2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
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6 * modification, are permitted provided that the following conditions are
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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
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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/sim_events.hh"
37 #include "sim/sim_exit.hh"
38 #include "sim/startup.hh"
39 #include "sim/stats.hh"
43 SimLoopExitEvent::SimLoopExitEvent(const std::string
&_cause
, int c
, Tick r
)
44 : Event(Sim_Exit_Pri
), cause(_cause
), code(c
), repeat(r
)
46 setFlags(IsExitEvent
);
51 // handle termination event
54 SimLoopExitEvent::process()
56 // if this got scheduled on a different queue (e.g. the committed
57 // instruction queue) then make a corresponding event on the main
59 if (!getFlags(IsMainQueue
)) {
60 exitSimLoop(cause
, code
);
64 // otherwise do nothing... the IsExitEvent flag takes care of
65 // exiting the simulation loop and returning this object to Python
67 // but if you are doing this on intervals, don't forget to make another
69 assert(getFlags(IsMainQueue
));
70 mainEventQueue
.schedule(this, curTick
+ repeat
);
76 SimLoopExitEvent::description() const
78 return "simulation loop exit";
82 exitSimLoop(const std::string
&message
, int exit_code
)
84 Event
*event
= new SimLoopExitEvent(message
, exit_code
);
85 mainEventQueue
.schedule(event
, curTick
);
88 CountedDrainEvent::CountedDrainEvent()
89 : SimLoopExitEvent("Finished drain", 0), count(0)
93 CountedDrainEvent::process()
96 exitSimLoop(cause
, code
);
100 // constructor: automatically schedules at specified time
102 CountedExitEvent::CountedExitEvent(const std::string
&_cause
, int &counter
)
103 : Event(Sim_Exit_Pri
), cause(_cause
), downCounter(counter
)
105 // catch stupid mistakes
106 assert(downCounter
> 0);
111 // handle termination event
114 CountedExitEvent::process()
116 if (--downCounter
== 0) {
117 exitSimLoop(cause
, 0);
123 CountedExitEvent::description() const
125 return "counted exit";
128 CheckSwapEvent::CheckSwapEvent(int ival
)
131 mainEventQueue
.schedule(this, curTick
+ interval
);
135 CheckSwapEvent::process()
137 /* Check the amount of free swap space */
140 /* returns free swap in KBytes */
141 swap
= procInfo("/proc/meminfo", "SwapFree:");
144 ccprintf(cerr
, "\a\a\aWarning! Swap space is low (%d)\n", swap
);
147 cerr
<< "\a\aAborting Simulation! Inadequate swap space!\n\n";
148 exitSimLoop("Lack of swap space");
151 assert(getFlags(IsMainQueue
));
152 mainEventQueue
.schedule(this, curTick
+ interval
);
156 CheckSwapEvent::description() const