diff options
Diffstat (limited to 'hurd/hurdsig.c')
| -rw-r--r-- | hurd/hurdsig.c | 45 |
1 files changed, 31 insertions, 14 deletions
diff --git a/hurd/hurdsig.c b/hurd/hurdsig.c index 1c1a22932c..f2a01201b5 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; |