haiku/headers/build/os/support/Autolock.h

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//
// $Id: Autolock.h 3246 2003-05-14 17:21:46Z haydentech $
//
// This is the BAutolock interface for OpenBeOS. It has been created to
// be source and binary compatible with the BeOS version of BAutolock.
// To that end, all members are inline just as with the BeOS version.
//
#ifndef _OPENBEOS_AUTOLOCK_H
#define _OPENBEOS_AUTOLOCK_H
#include <Locker.h>
#include <Looper.h>
#ifdef USE_OPENBEOS_NAMESPACE
namespace OpenBeOS {
#endif
class BAutolock {
public:
inline BAutolock(BLooper *looper);
inline BAutolock(BLocker *locker);
inline BAutolock(BLocker &locker);
inline ~BAutolock();
inline bool IsLocked(void);
private:
BLocker *fTheLocker;
BLooper *fTheLooper;
bool fIsLocked;
};
inline BAutolock::BAutolock(BLooper *looper) :
fTheLocker(NULL), fTheLooper(looper), fIsLocked(looper->Lock())
{
}
inline BAutolock::BAutolock(BLocker *locker) :
fTheLocker(locker), fTheLooper(NULL), fIsLocked(locker->Lock())
{
}
inline BAutolock::BAutolock(BLocker &locker) :
fTheLocker(&locker), fTheLooper(NULL), fIsLocked(locker.Lock())
{
}
inline BAutolock::~BAutolock()
{
if (fIsLocked) {
if (fTheLooper != NULL) {
fTheLooper->Unlock();
} else {
fTheLocker->Unlock();
}
}
}
inline bool BAutolock::IsLocked()
{
return fIsLocked;
}
#ifdef USE_OPENBEOS_NAMESPACE
}
#endif
#endif // _OPENBEOS_LOCKER_H