mirror of
https://github.com/DaedalusX64/daedalus.git
synced 2025-04-02 10:21:48 -04:00
142 lines
4.1 KiB
C++
142 lines
4.1 KiB
C++
/*
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Copyright (C) 2004 StrmnNrmn
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef UTILITY_SYNCHRONISER_H_
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#define UTILITY_SYNCHRONISER_H_
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#include "Base/Macros.h"
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#ifdef DAEDALUS_ENABLE_SYNCHRONISATION
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//*****************************************************************************
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// Synchronisation flags
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//*****************************************************************************
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enum ESynchFlags
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{
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DAED_SYNC_NONE = 0x00000000,
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DAED_SYNC_REG_GPR = 0x00000001, // e.g. r0, at, t0, t1
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DAED_SYNC_REG_CCR0 = 0x00000002, // e.g. status, control
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DAED_SYNC_REG_CPU1 = 0x00000004, // e.g. fp00, fp01
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DAED_SYNC_REG_CCR1 = 0x00000008, // e.g. fcr0, fcr31
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DAED_SYNC_REG_PC = 0x00000010, // e.g. program counter
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DAED_SYNC_FRAGMENT_PC = 0x00000020, // e.g. program counter on entry/exit from fragments
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};
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//
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// Define a union of the above flags to determine what is synchronised.
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// The compiler is clever enough to optimise away calls to SYNCH_POINT
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// if a particular flag isn't set.
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//
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static const u32 DAED_SYNC_REGS(DAED_SYNC_REG_GPR|DAED_SYNC_REG_CCR0|
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DAED_SYNC_REG_CPU1|DAED_SYNC_REG_CCR1);
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static const u32 DAED_SYNC_MASK(DAED_SYNC_FRAGMENT_PC|DAED_SYNC_REG_GPR|DAED_SYNC_REG_CCR0);
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//*****************************************************************************
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// Base synchronisation interface
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//*****************************************************************************
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class CSynchroniser
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{
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public:
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virtual ~CSynchroniser() {}
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virtual bool IsOpen() const = 0;
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protected:
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enum ESynchResult
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{
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SR_OK = 0,
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SR_OUT_OF_STORAGE,
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SR_OUT_OF_INPUT,
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SR_OUT_OF_SYNCH,
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};
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virtual ESynchResult SynchPoint( const void * data, u32 length ) = 0;
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virtual ESynchResult SynchData( void * data, u32 length ) = 0;
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virtual void ResetData() = 0;
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public:
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static bool InitialiseSynchroniser();
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static CSynchroniser * CreateProducer( const char * filename );
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static CSynchroniser * CreateConsumer( const char * filename );
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static void Destroy();
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// Either write or read some data to/from the data stream
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template < typename T > static void SynchData( T & data )
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{
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if( mpSynchroniser != NULL )
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{
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switch( mpSynchroniser->SynchData( &data, sizeof( T ) ) )
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{
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case SR_OK: return;
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case SR_OUT_OF_STORAGE: HandleOutOfStorage(); return;
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case SR_OUT_OF_INPUT: HandleOutOfInput(); return;
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case SR_OUT_OF_SYNCH: DAEDALUS_ERROR( "Shouldn't ever be out of synch?" ); return;
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default: NODEFAULT;
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}
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}
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}
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// Check that the data is in synch at this point
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template < typename T > static void SynchPoint( const T & data, const char * msg )
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{
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if ( mpSynchroniser != NULL )
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{
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switch ( mpSynchroniser->SynchPoint( &data, sizeof( T ) ) )
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{
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case SR_OK: return;
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case SR_OUT_OF_STORAGE: HandleOutOfStorage(); return;
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case SR_OUT_OF_INPUT: HandleOutOfInput(); return;
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case SR_OUT_OF_SYNCH: HandleOutOfSynch( msg ); return;
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default: NODEFAULT;
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}
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}
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}
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static void Reset()
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{
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if ( mpSynchroniser != NULL )
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{
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mpSynchroniser->ResetData();
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}
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}
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static void HandleOutOfStorage();
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static void HandleOutOfInput();
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static void HandleOutOfSynch( const char * msg );
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private:
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static CSynchroniser * mpSynchroniser;
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};
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#define SYNCH_POINT( flags, x, msg ) if ( DAED_SYNC_MASK & (flags) ) CSynchroniser::SynchPoint( x, msg )
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#define SYNCH_DATA( x ) CSynchroniser::SynchData( x )
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#else
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#define SYNCH_POINT( flags, x, msg )
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#define SYNCH_DATA( x )
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#endif
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#endif // UTILITY_SYNCHRONISER_H_
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