forked from lix-project/lix
Fix tests on systems with a non-master git defaultBranch #1
11 changed files with 271 additions and 253 deletions
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@ -11,7 +11,10 @@
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#include "drv-output-substitution-goal.hh"
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#include "strings.hh"
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#include <boost/outcome/try.hpp>
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#include <fstream>
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#include <kj/async-unix.h>
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#include <kj/debug.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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@ -780,7 +783,7 @@ try {
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buildResult.startTime = time(0); // inexact
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state = &DerivationGoal::buildDone;
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started();
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return WaitForWorld{std::move(a.fds), false};
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return WaitForWorld{std::move(a.promise), false};
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},
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[&](HookReply::Postpone) -> std::optional<WorkResult> {
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/* Not now; wait until at least one child finishes or
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@ -992,9 +995,6 @@ try {
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buildResult.timesBuilt++;
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buildResult.stopTime = time(0);
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/* So the child is gone now. */
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worker.childTerminated(this);
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/* Close the read side of the logger pipe. */
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closeReadPipes();
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@ -1266,12 +1266,8 @@ HookReply DerivationGoal::tryBuildHook(bool inBuildSlot)
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/* Create the log file and pipe. */
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Path logFile = openLogFile();
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std::set<int> fds;
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fds.insert(hook->fromHook.get());
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fds.insert(hook->builderOut.get());
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builderOutFD = &hook->builderOut;
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return HookReply::Accept{std::move(fds)};
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return HookReply::Accept{handleChildOutput()};
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}
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@ -1331,23 +1327,69 @@ void DerivationGoal::closeLogFile()
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}
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Goal::WorkResult DerivationGoal::handleChildOutput(int fd, std::string_view data)
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Goal::Finished DerivationGoal::tooMuchLogs()
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{
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assert(builderOutFD);
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auto tooMuchLogs = [&] {
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killChild();
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return done(
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BuildResult::LogLimitExceeded, {},
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Error("%s killed after writing more than %d bytes of log output",
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getName(), settings.maxLogSize));
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};
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}
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struct DerivationGoal::InputStream final : private kj::AsyncObject
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{
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int fd;
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kj::UnixEventPort::FdObserver observer;
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InputStream(kj::UnixEventPort & ep, int fd)
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: fd(fd)
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, observer(ep, fd, kj::UnixEventPort::FdObserver::OBSERVE_READ)
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{
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int flags = fcntl(fd, F_GETFL);
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if (flags < 0) {
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throw SysError("fcntl(F_GETFL) failed on fd %i", fd);
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}
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if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0) {
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throw SysError("fcntl(F_SETFL) failed on fd %i", fd);
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}
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}
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kj::Promise<std::string_view> read(kj::ArrayPtr<char> buffer)
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{
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const auto res = ::read(fd, buffer.begin(), buffer.size());
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// closing a pty endpoint causes EIO on the other endpoint. stock kj streams
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// do not handle this and throw exceptions we can't ask for errno instead :(
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// (we can't use `errno` either because kj may well have mangled it by now.)
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if (res == 0 || (res == -1 && errno == EIO)) {
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return std::string_view{};
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}
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KJ_NONBLOCKING_SYSCALL(res) {}
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if (res > 0) {
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return std::string_view{buffer.begin(), static_cast<size_t>(res)};
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}
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return observer.whenBecomesReadable().then([this, buffer] {
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return read(buffer);
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});
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}
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};
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kj::Promise<Outcome<void, Goal::Finished>> DerivationGoal::handleBuilderOutput(InputStream & in) noexcept
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try {
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auto buf = kj::heapArray<char>(4096);
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while (true) {
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auto data = co_await in.read(buf);
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lastChildActivity = worker.aio.provider->getTimer().now();
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if (data.empty()) {
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co_return result::success();
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}
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// local & `ssh://`-builds are dealt with here.
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if (fd == builderOutFD->get()) {
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logSize += data.size();
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if (settings.maxLogSize && logSize > settings.maxLogSize) {
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return tooMuchLogs();
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co_return tooMuchLogs();
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}
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for (auto c : data)
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@ -1362,10 +1404,22 @@ Goal::WorkResult DerivationGoal::handleChildOutput(int fd, std::string_view data
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}
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if (logSink) (*logSink)(data);
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return StillAlive{};
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}
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} catch (...) {
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co_return std::current_exception();
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}
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kj::Promise<Outcome<void, Goal::Finished>> DerivationGoal::handleHookOutput(InputStream & in) noexcept
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try {
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auto buf = kj::heapArray<char>(4096);
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while (true) {
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auto data = co_await in.read(buf);
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lastChildActivity = worker.aio.provider->getTimer().now();
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if (data.empty()) {
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co_return result::success();
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}
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if (hook && fd == hook->fromHook.get()) {
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for (auto c : data)
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if (c == '\n') {
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auto json = parseJSONMessage(currentHookLine);
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@ -1381,7 +1435,7 @@ Goal::WorkResult DerivationGoal::handleChildOutput(int fd, std::string_view data
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(fields.size() > 0 ? fields[0].get<std::string>() : "") + "\n";
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logSize += logLine.size();
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if (settings.maxLogSize && logSize > settings.maxLogSize) {
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return tooMuchLogs();
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co_return tooMuchLogs();
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}
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(*logSink)(logLine);
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} else if (type == resSetPhase && ! fields.is_null()) {
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@ -1405,16 +1459,83 @@ Goal::WorkResult DerivationGoal::handleChildOutput(int fd, std::string_view data
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} else
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currentHookLine += c;
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}
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return StillAlive{};
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} catch (...) {
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co_return std::current_exception();
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}
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kj::Promise<Outcome<void, Goal::Finished>> DerivationGoal::handleChildOutput() noexcept
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try {
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assert(builderOutFD);
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void DerivationGoal::handleEOF(int fd)
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{
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auto builderIn = kj::heap<InputStream>(worker.aio.unixEventPort, builderOutFD->get());
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kj::Own<InputStream> hookIn;
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if (hook) {
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hookIn = kj::heap<InputStream>(worker.aio.unixEventPort, hook->fromHook.get());
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}
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auto handlers = handleChildStreams(*builderIn, hookIn.get()).attach(std::move(builderIn), std::move(hookIn));
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if (respectsTimeouts() && settings.buildTimeout != 0) {
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handlers = handlers.exclusiveJoin(
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worker.aio.provider->getTimer()
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.afterDelay(settings.buildTimeout.get() * kj::SECONDS)
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.then([this]() -> Outcome<void, Finished> {
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return timedOut(
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Error("%1% timed out after %2% seconds", name, settings.buildTimeout)
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);
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})
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);
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}
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return handlers.then([this](auto r) -> Outcome<void, Finished> {
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if (!currentLogLine.empty()) flushLine();
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return r;
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});
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} catch (...) {
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return {std::current_exception()};
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}
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kj::Promise<Outcome<void, Goal::Finished>> DerivationGoal::monitorForSilence() noexcept
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{
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while (true) {
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const auto stash = lastChildActivity;
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auto waitUntil = lastChildActivity + settings.maxSilentTime.get() * kj::SECONDS;
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co_await worker.aio.provider->getTimer().atTime(waitUntil);
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if (lastChildActivity == stash) {
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co_return timedOut(
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Error("%1% timed out after %2% seconds of silence", name, settings.maxSilentTime)
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);
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}
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}
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}
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kj::Promise<Outcome<void, Goal::Finished>>
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DerivationGoal::handleChildStreams(InputStream & builderIn, InputStream * hookIn) noexcept
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{
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lastChildActivity = worker.aio.provider->getTimer().now();
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auto handlers = kj::joinPromisesFailFast([&] {
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kj::Vector<kj::Promise<Outcome<void, Finished>>> parts{2};
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parts.add(handleBuilderOutput(builderIn));
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if (hookIn) {
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parts.add(handleHookOutput(*hookIn));
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}
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return parts.releaseAsArray();
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}());
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if (respectsTimeouts() && settings.maxSilentTime != 0) {
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handlers = handlers.exclusiveJoin(monitorForSilence().then([](auto r) {
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return kj::arr(std::move(r));
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}));
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}
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for (auto r : co_await handlers) {
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BOOST_OUTCOME_CO_TRYV(r);
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}
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co_return result::success();
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}
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void DerivationGoal::flushLine()
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{
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@ -8,6 +8,7 @@
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#include "store-api.hh"
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#include "pathlocks.hh"
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#include "goal.hh"
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#include <kj/time.h>
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namespace nix {
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@ -17,7 +18,7 @@ struct HookInstance;
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struct HookReplyBase {
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struct [[nodiscard]] Accept {
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std::set<int> fds;
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kj::Promise<Outcome<void, Goal::Finished>> promise;
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};
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struct [[nodiscard]] Decline {};
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struct [[nodiscard]] Postpone {};
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@ -70,6 +71,8 @@ struct InitialOutput {
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*/
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struct DerivationGoal : public Goal
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{
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struct InputStream;
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/**
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* Whether to use an on-disk .drv file.
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*/
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@ -242,7 +245,7 @@ struct DerivationGoal : public Goal
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BuildMode buildMode = bmNormal);
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virtual ~DerivationGoal() noexcept(false);
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Finished timedOut(Error && ex) override;
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Finished timedOut(Error && ex);
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std::string key() override;
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@ -312,13 +315,19 @@ struct DerivationGoal : public Goal
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virtual void cleanupPostOutputsRegisteredModeCheck();
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virtual void cleanupPostOutputsRegisteredModeNonCheck();
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/**
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* Callback used by the worker to write to the log.
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*/
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WorkResult handleChildOutput(int fd, std::string_view data) override;
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void handleEOF(int fd) override;
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protected:
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kj::TimePoint lastChildActivity = kj::minValue;
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kj::Promise<Outcome<void, Finished>> handleChildOutput() noexcept;
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kj::Promise<Outcome<void, Finished>>
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handleChildStreams(InputStream & builderIn, InputStream * hookIn) noexcept;
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kj::Promise<Outcome<void, Finished>> handleBuilderOutput(InputStream & in) noexcept;
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kj::Promise<Outcome<void, Finished>> handleHookOutput(InputStream & in) noexcept;
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kj::Promise<Outcome<void, Finished>> monitorForSilence() noexcept;
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Finished tooMuchLogs();
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void flushLine();
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public:
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/**
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* Wrappers around the corresponding Store methods that first consult the
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* derivation. This is currently needed because when there is no drv file
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@ -357,6 +366,11 @@ struct DerivationGoal : public Goal
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void waiteeDone(GoalPtr waitee) override;
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virtual bool respectsTimeouts()
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{
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return false;
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}
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StorePathSet exportReferences(const StorePathSet & storePaths);
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JobCategory jobCategory() const override {
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@ -69,24 +69,26 @@ try {
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some other error occurs), so it must not touch `this`. So put
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the shared state in a separate refcounted object. */
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downloadState = std::make_shared<DownloadState>();
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downloadState->outPipe.create();
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auto pipe = kj::newPromiseAndCrossThreadFulfiller<void>();
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downloadState->outPipe = kj::mv(pipe.fulfiller);
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downloadState->result =
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std::async(std::launch::async, [downloadState{downloadState}, id{id}, sub{sub}] {
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Finally updateStats([&]() { downloadState->outPipe->fulfill(); });
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ReceiveInterrupts receiveInterrupts;
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Finally updateStats([&]() { downloadState->outPipe.writeSide.close(); });
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return sub->queryRealisation(id);
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});
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state = &DrvOutputSubstitutionGoal::realisationFetched;
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return {WaitForWorld{{downloadState->outPipe.readSide.get()}, true}};
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return {WaitForWorld{
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pipe.promise.then([]() -> Outcome<void, Finished> { return result::success(); }), true
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}};
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} catch (...) {
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return {std::current_exception()};
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}
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kj::Promise<Result<Goal::WorkResult>> DrvOutputSubstitutionGoal::realisationFetched(bool inBuildSlot) noexcept
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try {
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worker.childTerminated(this);
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maintainRunningSubstitutions.reset();
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try {
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@ -45,7 +45,7 @@ class DrvOutputSubstitutionGoal : public Goal {
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struct DownloadState
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{
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Pipe outPipe;
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kj::Own<kj::CrossThreadPromiseFulfiller<void>> outPipe;
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std::future<std::shared_ptr<const Realisation>> result;
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};
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@ -74,8 +74,6 @@ public:
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kj::Promise<Result<WorkResult>> outPathValid(bool inBuildSlot) noexcept;
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kj::Promise<Result<WorkResult>> finished() noexcept;
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Finished timedOut(Error && ex) override { abort(); };
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std::string key() override;
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kj::Promise<Result<WorkResult>> work(bool inBuildSlot) noexcept override;
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@ -114,6 +114,8 @@ struct Goal
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public:
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struct Finished;
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struct [[nodiscard]] StillAlive {};
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struct [[nodiscard]] WaitForSlot {};
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struct [[nodiscard]] WaitForAWhile {};
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@ -122,7 +124,7 @@ public:
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Goals goals;
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};
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struct [[nodiscard]] WaitForWorld {
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std::set<int> fds;
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kj::Promise<Outcome<void, Finished>> promise;
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bool inBuildSlot;
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};
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struct [[nodiscard]] Finished {
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@ -167,20 +169,6 @@ public:
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virtual void waiteeDone(GoalPtr waitee) { }
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virtual WorkResult handleChildOutput(int fd, std::string_view data)
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{
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abort();
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}
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virtual void handleEOF(int fd)
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{
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}
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virtual bool respectsTimeouts()
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{
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return false;
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}
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void trace(std::string_view s);
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std::string getName() const
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@ -188,13 +176,6 @@ public:
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return name;
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}
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/**
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* Callback in case of a timeout. It should wake up its waiters,
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* get rid of any running child processes that are being monitored
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* by the worker (important!), etc.
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*/
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virtual Finished timedOut(Error && ex) = 0;
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virtual std::string key() = 0;
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virtual void cleanup() { }
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@ -121,8 +121,6 @@ LocalStore & LocalDerivationGoal::getLocalStore()
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void LocalDerivationGoal::killChild()
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{
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if (pid) {
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worker.childTerminated(this);
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/* If we're using a build user, then there is a tricky race
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condition: if we kill the build user before the child has
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done its setuid() to the build user uid, then it won't be
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@ -243,14 +241,14 @@ try {
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try {
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/* Okay, we have to build. */
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auto fds = startBuilder();
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auto promise = startBuilder();
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/* This state will be reached when we get EOF on the child's
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log pipe. */
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state = &DerivationGoal::buildDone;
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started();
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return {WaitForWorld{std::move(fds), true}};
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return {WaitForWorld{std::move(promise), true}};
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} catch (BuildError & e) {
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outputLocks.unlock();
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@ -390,7 +388,9 @@ void LocalDerivationGoal::cleanupPostOutputsRegisteredModeNonCheck()
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cleanupPostOutputsRegisteredModeCheck();
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}
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std::set<int> LocalDerivationGoal::startBuilder()
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// NOTE this one isn't noexcept because it's called from places that expect
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// exceptions to signal failure to launch. we should change this some time.
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kj::Promise<Outcome<void, Goal::Finished>> LocalDerivationGoal::startBuilder()
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{
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if ((buildUser && buildUser->getUIDCount() != 1)
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#if __linux__
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@ -779,7 +779,7 @@ std::set<int> LocalDerivationGoal::startBuilder()
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msgs.push_back(std::move(msg));
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}
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return {builderOutPTY.get()};
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return handleChildOutput();
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}
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|
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|||
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@ -218,7 +218,7 @@ struct LocalDerivationGoal : public DerivationGoal
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|||
/**
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||||
* Start building a derivation.
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||||
*/
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||||
std::set<int> startBuilder();
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||||
kj::Promise<Outcome<void, Finished>> startBuilder();
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||||
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||||
/**
|
||||
* Fill in the environment for the builder.
|
||||
|
|
|
|||
|
|
@ -208,16 +208,17 @@ try {
|
|||
|
||||
maintainRunningSubstitutions = worker.runningSubstitutions.addTemporarily(1);
|
||||
|
||||
outPipe.create();
|
||||
auto pipe = kj::newPromiseAndCrossThreadFulfiller<void>();
|
||||
outPipe = kj::mv(pipe.fulfiller);
|
||||
|
||||
thr = std::async(std::launch::async, [this]() {
|
||||
/* Wake up the worker loop when we're done. */
|
||||
Finally updateStats([this]() { outPipe->fulfill(); });
|
||||
|
||||
auto & fetchPath = subPath ? *subPath : storePath;
|
||||
try {
|
||||
ReceiveInterrupts receiveInterrupts;
|
||||
|
||||
/* Wake up the worker loop when we're done. */
|
||||
Finally updateStats([this]() { outPipe.writeSide.close(); });
|
||||
|
||||
Activity act(*logger, actSubstitute, Logger::Fields{worker.store.printStorePath(storePath), sub->getUri()});
|
||||
PushActivity pact(act.id);
|
||||
|
||||
|
|
@ -234,7 +235,9 @@ try {
|
|||
});
|
||||
|
||||
state = &PathSubstitutionGoal::finished;
|
||||
return {WaitForWorld{{outPipe.readSide.get()}, true}};
|
||||
return {WaitForWorld{
|
||||
pipe.promise.then([]() -> Outcome<void, Finished> { return result::success(); }), true
|
||||
}};
|
||||
} catch (...) {
|
||||
return {std::current_exception()};
|
||||
}
|
||||
|
|
@ -244,8 +247,6 @@ kj::Promise<Result<Goal::WorkResult>> PathSubstitutionGoal::finished(bool inBuil
|
|||
try {
|
||||
trace("substitute finished");
|
||||
|
||||
worker.childTerminated(this);
|
||||
|
||||
try {
|
||||
thr.get();
|
||||
} catch (std::exception & e) {
|
||||
|
|
@ -288,22 +289,13 @@ try {
|
|||
}
|
||||
|
||||
|
||||
Goal::WorkResult PathSubstitutionGoal::handleChildOutput(int fd, std::string_view data)
|
||||
{
|
||||
return StillAlive{};
|
||||
}
|
||||
|
||||
|
||||
void PathSubstitutionGoal::cleanup()
|
||||
{
|
||||
try {
|
||||
if (thr.valid()) {
|
||||
// FIXME: signal worker thread to quit.
|
||||
thr.get();
|
||||
worker.childTerminated(this);
|
||||
}
|
||||
|
||||
outPipe.close();
|
||||
} catch (...) {
|
||||
ignoreException();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -46,7 +46,7 @@ struct PathSubstitutionGoal : public Goal
|
|||
/**
|
||||
* Pipe for the substituter's standard output.
|
||||
*/
|
||||
Pipe outPipe;
|
||||
kj::Own<kj::CrossThreadPromiseFulfiller<void>> outPipe;
|
||||
|
||||
/**
|
||||
* The substituter thread.
|
||||
|
|
@ -90,8 +90,6 @@ public:
|
|||
);
|
||||
~PathSubstitutionGoal();
|
||||
|
||||
Finished timedOut(Error && ex) override { abort(); };
|
||||
|
||||
/**
|
||||
* We prepend "a$" to the key name to ensure substitution goals
|
||||
* happen before derivation goals.
|
||||
|
|
@ -112,11 +110,6 @@ public:
|
|||
kj::Promise<Result<WorkResult>> tryToRun(bool inBuildSlot) noexcept;
|
||||
kj::Promise<Result<WorkResult>> finished(bool inBuildSlot) noexcept;
|
||||
|
||||
/**
|
||||
* Callback used by the worker to write to the log.
|
||||
*/
|
||||
WorkResult handleChildOutput(int fd, std::string_view data) override;
|
||||
|
||||
/* Called by destructor, can't be overridden */
|
||||
void cleanup() override final;
|
||||
|
||||
|
|
|
|||
|
|
@ -7,10 +7,19 @@
|
|||
#include "signals.hh"
|
||||
#include "hook-instance.hh" // IWYU pragma: keep
|
||||
|
||||
#include <poll.h>
|
||||
|
||||
namespace nix {
|
||||
|
||||
namespace {
|
||||
struct ErrorHandler : kj::TaskSet::ErrorHandler
|
||||
{
|
||||
void taskFailed(kj::Exception && e) override
|
||||
{
|
||||
printError("unexpected async failure in Worker: %s", kj::str(e).cStr());
|
||||
abort();
|
||||
}
|
||||
} errorHandler;
|
||||
}
|
||||
|
||||
Worker::Worker(Store & store, Store & evalStore, kj::AsyncIoContext & aio)
|
||||
: act(*logger, actRealise)
|
||||
, actDerivations(*logger, actBuilds)
|
||||
|
|
@ -18,6 +27,7 @@ Worker::Worker(Store & store, Store & evalStore, kj::AsyncIoContext & aio)
|
|||
, store(store)
|
||||
, evalStore(evalStore)
|
||||
, aio(aio)
|
||||
, children(errorHandler)
|
||||
{
|
||||
/* Debugging: prevent recursive workers. */
|
||||
nrLocalBuilds = 0;
|
||||
|
|
@ -33,6 +43,7 @@ Worker::~Worker()
|
|||
are in trouble, since goals may call childTerminated() etc. in
|
||||
their destructors). */
|
||||
topGoals.clear();
|
||||
children.clear();
|
||||
|
||||
assert(expectedSubstitutions == 0);
|
||||
assert(expectedDownloadSize == 0);
|
||||
|
|
@ -209,7 +220,9 @@ void Worker::handleWorkResult(GoalPtr goal, Goal::WorkResult how)
|
|||
dep->waiters.insert(goal);
|
||||
}
|
||||
},
|
||||
[&](Goal::WaitForWorld & w) { childStarted(goal, w.fds, w.inBuildSlot); },
|
||||
[&](Goal::WaitForWorld & w) {
|
||||
childStarted(goal, std::move(w.promise), w.inBuildSlot);
|
||||
},
|
||||
[&](Goal::Finished & f) { goalFinished(goal, f); },
|
||||
},
|
||||
how
|
||||
|
|
@ -244,16 +257,22 @@ void Worker::wakeUp(GoalPtr goal)
|
|||
}
|
||||
|
||||
|
||||
void Worker::childStarted(GoalPtr goal, const std::set<int> & fds,
|
||||
void Worker::childStarted(GoalPtr goal, kj::Promise<Outcome<void, Goal::Finished>> promise,
|
||||
bool inBuildSlot)
|
||||
{
|
||||
Child child;
|
||||
child.goal = goal;
|
||||
child.goal2 = goal.get();
|
||||
child.fds = fds;
|
||||
child.timeStarted = child.lastOutput = steady_time_point::clock::now();
|
||||
child.inBuildSlot = inBuildSlot;
|
||||
children.emplace_back(child);
|
||||
children.add(promise
|
||||
.then([this, goal](auto result) {
|
||||
if (result.has_value()) {
|
||||
handleWorkResult(goal, Goal::ContinueImmediately{});
|
||||
} else if (result.has_error()) {
|
||||
handleWorkResult(goal, std::move(result.assume_error()));
|
||||
} else {
|
||||
childException = result.assume_exception();
|
||||
}
|
||||
})
|
||||
.attach(Finally{[this, goal, inBuildSlot] {
|
||||
childTerminated(goal, inBuildSlot);
|
||||
}}));
|
||||
if (inBuildSlot) {
|
||||
switch (goal->jobCategory()) {
|
||||
case JobCategory::Substitution:
|
||||
|
|
@ -269,13 +288,13 @@ void Worker::childStarted(GoalPtr goal, const std::set<int> & fds,
|
|||
}
|
||||
|
||||
|
||||
void Worker::childTerminated(Goal * goal)
|
||||
void Worker::childTerminated(GoalPtr goal, bool inBuildSlot)
|
||||
{
|
||||
auto i = std::find_if(children.begin(), children.end(),
|
||||
[&](const Child & child) { return child.goal2 == goal; });
|
||||
if (i == children.end()) return;
|
||||
if (childFinished) {
|
||||
childFinished->fulfill();
|
||||
}
|
||||
|
||||
if (i->inBuildSlot) {
|
||||
if (inBuildSlot) {
|
||||
switch (goal->jobCategory()) {
|
||||
case JobCategory::Substitution:
|
||||
assert(nrSubstitutions > 0);
|
||||
|
|
@ -290,8 +309,6 @@ void Worker::childTerminated(Goal * goal)
|
|||
}
|
||||
}
|
||||
|
||||
children.erase(i);
|
||||
|
||||
/* Wake up goals waiting for a build slot. */
|
||||
for (auto & j : wantingToBuild) {
|
||||
GoalPtr goal = j.lock();
|
||||
|
|
@ -390,11 +407,15 @@ Goals Worker::run(std::function<Goals (GoalFactory &)> req)
|
|||
if (topGoals.empty()) break;
|
||||
|
||||
/* Wait for input. */
|
||||
if (!children.empty() || !waitingForAWhile.empty())
|
||||
if (!children.isEmpty() || !waitingForAWhile.empty())
|
||||
waitForInput();
|
||||
else {
|
||||
assert(!awake.empty());
|
||||
}
|
||||
|
||||
if (childException) {
|
||||
std::rethrow_exception(childException);
|
||||
}
|
||||
}
|
||||
|
||||
/* If --keep-going is not set, it's possible that the main goal
|
||||
|
|
@ -402,7 +423,7 @@ Goals Worker::run(std::function<Goals (GoalFactory &)> req)
|
|||
--keep-going *is* set, then they must all be finished now. */
|
||||
assert(!settings.keepGoing || awake.empty());
|
||||
assert(!settings.keepGoing || wantingToBuild.empty());
|
||||
assert(!settings.keepGoing || children.empty());
|
||||
assert(!settings.keepGoing || children.isEmpty());
|
||||
|
||||
return _topGoals;
|
||||
}
|
||||
|
|
@ -411,140 +432,52 @@ void Worker::waitForInput()
|
|||
{
|
||||
printMsg(lvlVomit, "waiting for children");
|
||||
|
||||
auto childFinished = [&]{
|
||||
auto pair = kj::newPromiseAndFulfiller<void>();
|
||||
this->childFinished = kj::mv(pair.fulfiller);
|
||||
return kj::mv(pair.promise);
|
||||
}();
|
||||
|
||||
/* Process output from the file descriptors attached to the
|
||||
children, namely log output and output path creation commands.
|
||||
We also use this to detect child termination: if we get EOF on
|
||||
the logger pipe of a build, we assume that the builder has
|
||||
terminated. */
|
||||
|
||||
bool useTimeout = false;
|
||||
long timeout = 0;
|
||||
std::optional<long> timeout = 0;
|
||||
auto before = steady_time_point::clock::now();
|
||||
|
||||
/* If we're monitoring for silence on stdout/stderr, or if there
|
||||
is a build timeout, then wait for input until the first
|
||||
deadline for any child. */
|
||||
auto nearest = steady_time_point::max(); // nearest deadline
|
||||
if (settings.minFree.get() != 0)
|
||||
// Periodicallty wake up to see if we need to run the garbage collector.
|
||||
nearest = before + std::chrono::seconds(10);
|
||||
for (auto & i : children) {
|
||||
if (auto goal = i.goal.lock()) {
|
||||
if (!goal->respectsTimeouts()) continue;
|
||||
if (0 != settings.maxSilentTime)
|
||||
nearest = std::min(nearest, i.lastOutput + std::chrono::seconds(settings.maxSilentTime));
|
||||
if (0 != settings.buildTimeout)
|
||||
nearest = std::min(nearest, i.timeStarted + std::chrono::seconds(settings.buildTimeout));
|
||||
}
|
||||
}
|
||||
if (nearest != steady_time_point::max()) {
|
||||
timeout = std::max(1L, (long) std::chrono::duration_cast<std::chrono::seconds>(nearest - before).count());
|
||||
useTimeout = true;
|
||||
if (settings.minFree.get() != 0) {
|
||||
timeout = 10;
|
||||
}
|
||||
|
||||
/* If we are polling goals that are waiting for a lock, then wake
|
||||
up after a few seconds at most. */
|
||||
if (!waitingForAWhile.empty()) {
|
||||
useTimeout = true;
|
||||
if (lastWokenUp == steady_time_point::min() || lastWokenUp > before) lastWokenUp = before;
|
||||
timeout = std::max(1L,
|
||||
(long) std::chrono::duration_cast<std::chrono::seconds>(
|
||||
lastWokenUp + std::chrono::seconds(settings.pollInterval) - before).count());
|
||||
} else lastWokenUp = steady_time_point::min();
|
||||
|
||||
if (useTimeout)
|
||||
vomit("sleeping %d seconds", timeout);
|
||||
if (timeout)
|
||||
vomit("sleeping %d seconds", *timeout);
|
||||
|
||||
/* Use select() to wait for the input side of any logger pipe to
|
||||
become `available'. Note that `available' (i.e., non-blocking)
|
||||
includes EOF. */
|
||||
std::vector<struct pollfd> pollStatus;
|
||||
std::map<int, size_t> fdToPollStatus;
|
||||
for (auto & i : children) {
|
||||
for (auto & j : i.fds) {
|
||||
pollStatus.push_back((struct pollfd) { .fd = j, .events = POLLIN });
|
||||
fdToPollStatus[j] = pollStatus.size() - 1;
|
||||
}
|
||||
auto waitFor = [&] {
|
||||
if (timeout) {
|
||||
return aio.provider->getTimer()
|
||||
.afterDelay(*timeout * kj::SECONDS)
|
||||
.exclusiveJoin(kj::mv(childFinished));
|
||||
} else {
|
||||
return std::move(childFinished);
|
||||
}
|
||||
}();
|
||||
|
||||
if (poll(pollStatus.data(), pollStatus.size(),
|
||||
useTimeout ? timeout * 1000 : -1) == -1) {
|
||||
if (errno == EINTR) return;
|
||||
throw SysError("waiting for input");
|
||||
}
|
||||
waitFor.wait(aio.waitScope);
|
||||
|
||||
auto after = steady_time_point::clock::now();
|
||||
|
||||
/* Process all available file descriptors. FIXME: this is
|
||||
O(children * fds). */
|
||||
decltype(children)::iterator i;
|
||||
for (auto j = children.begin(); j != children.end(); j = i) {
|
||||
i = std::next(j);
|
||||
|
||||
checkInterrupt();
|
||||
|
||||
GoalPtr goal = j->goal.lock();
|
||||
assert(goal);
|
||||
|
||||
if (!goal->exitCode.has_value() &&
|
||||
0 != settings.maxSilentTime &&
|
||||
goal->respectsTimeouts() &&
|
||||
after - j->lastOutput >= std::chrono::seconds(settings.maxSilentTime))
|
||||
{
|
||||
handleWorkResult(
|
||||
goal,
|
||||
goal->timedOut(Error(
|
||||
"%1% timed out after %2% seconds of silence",
|
||||
goal->getName(),
|
||||
settings.maxSilentTime
|
||||
))
|
||||
);
|
||||
continue;
|
||||
}
|
||||
|
||||
else if (!goal->exitCode.has_value() &&
|
||||
0 != settings.buildTimeout &&
|
||||
goal->respectsTimeouts() &&
|
||||
after - j->timeStarted >= std::chrono::seconds(settings.buildTimeout))
|
||||
{
|
||||
handleWorkResult(
|
||||
goal,
|
||||
goal->timedOut(
|
||||
Error("%1% timed out after %2% seconds", goal->getName(), settings.buildTimeout)
|
||||
)
|
||||
);
|
||||
continue;
|
||||
}
|
||||
|
||||
std::set<int> fds2(j->fds);
|
||||
std::vector<unsigned char> buffer(4096);
|
||||
for (auto & k : fds2) {
|
||||
const auto fdPollStatusId = get(fdToPollStatus, k);
|
||||
assert(fdPollStatusId);
|
||||
assert(*fdPollStatusId < pollStatus.size());
|
||||
if (pollStatus.at(*fdPollStatusId).revents) {
|
||||
ssize_t rd = ::read(k, buffer.data(), buffer.size());
|
||||
// FIXME: is there a cleaner way to handle pt close
|
||||
// than EIO? Is this even standard?
|
||||
if (rd == 0 || (rd == -1 && errno == EIO)) {
|
||||
debug("%1%: got EOF", goal->getName());
|
||||
goal->handleEOF(k);
|
||||
handleWorkResult(goal, Goal::ContinueImmediately{});
|
||||
j->fds.erase(k);
|
||||
} else if (rd == -1) {
|
||||
if (errno != EINTR)
|
||||
throw SysError("%s: read failed", goal->getName());
|
||||
} else {
|
||||
printMsg(lvlVomit, "%1%: read %2% bytes",
|
||||
goal->getName(), rd);
|
||||
std::string_view data(charptr_cast<char *>(buffer.data()), rd);
|
||||
j->lastOutput = after;
|
||||
handleWorkResult(goal, goal->handleChildOutput(k, data));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!waitingForAWhile.empty() && lastWokenUp + std::chrono::seconds(settings.pollInterval) <= after) {
|
||||
lastWokenUp = after;
|
||||
for (auto & i : waitingForAWhile) {
|
||||
|
|
|
|||
|
|
@ -21,24 +21,6 @@ class DrvOutputSubstitutionGoal;
|
|||
|
||||
typedef std::chrono::time_point<std::chrono::steady_clock> steady_time_point;
|
||||
|
||||
/**
|
||||
* A mapping used to remember for each child process to what goal it
|
||||
* belongs, and file descriptors for receiving log data and output
|
||||
* path creation commands.
|
||||
*/
|
||||
struct Child
|
||||
{
|
||||
WeakGoalPtr goal;
|
||||
Goal * goal2; // ugly hackery
|
||||
std::set<int> fds;
|
||||
bool inBuildSlot;
|
||||
/**
|
||||
* Time we last got output on stdout/stderr
|
||||
*/
|
||||
steady_time_point lastOutput;
|
||||
steady_time_point timeStarted;
|
||||
};
|
||||
|
||||
/* Forward definition. */
|
||||
struct HookInstance;
|
||||
|
||||
|
|
@ -116,11 +98,6 @@ private:
|
|||
*/
|
||||
WeakGoals wantingToBuild;
|
||||
|
||||
/**
|
||||
* Child processes currently running.
|
||||
*/
|
||||
std::list<Child> children;
|
||||
|
||||
/**
|
||||
* Number of build slots occupied. This includes local builds but does not
|
||||
* include substitutions or remote builds via the build hook.
|
||||
|
|
@ -179,6 +156,8 @@ private:
|
|||
void goalFinished(GoalPtr goal, Goal::Finished & f);
|
||||
void handleWorkResult(GoalPtr goal, Goal::WorkResult how);
|
||||
|
||||
kj::Own<kj::PromiseFulfiller<void>> childFinished;
|
||||
|
||||
/**
|
||||
* Put `goal` to sleep until a build slot becomes available (which
|
||||
* might be right away).
|
||||
|
|
@ -212,9 +191,14 @@ private:
|
|||
* Registers a running child process. `inBuildSlot` means that
|
||||
* the process counts towards the jobs limit.
|
||||
*/
|
||||
void childStarted(GoalPtr goal, const std::set<int> & fds,
|
||||
void childStarted(GoalPtr goal, kj::Promise<Outcome<void, Goal::Finished>> promise,
|
||||
bool inBuildSlot);
|
||||
|
||||
/**
|
||||
* Unregisters a running child process.
|
||||
*/
|
||||
void childTerminated(GoalPtr goal, bool inBuildSlot);
|
||||
|
||||
/**
|
||||
* Pass current stats counters to the logger for progress bar updates.
|
||||
*/
|
||||
|
|
@ -240,6 +224,11 @@ public:
|
|||
Store & evalStore;
|
||||
kj::AsyncIoContext & aio;
|
||||
|
||||
private:
|
||||
kj::TaskSet children;
|
||||
std::exception_ptr childException;
|
||||
|
||||
public:
|
||||
struct HookState {
|
||||
std::unique_ptr<HookInstance> instance;
|
||||
|
||||
|
|
@ -302,11 +291,6 @@ private:
|
|||
GoalPtr makeGoal(const DerivedPath & req, BuildMode buildMode = bmNormal) override;
|
||||
|
||||
public:
|
||||
/**
|
||||
* Unregisters a running child process.
|
||||
*/
|
||||
void childTerminated(Goal * goal);
|
||||
|
||||
/**
|
||||
* Loop until the specified top-level goals have finished.
|
||||
*/
|
||||
|
|
|
|||
Loading…
Reference in a new issue