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authorRoland McGrath <roland@gnu.org>2001-08-24 03:21:51 +0000
committerRoland McGrath <roland@gnu.org>2001-08-24 03:21:51 +0000
commit0dce3d154c4af198a042bd2d1fd9241e6890a9b2 (patch)
tree5f8f58b370b2a254ba44f49bf42c6896663a1c54 /sysdeps/mach/bits/libc-lock.h
parent28cb9295720d06156b7c6b577086b199a47902d3 (diff)
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* sysdeps/mach/hurd/bits/libc-lock.h: New file, initially copied from
	sysdeps/mach version.  Implement counting ("recursive") mutexes
	on top of cthreads mutexes.
	* sysdeps/mach/hurd/bits/stdio-lock.h: File removed; generic now works.

	* sysdeps/generic/bits/stdio-lock.h (_IO_lock_initializer): Define to
	_LIBC_LOCK_RECURSIVE_INITIALIZER if defined, else do an #error.
	(__libc_cleanup_region_start, __libc_cleanup_region_end,
	__libc_clean_end): Define these to call the cleanup function after
	normal exit when they're supposed to.

	* sysdeps/mach/bits/libc-lock.h (__libc_cleanup_region_start):
	Take new first arg DOIT, a boolean saying whether to really install
	any cleanup handler.
	(__libc_cleanup_region_end): Do nothing if start's DOIT arg was zero.
	(__libc_cleanup_end): Likewise.
	* stdio-common/vfscanf.c (LOCK_STREAM): Pass new arg.
	* stdio-common/vfprintf.c (buffered_vfprintf, vfprintf): Likewise.
	* sysdeps/mach/hurd/bits/stdio-lock.h (_IO_cleanup_region_start):
	Likewise.
	* misc/syslog.c (vsyslog, openlog, closelog): Likewise.
	* sysdeps/generic/bits/stdio-lock.h
	(_IO_cleanup_region_start, _IO_cleanup_region_start_noarg): Likewise.
Diffstat (limited to 'sysdeps/mach/bits/libc-lock.h')
-rw-r--r--sysdeps/mach/bits/libc-lock.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/sysdeps/mach/bits/libc-lock.h b/sysdeps/mach/bits/libc-lock.h
index 57c36cba0b..2484297c8a 100644
--- a/sysdeps/mach/bits/libc-lock.h
+++ b/sysdeps/mach/bits/libc-lock.h
@@ -76,21 +76,21 @@ typedef cthread_key_t __libc_key_t;
 
 
 /* Start a critical region with a cleanup function */
-#define __libc_cleanup_region_start(FCT, ARG)				    \
+#define __libc_cleanup_region_start(DOIT, FCT, ARG)			    \
 {									    \
-  typeof (***(FCT)) *__save_FCT = FCT;					    \
+  typeof (***(FCT)) *__save_FCT = (DOIT) ? (FCT) : 0;			    \
   typeof (ARG) __save_ARG = ARG;					    \
   /* close brace is in __libc_cleanup_region_end below. */
 
 /* End a critical region started with __libc_cleanup_region_start. */
 #define __libc_cleanup_region_end(DOIT)					    \
-  if (DOIT)								    \
+  if ((DOIT) && __save_FCT != 0)					    \
     (*__save_FCT)(__save_ARG);						    \
 }
 
 /* Sometimes we have to exit the block in the middle.  */
 #define __libc_cleanup_end(DOIT)					    \
-  if (DOIT)								    \
+  if ((DOIT) && __save_FCT != 0)					    \
     (*__save_FCT)(__save_ARG);						    \