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optimized protocol transfer

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This commit is contained in:
Jeff Hill
2003-04-07 21:15:22 +00:00
parent 8e3b9a0453
commit 7429e6a1de
6 changed files with 224 additions and 101 deletions
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44
src/ca/comQueRecv.cpp
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@@ -198,8 +198,6 @@ epicsUInt16 comQueRecv::popUInt16 ()
comBuf::throwInsufficentBytesException ();
}
// try first for all in one buffer efficent version
// (double check here avoids slow C++ exception)
// (hopefully optimizer removes inside check)
epicsUInt16 tmp;
comBuf::popStatus status = pComBuf->pop ( tmp );
if ( status.success ) {
@@ -219,8 +217,6 @@ epicsUInt32 comQueRecv::popUInt32 ()
comBuf::throwInsufficentBytesException ();
}
// try first for all in one buffer efficent version
// (double check here avoids slow C++ exception)
// (hopefully optimizer removes inside check)
epicsUInt32 tmp;
comBuf::popStatus status = pComBuf->pop ( tmp );
if ( status.success ) {
@@ -232,3 +228,43 @@ epicsUInt32 comQueRecv::popUInt32 ()
}
return this->multiBufferPopUInt32 ();
}
bool comQueRecv::popOldMsgHeader ( caHdrLargeArray & msg )
{
// try first for all in one buffer efficent version
comBuf * pComBuf = this->bufs.first ();
if ( ! pComBuf ) {
return false;
}
unsigned avail = pComBuf->occupiedBytes ();
if ( avail >= sizeof ( caHdr ) ) {
pComBuf->pop ( msg.m_cmmd );
ca_uint16_t smallPostsize;
pComBuf->pop ( smallPostsize );
msg.m_postsize = smallPostsize;
pComBuf->pop ( msg.m_dataType );
ca_uint16_t smallCount;
pComBuf->pop ( smallCount );
msg.m_count = smallCount;
pComBuf->pop ( msg.m_cid );
pComBuf->pop ( msg.m_available );
this->nBytesPending -= sizeof ( caHdr );
if ( avail == sizeof ( caHdr ) ) {
this->removeAndDestroyBuf ( *pComBuf );
}
return true;
}
else if ( this->occupiedBytes () >= sizeof ( caHdr ) ) {
msg.m_cmmd = this->popUInt16 ();
msg.m_postsize = this->popUInt16 ();
msg.m_dataType = this->popUInt16 ();
msg.m_count = this->popUInt16 ();
msg.m_cid = this->popUInt32 ();
msg.m_available = this->popUInt32 ();
return true;
}
else {
return false;
}
}