false;
}
}
return true;
}
Implements a mutex, or mutual exclusion lock.
Definition RWMutexLock.h:231
Guard class that tries to acquire its resource upon creation and release it upon destruction.
Definition RWTTryLockGuard.h:72
- See also
- RWTLockGuard, RWTUnlockGuard