Mercurial > hg > octave-jordi > gnulib-hg
diff m4/nanosleep.m4 @ 8227:8aa8914c86a3
* m4/nanosleep.m4 (gl_FUNC_NANOSLEEP): Check for a nanosleep that
loops on small arguments. This attempts to avoid the problem
Bruno Haible reported for AIX 4.3.2 in
<http://lists.gnu.org/archive/html/bug-gnulib/2007-02/msg00309.html>.
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Sat, 24 Feb 2007 10:01:49 +0000 |
| parents | b31580167c2b |
| children | 0ead70460e39 |
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--- a/m4/nanosleep.m4 +++ b/m4/nanosleep.m4 @@ -60,14 +60,20 @@ static struct timespec ts_sleep; static struct timespec ts_remaining; static struct sigaction act; + if (! nanosleep) + return 1; act.sa_handler = check_for_SIGALRM; - sigemptyset (&act.sa_mask); + sigemptyset (&act.sa_mask); sigaction (SIGALRM, &act, NULL); + ts_sleep.tv_sec = 0; + ts_sleep.tv_nsec = 1; + alarm (1); + if (nanosleep (&ts_sleep, NULL) != 0) + return 1; ts_sleep.tv_sec = TYPE_MAXIMUM (time_t); ts_sleep.tv_nsec = 999999999; alarm (1); if (nanosleep (&ts_sleep, &ts_remaining) == -1 && errno == EINTR - && nanosleep && TYPE_MAXIMUM (time_t) - 10 < ts_remaining.tv_sec) return 0; return 119;