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/* -*- mode: C++; tab-width: 4 -*- */
/* ================================================================================== */
/* Copyright (c) 1998-1999 3Com Corporation or its subsidiaries. All rights reserved. */
/* ================================================================================== */
#ifndef __CPU_MT_H__
#define __CPU_MT_H__
#include "ErrorHandling.h" // ErrCode
#include "omnithread.h" // omni_thread
#include "Platform_Files.h" // FileReference
#include "Skins.h" // SkinElement
enum { kStopManually = 1, kStopOnADime, kStopOnATrap };
enum { kStateStopped, kStateWaitingToStart, kStateRunning, kStateStopRequested };
class CPU : public omni_thread
{
public:
// -----------------------------------------------------------------------------
// constructor / destructor
// -----------------------------------------------------------------------------
CPU (void);
virtual ~CPU (void);
// -----------------------------------------------------------------------------
// public methods
// -----------------------------------------------------------------------------
void CreateThread (void);
void DestroyThread (void);
void StartThread (void);
void StopThread (Bool& wasStopped, Bool& isStopped, int how);
void Sleep (long timeout);
private:
// -----------------------------------------------------------------------------
// private methods
// -----------------------------------------------------------------------------
void MSecsToSecsNSecs(long msecs, unsigned long& secs, unsigned long& nsecs);
// -----------------------------------------------------------------------------
// omni_thread overrides
// -----------------------------------------------------------------------------
virtual void* run_undetached (void* arg);
// -----------------------------------------------------------------------------
// private data members
// -----------------------------------------------------------------------------
omni_mutex fRunMutex;
omni_condition fRunCondition;
omni_mutex fStopMutex;
omni_condition fStopCondition;
omni_mutex fSleepMutex;
omni_condition fSleepCondition;
Bool fRunning; // Protected by fStopMutex. Note that having fRunMutex
// acquired will also protect fRunning, as that implies
// the CPU thread is stopped.
Bool fStopRequest; // Protected by fRunMutex (except for end of CPU::Stop).
Bool fQuitRequest; // Protected by fRunMutex.
};
// -----------------------------------------------------------------------------
// Stack object which is used to briefly stop the emulator:
// -----------------------------------------------------------------------------
class CPUStopper
{
public:
CPUStopper (int how);
~CPUStopper (void);
Bool Stop (int how);
void Start (void);
Bool Stopped (void) { return fNowStopped; }
void ShowError (const char*);
static Bool fgInstantiated;
private:
CPU* fCPU;
Bool fNowStopped;
};
#endif /* __CPU_MT_H__ */
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