xnu-1228.12.14.tar.gz

[apple/xnu.git] / osfmk / kern / lock.h

diff --git a/osfmk/kern/lock.h b/osfmk/kern/lock.h
index c1b07bde552cf8eb7e737c2d2fc6e542a7d9b13d..eb5ed024e11152be18f474083b1ef817ef3f941d 100644 (file)
--- a/osfmk/kern/lock.h
+++ b/osfmk/kern/lock.h
@@ -85,6 +85,21 @@ extern void                  mutex_init(
                                                mutex_t         *mutex,
                                                unsigned short  tag);
 
+#ifdef i386
+extern void                    mutex_try_spin(
+                                               mutex_t         *mutex);
+
+extern void                    mutex_lock_spin(
+                                               mutex_t         *mutex);
+
+extern void                    mutex_convert_spin(
+                                               mutex_t         *mutex);
+#else
+#define        mutex_try_spin(l)       mutex_try(l)
+#define        mutex_lock_spin(l)      mutex_lock(l)
+#define        mutex_convert_spin(l)   do {} while (0)
+#endif
+
 #endif /* MACH_KERNEL_PRIVATE */
 
 extern mutex_t         *mutex_alloc(
@@ -102,7 +117,8 @@ extern void                 mutex_unlock(
 extern boolean_t       mutex_try(
                                                mutex_t         *mutex);
 
-extern void                    mutex_pause(void);
+extern void                    mutex_pause(uint32_t);
+extern void                    mutex_yield(mutex_t *);
 
 #define MA_OWNED        0x01
 #define MA_NOTOWNED     0x02