sim_events.cc (5606:6da7a58b0bc8) sim_events.cc (7492:acc1fbbef239)
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#include <string>
32
33#include "base/callback.hh"
34#include "base/hostinfo.hh"
35#include "sim/eventq.hh"
36#include "sim/sim_events.hh"
37#include "sim/sim_exit.hh"
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#include <string>
32
33#include "base/callback.hh"
34#include "base/hostinfo.hh"
35#include "sim/eventq.hh"
36#include "sim/sim_events.hh"
37#include "sim/sim_exit.hh"
38#include "sim/startup.hh"
39#include "sim/stats.hh"
40
41using namespace std;
42
43SimLoopExitEvent::SimLoopExitEvent(const std::string &_cause, int c, Tick r)
44 : Event(Sim_Exit_Pri), cause(_cause), code(c), repeat(r)
45{
46 setFlags(IsExitEvent);
47}
48
49
50//
51// handle termination event
52//
53void
54SimLoopExitEvent::process()
55{
56 // if this got scheduled on a different queue (e.g. the committed
57 // instruction queue) then make a corresponding event on the main
58 // queue.
59 if (!getFlags(IsMainQueue)) {
60 exitSimLoop(cause, code);
61 delete this;
62 }
63
64 // otherwise do nothing... the IsExitEvent flag takes care of
65 // exiting the simulation loop and returning this object to Python
66
67 // but if you are doing this on intervals, don't forget to make another
68 if (repeat) {
69 assert(getFlags(IsMainQueue));
70 mainEventQueue.schedule(this, curTick + repeat);
71 }
72}
73
74
75const char *
76SimLoopExitEvent::description() const
77{
78 return "simulation loop exit";
79}
80
81void
82exitSimLoop(const std::string &message, int exit_code)
83{
84 Event *event = new SimLoopExitEvent(message, exit_code);
85 mainEventQueue.schedule(event, curTick);
86}
87
88CountedDrainEvent::CountedDrainEvent()
89 : SimLoopExitEvent("Finished drain", 0), count(0)
90{ }
91
92void
93CountedDrainEvent::process()
94{
95 if (--count == 0)
96 exitSimLoop(cause, code);
97}
98
99//
100// constructor: automatically schedules at specified time
101//
102CountedExitEvent::CountedExitEvent(const std::string &_cause, int &counter)
103 : Event(Sim_Exit_Pri), cause(_cause), downCounter(counter)
104{
105 // catch stupid mistakes
106 assert(downCounter > 0);
107}
108
109
110//
111// handle termination event
112//
113void
114CountedExitEvent::process()
115{
116 if (--downCounter == 0) {
117 exitSimLoop(cause, 0);
118 }
119}
120
121
122const char *
123CountedExitEvent::description() const
124{
125 return "counted exit";
126}
127
128CheckSwapEvent::CheckSwapEvent(int ival)
129 : interval(ival)
130{
131 mainEventQueue.schedule(this, curTick + interval);
132}
133
134void
135CheckSwapEvent::process()
136{
137 /* Check the amount of free swap space */
138 long swap;
139
140 /* returns free swap in KBytes */
141 swap = procInfo("/proc/meminfo", "SwapFree:");
142
143 if (swap < 1000)
144 ccprintf(cerr, "\a\a\aWarning! Swap space is low (%d)\n", swap);
145
146 if (swap < 100) {
147 cerr << "\a\aAborting Simulation! Inadequate swap space!\n\n";
148 exitSimLoop("Lack of swap space");
149 }
150
151 assert(getFlags(IsMainQueue));
152 mainEventQueue.schedule(this, curTick + interval);
153}
154
155const char *
156CheckSwapEvent::description() const
157{
158 return "check swap";
159}
38#include "sim/stats.hh"
39
40using namespace std;
41
42SimLoopExitEvent::SimLoopExitEvent(const std::string &_cause, int c, Tick r)
43 : Event(Sim_Exit_Pri), cause(_cause), code(c), repeat(r)
44{
45 setFlags(IsExitEvent);
46}
47
48
49//
50// handle termination event
51//
52void
53SimLoopExitEvent::process()
54{
55 // if this got scheduled on a different queue (e.g. the committed
56 // instruction queue) then make a corresponding event on the main
57 // queue.
58 if (!getFlags(IsMainQueue)) {
59 exitSimLoop(cause, code);
60 delete this;
61 }
62
63 // otherwise do nothing... the IsExitEvent flag takes care of
64 // exiting the simulation loop and returning this object to Python
65
66 // but if you are doing this on intervals, don't forget to make another
67 if (repeat) {
68 assert(getFlags(IsMainQueue));
69 mainEventQueue.schedule(this, curTick + repeat);
70 }
71}
72
73
74const char *
75SimLoopExitEvent::description() const
76{
77 return "simulation loop exit";
78}
79
80void
81exitSimLoop(const std::string &message, int exit_code)
82{
83 Event *event = new SimLoopExitEvent(message, exit_code);
84 mainEventQueue.schedule(event, curTick);
85}
86
87CountedDrainEvent::CountedDrainEvent()
88 : SimLoopExitEvent("Finished drain", 0), count(0)
89{ }
90
91void
92CountedDrainEvent::process()
93{
94 if (--count == 0)
95 exitSimLoop(cause, code);
96}
97
98//
99// constructor: automatically schedules at specified time
100//
101CountedExitEvent::CountedExitEvent(const std::string &_cause, int &counter)
102 : Event(Sim_Exit_Pri), cause(_cause), downCounter(counter)
103{
104 // catch stupid mistakes
105 assert(downCounter > 0);
106}
107
108
109//
110// handle termination event
111//
112void
113CountedExitEvent::process()
114{
115 if (--downCounter == 0) {
116 exitSimLoop(cause, 0);
117 }
118}
119
120
121const char *
122CountedExitEvent::description() const
123{
124 return "counted exit";
125}
126
127CheckSwapEvent::CheckSwapEvent(int ival)
128 : interval(ival)
129{
130 mainEventQueue.schedule(this, curTick + interval);
131}
132
133void
134CheckSwapEvent::process()
135{
136 /* Check the amount of free swap space */
137 long swap;
138
139 /* returns free swap in KBytes */
140 swap = procInfo("/proc/meminfo", "SwapFree:");
141
142 if (swap < 1000)
143 ccprintf(cerr, "\a\a\aWarning! Swap space is low (%d)\n", swap);
144
145 if (swap < 100) {
146 cerr << "\a\aAborting Simulation! Inadequate swap space!\n\n";
147 exitSimLoop("Lack of swap space");
148 }
149
150 assert(getFlags(IsMainQueue));
151 mainEventQueue.schedule(this, curTick + interval);
152}
153
154const char *
155CheckSwapEvent::description() const
156{
157 return "check swap";
158}