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no-copy socket read

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This commit is contained in:
Matej Sekoranja
2011-08-28 10:10:56 +02:00
parent 872135a4b1
commit 44d092ffa7
2 changed files with 7 additions and 13 deletions
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9
pvAccessApp/remote/blockingTCPTransport.cpp
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@@ -472,11 +472,10 @@ namespace epics {
int requiredPosition = (currentStartPosition+requiredBytes);
while(_socketBuffer->getPosition()<requiredPosition) {
// read
// TODO wrap and do not copy !!!
char readBuffer[MAX_TCP_RECV];
size_t maxToRead = min(MAX_TCP_RECV,_socketBuffer->getRemaining());
ssize_t bytesRead = recv(_channel, readBuffer, maxToRead, 0);
_socketBuffer->put(readBuffer, 0, bytesRead);
int pos = _socketBuffer->getPosition();
ssize_t bytesRead = recv(_channel, (void*)(_socketBuffer->getArray()+pos),
_socketBuffer->getRemaining(), 0);
_socketBuffer->setPosition(pos+bytesRead);
if(bytesRead<=0) {