Implement file-backed ring buffer

[lttng-ust.git] / libringbuffer / backend_internal.h

diff --git a/libringbuffer/backend_internal.h b/libringbuffer/backend_internal.h
index 3ab60a7fa327b6b58acb331ecbd2a1a4f74d0185..3c09382ed117b262f5f4baf275043271f069359d 100644 (file)
--- a/libringbuffer/backend_internal.h
+++ b/libringbuffer/backend_internal.h
@@ -45,7 +45,8 @@ int channel_backend_init(struct channel_backend *chanb,
                         const char *name,
                         const struct lttng_ust_lib_ring_buffer_config *config,
                         size_t subbuf_size,
-                        size_t num_subbuf, struct lttng_ust_shm_handle *handle);
+                        size_t num_subbuf, struct lttng_ust_shm_handle *handle,
+                        const char *shm_path);
 void channel_backend_free(struct channel_backend *chanb,
                          struct lttng_ust_shm_handle *handle);
 
@@ -447,6 +448,18 @@ do {                                                               \
                inline_memcpy(dest, src, __len);                \
 } while (0)
 
+/*
+ * write len bytes to dest with c
+ */
+static inline
+void lib_ring_buffer_do_memset(char *dest, int c, unsigned long len)
+{
+       unsigned long i;
+
+       for (i = 0; i < len; i++)
+               dest[i] = c;
+}
+
 /* arch-agnostic implementation */
 
 static inline int lttng_ust_fls(unsigned int x)