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[docs] Improve commenting in ProcessGetData()

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This commit is contained in:
John Newbery 2020-04-28 20:28:51 -04:00
parent 2f032556e0
commit 9847e205bf
1 changed files with 7 additions and 1 deletions
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8
src/net_processing.cpp
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@ -1604,10 +1604,14 @@ void static ProcessGetData(CNode* pfrom, const CChainParams& chainparams, CConnm
{
LOCK(cs_main);
// Process as many TX items from the front of the getdata queue as
// possible, since they're common and it's efficient to batch process
// them.
while (it != pfrom->vRecvGetData.end() && (it->type == MSG_TX || it->type == MSG_WITNESS_TX)) {
if (interruptMsgProc)
return;
// Don't bother if send buffer is too full to respond anyway
// The send buffer provides backpressure. If there's no space in
// the buffer, pause processing until the next call.
if (pfrom->fPauseSend)
break;
@ -1644,6 +1648,8 @@ void static ProcessGetData(CNode* pfrom, const CChainParams& chainparams, CConnm
}
} // release cs_main
// Only process one BLOCK item per call, since they're uncommon and can be
// expensive to process.
if (it != pfrom->vRecvGetData.end() && !pfrom->fPauseSend) {
const CInv &inv = *it++;
if (inv.type == MSG_BLOCK || inv.type == MSG_FILTERED_BLOCK || inv.type == MSG_CMPCT_BLOCK || inv.type == MSG_WITNESS_BLOCK) {