Utility class to acquire a lock that is released by the destructor. More...
Public Member Functions | |
| Block (Lock *lock=0) | |
| Constructor. More... |
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| ~Block () | |
| Destructor. More... |
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| void | set (Lock *lock) |
| Acquires a lock. More... |
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| bool | try_set (Lock *lock) |
| Tries to acquire a lock. More... |
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| void | release () |
| Releases the lock. More... |
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Utility class to acquire a lock that is released by the destructor.
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explicit |
Constructor.
| lock | If not NULL, this lock is acquired. If NULL, set() can be used to explicitly acquire a lock later. |
| mi::base::Lock::Block::~Block | ( | ) |
Destructor.
Releases the lock (if it is acquired).
| void mi::base::Lock::Block::release | ( | ) |
Releases the lock.
Useful to release the lock before the destructor is called.
| void mi::base::Lock::Block::set | ( | Lock * | lock) |
Acquires a lock.
Releases the current lock (if it is set) and acquires the given lock. Useful to acquire a different lock, or to acquire a lock if no lock was acquired in the constructor.
This method does nothing if the passed lock is already acquired by this class.
| lock | The new lock to acquire. |
| bool mi::base::Lock::Block::try_set | ( | Lock * | lock) |
Tries to acquire a lock.
Releases the current lock (if it is set) and tries to acquire the given lock. Useful to acquire a different lock without blocking, or to acquire a lock without blocking if no lock was acquired in the constructor.
This method does nothing if the passed lock is already acquired by this class.
| lock | The new lock to acquire. |
true if the lock was acquired, false otherwise.