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net: add a flag to indicate when a node's process queue is full

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Messages are dumped very quickly from the socket handler to the processor, so
it's the depth of the processing queue that's interesting.

The socket handler checks the process queue's size during the brief message
hand-off and pauses if necessary, and the processor possibly unpauses each time
a message is popped off of its queue.
This commit is contained in:
Cory Fields
2016-12-31 02:05:30 -05:00
parent 4d712e366c
commit c6e8a9bcff
3 changed files with 11 additions and 12 deletions
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10
src/net.cpp
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@@ -1165,9 +1165,7 @@ void CConnman::ThreadSocketHandler()
}
{
TRY_LOCK(pnode->cs_vRecvMsg, lockRecv);
if (lockRecv && (
pnode->vRecvMsg.empty() || !pnode->vRecvMsg.front().complete() ||
pnode->GetTotalRecvSize() <= GetReceiveFloodSize()))
if (lockRecv && !pnode->fPauseRecv)
FD_SET(pnode->hSocket, &fdsetRecv);
}
}
@@ -1240,14 +1238,18 @@ void CConnman::ThreadSocketHandler()
pnode->CloseSocketDisconnect();
RecordBytesRecv(nBytes);
if (notify) {
size_t nSizeAdded = 0;
auto it(pnode->vRecvMsg.begin());
for (; it != pnode->vRecvMsg.end(); ++it) {
if (!it->complete())
break;
nSizeAdded += it->vRecv.size() + CMessageHeader::HEADER_SIZE;
}
{
LOCK(pnode->cs_vProcessMsg);
pnode->vProcessMsg.splice(pnode->vProcessMsg.end(), pnode->vRecvMsg, pnode->vRecvMsg.begin(), it);
pnode->nProcessQueueSize += nSizeAdded;
pnode->fPauseRecv = pnode->nProcessQueueSize > nReceiveFloodSize;
}
WakeMessageHandler();
}
@@ -2592,6 +2594,8 @@ CNode::CNode(NodeId idIn, ServiceFlags nLocalServicesIn, int nMyStartingHeightIn
minFeeFilter = 0;
lastSentFeeFilter = 0;
nextSendTimeFeeFilter = 0;
fPauseRecv = false;
nProcessQueueSize = 0;
BOOST_FOREACH(const std::string &msg, getAllNetMessageTypes())
mapRecvBytesPerMsgCmd[msg] = 0;