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 SimLoopExitEvent : public Event
40{
41 private:
42 // string explaining why we're terminating
43 std::string cause;
44 int code;
45
46 public:
47 // Default constructor. Only really used for derived classes.
48 SimLoopExitEvent()
49 : Event(&mainEventQueue, Sim_Exit_Pri)
50 { }
51
52 SimLoopExitEvent(Tick _when, const std::string &_cause, int c = 0)
53 : Event(&mainEventQueue, Sim_Exit_Pri), cause(_cause),
54 code(c)
55 { setFlags(IsExitEvent); schedule(_when); }
56
57 SimLoopExitEvent(EventQueue *q,
58 Tick _when, const std::string &_cause, int c = 0)
59 : Event(q, Sim_Exit_Pri), cause(_cause), code(c)
60 { setFlags(IsExitEvent); schedule(_when); }
61
62 std::string getCause() { return cause; }
63 int getCode() { return code; }
64
65 void process(); // process event
66
67 virtual const char *description();
68};
69
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77 : count(0)
78 { }
79 void process();
80
81 void setCount(int _count) { count = _count; }
82
83 int getCount() { return count; }
84};
85
86//
87// Event class to terminate simulation after 'n' related events have
88// occurred using a shared counter: used to terminate when *all*
89// threads have reached a particular instruction count
90//
91class CountedExitEvent : public Event
92{
93 private:
94 std::string cause; // string explaining why we're terminating
95 int &downCounter; // decrement & terminate if zero
96
97 public:
98 CountedExitEvent(EventQueue *q, const std::string &_cause,
99 Tick _when, int &_downCounter);
100
101 void process(); // process event
102
103 virtual const char *description();
104};
105
106//
107// Event to check swap usage
108//
109class CheckSwapEvent : public Event
110{
111 private:
112 int interval;
113
114 public:
115 CheckSwapEvent(EventQueue *q, int ival)
116 : Event(q), interval(ival)
117 { schedule(curTick + interval); }
118
119 void process(); // process event
120
121 virtual const char *description();
122};
123
124//
125// Progress event: print out cycle every so often so we know we're
126// making forward progress.
127//
128class ProgressEvent : public Event
129{
130 protected:
131 Tick interval;
132
133 public:
134 ProgressEvent(EventQueue *q, Tick ival)
135 : Event(q), interval(ival)
136 { schedule(curTick + interval); }
137
138 void process(); // process event
139
140 virtual const char *description();
141};
142
143#endif // __SIM_SIM_EVENTS_HH__
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