sim_events.cc (4167:ce5d0f62f13b) sim_events.cc (4762:c94e103c83ad)
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"
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/param.hh"
37#include "sim/sim_events.hh"
38#include "sim/sim_exit.hh"
39#include "sim/startup.hh"
40#include "sim/stats.hh"
41
42using namespace std;
43
44//
45// handle termination event
46//
47void
48SimLoopExitEvent::process()
49{
50 // if this got scheduled on a different queue (e.g. the committed
51 // instruction queue) then make a corresponding event on the main
52 // queue.
53 if (theQueue() != &mainEventQueue) {
54 exitSimLoop(cause, code);
55 delete this;
56 }
57
58 // otherwise do nothing... the IsExitEvent flag takes care of
59 // exiting the simulation loop and returning this object to Python
60
61 // but if you are doing this on intervals, don't forget to make another
62 if (repeat) {
63 schedule(curTick + repeat);
64 }
65}
66
67
68const char *
69SimLoopExitEvent::description()
70{
71 return "simulation loop exit";
72}
73
74SimLoopExitEvent *
75schedExitSimLoop(const std::string &message, Tick when, Tick repeat,
76 EventQueue *q, int exit_code)
77{
78 if (q == NULL)
79 q = &mainEventQueue;
80
81 return new SimLoopExitEvent(q, when, repeat, message, exit_code);
82}
83
84void
85exitSimLoop(const std::string &message, int exit_code)
86{
87 schedExitSimLoop(message, curTick, 0, NULL, exit_code);
88}
89
90void
91CountedDrainEvent::process()
92{
93 if (--count == 0) {
94 exitSimLoop("Finished drain");
95 }
96}
97
98//
99// constructor: automatically schedules at specified time
100//
101CountedExitEvent::CountedExitEvent(EventQueue *q, const std::string &_cause,
102 Tick _when, int &_downCounter)
103 : Event(q, Sim_Exit_Pri),
104 cause(_cause),
105 downCounter(_downCounter)
106{
107 // catch stupid mistakes
108 assert(downCounter > 0);
109
110 schedule(_when);
111}
112
113
114//
115// handle termination event
116//
117void
118CountedExitEvent::process()
119{
120 if (--downCounter == 0) {
121 exitSimLoop(cause, 0);
122 }
123}
124
125
126const char *
127CountedExitEvent::description()
128{
129 return "counted exit";
130}
131
132#ifdef CHECK_SWAP_CYCLES
133new CheckSwapEvent(&mainEventQueue, CHECK_SWAP_CYCLES);
134#endif
135
136void
137CheckSwapEvent::process()
138{
139 /* Check the amount of free swap space */
140 long swap;
141
142 /* returns free swap in KBytes */
143 swap = procInfo("/proc/meminfo", "SwapFree:");
144
145 if (swap < 1000)
146 ccprintf(cerr, "\a\a\aWarning! Swap space is low (%d)\n", swap);
147
148 if (swap < 100) {
149 cerr << "\a\aAborting Simulation! Inadequate swap space!\n\n";
150 exitSimLoop("Lack of swap space");
151 }
152
153 schedule(curTick + interval);
154}
155
156const char *
157CheckSwapEvent::description()
158{
159 return "check swap";
160}
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
43//
44// handle termination event
45//
46void
47SimLoopExitEvent::process()
48{
49 // if this got scheduled on a different queue (e.g. the committed
50 // instruction queue) then make a corresponding event on the main
51 // queue.
52 if (theQueue() != &mainEventQueue) {
53 exitSimLoop(cause, code);
54 delete this;
55 }
56
57 // otherwise do nothing... the IsExitEvent flag takes care of
58 // exiting the simulation loop and returning this object to Python
59
60 // but if you are doing this on intervals, don't forget to make another
61 if (repeat) {
62 schedule(curTick + repeat);
63 }
64}
65
66
67const char *
68SimLoopExitEvent::description()
69{
70 return "simulation loop exit";
71}
72
73SimLoopExitEvent *
74schedExitSimLoop(const std::string &message, Tick when, Tick repeat,
75 EventQueue *q, int exit_code)
76{
77 if (q == NULL)
78 q = &mainEventQueue;
79
80 return new SimLoopExitEvent(q, when, repeat, message, exit_code);
81}
82
83void
84exitSimLoop(const std::string &message, int exit_code)
85{
86 schedExitSimLoop(message, curTick, 0, NULL, exit_code);
87}
88
89void
90CountedDrainEvent::process()
91{
92 if (--count == 0) {
93 exitSimLoop("Finished drain");
94 }
95}
96
97//
98// constructor: automatically schedules at specified time
99//
100CountedExitEvent::CountedExitEvent(EventQueue *q, const std::string &_cause,
101 Tick _when, int &_downCounter)
102 : Event(q, Sim_Exit_Pri),
103 cause(_cause),
104 downCounter(_downCounter)
105{
106 // catch stupid mistakes
107 assert(downCounter > 0);
108
109 schedule(_when);
110}
111
112
113//
114// handle termination event
115//
116void
117CountedExitEvent::process()
118{
119 if (--downCounter == 0) {
120 exitSimLoop(cause, 0);
121 }
122}
123
124
125const char *
126CountedExitEvent::description()
127{
128 return "counted exit";
129}
130
131#ifdef CHECK_SWAP_CYCLES
132new CheckSwapEvent(&mainEventQueue, CHECK_SWAP_CYCLES);
133#endif
134
135void
136CheckSwapEvent::process()
137{
138 /* Check the amount of free swap space */
139 long swap;
140
141 /* returns free swap in KBytes */
142 swap = procInfo("/proc/meminfo", "SwapFree:");
143
144 if (swap < 1000)
145 ccprintf(cerr, "\a\a\aWarning! Swap space is low (%d)\n", swap);
146
147 if (swap < 100) {
148 cerr << "\a\aAborting Simulation! Inadequate swap space!\n\n";
149 exitSimLoop("Lack of swap space");
150 }
151
152 schedule(curTick + interval);
153}
154
155const char *
156CheckSwapEvent::description()
157{
158 return "check swap";
159}