158 lines
4.9 KiB
C++
158 lines
4.9 KiB
C++
/*************************************************************************\
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* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* EPICS BASE Versions 3.13.7
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* and higher are distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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/*
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* Author: Jeffrey O. Hill
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* hill@luke.lanl.gov
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* (505) 665 1831
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*/
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#include <string>
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#include <stdexcept>
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#define epicsAssertAuthor "Jeff Hill johill@lanl.gov"
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#include "errlog.h"
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#define epicsExportSharedSymbols
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#include "iocinf.h"
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#include "syncGroup.h"
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#include "oldAccess.h"
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syncGroupReadNotify::syncGroupReadNotify (
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CASG & sgIn, chid pChan, void * pValueIn ) :
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chan ( pChan ), sg ( sgIn ), pValue ( pValueIn ),
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magic ( CASG_MAGIC ), id ( 0u ),
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idIsValid ( false ), ioComplete ( false )
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{
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}
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void syncGroupReadNotify::begin (
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epicsGuard < epicsMutex > & guard,
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unsigned type, arrayElementCount count )
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{
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this->chan->getClientCtx().
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eliminateExcessiveSendBacklog ( *this->chan, guard );
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this->ioComplete = false;
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boolFlagManager mgr ( this->idIsValid );
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this->chan->read ( guard, type, count, *this, &this->id );
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mgr.release ();
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}
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void syncGroupReadNotify::cancel (
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epicsGuard < epicsMutex > & cbGuard,
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epicsGuard < epicsMutex > & guard )
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{
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if ( this->idIsValid ) {
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this->chan->ioCancel ( cbGuard, guard, this->id );
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this->idIsValid = false;
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}
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}
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syncGroupReadNotify * syncGroupReadNotify::factory (
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tsFreeList < class syncGroupReadNotify, 128, epicsMutexNOOP > & freeList,
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struct CASG & sg, chid chan, void * pValueIn )
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{
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return new ( freeList ) // X aCC 930
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syncGroupReadNotify ( sg, chan, pValueIn );
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}
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void syncGroupReadNotify::destroy (
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epicsGuard < epicsMutex > & guard, casgRecycle & recycle )
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{
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this->~syncGroupReadNotify ();
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recycle.recycleSyncGroupReadNotify ( guard, *this );
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}
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syncGroupReadNotify::~syncGroupReadNotify ()
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{
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assert ( ! this->idIsValid );
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}
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void syncGroupReadNotify::completion (
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epicsGuard < epicsMutex > & guard, unsigned type,
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arrayElementCount count, const void * pData )
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{
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if ( this->magic != CASG_MAGIC ) {
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this->sg.printf (
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"cac: sync group io_complete(): bad sync grp op magic number?\n" );
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return;
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}
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if ( this->pValue ) {
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size_t size = dbr_size_n ( type, count );
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memcpy ( this->pValue, pData, size );
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}
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this->sg.completionNotify ( guard, *this );
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this->idIsValid = false;
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this->ioComplete = true;
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}
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void syncGroupReadNotify::exception (
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epicsGuard < epicsMutex > & guard, int status, const char * pContext,
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unsigned type, arrayElementCount count )
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{
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if ( this->magic != CASG_MAGIC ) {
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this->sg.printf (
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"cac: sync group io_complete(): bad sync grp op magic number?\n" );
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return;
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}
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this->idIsValid = false;
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this->sg.exception ( guard, status, pContext,
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__FILE__, __LINE__, *this->chan, type, count, CA_OP_GET );
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//
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// This notify is left installed at this point as a place holder indicating that
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// all requests have not been completed. This notify is not uninstalled until
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// CASG::block() times out or unit they call CASG::reset().
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//
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}
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void syncGroupReadNotify::show (
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epicsGuard < epicsMutex > &, unsigned level ) const
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{
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::printf ( "pending sg read op: pVal=%p\n", this->pValue );
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if ( level > 0u ) {
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::printf ( "pending sg op: magic=%u sg=%p\n",
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this->magic, static_cast < void * > ( & this->sg ) );
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}
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}
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void * syncGroupReadNotify::operator new ( size_t ) // X aCC 361
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{
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// The HPUX compiler seems to require this even though no code
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// calls it directly
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throw std::logic_error ( "why is the compiler calling private operator new" );
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}
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void syncGroupReadNotify::operator delete ( void * )
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{
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// Visual C++ .net appears to require operator delete if
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// placement operator delete is defined? I smell a ms rat
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// because if I declare placement new and delete, but
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// comment out the placement delete definition there are
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// no undefined symbols.
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errlogPrintf ( "%s:%d this compiler is confused about placement delete - memory was probably leaked",
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__FILE__, __LINE__ );
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}
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void * syncGroupReadNotify::operator new ( size_t size,
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tsFreeList < class syncGroupReadNotify, 128, epicsMutexNOOP > & freeList )
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{
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return freeList.allocate ( size );
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}
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#if defined ( CXX_PLACEMENT_DELETE )
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void syncGroupReadNotify::operator delete ( void *pCadaver,
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tsFreeList < class syncGroupReadNotify, 128, epicsMutexNOOP > &freeList )
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{
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freeList.release ( pCadaver );
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}
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#endif
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