Port timers to OpenBSD, plus check for timer failures.

OpenBSD problem reported by Han Boetes.
* profiler.c (setup_cpu_timer): Check for failure of timer_settime
and/or setitimer.
(Fprofiler_cpu_stop): Don't assume HAVE_SETITIMER.
* syssignal.h (HAVE_ITIMERSPEC): New macro.  This is for platforms
like OpenBSD, which has timer_settime but does not declare it.
OpenBSD does not define SIGEV_SIGNAL, so use that when deciding
whether to use itimerspec-related primitives.  All uses of
HAVE_TIMER_SETTIME replaced with HAVE_ITIMERSPEC.

1 files changed, 13 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 411ef633420..019913e27d3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2012-10-04  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Port timers to OpenBSD, plus check for timer failures.
+        OpenBSD problem reported by Han Boetes.
+        * profiler.c (setup_cpu_timer): Check for failure of timer_settime
+        and/or setitimer.
+        (Fprofiler_cpu_stop): Don't assume HAVE_SETITIMER.
+        * syssignal.h (HAVE_ITIMERSPEC): New macro.  This is for platforms
+        like OpenBSD, which has timer_settime but does not declare it.
+        OpenBSD does not define SIGEV_SIGNAL, so use that when deciding
+        whether to use itimerspec-related primitives.  All uses of
+        HAVE_TIMER_SETTIME replaced with HAVE_ITIMERSPEC.
+
 2012-09-30  Paul Eggert  <eggert@cs.ucla.edu>
 
         Merge from gnulib, incorporating: