version 1.12, 2008/09/05 20:37:24
|
version 1.14, 2008/09/16 18:37:03
|
|
|
Semaphore _rlock; | Semaphore _rlock; |
Mutex _wlock; | Mutex _wlock; |
Mutex _internal_lock; | Mutex _internal_lock; |
|
AtomicInt _readers; |
|
AtomicInt _writers; |
ReadWriteSemRep() : | ReadWriteSemRep() : |
_rlock(10), _wlock(), _internal_lock() |
_rlock(10), _wlock(), _internal_lock(), _readers(0), _writers(0) |
{ | { |
} | } |
}; | }; |
|
|
| |
~ReadWriteSem(); | ~ReadWriteSem(); |
| |
// @exception WaitFailed |
void waitRead(); |
inline void wait_read(ThreadType caller) |
|
{ |
|
_wait(false, caller); |
|
} |
|
|
|
// @exception WaitFailed |
|
inline void wait_write(ThreadType caller) |
|
{ |
|
_wait(true, caller); |
|
} |
|
| |
// @exception Permission |
void waitWrite(); |
inline void unlock_read(ThreadType caller) |
|
{ |
|
_unlock(false, caller); |
|
} |
|
| |
// @exception Permission |
void unlockRead(); |
inline void unlock_write(ThreadType caller) |
|
{ |
|
_unlock(true, caller); |
|
} |
|
| |
int read_count() const; |
void unlockWrite(); |
int write_count() const; |
|
| |
private: | private: |
// @exception WaitFailed |
|
void _wait(Boolean writeLock, ThreadType caller); |
|
| |
// @exception Permission |
|
void _unlock(Boolean writeLock, ThreadType caller); |
|
|
|
AtomicInt _readers; |
|
AtomicInt _writers; |
|
ReadWriteSemRep _rwlock; | ReadWriteSemRep _rwlock; |
}; | }; |
| |
|
|
| |
ReadLock(ReadWriteSem& rwsem) : _rwsem(rwsem) | ReadLock(ReadWriteSem& rwsem) : _rwsem(rwsem) |
{ | { |
_rwsem.wait_read(Threads::self()); |
_rwsem.waitRead(); |
} | } |
| |
~ReadLock() | ~ReadLock() |
{ | { |
_rwsem.unlock_read(Threads::self()); |
_rwsem.unlockRead(); |
} | } |
| |
private: | private: |
|
|
| |
WriteLock(ReadWriteSem& rwsem) : _rwsem(rwsem) | WriteLock(ReadWriteSem& rwsem) : _rwsem(rwsem) |
{ | { |
_rwsem.wait_write(Threads::self()); |
_rwsem.waitWrite(); |
} | } |
| |
~WriteLock() | ~WriteLock() |
{ | { |
_rwsem.unlock_write(Threads::self()); |
_rwsem.unlockWrite(); |
} | } |
| |
private: | private: |