1 files changed, 90 insertions, 0 deletions
diff --git a/sysdeps/mach/bits/libc-lock.h b/sysdeps/mach/bits/libc-lock.h
new file mode 100644
index 0000000000..f3ce23a88c
--- /dev/null
+++ b/sysdeps/mach/bits/libc-lock.h
@@ -0,0 +1,90 @@
+/* libc-internal interface for mutex locks.  Mach cthreads version.
+   Copyright (C) 1996, 1997 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_LIBC_LOCK_H
+#define _BITS_LIBC_LOCK_H 1
+
+#ifdef _LIBC
+#include <cthreads.h>
+#define __libc_lock_t struct mutex
+#else
+typedef struct __libc_lock_opaque__ __libc_lock_t;
+#endif
+
+/* Define a lock variable NAME with storage class CLASS.  The lock must be
+   initialized with __libc_lock_init before it can be used (or define it
+   with __libc_lock_define_initialized, below).  Use `extern' for CLASS to
+   declare a lock defined in another module.  In public structure
+   definitions you must use a pointer to the lock structure (i.e., NAME
+   begins with a `*'), because its storage size will not be known outside
+   of libc.  */
+#define __libc_lock_define(CLASS,NAME) \
+  CLASS __libc_lock_t NAME;
+
+/* Define an initialized lock variable NAME with storage class CLASS.  */
+#define __libc_lock_define_initialized(CLASS,NAME) \
+  CLASS __libc_lock_t NAME = MUTEX_INITIALIZER;
+
+/* Initialize the named lock variable, leaving it in a consistent, unlocked
+   state.  */
+#define __libc_lock_init(NAME) __mutex_init (&(NAME))
+
+/* Finalize the named lock variable, which must be locked.  It cannot be
+   used again until __libc_lock_init is called again on it.  This must be
+   called on a lock variable before the containing storage is reused.  */
+#define __libc_lock_fini(NAME) __mutex_unlock (&(NAME))
+
+/* Lock the named lock variable.  */
+#define __libc_lock_lock(NAME) __mutex_lock (&(NAME))
+
+/* Lock the named lock variable.  */
+#define __libc_lock_trylock(NAME) (!__mutex_trylock (&(NAME)))
+
+/* Unlock the named lock variable.  */
+#define __libc_lock_unlock(NAME) __mutex_unlock (&(NAME))
+
+/* Start a critical region with a cleanup function */
+#define __libc_cleanup_region_start(FCT, ARG)				    \
+{									    \
+  typeof (FCT) __save_FCT = FCT;					    \
+  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)								    \
+    (*__save_FCT)(__save_ARG);						    \
+}
+
+
+#ifdef _LIBC
+/* We need portable names for some functions.  E.g., when they are
+   used as argument to __libc_cleanup_region_start.  */
+#define __libc_mutex_unlock __mutex_unlock
+#endif
+
+/* XXX until cthreads supports recursive locks */
+#define __libc_lock_define_initialized_recursive __libc_lock_define_initialized
+#define __libc_lock_init_recursive __libc_lock_init
+#define __libc_lock_fini_recursive __libc_lock_fini
+#define __libc_lock_trylock_recursive __libc_lock_trylock
+#define __libc_lock_unlock_recursive __libc_lock_unlock
+#define __libc_lock_lock_recursive __libc_lock_lock
+
+#endif	/* bits/libc-lock.h */