1/* 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; --- 20 unchanged lines hidden (view full) --- 29 */ 30 31#ifndef __CPU_CPUEVENT_HH__ 32#define __CPU_CPUEVENT_HH__ 33 34#include <vector> 35#include "sim/eventq.hh" 36 |
37class ThreadContext; |
38 39/** This class creates a global list of events than need a pointer to an |
40 * thread context. When a switchover takes place the events can be migrated 41 * to the new thread context, otherwise you could have a wake timer interrupt |
42 * go off on a switched out cpu or other unfortunate events. This object MUST be 43 * dynamically allocated to avoid it being deleted after a cpu switch happens. 44 * */ 45class CpuEvent : public Event 46{ 47 private: 48 /** type of global list of cpu events. */ 49 typedef std::vector<CpuEvent *> CpuEventList; 50 51 /** Static list of cpu events that is searched every time a cpu switch 52 * happens. */ 53 static CpuEventList cpuEventList; 54 |
55 /** The thread context that is switched to the new cpus. */ 56 ThreadContext *tc; |
57 58 public: |
59 CpuEvent(EventQueue *q, ThreadContext *_tc, Priority p = Default_Pri) 60 : Event(q, p), tc(_tc) |
61 { cpuEventList.push_back(this); } 62 63 /** delete the cpu event from the global list. */ 64 ~CpuEvent(); 65 |
66 /** Update all events switching old tc to new tc. 67 * @param oldTc the old thread context we are switching from 68 * @param newTc the new thread context we are switching to. |
69 */ |
70 static void replaceThreadContext(ThreadContext *oldTc, 71 ThreadContext *newTc); |
72}; 73 |
74template <class T, void (T::* F)(ThreadContext *tc)> |
75class CpuEventWrapper : public CpuEvent 76{ 77 private: 78 T *object; 79 80 public: |
81 CpuEventWrapper(T *obj, ThreadContext *_tc, EventQueue *q = &mainEventQueue, |
82 Priority p = Default_Pri) |
83 : CpuEvent(q, _tc, p), object(obj) |
84 { } |
85 void process() { (object->*F)(tc); } |
86}; 87 88#endif // __CPU_CPUEVENT_HH__ 89 |