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fixed possible race condition where put notify block might be nilled out

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while it is running
This commit is contained in:
Jeff Hill
2001-09-21 17:09:55 +00:00
parent c5084f15cc
commit 2e329813aa
4 changed files with 2 additions and 23 deletions
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11
src/db/dbPutNotifyBlocker.cpp
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@@ -88,19 +88,12 @@ extern "C" void putNotifyCompletion ( putNotify *ppn )
}
}
else {
errlogPrintf ( "put notify completion pNotify = %p?\n", pBlocker->pNotify );
errlogPrintf ( "put notify completion with nill pNotify?\n" );
}
// no need to lock here because only one put notify at a timeis lalowed to run
memset ( &pBlocker->pn, '\0', sizeof ( pBlocker->pn ) );
pBlocker->pNotify = 0;
pBlocker->block.signal ();
pBlocker->chan.putNotifyCompletion ( *pBlocker );
}
void dbPutNotifyBlocker::completion ()
{
memset ( &this->pn, '\0', sizeof ( this->pn ) );
this->pNotify = 0;
this->block.signal ();
}
void dbPutNotifyBlocker::initiatePutNotify ( epicsMutex &mutex, cacWriteNotify &notify,