MPQC  3.0.0-alpha
rnglock.h
1 //
2 // rnglock.h
3 //
4 // Copyright (C) 1996 Limit Point Systems, Inc.
5 //
6 // Author: Curtis Janssen <cljanss@limitpt.com>
7 // Maintainer: LPS
8 //
9 // This file is part of the SC Toolkit.
10 //
11 // The SC Toolkit is free software; you can redistribute it and/or modify
12 // it under the terms of the GNU Library General Public License as published by
13 // the Free Software Foundation; either version 2, or (at your option)
14 // any later version.
15 //
16 // The SC Toolkit is distributed in the hope that it will be useful,
17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 // GNU Library General Public License for more details.
20 //
21 // You should have received a copy of the GNU Library General Public License
22 // along with the SC Toolkit; see the file COPYING.LIB. If not, write to
23 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
24 //
25 // The U.S. Government is granted a limited license as per AL 91-7.
26 //
27 
28 #ifndef _util_group_rnglock_h
29 #define _util_group_rnglock_h
30 
31 #include <iostream>
32 
33 #include <util/misc/exenv.h>
34 
35 namespace sc {
36 
37 class Pool;
38 
40  public:
41  RangeLockItem *prev;
42  RangeLockItem *next;
43  int start;
44  int fence;
45  int value;
46  RangeLockItem(RangeLockItem *p, RangeLockItem *n, int s, int f, int v):
47  prev(p), next(n), start(s), fence(f), value(v) {}
48  ~RangeLockItem() {};
49 
50  static void *operator new(size_t, Pool *);
51  static void operator delete(void *, Pool *);
52 };
53 
54 class RangeLockValOp;
55 class RangeLock {
56  private:
57  RangeLockItem *root_;
58  Pool *pool_;
59 
60  void split_ranges(int start, int fence);
61  void do_valop(RangeLockValOp&, int start, int fence);
62  public:
63  RangeLock(Pool *pool = 0);
64  ~RangeLock();
65 
66  void increment(int start, int fence);
67  void decrement(int start, int fence);
68  void set(int start, int fence, int value);
69  void sum(int start, int fence, int delta);
70 
71  // check for anything within a range to be equal to a value
72  int checkeq(int start, int fence, int value);
73  // check for anything within a range to be greater than a value
74  int checkgr(int start, int fence, int value);
75 
76  void check();
77  void print(std::ostream &o = ExEnv::out0()) const;
78 
79  int lockvalue(int i);
80 };
81 
82 }
83 
84 #endif
85 
86 // Local Variables:
87 // mode: c++
88 // c-file-style: "CLJ"
89 // End:
sc::RangeLock
Definition: rnglock.h:55
sc::Pool
Definition: pool.h:262
sc::RangeLockItem
Definition: rnglock.h:39
sc::ExEnv::out0
static std::ostream & out0()
Return an ostream that writes from node 0.
sc
Contains all MPQC code up to version 3.
Definition: mpqcin.h:14

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