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added proper rundown of db events and db put call backs

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This commit is contained in:
Jeff Hill
2000-05-31 22:05:19 +00:00
parent c9d6b15639
commit 937bbc7dca
6 changed files with 95 additions and 17 deletions
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37
src/db/dbChannelIO.cpp
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@@ -33,14 +33,31 @@ extern "C" unsigned short dbDBRnewToDBRold[DBR_ENUM+1];
tsFreeList < dbChannelIO > dbChannelIO::freeList;
dbChannelIO::dbChannelIO ( cacChannel &chan, const dbAddr &addrIn, dbServiceIO &serviceIO ) :
cacChannelIO ( chan ), serviceIO ( serviceIO ), pGetCallbackCache ( 0 ),
getCallbackCacheSize ( 0ul ), addr ( addrIn )
cacLocalChannelIO ( chan ), serviceIO ( serviceIO ), pGetCallbackCache ( 0 ),
getCallbackCacheSize ( 0ul ), pBlocker (0), addr ( addrIn )
{
chan.attachIO ( *this );
this->connectNotify ();
}
dbChannelIO::~dbChannelIO ()
{
/*
* remove any subscriptions attached to this channel
*/
this->lock ();
tsDLIterBD <dbSubscriptionIO> iter = this->eventq.first ();
while ( iter != iter.eol () ) {
tsDLIterBD <dbSubscriptionIO> next = iter.itemAfter ();
iter->destroy ();
iter = next;
}
this->unlock ();
if ( this->pBlocker ) {
this->pBlocker->destroy ();
}
if ( this->pGetCallbackCache ) {
delete [] this->pGetCallbackCache;
}
@@ -139,13 +156,26 @@ int dbChannelIO::write ( unsigned type, unsigned long count,
const void *pValue, cacNotify &notify )
{
dbPutNotifyIO *pIO;
if ( count > LONG_MAX ) {
return ECA_BADCOUNT;
}
pIO = new dbPutNotifyIO ( notify );
this->lock ();
if ( ! this->pBlocker ) {
this->pBlocker = new dbPutNotifyBlocker ( *this );
if ( ! this->pBlocker ) {
this->unlock ();
return ECA_ALLOCMEM;
}
}
this->unlock ();
pIO = new dbPutNotifyIO ( notify, *this->pBlocker );
if ( ! pIO ) {
return ECA_ALLOCMEM;
}
int status = pIO->initiate ( this->addr, type, count, pValue );
if ( status != ECA_NORMAL ) {
pIO->destroy ();
@@ -160,6 +190,7 @@ int dbChannelIO::subscribe ( unsigned type, unsigned long count,
if ( ! pIO ) {
return ECA_ALLOCMEM;
}
int status = pIO->begin ( this->addr, mask );
if ( status != ECA_NORMAL ) {
pIO->destroy ();