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[thirdparty/glibc.git] / sysdeps / mach / i386 / machine-lock.h

diff --git a/sysdeps/mach/i386/machine-lock.h b/sysdeps/mach/i386/machine-lock.h
index 408c2b39cf41a7f843057ad4012082b15a08eb44..dc3a6af0c161167bb64da6db06d4b22530162ee3 100644 (file)
--- a/sysdeps/mach/i386/machine-lock.h
+++ b/sysdeps/mach/i386/machine-lock.h
@@ -1,5 +1,5 @@
 /* Machine-specific definition for spin locks.  i386 version.
-   Copyright (C) 1994-2014 Free Software Foundation, Inc.
+   Copyright (C) 1994-2019 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
@@ -14,7 +14,7 @@
 
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _MACHINE_LOCK_H
 #define        _MACHINE_LOCK_H
@@ -34,6 +34,9 @@ typedef volatile int __spin_lock_t;
 
 /* Unlock LOCK.  */
 
+extern void __spin_unlock (__spin_lock_t *__lock);
+
+#if defined __USE_EXTERN_INLINES && defined _LIBC
 _EXTERN_INLINE void
 __spin_unlock (__spin_lock_t *__lock)
 {
@@ -42,9 +45,13 @@ __spin_unlock (__spin_lock_t *__lock)
                       : "=&r" (__unlocked), "=m" (*__lock) : "0" (0)
                       : "memory");
 }
+#endif
 
 /* Try to lock LOCK; return nonzero if we locked it, zero if another has.  */
 
+extern int __spin_try_lock (__spin_lock_t *__lock);
+
+#if defined __USE_EXTERN_INLINES && defined _LIBC
 _EXTERN_INLINE int
 __spin_try_lock (__spin_lock_t *__lock)
 {
@@ -54,14 +61,19 @@ __spin_try_lock (__spin_lock_t *__lock)
                      : "memory");
   return !__locked;
 }
+#endif
 
 /* Return nonzero if LOCK is locked.  */
 
+extern int __spin_lock_locked (__spin_lock_t *__lock);
+
+#if defined __USE_EXTERN_INLINES && defined _LIBC
 _EXTERN_INLINE int
 __spin_lock_locked (__spin_lock_t *__lock)
 {
   return *__lock != 0;
 }
+#endif
 
 
 #endif /* machine-lock.h */