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.

ChangeLog

@@ -1,3 +1,15 @@
+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.
+
 Sun May 21 05:05:37 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
 
 	* elf/Makefile (ld.so): Use -nostartfiles in addition to

hurd/hurdsig.c

@@ -847,64 +847,78 @@ _hurd_internal_post_signal (struct hurd_sigstate *ss,
 
   /* We get here unless the signal was fatal.  We still hold SS->lock.
      Check for pending signals, and loop to post them.  */
-#define PENDING	(!_hurd_stopped && (pending = ss->pending & ~ss->blocked))
+  {
-  if (PENDING)
+    /* Return nonzero if SS has any signals pending we should worry about.
-    {
+       We don't worry about any pending signals if we are stopped, nor if
-    pending:
+       SS is in a critical section.  We are guaranteed to get a sig_post
-      for (signo = 1; signo < NSIG; ++signo)
+       message before any of them become deliverable: either the SIGCONT
-	if (__sigismember (&pending, signo))
+       signal, or a sig_post with SIGNO==0 as an explicit poll when the
-	  {
+       thread finishes its critical section.  */
-	    __sigdelset (&ss->pending, signo);
+    inline int signals_pending (void)
-	    sigcode = ss->pending_data[signo].code;
+      {
-	    sigerror = ss->pending_data[signo].error;
+	if (_hurd_stopped || ss->critical_section)
-	    __spin_unlock (&ss->lock);
+	  return 0;
-	    goto post_signal;
+	return pending = ss->pending & ~ss->blocked;
-	  }
+      }
-    }
 
-  /* No pending signals left undelivered for this thread.
+    if (signals_pending ())
-     If we were sent signal 0, we need to check for pending
+      {
-     signals for all threads.  */
+      pending:
-  if (signo == 0)
+	for (signo = 1; signo < NSIG; ++signo)
-    {
+	  if (__sigismember (&pending, signo))
-      __spin_unlock (&ss->lock);
+	    {
-      __mutex_lock (&_hurd_siglock);
+	      __sigdelset (&ss->pending, signo);
-      for (ss = _hurd_sigstates; ss != NULL; ss = ss->next)
+	      sigcode = ss->pending_data[signo].code;
-	{
+	      sigerror = ss->pending_data[signo].error;
-	  __spin_lock (&ss->lock);
+	      __spin_unlock (&ss->lock);
-	  if (PENDING)
+	      goto post_signal;
-	    goto pending;
+	    }
-	  __spin_unlock (&ss->lock);
+      }
-	}
+
-      __mutex_unlock (&_hurd_siglock);
+    /* No pending signals left undelivered for this thread.
-    }
+       If we were sent signal 0, we need to check for pending
-  else
+       signals for all threads.  */
-    {
+    if (signo == 0)
-      /* No more signals pending; SS->lock is still locked.
+      {
-	 Wake up any sigsuspend call that is blocking SS->thread.  */
+	__spin_unlock (&ss->lock);
-      if (ss->suspended != MACH_PORT_NULL)
+	__mutex_lock (&_hurd_siglock);
-	{
+	for (ss = _hurd_sigstates; ss != NULL; ss = ss->next)
-	  /* There is a sigsuspend waiting.  Tell it to wake up.  */
+	  {
-	  error_t err;
+	    __spin_lock (&ss->lock);
-	  mach_msg_header_t msg;
+	    if (signals_pending ())
-	  err = __mach_port_insert_right (__mach_task_self (),
+	      goto pending;
-					  ss->suspended, ss->suspended,
+	    __spin_unlock (&ss->lock);
-					  MACH_MSG_TYPE_MAKE_SEND);
+	  }
-	  assert_perror (err);
+	__mutex_unlock (&_hurd_siglock);
-	  msg.msgh_bits = MACH_MSGH_BITS (MACH_MSG_TYPE_MOVE_SEND, 0);
+      }
-	  msg.msgh_remote_port = ss->suspended;
+    else
-	  msg.msgh_local_port = MACH_PORT_NULL;
+      {
-	  /* These values do not matter.  */
+	/* No more signals pending; SS->lock is still locked.
-	  msg.msgh_id = 8675309; /* Jenny, Jenny.  */
+	   Wake up any sigsuspend call that is blocking SS->thread.  */
-	  msg.msgh_seqno = 17;	/* Random.  */
+	if (ss->suspended != MACH_PORT_NULL)
-	  ss->suspended = MACH_PORT_NULL;
+	  {
-	  err = __mach_msg (&msg, MACH_SEND_MSG, sizeof msg, 0,
+	    /* There is a sigsuspend waiting.  Tell it to wake up.  */
-			    MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE,
+	    error_t err;
-			    MACH_PORT_NULL);
+	    mach_msg_header_t msg;
-	  assert_perror (err);
+	    err = __mach_port_insert_right (__mach_task_self (),
-	}
+					    ss->suspended, ss->suspended,
-      __spin_unlock (&ss->lock);
+					    MACH_MSG_TYPE_MAKE_SEND);
-    }
+	    assert_perror (err);
+	    msg.msgh_bits = MACH_MSGH_BITS (MACH_MSG_TYPE_MOVE_SEND, 0);
+	    msg.msgh_remote_port = ss->suspended;
+	    msg.msgh_local_port = MACH_PORT_NULL;
+	    /* These values do not matter.  */
+	    msg.msgh_id = 8675309; /* Jenny, Jenny.  */
+	    msg.msgh_seqno = 17; /* Random.  */
+	    ss->suspended = MACH_PORT_NULL;
+	    err = __mach_msg (&msg, MACH_SEND_MSG, sizeof msg, 0,
+			      MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE,
+			      MACH_PORT_NULL);
+	    assert_perror (err);
+	  }
+	__spin_unlock (&ss->lock);
+      }
+  }
 
   /* All pending signals delivered to all threads.
      Now we can send the reply message even for signal 0.  */

manual/.cvsignore

@@ -3,7 +3,7 @@
 TODO COPYING* AUTHORS copyr-* copying.*
 glibc-*
 
-*.dvi* *.info* *.c.texi
+*.dvi* *.info* *.c.texi *.ps
 *.toc *.aux *.log
 *.cp *.cps *.fn *.fns *.vr *.vrs *.tp *.tps *.ky *.kys *.pg *.pgs
 

sysdeps/mach/hurd/fpathconf.c

@@ -0,0 +1,38 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 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
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+
+/* Get file-specific information about descriptor FD.  */
+long int
+__fpathconf (int fd, int name)
+{
+  error_t err;
+  long int value;
+
+  if (err = HURD_DPORT_USE (fd, __file_pathconf (port, name, &value)))
+    return __hurd_dfail (fd, err), -1L;
+
+  return value;
+}
+
+weak_alias (__fpathconf, fpathconf)

sysdeps/mach/hurd/pathconf.c

@@ -0,0 +1,41 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 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
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+
+/* Get file-specific information about FILE.  */
+long int
+__pathconf (const char *file, int name)
+{
+  error_t err;
+  file_t port = __file_name_lookup (file, 0, 0);
+  long int value;
+  if (port == MACH_PORT_NULL)
+    return -1L;
+  err = __file_pathconf (port, name, &value);
+  __mach_port_deallocate (__mach_task_self (), port);
+  if (err)
+    return __hurd_fail (err), -1L;
+  return value;
+}
+
+weak_alias (__pathconf, pathconf)