X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;f=src%2Futil.h;h=08a661b8d34572de7e02a37a28406f6335921d24;hb=e80cc109d6bf74bc76277fb1dc1bccda907b2564;hp=4563d506be1c1c0e9e28a1dfd4038ea425b6604c;hpb=d0e7f039e4ab206b9fd973c983e3fb841fcd2bf2;p=wimlib

diff --git a/src/util.h b/src/util.h
index 4563d506..08a661b8 100644
--- a/src/util.h
+++ b/src/util.h
@@ -30,6 +30,14 @@
 #	define HOT
 #endif /* __GNUC__ */
 
+#ifdef WITH_FUSE
+#define atomic_inc(ptr) \
+	__sync_fetch_and_add(ptr, 1)
+
+#define atomic_dec(ptr) \
+	__sync_sub_and_fetch(ptr, 1)
+#endif
+
 #ifndef _NTFS_TYPES_H
 typedef uint8_t  u8;
 typedef uint16_t u16;
@@ -52,6 +60,19 @@ typedef unsigned uint;
 #define swap(a, b) ({typeof(a) _a = a; (a) = (b); (b) = _a;})
 #endif
 
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:	the pointer to the member.
+ * @type:	the type of the container struct this is embedded in.
+ * @member:	the name of the member within the struct.
+ *
+ */
+#ifndef container_of
+#define container_of(ptr, type, member) ({			\
+	const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
+	(type *)( (char *)__mptr - offsetof(type,member) );})
+#endif
+
 #define ARRAY_LEN(array) (sizeof(array) / sizeof((array)[0]))
 
 #define ZERO_ARRAY(array) memset(array, 0, sizeof(array))