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cleaned up implementation of locks

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This commit is contained in:
Jeff Hill
2001-03-23 23:00:03 +00:00
parent 02c05f38b1
commit b1d14576c5
7 changed files with 119 additions and 146 deletions
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53
src/db/dbPutNotifyBlocker.cpp
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@@ -46,16 +46,17 @@ dbPutNotifyBlocker::dbPutNotifyBlocker ( dbChannelIO &chanIn ) :
dbPutNotifyBlocker::~dbPutNotifyBlocker ()
{
dbAutoScanLockCA ( this->chan );
if ( this->pPN ) {
this->pPN->cancel ();
this->pPN->destroy ();
}
}
void dbPutNotifyBlocker::putNotifyDestroyNotify ()
dbPutNotifyBlocker::uninstallPutNotifyIO ( dbPutNotifyIO &io )
{
dbAutoScanLockCA ( this->chan );
this->pPN = 0;
dbAutoScanLock ( this->chan );
if ( &io == this->pPN ) {
this->pPN = 0;
}
}
dbChannelIO & dbPutNotifyBlocker::channel () const
@@ -72,36 +73,46 @@ int dbPutNotifyBlocker::initiatePutNotify ( cacNotify &notify,
return ECA_ALLOCMEM;
}
epicsTime begin;
bool beginTimeInit = false;
while ( true ) {
{
dbAutoScanLockCA ( this->chan );
if ( ! this->pPN ) {
dbAutoScanLock ( this->chan );
if ( this->pPN == 0 ) {
this->pPN = pIO;
int status = this->pPN->initiate ( addr, type, count, pValue );
if ( status != ECA_NORMAL ) {
pIO->cancel ();
this->pPN = 0;
}
return status;
break;
}
}
// wait for put notify in progress to complete
this->block.wait ( 1.0 );
epicsTime begin = epicsTime::getCurrent ();
if ( epicsTime::getCurrent () - begin > 30.0 ) {
pIO->cancel ();
return ECA_PUTCBINPROG;
if ( beginTimeInit ) {
if ( epicsTime::getCurrent () - begin > 30.0 ) {
pIO->destroy ();
return ECA_PUTCBINPROG;
}
}
else {
begin = epicsTime::getCurrent ();
beginTimeInit = true;
}
this->block.wait ( 1.0 );
}
int status = pIO->initiate ( addr, type, count, pValue );
if ( status != ECA_NORMAL ) {
pIO->destroy ();
dbAutoScanLock ( this->chan );
this->pPN = 0;
}
return status;
}
extern "C" void putNotifyCompletion ( putNotify *ppn )
{
dbPutNotifyBlocker *pBlocker = static_cast < dbPutNotifyBlocker * > ( ppn->usrPvt );
{
dbAutoScanLockCA ( pBlocker->chan );
pBlocker->pPN->completion ();
pBlocker->pPN->cancel ();
pBlocker->pPN->destroy ();
dbAutoScanLock ( pBlocker->chan );
pBlocker->pPN = 0;
}
pBlocker->block.signal ();