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improved interface to CAC

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This commit is contained in:
Jeff Hill
2001-02-09 17:41:23 +00:00
parent 7bc172f355
commit 8ba3da20af
7 changed files with 77 additions and 56 deletions
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33
src/db/dbChannelIO.cpp
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@@ -30,20 +30,21 @@
tsFreeList < dbChannelIO > dbChannelIO::freeList;
dbChannelIO::dbChannelIO ( cac &cacCtx, cacChannel &chan, const dbAddr &addrIn, dbServiceIO &serviceIO ) :
cacLocalChannelIO ( cacCtx, chan ), serviceIO ( serviceIO ), pGetCallbackCache ( 0 ),
pBlocker ( 0 ), getCallbackCacheSize ( 0ul ), addr ( addrIn )
dbChannelIO::dbChannelIO ( cacChannelNotify &notify,
const dbAddr &addrIn, dbServiceIO &serviceIO ) :
cacChannelIO ( notify ), serviceIO ( serviceIO ),
pGetCallbackCache ( 0 ), pBlocker ( 0 ),
getCallbackCacheSize ( 0ul ), addr ( addrIn )
{
chan.attachIO ( *this );
this->connectNotify ();
}
void dbChannelIO::initiateConnect ()
{
this->notify ().connectNotify ( *this );
}
dbChannelIO::~dbChannelIO ()
{
// this must go in the derived class's destructor because
// this calls virtual functions in the cacChannelIO base
this->ioReleaseNotify ();
this->lock ();
/*
@@ -111,13 +112,14 @@ int dbChannelIO::read ( unsigned type, unsigned long count, cacNotify &notify )
int status = db_get_field ( &this->addr, static_cast <int> ( type ),
this->pGetCallbackCache, static_cast <int> ( count ), 0);
if ( status ) {
notify.exceptionNotify ( ECA_GETFAIL, "db_get_field () completed unsuccessfuly" );
notify.exceptionNotify ( *this, ECA_GETFAIL,
"db_get_field () completed unsuccessfuly" );
}
else {
notify.completionNotify ( type, count, this->pGetCallbackCache );
notify.completionNotify ( *this, type, count, this->pGetCallbackCache );
}
this->unlock ();
notify.destroy ();
notify.release ();
return ECA_NORMAL;
}
@@ -164,7 +166,7 @@ int dbChannelIO::write ( unsigned type, unsigned long count,
}
int dbChannelIO::subscribe ( unsigned type, unsigned long count,
unsigned mask, cacNotify &notify )
unsigned mask, cacNotify &notify, cacNotifyIO *&pReturnIO )
{
dbSubscriptionIO *pIO = new dbSubscriptionIO ( *this, notify, type, count );
if ( ! pIO ) {
@@ -172,7 +174,10 @@ int dbChannelIO::subscribe ( unsigned type, unsigned long count,
}
int status = pIO->begin ( this->addr, mask );
if ( status != ECA_NORMAL ) {
if ( status == ECA_NORMAL ) {
pReturnIO = pIO;
}
else {
pIO->destroy ();
}
return status;