#define caa_likely(x) __builtin_expect(!!(x), 1)
#define caa_unlikely(x) __builtin_expect(!!(x), 0)
-#define cmm_barrier() asm volatile("" : : : "memory")
+#define cmm_barrier() __asm__ __volatile__ ("" : : : "memory")
/*
* Instruct the compiler to perform only a single access to a variable
* use is to mediate communication between process-level code and irq/NMI
* handlers, all running on the same CPU.
*/
-#define CMM_ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
+#define CMM_ACCESS_ONCE(x) (*(__volatile__ __typeof__(x) *)&(x))
#ifndef caa_max
#define caa_max(a,b) ((a)>(b)?(a):(b))
*/
#define caa_container_of(ptr, type, member) \
({ \
- const typeof(((type *) NULL)->member) * __ptr = (ptr); \
+ const __typeof__(((type *) NULL)->member) * __ptr = (ptr); \
(type *)((char *)__ptr - offsetof(type, member)); \
})
#define CAA_BUILD_BUG_ON_ZERO(cond) (sizeof(struct { int:-!!(cond); }))
-#define CAA_BUILD_BUG_ON(cond) ((void)BUILD_BUG_ON_ZERO(cond))
+#define CAA_BUILD_BUG_ON(cond) ((void)CAA_BUILD_BUG_ON_ZERO(cond))
/*
* __rcu is an annotation that documents RCU pointer accesses that need
#define URCU_FORCE_CAST(type, arg) ((type) (arg))
#endif
-#define caa_is_signed_type(type) (((type) (-1)) < 0)
+#define caa_is_signed_type(type) ((type) -1 < (type) 0)
-#define caa_cast_long_keep_sign(v) \
- (caa_is_signed_type(__typeof__(v)) ? (long) (v) : (unsigned long) (v))
+/*
+ * Sign-extend to long if needed, and output type is unsigned long.
+ */
+#define caa_cast_long_keep_sign(v) \
+ (caa_is_signed_type(__typeof__(v)) ? \
+ (unsigned long) (long) (v) : \
+ (unsigned long) (v))
+
+#if defined (__GNUC__) \
+ && ((__GNUC_MAJOR__ == 4) && (__GNUC_MINOR__ >= 5) \
+ || __GNUC_MAJOR__ >= 5)
+#define CDS_DEPRECATED(msg) \
+ __attribute__((deprecated(msg)))
+#else
+#define CDS_DEPRECATED(msg) \
+ __attribute__((deprecated))
+#endif
+
+#define CAA_ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+/*
+ * Don't allow compiling with buggy compiler.
+ */
+
+#ifdef __GNUC__
+# define URCU_GCC_VERSION (__GNUC__ * 10000 \
+ + __GNUC_MINOR__ * 100 \
+ + __GNUC_PATCHLEVEL__)
+
+/*
+ * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854
+ */
+# ifdef __ARMEL__
+# if URCU_GCC_VERSION >= 40800 && URCU_GCC_VERSION <= 40802
+# error Your gcc version produces clobbered frame accesses
+# endif
+# endif
+#endif
#endif /* _URCU_COMPILER_H */