Port ring buffer to userspace, part 1

[lttng-ust.git] / include / ust / core.h

diff --git a/include/ust/core.h b/include/ust/core.h
index d0e2750f1fab74253c9f2bcd2c843ccf7943241c..8c1c490eedde18b0615741ee1ec1a9773c0589ab 100644 (file)
--- a/include/ust/core.h
+++ b/include/ust/core.h
@@ -24,42 +24,6 @@
 #define likely(x)      __builtin_expect(!!(x), 1)
 #define unlikely(x)    __builtin_expect(!!(x), 0)
 
-#ifndef HAVE_EFFICIENT_UNALIGNED_ACCESS
-
-/*
- * Calculate the offset needed to align the type.
- * size_of_type must be non-zero.
- */
-static inline unsigned int ltt_align(size_t align_drift, size_t size_of_type)
-{
-       size_t alignment = min(sizeof(void *), size_of_type);
-       return (alignment - align_drift) & (alignment - 1);
-}
-/* Default arch alignment */
-#define LTT_ALIGN
-
-static inline int ltt_get_alignment(void)
-{
-       return sizeof(void *);
-}
-
-#else /* HAVE_EFFICIENT_UNALIGNED_ACCESS */
-
-static inline unsigned int ltt_align(size_t align_drift,
-                size_t size_of_type)
-{
-       return 0;
-}
-
-#define LTT_ALIGN __attribute__((packed))
-
-static inline int ltt_get_alignment(void)
-{
-       return 0;
-}
-#endif /* HAVE_EFFICIENT_UNALIGNED_ACCESS */
-
-
 /* ARRAYS */
 
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
@@ -118,7 +82,25 @@ static inline long IS_ERR(const void *ptr)
 
 /* MALLOCATION */
 
-#define zmalloc(s) calloc(1, s)
+#include <stdlib.h>
+
+static inline
+void *zmalloc(size_t len)
+{
+       return calloc(1, len);
+}
+
+static inline
+void *malloc_align(size_t len)
+{
+       return malloc(ALIGN(len, CAA_CACHE_LINE_SIZE));
+}
+
+static inline
+void *zmalloc_align(size_t len)
+{
+       return calloc(1, ALIGN(len, CAA_CACHE_LINE_SIZE));
+}
 
 /* MATH */
 
@@ -146,4 +128,12 @@ static __inline__ int get_count_order(unsigned int count)
         const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
         (type *)( (char *)__mptr - offsetof(type,member) );})
 
+#ifndef inline_memcpy
+#define inline_memcpy memcpy
+#endif
+
+#ifndef __same_type
+#define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
+#endif
+
 #endif /* UST_CORE_H */