1/*****************************************************************************
2
3  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
4  more contributor license agreements.  See the NOTICE file distributed
5  with this work for additional information regarding copyright ownership.
6  Accellera licenses this file to you under the Apache License, Version 2.0
7  (the "License"); you may not use this file except in compliance with the
8  License.  You may obtain a copy of the License at
9
10    http://www.apache.org/licenses/LICENSE-2.0
11
12  Unless required by applicable law or agreed to in writing, software
13  distributed under the License is distributed on an "AS IS" BASIS,
14  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
15  implied.  See the License for the specific language governing
16  permissions and limitations under the License.
17
18 *****************************************************************************/
19
20/*****************************************************************************
21
22  sc_semaphore_if.h -- The sc_semaphore_if interface class.
23
24  Original Author: Martin Janssen, Synopsys, Inc., 2001-05-21
25
26  CHANGE LOG IS AT THE END OF THE FILE
27 *****************************************************************************/
28
29#ifndef SC_SEMAPHORE_IF_H
30#define SC_SEMAPHORE_IF_H
31
32#include "sysc/communication/sc_interface.h"
33
34namespace sc_core {
35
36// ----------------------------------------------------------------------------
37//  CLASS : sc_semaphore_if
38//
39//  The sc_semaphore_if interface class.
40// ----------------------------------------------------------------------------
41
42class sc_semaphore_if
43: virtual public sc_interface
44{
45public:
46
47    // the classical operations: wait(), trywait(), and post()
48
49    // lock (take) the semaphore, block if not available
50    virtual int wait() = 0;
51
52    // lock (take) the semaphore, return -1 if not available
53    virtual int trywait() = 0;
54
55    // unlock (give) the semaphore
56    virtual int post() = 0;
57
58    // get the value of the semphore
59    virtual int get_value() const = 0;
60
61protected:
62
63    // constructor
64
65    sc_semaphore_if()
66	{}
67
68private:
69
70    // disabled
71    sc_semaphore_if( const sc_semaphore_if& );
72    sc_semaphore_if& operator = ( const sc_semaphore_if& );
73};
74
75} // namespace sc_core
76
77//$Log: sc_semaphore_if.h,v $
78//Revision 1.3  2011/08/26 20:45:42  acg
79// Andy Goodrich: moved the modification log to the end of the file to
80// eliminate source line number skew when check-ins are done.
81//
82//Revision 1.2  2011/02/18 20:23:45  acg
83// Andy Goodrich: Copyright update.
84//
85//Revision 1.1.1.1  2006/12/15 20:20:04  acg
86//SystemC 2.3
87//
88//Revision 1.2  2006/01/03 23:18:26  acg
89//Changed copyright to include 2006.
90//
91//Revision 1.1.1.1  2005/12/19 23:16:43  acg
92//First check in of SystemC 2.1 into its own archive.
93//
94//Revision 1.8  2005/06/10 22:43:55  acg
95//Added CVS change log annotation.
96//
97
98#endif
99
100// Taf!
101