* flow.c (find_unreachable_blocks): New function.

[pf3gnuchains/gcc-fork.git] / gcc / gthr.h

diff --git a/gcc/gthr.h b/gcc/gthr.h
index 9c53654..7cfa8ed 100644 (file)
--- a/gcc/gthr.h
+++ b/gcc/gthr.h
@@ -1,6 +1,6 @@
-/* Threads compatibily routines for libgcc2.  */
+/* Threads compatibility routines for libgcc2.  */
 /* Compile this one with gcc.  */
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -26,8 +26,8 @@ Boston, MA 02111-1307, USA.  */
    This exception does not however invalidate any other reasons why
    the executable file might be covered by the GNU General Public License.  */
 
-#ifndef __gthr_h
-#define __gthr_h
+#ifndef GCC_GTHR_H
+#define GCC_GTHR_H
 
 /* If this file is compiled with threads support, it must
        #define __GTHREADS 1
@@ -48,6 +48,12 @@ Boston, MA 02111-1307, USA.  */
      __GTHREAD_MUTEX_INIT
                to initialize __gthread_mutex_t to get a fast
                non-recursive mutex.
+     __GTHREAD_MUTEX_INIT_FUNCTION
+               some systems can't initalize a mutex without a
+               function call.  On such systems, define this to a
+               function which looks like this:
+                 void __GTHREAD_MUTEX_INIT_FUNCTION (__gthread_mutex_t *)
+               Don't define __GTHREAD_MUTEX_INIT in this case
 
    The threads interface must define the following static functions:
 
@@ -83,10 +89,12 @@ Boston, MA 02111-1307, USA.  */
 #include "gthr-solaris.h"
 
 /* Include GTHREAD_FILE if one is defined. */
-#elif SUPPORTS_WEAK && HAVE_GTHR_DEFAULT
+#elif defined(HAVE_GTHR_DEFAULT)
+#if SUPPORTS_WEAK
 #ifndef GTHREAD_USE_WEAK
 #define GTHREAD_USE_WEAK 1
 #endif
+#endif
 #include "gthr-default.h"
 
 /* Fallback to single thread definitions. */
@@ -94,4 +102,4 @@ Boston, MA 02111-1307, USA.  */
 #include "gthr-single.h"
 #endif
 
-#endif /* not __gthr_h */
+#endif /* ! GCC_GTHR_H */