X-Git-Url: http://git.hcoop.net/bpt/emacs.git/blobdiff_plain/f76840f36cf60feecaf21d55d24ace948800fef7..9e2a2647758db83b490e2993aa31cd4607305a82:/src/syssignal.h

diff --git a/src/syssignal.h b/src/syssignal.h
index 72ac1ed7f6..1aaae5562f 100644
--- a/src/syssignal.h
+++ b/src/syssignal.h
@@ -1,13 +1,13 @@
 /* syssignal.h - System-dependent definitions for signals.
    Copyright (C) 1993, 1999, 2001, 2002, 2003, 2004,
-                 2005, 2006, 2007  Free Software Foundation, Inc.
+                 2005, 2006, 2007, 2008  Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
-GNU Emacs is free software; you can redistribute it and/or modify
+GNU Emacs is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 3, or (at your option)
-any later version.
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
 
 GNU Emacs is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -15,14 +15,18 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
-along with GNU Emacs; see the file COPYING.  If not, write to
-the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA.  */
+along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 extern void init_signals P_ ((void));
 
-#ifdef HAVE_GTK_AND_PTHREAD
+#if defined (HAVE_GTK_AND_PTHREAD)
 #include <pthread.h>
+/* If defined, asynchronous signals delivered to a non-main thread are
+   forwarded to the main thread.  */
+#define FORWARD_SIGNAL_TO_MAIN_THREAD
+#endif
+
+#ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
 extern pthread_t main_thread;
 #endif
 
@@ -139,9 +143,7 @@ extern SIGMASKTYPE sigprocmask_set;
 { SIGMASKTYPE omask = sigblock (SIGFULLMASK); sigsetmask (omask & ~SIG); }
 #endif
 
-#ifndef BSD4_1
 #define sigfree() sigsetmask (SIGEMPTYMASK)
-#endif /* not BSD4_1 */
 
 #if defined (SIGINFO) && defined (BROKEN_SIGINFO)
 #undef SIGINFO
@@ -176,11 +178,6 @@ extern SIGMASKTYPE sigprocmask_set;
 # define NSIG NSIG_MINIMUM
 #endif
 
-#ifdef BSD4_1
-#define SIGIO SIGTINT
-/* sigfree is in sysdep.c */
-#endif /* BSD4_1 */
-
 /* On bsd, [man says] kill does not accept a negative number to kill a pgrp.
    Must do that using the killpg call.  */
 #ifdef BSD_SYSTEM
@@ -208,7 +205,7 @@ extern SIGMASKTYPE sigprocmask_set;
 char *strsignal ();
 #endif
 
-#ifdef HAVE_GTK_AND_PTHREAD
+#ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
 #define SIGNAL_THREAD_CHECK(signo)                                      \
   do {                                                                  \
     if (!pthread_equal (pthread_self (), main_thread))			\
@@ -227,8 +224,8 @@ char *strsignal ();
       }                                                                 \
    } while (0)
 
-#else /* not HAVE_GTK_AND_PTHREAD */
+#else /* not FORWARD_SIGNAL_TO_MAIN_THREAD */
 #define SIGNAL_THREAD_CHECK(signo)
-#endif /* not HAVE_GTK_AND_PTHREAD */
+#endif /* not FORWARD_SIGNAL_TO_MAIN_THREAD */
 /* arch-tag: 4580e86a-340d-4574-9e11-a742b6e1a152
    (do not change this comment) */