154 lines
5.0 KiB
C++
154 lines
5.0 KiB
C++
/*
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* $Id$
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*
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*
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* L O S A L A M O S
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* Los Alamos National Laboratory
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* Los Alamos, New Mexico 87545
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*
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* Copyright, 1986, The Regents of the University of California.
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*
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*
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* Author Jeffrey O. Hill
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* johill@lanl.gov
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* 505 665 1831
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*/
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#ifndef syncGrouph
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#define syncGrouph
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#include "tsDLList.h"
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#include "tsFreeList.h"
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#include "resourceLib.h"
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#include "epicsEvent.h"
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#define epicsExportSharedSymbols
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#include "cadef.h"
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#include "cacIO.h"
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#undef epicsExportSharedSymbols
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static const unsigned CASG_MAGIC = 0xFAB4CAFE;
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// used to control access to CASG's recycle routines which
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// should only be indirectly invoked by CASG when its lock
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// is applied
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class casgRecycle { // X aCC 655
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public:
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virtual void recycleSyncGroupWriteNotify ( class syncGroupWriteNotify & io ) = 0;
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virtual void recycleSyncGroupReadNotify ( class syncGroupReadNotify & io ) = 0;
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};
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class syncGroupNotify : public tsDLNode < syncGroupNotify > {
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public:
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syncGroupNotify ( struct CASG &sgIn, chid );
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virtual void destroy ( casgRecycle & ) = 0;
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void show ( unsigned level ) const;
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bool ioInitiated () const;
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protected:
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chid chan;
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struct CASG & sg;
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const unsigned magic;
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cacChannel::ioid id;
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bool idIsValid;
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virtual ~syncGroupNotify ();
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};
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class syncGroupReadNotify : public syncGroupNotify, public cacReadNotify {
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public:
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static syncGroupReadNotify * factory (
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tsFreeList < class syncGroupReadNotify, 128 > &,
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struct CASG &, chid, void *pValueIn );
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void begin ( unsigned type, arrayElementCount count );
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void destroy ( casgRecycle & );
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void show ( unsigned level ) const;
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protected:
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virtual ~syncGroupReadNotify ();
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private:
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void *pValue;
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syncGroupReadNotify ( struct CASG &sgIn, chid, void *pValueIn );
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void * operator new ( size_t,
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tsFreeList < class syncGroupReadNotify, 128 > & );
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# if ! defined ( NO_PLACEMENT_DELETE )
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void operator delete ( void *, size_t,
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tsFreeList < class syncGroupReadNotify, 128 > & );
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# endif
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void completion (
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unsigned type, arrayElementCount count, const void *pData );
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void exception (
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int status, const char *pContext, unsigned type, arrayElementCount count );
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};
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class syncGroupWriteNotify : public syncGroupNotify, public cacWriteNotify {
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public:
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static syncGroupWriteNotify * factory (
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tsFreeList < class syncGroupWriteNotify, 128 > &,
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struct CASG &, chid );
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void begin ( unsigned type, arrayElementCount count,
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const void * pValueIn );
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void destroy ( casgRecycle & );
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void show ( unsigned level ) const;
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protected:
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virtual ~syncGroupWriteNotify (); // allocate only from pool
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private:
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void *pValue;
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syncGroupWriteNotify ( struct CASG &, chid );
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void * operator new ( size_t,
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tsFreeList < class syncGroupWriteNotify, 128 > & );
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# if ! defined ( NO_PLACEMENT_DELETE )
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void operator delete ( void *, size_t,
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tsFreeList < class syncGroupWriteNotify, 128 > & );
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# endif
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void completion ();
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void exception ( int status, const char *pContext, unsigned type, arrayElementCount count );
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};
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struct oldCAC;
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struct CASG : public chronIntIdRes < CASG >, private casgRecycle {
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public:
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CASG ( oldCAC & cacIn );
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bool ioComplete ();
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void destroy ();
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bool verify () const;
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int block ( double timeout );
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void reset ();
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void show ( unsigned level ) const;
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int get ( chid pChan, unsigned type, arrayElementCount count, void * pValue );
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int put ( chid pChan, unsigned type, arrayElementCount count, const void * pValue );
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void completionNotify ( syncGroupNotify & );
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void * operator new ( size_t size );
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void operator delete ( void * pCadaver, size_t size );
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int printf ( const char * pFormat, ... );
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void exception ( int status, const char *pContext,
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const char *pFileName, unsigned lineNo );
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void exception ( int status, const char *pContext,
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const char *pFileName, unsigned lineNo, oldChannelNotify &chan,
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unsigned type, arrayElementCount count, unsigned op );
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protected:
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virtual ~CASG ();
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private:
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tsDLList < syncGroupNotify > ioPendingList;
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tsDLList < syncGroupNotify > ioCompletedList;
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epicsMutex mutable mutex;
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epicsEvent sem;
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oldCAC & client;
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unsigned magic;
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tsFreeList < class syncGroupReadNotify, 128 > freeListReadOP;
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tsFreeList < class syncGroupWriteNotify, 128 > freeListWriteOP;
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void recycleSyncGroupWriteNotify ( syncGroupWriteNotify &io );
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void recycleSyncGroupReadNotify ( syncGroupReadNotify &io );
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static tsFreeList < struct CASG, 128 > freeList;
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static epicsMutex freeListMutex;
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void destroyPendingIO ( syncGroupNotify * );
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void destroyCompletedIO ();
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void destroyPendingIO ();
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};
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inline bool syncGroupNotify::ioInitiated () const
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{
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return this->idIsValid;
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}
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#endif // ifdef syncGrouph
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