140 lines
4.5 KiB
C++
140 lines
4.5 KiB
C++
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/*
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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 {
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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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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, unsigned type,
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arrayElementCount count, 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 ~syncGroupReadNotify ();
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private:
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void *pValue;
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syncGroupReadNotify ( struct CASG &sgIn, chid,
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unsigned type, arrayElementCount count, 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, unsigned type,
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arrayElementCount count, 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, unsigned type,
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arrayElementCount count, const void *pValueIn );
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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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class 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 () const;
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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 destroyIO ( 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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protected:
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virtual ~CASG ();
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private:
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tsDLList < syncGroupNotify > ioList;
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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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};
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#endif // ifdef syncGrouph
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