Consumer.hh revision 7002 
1
2/*
3 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/*
31 * $Id$
32 *
33 * Description: This is the virtual base class of all classes that can
34 * be the targets of wakeup events.  There is only two methods,
35 * wakeup() and print() and no data members.
36 *
37 */
38
39#ifndef CONSUMER_H
40#define CONSUMER_H
41
42#include <iostream>
43
44#include "mem/ruby/common/Global.hh"
45#include "mem/ruby/eventqueue/RubyEventQueue.hh"
46
47class MessageBuffer;
48
49class Consumer {
50public:
51  // Constructors
52  Consumer() { m_last_scheduled_wakeup = 0; m_last_wakeup = 0; }
53
54  // Destructor
55  virtual ~Consumer() { }
56
57  // Public Methods - pure virtual methods
58  // void triggerWakeup() { Time time = g_eventQueue_ptr->getTime(); if (m_last_wakeup != time) { wakeup(); m_last_wakeup = time; }}
59  void triggerWakeup(RubyEventQueue * eventQueue) { Time time = eventQueue->getTime(); if (m_last_wakeup != time) { wakeup(); m_last_wakeup = time; }}
60  virtual void wakeup() = 0;
61  virtual void print(std::ostream& out) const = 0;
62  const Time& getLastScheduledWakeup() const { return m_last_scheduled_wakeup; }
63  void setLastScheduledWakeup(const Time& time) { m_last_scheduled_wakeup = time; }
64
65private:
66  // Private Methods
67
68  // Data Members (m_ prefix)
69  Time m_last_scheduled_wakeup;
70  Time m_last_wakeup;
71};
72
73// Output operator declaration
74inline extern
75std::ostream& operator<<(std::ostream& out, const Consumer& obj);
76
77// ******************* Definitions *******************
78
79// Output operator definition
80inline extern
81std::ostream& operator<<(std::ostream& out, const Consumer& obj)
82{
83  obj.print(out);
84  out << std::flush;
85  return out;
86}
87
88#endif //CONSUMER_H
89