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build-remote.pl: Enforce timeouts locally

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Don't pass --timeout / --max-silent-time to the remote builder.
Instead, let the local Nix process terminate the build if it exceeds a
timeout.  The remote builder will be killed as a side-effect.  This
gives better error reporting (since the timeout message from the
remote side wasn't properly propagated) and handles non-Nix problems
like SSH hangs.
This commit is contained in:
Eelco Dolstra 2013-05-09 17:17:17 +02:00
parent e93acab852
commit 69b8f9980f
2 changed files with 3 additions and 6 deletions
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5
scripts/build-remote.pl.in
View file

@ -46,7 +46,7 @@ sub all { $_ || return 0 for @_; 1 }
# Initialisation.
my $loadIncreased = 0;
my ($localSystem, $maxSilentTime, $printBuildTrace, $buildTimeout) = @ARGV;
my ($localSystem, $printBuildTrace) = @ARGV;
my $currentLoad = $ENV{"NIX_CURRENT_LOAD"};
my $conf = $ENV{"NIX_REMOTE_SYSTEMS"};
@ -258,8 +258,7 @@ close UPLOADLOCK;
# Perform the build.
my $buildFlags =
"--max-silent-time $maxSilentTime --option build-timeout $buildTimeout"
. " --fallback --add-root $rootsDir/\$PPID.out --quiet"
" --fallback --add-root $rootsDir/\$PPID.out --quiet"
. " --option build-keep-log false";
# We let the remote side kill its process group when the connection is

4
src/libstore/build.cc
View file

@ -695,9 +695,7 @@ HookInstance::HookInstance()
throw SysError("dupping builder's stdout/stderr");
execl(buildHook.c_str(), buildHook.c_str(), settings.thisSystem.c_str(),
(format("%1%") % settings.maxSilentTime).str().c_str(),
(format("%1%") % settings.printBuildTrace).str().c_str(),
(format("%1%") % settings.buildTimeout).str().c_str(),
NULL);
throw SysError(format("executing `%1%'") % buildHook);
@ -1646,7 +1644,7 @@ HookReply DerivationGoal::tryBuildHook()
set<int> fds;
fds.insert(hook->fromHook.readSide);
fds.insert(hook->builderOut.readSide);
worker.childStarted(shared_from_this(), hook->pid, fds, false, false);
worker.childStarted(shared_from_this(), hook->pid, fds, false, true);
if (settings.printBuildTrace)
printMsg(lvlError, format("@ build-started %1% %2% %3% %4%")