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Fri May 26 13:00:08 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* hurd/hurdsig.c (_hurd_internal_post_signal): Don't loop to check pending signals if the thread is in a critical section. It will send us a msg when it finishes. * sysdeps/mach/hurd/pathconf.c: New file. * sysdeps/mach/hurd/fpathconf.c: New file. * sysdeps/mach/hurd/sigaction.c: Only notify the proc server for SIGCHLD when the SA_NOCLDSTOP bit actually changes.
This commit is contained in:
Roland McGrath
parent
074d099ee3
commit
7cc645ed27
12
ChangeLog
12
ChangeLog
@ -1,3 +1,15 @@
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Fri May 26 13:00:08 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
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* hurd/hurdsig.c (_hurd_internal_post_signal): Don't loop to check
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pending signals if the thread is in a critical section. It will
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send us a msg when it finishes.
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* sysdeps/mach/hurd/pathconf.c: New file.
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* sysdeps/mach/hurd/fpathconf.c: New file.
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* sysdeps/mach/hurd/sigaction.c: Only notify the proc server for
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SIGCHLD when the SA_NOCLDSTOP bit actually changes.
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Sun May 21 05:05:37 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
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* elf/Makefile (ld.so): Use -nostartfiles in addition to
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128
hurd/hurdsig.c
128
hurd/hurdsig.c
@ -847,64 +847,78 @@ _hurd_internal_post_signal (struct hurd_sigstate *ss,
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/* We get here unless the signal was fatal. We still hold SS->lock.
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Check for pending signals, and loop to post them. */
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#define PENDING (!_hurd_stopped && (pending = ss->pending & ~ss->blocked))
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if (PENDING)
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{
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pending:
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for (signo = 1; signo < NSIG; ++signo)
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if (__sigismember (&pending, signo))
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{
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__sigdelset (&ss->pending, signo);
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sigcode = ss->pending_data[signo].code;
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sigerror = ss->pending_data[signo].error;
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__spin_unlock (&ss->lock);
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goto post_signal;
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}
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}
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{
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/* Return nonzero if SS has any signals pending we should worry about.
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We don't worry about any pending signals if we are stopped, nor if
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SS is in a critical section. We are guaranteed to get a sig_post
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message before any of them become deliverable: either the SIGCONT
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signal, or a sig_post with SIGNO==0 as an explicit poll when the
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thread finishes its critical section. */
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inline int signals_pending (void)
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{
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if (_hurd_stopped || ss->critical_section)
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return 0;
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return pending = ss->pending & ~ss->blocked;
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}
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/* No pending signals left undelivered for this thread.
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If we were sent signal 0, we need to check for pending
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signals for all threads. */
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if (signo == 0)
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{
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__spin_unlock (&ss->lock);
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__mutex_lock (&_hurd_siglock);
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for (ss = _hurd_sigstates; ss != NULL; ss = ss->next)
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{
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__spin_lock (&ss->lock);
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if (PENDING)
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goto pending;
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__spin_unlock (&ss->lock);
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}
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__mutex_unlock (&_hurd_siglock);
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}
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else
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{
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/* No more signals pending; SS->lock is still locked.
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Wake up any sigsuspend call that is blocking SS->thread. */
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if (ss->suspended != MACH_PORT_NULL)
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{
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/* There is a sigsuspend waiting. Tell it to wake up. */
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error_t err;
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mach_msg_header_t msg;
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err = __mach_port_insert_right (__mach_task_self (),
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ss->suspended, ss->suspended,
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MACH_MSG_TYPE_MAKE_SEND);
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assert_perror (err);
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msg.msgh_bits = MACH_MSGH_BITS (MACH_MSG_TYPE_MOVE_SEND, 0);
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msg.msgh_remote_port = ss->suspended;
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msg.msgh_local_port = MACH_PORT_NULL;
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/* These values do not matter. */
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msg.msgh_id = 8675309; /* Jenny, Jenny. */
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msg.msgh_seqno = 17; /* Random. */
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ss->suspended = MACH_PORT_NULL;
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err = __mach_msg (&msg, MACH_SEND_MSG, sizeof msg, 0,
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MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE,
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MACH_PORT_NULL);
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assert_perror (err);
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}
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__spin_unlock (&ss->lock);
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}
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if (signals_pending ())
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{
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pending:
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for (signo = 1; signo < NSIG; ++signo)
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if (__sigismember (&pending, signo))
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{
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__sigdelset (&ss->pending, signo);
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sigcode = ss->pending_data[signo].code;
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sigerror = ss->pending_data[signo].error;
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__spin_unlock (&ss->lock);
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goto post_signal;
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}
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}
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/* No pending signals left undelivered for this thread.
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If we were sent signal 0, we need to check for pending
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signals for all threads. */
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if (signo == 0)
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{
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__spin_unlock (&ss->lock);
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__mutex_lock (&_hurd_siglock);
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for (ss = _hurd_sigstates; ss != NULL; ss = ss->next)
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{
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__spin_lock (&ss->lock);
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if (signals_pending ())
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goto pending;
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__spin_unlock (&ss->lock);
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}
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__mutex_unlock (&_hurd_siglock);
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}
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else
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{
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/* No more signals pending; SS->lock is still locked.
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Wake up any sigsuspend call that is blocking SS->thread. */
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if (ss->suspended != MACH_PORT_NULL)
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{
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/* There is a sigsuspend waiting. Tell it to wake up. */
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error_t err;
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mach_msg_header_t msg;
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err = __mach_port_insert_right (__mach_task_self (),
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ss->suspended, ss->suspended,
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MACH_MSG_TYPE_MAKE_SEND);
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assert_perror (err);
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msg.msgh_bits = MACH_MSGH_BITS (MACH_MSG_TYPE_MOVE_SEND, 0);
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msg.msgh_remote_port = ss->suspended;
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msg.msgh_local_port = MACH_PORT_NULL;
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/* These values do not matter. */
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msg.msgh_id = 8675309; /* Jenny, Jenny. */
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msg.msgh_seqno = 17; /* Random. */
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ss->suspended = MACH_PORT_NULL;
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err = __mach_msg (&msg, MACH_SEND_MSG, sizeof msg, 0,
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MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE,
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MACH_PORT_NULL);
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assert_perror (err);
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}
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__spin_unlock (&ss->lock);
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}
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}
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/* All pending signals delivered to all threads.
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Now we can send the reply message even for signal 0. */
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@ -3,7 +3,7 @@
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TODO COPYING* AUTHORS copyr-* copying.*
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glibc-*
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*.dvi* *.info* *.c.texi
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*.dvi* *.info* *.c.texi *.ps
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*.toc *.aux *.log
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*.cp *.cps *.fn *.fns *.vr *.vrs *.tp *.tps *.ky *.kys *.pg *.pgs
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38
sysdeps/mach/hurd/fpathconf.c
Normal file
38
sysdeps/mach/hurd/fpathconf.c
Normal file
@ -0,0 +1,38 @@
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/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <errno.h>
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#include <stddef.h>
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#include <sys/stat.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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/* Get file-specific information about descriptor FD. */
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long int
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__fpathconf (int fd, int name)
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{
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error_t err;
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long int value;
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if (err = HURD_DPORT_USE (fd, __file_pathconf (port, name, &value)))
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return __hurd_dfail (fd, err), -1L;
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return value;
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}
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weak_alias (__fpathconf, fpathconf)
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41
sysdeps/mach/hurd/pathconf.c
Normal file
41
sysdeps/mach/hurd/pathconf.c
Normal file
@ -0,0 +1,41 @@
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/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <errno.h>
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#include <stddef.h>
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#include <sys/stat.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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/* Get file-specific information about FILE. */
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long int
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__pathconf (const char *file, int name)
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{
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error_t err;
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file_t port = __file_name_lookup (file, 0, 0);
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long int value;
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if (port == MACH_PORT_NULL)
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return -1L;
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err = __file_pathconf (port, name, &value);
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__mach_port_deallocate (__mach_task_self (), port);
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if (err)
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return __hurd_fail (err), -1L;
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return value;
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}
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weak_alias (__pathconf, pathconf)
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