2 * Copyright (c) 2002-2004 The Regents of The University of Michigan
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31 #include "base/callback.hh"
32 #include "base/hostinfo.hh"
33 #include "sim/eventq.hh"
34 #include "sim/param.hh"
35 #include "sim/sim_events.hh"
36 #include "sim/sim_exit.hh"
37 #include "sim/sim_init.hh"
38 #include "sim/stats.hh"
43 // handle termination event
46 SimExitEvent::process()
48 // This event does not autodelete because exitNow may be called,
49 // and the function will never be allowed to finish.
50 if (theQueue() == &mainEventQueue
) {
51 string _cause
= cause
;
54 exitNow(_cause
, _code
);
56 new SimExitEvent(cause
, code
);
63 SimExitEvent::description()
65 return "simulation termination";
69 // constructor: automatically schedules at specified time
71 CountedExitEvent::CountedExitEvent(EventQueue
*q
, const std::string
&_cause
,
72 Tick _when
, int &_downCounter
)
73 : Event(q
, Sim_Exit_Pri
),
75 downCounter(_downCounter
)
77 // catch stupid mistakes
78 assert(downCounter
> 0);
85 // handle termination event
88 CountedExitEvent::process()
90 if (--downCounter
== 0) {
91 new SimExitEvent(cause
, 0);
97 CountedExitEvent::description()
99 return "counted exit";
102 #ifdef CHECK_SWAP_CYCLES
103 new CheckSwapEvent(&mainEventQueue
, CHECK_SWAP_CYCLES
);
107 CheckSwapEvent::process()
109 /* Check the amount of free swap space */
112 /* returns free swap in KBytes */
113 swap
= procInfo("/proc/meminfo", "SwapFree:");
116 ccprintf(cerr
, "\a\a\aWarning! Swap space is low (%d)\n", swap
);
119 cerr
<< "\a\aAborting Simulation! Inadequate swap space!\n\n";
120 new SimExitEvent("Lack of swap space");
123 schedule(curTick
+ interval
);
127 CheckSwapEvent::description()
133 ///////////////////////////////////////////////////
135 // Simulation termination parameters
137 ///////////////////////////////////////////////////
139 class TermParamContext
: public ParamContext
142 TermParamContext(const string
&_iniSection
)
143 : ParamContext(_iniSection
) {}
147 TermParamContext
simTerminationParams("max");
149 Param
<Tick
> max_cycle(&simTerminationParams
, "cycle",
150 "maximum number of cycles to execute");
153 TermParamContext::checkParams()
155 // if a max cycle count was specified, put a termination event on
156 // the event queue at that point
157 if (max_cycle
.isValid())
158 new SimExitEvent(max_cycle
, "reached maximum cycle count");
162 // Progress event: print out cycle every so often so we know we're
163 // making forward progress.
165 class ProgressEvent
: public Event
171 ProgressEvent(EventQueue
*q
, Tick interval
);
173 void process(); // process event
174 virtual const char *description();
178 // constructor: schedule at specified time
180 ProgressEvent::ProgressEvent(EventQueue
*q
, Tick _interval
)
181 : Event(q
), interval(_interval
)
183 schedule(curTick
+ interval
);
187 // handle progress event: print message and reschedule
190 ProgressEvent::process()
192 DPRINTFN("ProgressEvent\n");
193 // reschedule for next interval
194 schedule(curTick
+ interval
);
199 ProgressEvent::description()
201 return "progress message";
206 // Periodic progress message support: print out a message every n
207 // cycles so we know we're making forward progress.
211 // Parameter space for execution address tracing options. Derive
212 // from ParamContext so we can override checkParams() function.
213 class ProgressParamContext
: public ParamContext
216 ProgressParamContext(const string
&_iniSection
)
217 : ParamContext(_iniSection
) {}
221 ProgressParamContext
progessMessageParams("progress");
223 Param
<Tick
> progress_interval(&progessMessageParams
, "cycle",
224 "cycle interval for progress messages");
227 struct SetupProgress
: public Callback
230 SetupProgress(Tick tick
) : interval(tick
) {}
232 virtual void process()
234 new ProgressEvent(&mainEventQueue
, interval
);
240 /* check execute options */
242 ProgressParamContext::checkParams()
244 if (progress_interval
.isValid())
245 registerInitCallback(new SetupProgress(progress_interval
));