referenceCountingLock.h

Go to the documentation of this file.

#ifndef REFERENCECOUNTINGLOCK_H
#define REFERENCECOUNTINGLOCK_H

#ifdef epicsExportSharedSymbols
#   define referenceCountingLockEpicsExportSharedSymbols
#   undef epicsExportSharedSymbols
#endif

#include <pv/lock.h>
#include <pv/pvType.h>
#include <pv/sharedPtr.h>

#ifdef referenceCountingLockEpicsExportSharedSymbols
#   define epicsExportSharedSymbols
#       undef referenceCountingLockEpicsExportSharedSymbols
#endif

namespace epics {
namespace pvAccess {

class ReferenceCountingLock
{
public:
    POINTER_DEFINITIONS(ReferenceCountingLock);

    ReferenceCountingLock();
    virtual ~ReferenceCountingLock();
    bool acquire(epics::pvData::int64 msecs);
    void release();
    int increment();
    int decrement();
private:
    int _references;
    epics::pvData::Mutex _mutex;
    epics::pvData::Mutex _countMutex;
};

}
}

#endif  /* REFERENCECOUNTINGLOCK_H */