haiku/headers/os/support/Locker.h

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/*
* Copyright 2001-2007, Haiku, Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _LOCKER_H
#define _LOCKER_H
#include <OS.h>
class BLocker {
public:
BLocker();
BLocker(const char* name);
BLocker(bool benaphoreStyle);
BLocker(const char* name, bool benaphoreStyle);
virtual ~BLocker();
status_t InitCheck() const;
bool Lock(void);
status_t LockWithTimeout(bigtime_t timeout);
void Unlock(void);
thread_id LockingThread(void) const;
bool IsLocked(void) const;
int32 CountLocks(void) const;
int32 CountLockRequests(void) const;
sem_id Sem(void) const;
private:
BLocker(const char *name, bool benaphoreStyle, bool);
void InitLocker(const char *name, bool benaphore_style);
bool AcquireLock(bigtime_t timeout, status_t *error);
int32 fBenaphoreCount;
sem_id fSemaphoreID;
thread_id fLockOwner;
int32 fRecursiveCount;
int32 _reserved[4];
};
#endif // _LOCKER_H