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Code Issues Releases Wiki Activity

Make bin/aphlict behave slightly better when forking

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Summary:
Due to how file descriptors get inherited when a process forks and the way
our script to start/restart stuff works, having bin/aphlict not close
STDOUT caused our script to hang. This diff provides a solution; however,
something like https://secure.phabricator.com/diffusion/PHU/browse/master/src/daemon/PhutilDaemonOverseer.php;b45eea975f6d9afc$127-129
may be better or more robust.

Test Plan:
Run our script that calls bin/aphlict in passthru() and see that it no
longer hangs.

Reviewers: epriestley, vrana

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4240
This commit is contained in:
Nick Harper 2012-12-20 10:38:13 -08:00
parent 776a240870
commit 53115007ff
1 changed files with 7 additions and 0 deletions
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7
support/aphlict/server/aphlict_launcher.php
View file

@ -89,6 +89,13 @@ if ($foreground) {
} else if ($pid) {
exit(0);
}
// When we fork, the child process will inherit its parent's set of open
// file descriptors. If the parent process of bin/aphlict is waiting for
// bin/aphlict's file descriptors to close, it will be stuck waiting on
// the daemonized process. (This happens if e.g. bin/aphlict is started
// in another script using passthru().)
fclose(STDOUT);
fclose(STDERR);
}