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authorRoland McGrath <roland@gnu.org>1999-07-21 16:50:21 +0000
committerRoland McGrath <roland@gnu.org>1999-07-21 16:50:21 +0000
commite26996aa991c92637310c12f37e266ad3931b289 (patch)
tree7b0ce9531400f1a4def71ab4be8df0be3f0ccb89 /hurd
parent6818bcaef77f8c1082a18bdb9e0626cd188ae87b (diff)
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1999-07-20 Mark Kettenis <kettenis@gnu.org>
* sysdeps/mach/_strerror.c: Include <libintl.h>. 1999-07-19 Roland McGrath <roland@baalperazim.frob.com> * hurd/hurdsig.c (_hurd_internal_post_signal): If a hurd_signal_preemptor matches but its `preemptor' field is null, use its `handler' field directly. This is to comply with behavior documented in <hurd/sigpreempt.h>.
Diffstat (limited to 'hurd')
-rw-r--r--hurd/hurdsig.c45
1 files changed, 31 insertions, 14 deletions
diff --git a/hurd/hurdsig.c b/hurd/hurdsig.c
index 1c1a229..f2a0120 100644
--- a/hurd/hurdsig.c
+++ b/hurd/hurdsig.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98 Free Software Foundation, Inc.
+/* Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -448,7 +448,6 @@ _hurd_internal_post_signal (struct hurd_sigstate *ss,
error_t err;
struct machine_thread_all_state thread_state;
enum { stop, ignore, core, term, handle } act;
- struct hurd_signal_preemptor *pe;
sighandler_t handler;
sigset_t pending;
int ss_suspended;
@@ -549,20 +548,38 @@ _hurd_internal_post_signal (struct hurd_sigstate *ss,
/* Check for a preempted signal. Preempted signals can arrive during
critical sections. */
+ {
+ inline sighandler_t try_preemptor (struct hurd_signal_preemptor *pe)
+ { /* PE cannot be null. */
+ do
+ {
+ if (HURD_PREEMPT_SIGNAL_P (pe, signo, detail->code))
+ {
+ if (pe->preemptor)
+ {
+ sighandler_t handler = (*pe->preemptor) (pe, ss,
+ &signo, detail);
+ if (handler != SIG_ERR)
+ return handler;
+ }
+ else
+ return pe->handler;
+ }
+ pe = pe->next;
+ } while (pe != 0);
+ return SIG_ERR;
+ }
- handler = SIG_ERR;
- for (pe = ss->preemptors; pe && handler == SIG_ERR; pe = pe->next)
- if (HURD_PREEMPT_SIGNAL_P (pe, signo, detail->code))
- handler = (*pe->preemptor) (pe, ss, &signo, detail);
+ handler = ss->preemptors ? try_preemptor (ss->preemptors) : SIG_ERR;
- if (handler == SIG_ERR && (__sigmask (signo) & _hurdsig_preempted_set))
- {
- __mutex_lock (&_hurd_siglock);
- for (pe = _hurdsig_preemptors; pe && handler == SIG_ERR; pe = pe->next)
- if (HURD_PREEMPT_SIGNAL_P (pe, signo, detail->code))
- handler = (*pe->preemptor) (pe, ss, &signo, detail);
- __mutex_unlock (&_hurd_siglock);
- }
+ /* If no thread-specific preemptor, check for a global one. */
+ if (handler == SIG_ERR && (__sigmask (signo) & _hurdsig_preempted_set))
+ {
+ __mutex_lock (&_hurd_siglock);
+ handler = try_preemptor (_hurdsig_preemptors);
+ __mutex_unlock (&_hurd_siglock);
+ }
+ }
ss_suspended = 0;