tree 0e6f3a19d6f438528803a394f1df1000065d27c4
parent 8164c8ab3da4026f16b7a8d343b136ebfaeaed8e
author Paul Smith <psmith@gnu.org> 1457496434 -0500
committer Paul Smith <psmith@gnu.org> 1457498446 -0500

[SV 46261] Use pselect() for jobserver where supported.

* Makefile.am, configure.ac: Check for pselect() and sys/select.h.
* main.c (main): Block SIGCHLD if we have pselect() support.
* posixos.c (jobserver_acquire): If we support pselect() then use
it to query the jobserver pipe, while also listening for SIGCHLD.
Also pselect() supports a timeout so avoid alarm() calls.