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Ali Saidic0cf76c2006-05-29 18:24:27 -04001/*
2 * Copyright (c) 2006 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: Ali Saidi
29 */
30
31#ifndef __CPU_CPUEVENT_HH__
32#define __CPU_CPUEVENT_HH__
33
34#include <vector>
Nathan Binkert39a05562011-04-15 10:44:06 -070035
Ali Saidic0cf76c2006-05-29 18:24:27 -040036#include "sim/eventq.hh"
37
Kevin Limeb0e4162006-06-06 17:32:21 -040038class ThreadContext;
Ali Saidic0cf76c2006-05-29 18:24:27 -040039
Nathan Binkerte9a395c2007-01-03 10:13:45 -080040/**
41 * This class creates a global list of events that need a pointer to a
42 * thread context. When a switchover takes place the events can be
43 * migrated to the new thread context, otherwise you could have a wake
44 * timer interrupt go off on a switched out cpu or other unfortunate
45 * events. This object MUST be dynamically allocated to avoid it being
46 * deleted after a cpu switch happens.
47 */
Ali Saidic0cf76c2006-05-29 18:24:27 -040048class CpuEvent : public Event
49{
Gabe Black4a5cb3f2006-11-03 11:05:56 -050050 protected:
Ali Saidic0cf76c2006-05-29 18:24:27 -040051 /** type of global list of cpu events. */
52 typedef std::vector<CpuEvent *> CpuEventList;
53
54 /** Static list of cpu events that is searched every time a cpu switch
55 * happens. */
56 static CpuEventList cpuEventList;
57
Kevin Limeb0e4162006-06-06 17:32:21 -040058 /** The thread context that is switched to the new cpus. */
59 ThreadContext *tc;
Ali Saidic0cf76c2006-05-29 18:24:27 -040060
61 public:
Nathan Binkerte0632102008-10-09 04:58:24 -070062 CpuEvent(ThreadContext *_tc, Priority p = Default_Pri)
63 : Event(p), tc(_tc)
Ali Saidic0cf76c2006-05-29 18:24:27 -040064 { cpuEventList.push_back(this); }
65
66 /** delete the cpu event from the global list. */
67 ~CpuEvent();
68
Kevin Limeb0e4162006-06-06 17:32:21 -040069 /** Update all events switching old tc to new tc.
70 * @param oldTc the old thread context we are switching from
71 * @param newTc the new thread context we are switching to.
Ali Saidic0cf76c2006-05-29 18:24:27 -040072 */
Kevin Limeb0e4162006-06-06 17:32:21 -040073 static void replaceThreadContext(ThreadContext *oldTc,
74 ThreadContext *newTc);
Ali Saidifc79ace2007-01-30 18:25:39 -050075 ThreadContext* getTC() { return tc; }
Ali Saidic0cf76c2006-05-29 18:24:27 -040076};
77
Kevin Limeb0e4162006-06-06 17:32:21 -040078template <class T, void (T::* F)(ThreadContext *tc)>
Ali Saidic0cf76c2006-05-29 18:24:27 -040079class CpuEventWrapper : public CpuEvent
80{
81 private:
82 T *object;
83
84 public:
Nathan Binkerte0632102008-10-09 04:58:24 -070085 CpuEventWrapper(T *obj, ThreadContext *_tc, Priority p = Default_Pri)
86 : CpuEvent(_tc, p), object(obj)
Ali Saidic0cf76c2006-05-29 18:24:27 -040087 { }
Kevin Limeb0e4162006-06-06 17:32:21 -040088 void process() { (object->*F)(tc); }
Ali Saidic0cf76c2006-05-29 18:24:27 -040089};
90
91#endif // __CPU_CPUEVENT_HH__
92