It is accomplished ...

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96
2002-07-09 12:24:59 +00:00
commit 52a3801208
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+//
+//	$Id: Locker.h,v 1.1 2002/07/09 12:24:33 ejakowatz Exp $
+//
+//	This is the BLocker interface for OpenBeOS.  It has been created to
+//	be source and binary compatible with the BeOS version of BLocker.
+//
+
+
+#ifndef	_OPENBEOS_LOCKER_H
+#define	_OPENBEOS_LOCKER_H
+
+
+#include <OS.h>
+#include <SupportDefs.h>
+
+
+#ifdef USE_OPENBEOS_NAMESPACE
+namespace OpenBeOS {
+#endif
+
+class BLocker {
+public:
+	BLocker();
+	BLocker(const char *name);
+	BLocker(bool benaphore_style);
+	BLocker(const char *name, bool benaphore_style);
+	
+	// The following constructor is not documented in the BeBook
+	// and is only listed here to ensure binary compatibility.
+	// DO NOT USE THIS CONSTRUCTOR!
+	BLocker(const char *name, bool benaphore_style, bool);
+
+	virtual ~BLocker();
+
+	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:
+	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;
+	
+	// Reserved space for future changes to BLocker
+	int32 fReservedSpace[4];
+};
+
+#ifdef USE_OPENBEOS_NAMESPACE
+}
+#endif
+
+#endif // _OPENBEOS_LOCKER_H