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| author | Ben Gamari <bgamari.foss@gmail.com> | 2016-12-07 08:50:52 -0500 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2016-12-07 09:55:29 -0500 |
| commit | d70d452a38bed3321bfc3c14074a6b3e1f30a090 (patch) | |
| tree | f8da39d2d764b47670fb68bc6db5bc81d373bee7 | |
| parent | 9043a4002623679989a2fdc4e97d484a9d58d619 (diff) | |
| download | haskell-d70d452a38bed3321bfc3c14074a6b3e1f30a090.tar.gz | |
rts: Use pthread itimer implementation on Darwin
We want to avoid using SIGALRM whenever possible since we will interrupt
long-running system calls. See #10840.
Test Plan: Validate on Darwin
Reviewers: austin, erikd, simonmar
Reviewed By: simonmar
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2796
GHC Trac Issues: #10840
| -rw-r--r-- | rts/posix/Itimer.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/rts/posix/Itimer.c b/rts/posix/Itimer.c index ee93dd7719..59d34be5fb 100644 --- a/rts/posix/Itimer.c +++ b/rts/posix/Itimer.c @@ -30,6 +30,15 @@ #endif /* + * We want to avoid using the SIGALRM signals whenever possible as these signals + * interrupt system calls (see #10840) and can be overridden by user code. On + * Darwin we can use a dedicated thread and usleep. + */ +#if defined(darwin_HOST_OS) +#define USE_PTHREAD_FOR_ITIMER +#endif + +/* * On Linux in the threaded RTS we can use timerfd_* (introduced in Linux * 2.6.25) and a thread instead of alarm signals. It avoids the risk of * interrupting syscalls (see #10840) and the risk of being accidentally |