X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=libringbuffer%2Fbackend_internal.h;h=fe8f6eb611ebb5b11e59d3611e2b20956652bf97;hb=15b385c8a645128e3ed89f7f840c1441223097a4;hp=90088b89c7a8ffbfb81eac3efedad3cbefbb6f8e;hpb=a3492932cffa2c9dfbc9416792b20ce763708fc1;p=lttng-ust.git

diff --git a/libringbuffer/backend_internal.h b/libringbuffer/backend_internal.h
index 90088b89..fe8f6eb6 100644
--- a/libringbuffer/backend_internal.h
+++ b/libringbuffer/backend_internal.h
@@ -23,6 +23,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include <stddef.h>
+#include <stdint.h>
 #include <unistd.h>
 #include <urcu/compiler.h>
 
@@ -592,6 +594,28 @@ int update_read_sb_index(const struct lttng_ust_lib_ring_buffer_config *config,
 #define inline_memcpy(dest, src, n)	memcpy(dest, src, n)
 #endif
 
+static inline __attribute__((always_inline))
+void lttng_inline_memcpy(void *dest, const void *src,
+		unsigned long len)
+{
+	switch (len) {
+	case 1:
+		*(uint8_t *) dest = *(const uint8_t *) src;
+		break;
+	case 2:
+		*(uint16_t *) dest = *(const uint16_t *) src;
+		break;
+	case 4:
+		*(uint32_t *) dest = *(const uint32_t *) src;
+		break;
+	case 8:
+		*(uint64_t *) dest = *(const uint64_t *) src;
+		break;
+	default:
+		inline_memcpy(dest, src, len);
+	}
+}
+
 /*
  * Use the architecture-specific memcpy implementation for constant-sized
  * inputs, but rely on an inline memcpy for length statically unknown.
@@ -603,7 +627,7 @@ do {								\
 	if (__builtin_constant_p(len))				\
 		memcpy(dest, src, __len);			\
 	else							\
-		inline_memcpy(dest, src, __len);		\
+		lttng_inline_memcpy(dest, src, __len);		\
 } while (0)
 
 /*