sim_events.hh revision 2665 
1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 */
30
31#ifndef __SIM_SIM_EVENTS_HH__
32#define __SIM_SIM_EVENTS_HH__
33
34#include "sim/eventq.hh"
35
36//
37// Event to terminate simulation at a particular cycle/instruction
38//
39class SimExitEvent : public Event
40{
41  private:
42    // string explaining why we're terminating
43    std::string cause;
44    int code;
45
46  public:
47    SimExitEvent(const std::string &_cause, int c = 0)
48        : Event(&mainEventQueue, Sim_Exit_Pri), cause(_cause),
49          code(c)
50        { schedule(curTick); }
51
52    SimExitEvent(Tick _when, const std::string &_cause, int c = 0)
53        : Event(&mainEventQueue, Sim_Exit_Pri), cause(_cause),
54          code(c)
55        { schedule(_when); }
56
57    SimExitEvent(EventQueue *q, const std::string &_cause, int c = 0)
58        : Event(q, Sim_Exit_Pri), cause(_cause), code(c)
59        { schedule(curTick); }
60
61    SimExitEvent(EventQueue *q, Tick _when, const std::string &_cause,
62                 int c = 0)
63        : Event(q, Sim_Exit_Pri), cause(_cause), code(c)
64        { schedule(_when); }
65
66    void process();	// process event
67
68    virtual const char *description();
69};
70
71//
72// Event class to terminate simulation after 'n' related events have
73// occurred using a shared counter: used to terminate when *all*
74// threads have reached a particular instruction count
75//
76class CountedExitEvent : public Event
77{
78  private:
79    std::string cause;	// string explaining why we're terminating
80    int &downCounter;	// decrement & terminate if zero
81
82  public:
83    CountedExitEvent(EventQueue *q, const std::string &_cause,
84                     Tick _when, int &_downCounter);
85
86    void process();	// process event
87
88    virtual const char *description();
89};
90
91//
92// Event to check swap usage
93//
94class CheckSwapEvent : public Event
95{
96  private:
97    int interval;
98
99  public:
100    CheckSwapEvent(EventQueue *q, int ival)
101        : Event(q), interval(ival)
102    { schedule(curTick + interval); }
103
104    void process();	// process event
105
106    virtual const char *description();
107};
108
109//
110// Progress event: print out cycle every so often so we know we're
111// making forward progress.
112//
113class ProgressEvent : public Event
114{
115  protected:
116    Tick interval;
117
118  public:
119    ProgressEvent(EventQueue *q, Tick ival)
120        : Event(q), interval(ival)
121    { schedule(curTick + interval); }
122
123    void process();	// process event
124
125    virtual const char *description();
126};
127
128#endif  // __SIM_SIM_EVENTS_HH__
129