/usr/include/root/TRWLock.h is in libroot-core-dev 5.34.19+dfsg-1.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | // @(#)root/thread:$Id$
// Author: Fons Rademakers 04/01/2000
/*************************************************************************
* Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
#ifndef ROOT_TRWLock
#define ROOT_TRWLock
//////////////////////////////////////////////////////////////////////////
// //
// TRWLock //
// //
// This class implements a reader/writer lock. A rwlock allows //
// a resource to be accessed by multiple reader threads but only //
// one writer thread. //
// //
//////////////////////////////////////////////////////////////////////////
#ifndef ROOT_TObject
#include "TObject.h"
#endif
#ifndef ROOT_TMutex
#include "TMutex.h"
#endif
#ifndef ROOT_TCondition
#include "TCondition.h"
#endif
class TRWLock : public TObject {
private:
Int_t fReaders; // number of readers
Int_t fWriters; // number of writers
TMutex fMutex; // rwlock mutex
TCondition fLockFree; // rwlock condition variable
TRWLock(const TRWLock &); // not implemented
TRWLock& operator=(const TRWLock&); // not implemented
public:
TRWLock();
virtual ~TRWLock() { }
Int_t ReadLock();
Int_t ReadUnLock();
Int_t WriteLock();
Int_t WriteUnLock();
ClassDef(TRWLock,0) // Reader/writer lock
};
#endif
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