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* An quick and dirty hack to support distributed builds.

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This commit is contained in:
Eelco Dolstra 2004-05-12 09:35:51 +00:00
parent c8d3882cdc
commit 8c0b42f857
9 changed files with 92 additions and 13 deletions
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22
src/libstore/normalise.cc
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@ -302,6 +302,7 @@ bool Normaliser::startBuild(Path nePath)
/* Obtain locks on all output paths. The locks are automatically
released when we exit this function or Nix crashes. */
/* !!! BUG: this could block, which is not allowed. */
goal.outputLocks.lockPaths(goal.expr.derivation.outputs);
/* Now check again whether there is a successor. This is because
@ -364,6 +365,25 @@ bool Normaliser::startBuild(Path nePath)
return true;
}
/* !!! Hack */
Path buildHook = getEnv("NIX_BUILD_HOOK");
if (buildHook != "") {
printMsg(lvlChatty, format("using build hook `%1%'") % buildHook);
int status = system((buildHook + " " + goal.nePath + " 1>&2").c_str());
if (WIFEXITED(status)) {
int code = WEXITSTATUS(status);
if (code == 100) { /* == accepted */
printMsg(lvlChatty,
format("build hook succesfully realised output paths"));
finishGoal(goal);
return true;
} else if (code != 101) /* != declined */
throw Error(
format("build hook returned exit code %1%") % code);
} else throw Error(
format("build hook died with status %1%") % status);
}
/* Otherwise, start the build in a child process. */
startBuildChild(goal);
@ -660,7 +680,7 @@ void Normaliser::finishGoal(Goal & goal)
{
Path path = *i;
if (!pathExists(path))
throw Error(format("path `%1%' does not exist") % path);
throw Error(format("output path `%1%' does not exist") % path);
nf.closure.roots.insert(path);
makePathReadOnly(path);