2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
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
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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.
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
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26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Authors: Nathan Binkert
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"
45 // handle termination event
48 SimLoopExitEvent::process()
50 // if this got scheduled on a different queue (e.g. the committed
51 // instruction queue) then make a corresponding event on the main
53 if (theQueue() != &mainEventQueue
) {
54 exitSimLoop(cause
, code
);
58 // otherwise do nothing... the IsExitEvent flag takes care of
59 // exiting the simulation loop and returning this object to Python
61 // but if you are doing this on intervals, don't forget to make another
63 schedule(curTick
+ repeat
);
69 SimLoopExitEvent::description()
71 return "simulation loop exit";
75 schedExitSimLoop(const std::string
&message
, Tick when
, Tick repeat
,
76 EventQueue
*q
, int exit_code
)
81 return new SimLoopExitEvent(q
, when
, repeat
, message
, exit_code
);
85 exitSimLoop(const std::string
&message
, int exit_code
)
87 schedExitSimLoop(message
, curTick
, 0, NULL
, exit_code
);
91 CountedDrainEvent::process()
94 exitSimLoop("Finished drain");
99 // constructor: automatically schedules at specified time
101 CountedExitEvent::CountedExitEvent(EventQueue
*q
, const std::string
&_cause
,
102 Tick _when
, int &_downCounter
)
103 : Event(q
, Sim_Exit_Pri
),
105 downCounter(_downCounter
)
107 // catch stupid mistakes
108 assert(downCounter
> 0);
115 // handle termination event
118 CountedExitEvent::process()
120 if (--downCounter
== 0) {
121 exitSimLoop(cause
, 0);
127 CountedExitEvent::description()
129 return "counted exit";
132 #ifdef CHECK_SWAP_CYCLES
133 new CheckSwapEvent(&mainEventQueue
, CHECK_SWAP_CYCLES
);
137 CheckSwapEvent::process()
139 /* Check the amount of free swap space */
142 /* returns free swap in KBytes */
143 swap
= procInfo("/proc/meminfo", "SwapFree:");
146 ccprintf(cerr
, "\a\a\aWarning! Swap space is low (%d)\n", swap
);
149 cerr
<< "\a\aAborting Simulation! Inadequate swap space!\n\n";
150 exitSimLoop("Lack of swap space");
153 schedule(curTick
+ interval
);
157 CheckSwapEvent::description()
163 // handle progress event: print message and reschedule
166 ProgressEvent::process()
168 DPRINTFN("ProgressEvent\n");
169 // reschedule for next interval
170 schedule(curTick
+ interval
);
175 ProgressEvent::description()
177 return "progress message";