rnglock.h
//
// rnglock.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_rnglock_h
#define _util_group_rnglock_h
#include <iostream>
#include <util/misc/exenv.h>
namespace sc {
class Pool;
class RangeLockItem {
public:
RangeLockItem *prev;
RangeLockItem *next;
int start;
int fence;
int value;
RangeLockItem(RangeLockItem *p, RangeLockItem *n, int s, int f, int v):
prev(p), next(n), start(s), fence(f), value(v) {}
~RangeLockItem() {};
static void *operator new(size_t, Pool *);
static void operator delete(void *, Pool *);
};
class RangeLockValOp;
class RangeLock {
private:
RangeLockItem *root_;
Pool *pool_;
void split_ranges(int start, int fence);
void do_valop(RangeLockValOp&, int start, int fence);
public:
RangeLock(Pool *pool = 0);
~RangeLock();
void increment(int start, int fence);
void decrement(int start, int fence);
void set(int start, int fence, int value);
void sum(int start, int fence, int delta);
// check for anything within a range to be equal to a value
int checkeq(int start, int fence, int value);
// check for anything within a range to be greater than a value
int checkgr(int start, int fence, int value);
void check();
void print(std::ostream &o = ExEnv::out0()) const;
int lockvalue(int i);
};
}
#endif
// Local Variables:
// mode: c++
// c-file-style: "CLJ"
// End: