2 * Copyright (c) 2003 The Regents of The University of Michigan
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31 #include "sim/param.hh"
32 #include "sim/eventq.hh"
33 #include "base/hostinfo.hh"
34 #include "sim/sim_events.hh"
35 #include "sim/sim_exit.hh"
36 #include "sim/sim_stats.hh"
41 // handle termination event
44 SimExitEvent::process()
46 // This event does not autodelete because exitNow may be called,
47 // and the function will never be allowed to finish.
48 if (theQueue() == &mainEventQueue
) {
49 string _cause
= cause
;
52 exitNow(_cause
, _code
);
54 new SimExitEvent(cause
, code
);
61 SimExitEvent::description()
63 return "simulation termination";
67 // constructor: automatically schedules at specified time
69 CountedExitEvent::CountedExitEvent(EventQueue
*q
, const std::string
&_cause
,
70 Tick _when
, int &_downCounter
)
71 : Event(q
, Sim_Exit_Pri
),
73 downCounter(_downCounter
)
75 // catch stupid mistakes
76 assert(downCounter
> 0);
83 // handle termination event
86 CountedExitEvent::process()
88 if (--downCounter
== 0) {
89 new SimExitEvent(cause
, 0);
95 CountedExitEvent::description()
97 return "counted exit";
100 #ifdef CHECK_SWAP_CYCLES
101 new CheckSwapEvent(&mainEventQueue
, CHECK_SWAP_CYCLES
);
105 CheckSwapEvent::process()
107 /* Check the amount of free swap space */
110 /* returns free swap in KBytes */
111 swap
= procInfo("/proc/meminfo", "SwapFree:");
114 ccprintf(cerr
, "\a\a\aWarning! Swap space is low (%d)\n", swap
);
117 cerr
<< "\a\aAborting Simulation! Inadequate swap space!\n\n";
118 new SimExitEvent("Lack of swap space");
121 schedule(curTick
+ interval
);
125 CheckSwapEvent::description()
131 ///////////////////////////////////////////////////
133 // Simulation termination parameters
135 ///////////////////////////////////////////////////
137 class TermParamContext
: public ParamContext
140 TermParamContext(const string
&_iniSection
)
141 : ParamContext(_iniSection
) {}
145 TermParamContext
simTerminationParams("max");
147 Param
<Tick
> max_cycle(&simTerminationParams
, "cycle",
148 "maximum number of cycles to execute");
151 TermParamContext::checkParams()
153 // if a max cycle count was specified, put a termination event on
154 // the event queue at that point
155 if (max_cycle
.isValid())
156 new SimExitEvent(max_cycle
, "reached maximum cycle count");
160 // Progress event: print out cycle every so often so we know we're
161 // making forward progress.
163 class ProgressEvent
: public Event
169 ProgressEvent(EventQueue
*q
, Tick interval
);
171 void process(); // process event
172 virtual const char *description();
176 // constructor: schedule at specified time
178 ProgressEvent::ProgressEvent(EventQueue
*q
, Tick _interval
)
179 : Event(q
), interval(_interval
)
185 // handle progress event: print message and reschedule
188 ProgressEvent::process()
190 DPRINTFN("ProgressEvent\n");
191 // reschedule for next interval
192 schedule(curTick
+ interval
);
197 ProgressEvent::description()
199 return "progress message";
204 // Periodic progress message support: print out a message every n
205 // cycles so we know we're making forward progress.
209 // Parameter space for execution address tracing options. Derive
210 // from ParamContext so we can override checkParams() function.
211 class ProgressParamContext
: public ParamContext
214 ProgressParamContext(const string
&_iniSection
)
215 : ParamContext(_iniSection
) {}
219 ProgressParamContext
progessMessageParams("progress");
221 Param
<Tick
> progress_interval(&progessMessageParams
, "cycle",
222 "cycle interval for progress messages");
224 /* check execute options */
226 ProgressParamContext::checkParams()
228 if (progress_interval
.isValid())
229 new ProgressEvent(&mainEventQueue
, progress_interval
);