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subtle changes which relate to not flushing the output buffer if there are bytes

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pending in the input queue (improves performance)
This commit is contained in:
Jeff Hill
1998-09-24 20:50:50 +00:00
parent 461e1f3844
commit c36de7d61d
1 changed files with 32 additions and 17 deletions
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49
src/cas/generic/st/casStreamOS.cc
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@@ -4,6 +4,9 @@
//
//
// $Log$
// Revision 1.8 1998/05/05 16:29:58 jhill
// fixed warnings
//
// Revision 1.7 1997/08/05 00:47:21 jhill
// fixed warnings
//
@@ -352,7 +355,13 @@ void casStreamOS::eventSignal()
//
void casStreamOS::eventFlush()
{
this->armSend();
//
// if there is nothing pending in the input
// queue, then flush the output queue
//
if (this->inBuf::bytesAvailable()==0u) {
this->armSend ();
}
}
@@ -586,16 +595,18 @@ void casStreamWriteReg::callBack()
else {
casStreamOS *pStrmOS = &this->os;
//
// anything left in the send buffer that
// still needs to be sent ?
// (once this starts sending it doesnt stop until
// the outgoing buf is empty)
// if anything is left in the send buffer that
// still needs to be sent and there are not
// requests pending in the input buffer then
// keep sending the output buffer until it is
// empty
//
// do not test for this with flushCond since
// additional bytes may have been added since
// we flushed the out buffer
//
if (pStrmOS->outBuf::bytesPresent()>0u) {
if (pStrmOS->outBuf::bytesPresent()>0u &&
pStrmOS->inBuf::bytesAvailable()==0u) {
//
// delete this object now so that the
// arm will work
@@ -615,31 +626,35 @@ void casStreamWriteReg::callBack()
//
casProcCond casStreamOS::processInput()
{
caStatus status;
caStatus status;
# ifdef DEBUG
printf(
"Resp bytes to send=%d, Req bytes pending %d\n",
this->outBuf::bytesPresent(),
this->inBuf::bytesPresent());
"Resp bytes to send=%d, Req bytes pending %d\n",
this->outBuf::bytesPresent(),
this->inBuf::bytesPresent());
# endif
status = this->processMsg();
if ( status==S_cas_success ||
status = this->processMsg();
if (status==S_cas_success ||
status==S_cas_sendBlocked ||
status==S_casApp_postponeAsyncIO ||
status==S_cas_partialMessage) {
status==S_casApp_postponeAsyncIO) {
//
// if there is nothing pending in the input
// queue, then flush the output queue
//
if (this->inBuf::bytesAvailable()==0u) {
this->armSend ();
}
this->armRecv();
this->armRecv ();
return casProcOk;
}
else {
errMessage (status,
errMessage (status,
"unexpected problem with client's input - forcing disconnect");
return casProcDisconnect;
}
}
}