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Acquire the send lock only while actually sending

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Thus, we no longer hold the send lock while substituting missing paths
on the build machine. This is a good thing in particular for macOS
builders which have a tendency to hang forever in curl downloads.
This commit is contained in:
Eelco Dolstra 2017-09-01 16:28:49 +02:00
parent 50ab80caf2
commit 4af97c57f5
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GPG key ID: 8170B4726D7198DE
1 changed files with 5 additions and 4 deletions
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9
src/hydra-queue-runner/build-remote.cc
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@ -77,7 +77,7 @@ static void openConnection(Machine::ptr machine, Path tmpDir, int stderrFD, Chil
}
static void copyClosureTo(ref<Store> destStore,
static void copyClosureTo(std::timed_mutex & sendMutex, ref<Store> destStore,
FdSource & from, FdSink & to, const PathSet & paths,
bool useSubstitutes = false)
{
@ -107,6 +107,9 @@ static void copyClosureTo(ref<Store> destStore,
printMsg(lvlDebug, format("sending %1% missing paths") % missing.size());
std::unique_lock<std::timed_mutex> sendLock(sendMutex,
std::chrono::seconds(600));
to << cmdImportPaths;
destStore->exportPaths(missing, to);
to.flush();
@ -229,15 +232,13 @@ void State::buildRemote(ref<Store> destStore,
/* Copy the input closure. */
if (/* machine->sshName != "localhost" */ true) {
auto mc1 = std::make_shared<MaintainCount>(nrStepsWaiting);
std::unique_lock<std::timed_mutex> sendLock(
machine->state->sendLock, std::chrono::seconds(600));
mc1.reset();
MaintainCount mc2(nrStepsCopyingTo);
printMsg(lvlDebug, format("sending closure of ‘%1%’ to ‘%2%’") % step->drvPath % machine->sshName);
auto now1 = std::chrono::steady_clock::now();
copyClosureTo(destStore, from, to, inputs, true);
copyClosureTo(machine->state->sendLock, destStore, from, to, inputs, true);
auto now2 = std::chrono::steady_clock::now();