globcnt.h
//
// globcnt.h
//
// Copyright (C) 1996 Limit Point Systems, Inc.
//
// Author: Curtis Janssen <cljanss@limitpt.com>
// Maintainer: LPS
//
// This file is part of the SC Toolkit.
//
// The SC Toolkit is free software; you can redistribute it and/or modify
// it under the terms of the GNU Library General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// The SC Toolkit is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public License
// along with the SC Toolkit; see the file COPYING.LIB. If not, write to
// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
//
// The U.S. Government is granted a limited license as per AL 91-7.
//
#ifdef __GNUC__
#pragma interface
#endif
#ifndef _util_group_globcnt_h
#define _util_group_globcnt_h
namespace sc {
// A process can create a GlobalCounter using the void CTOR.
// This process can share the string representation of the
// counter with other processes. They can then use the const
// char * CTOR to create global counters that reference the
// same global counter.
class GlobalCounter {
private:
int semid_;
int controls_release_;
void cleanup();
public:
GlobalCounter();
void initialize();
void initialize(const char *stringrep);
~GlobalCounter();
char *stringrep();
void wait_for_zero();
void operator += (int);
void operator ++();
void operator --();
void operator ++(int) { operator++(); }
void operator --(int) { operator--(); }
void operator = (int);
int val();
};
}
#endif
// Local Variables:
// mode: c++
// c-file-style: "CLJ"
// End: