X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=libringbuffer%2Fbackend_internal.h;h=43d83c58bfd2415f6964377be3e7920906c08bcb;hb=8936b6c0add7eb6706e0a1ca50e03c446dda4006;hp=538176142bbdd462868217ceb4b0963eb284226f;hpb=c0c0989ab70574e09b2f7e8b48c2da6af664a849;p=lttng-ust.git

diff --git a/libringbuffer/backend_internal.h b/libringbuffer/backend_internal.h
index 53817614..43d83c58 100644
--- a/libringbuffer/backend_internal.h
+++ b/libringbuffer/backend_internal.h
@@ -14,7 +14,8 @@
 #include <unistd.h>
 #include <urcu/compiler.h>
 
-#include <lttng/ringbuffer-config.h>
+#include <lttng/ringbuffer-context.h>
+#include "ringbuffer-config.h"
 #include "backend_types.h"
 #include "frontend_types.h"
 #include "shm.h"
@@ -23,28 +24,45 @@
 
 /* Ring buffer and channel backend create/free */
 
+__attribute__((visibility("hidden")))
 int lib_ring_buffer_backend_create(struct lttng_ust_lib_ring_buffer_backend *bufb,
-				   struct channel_backend *chan, int cpu,
+				   struct channel_backend *chan,
+				   int cpu,
 				   struct lttng_ust_shm_handle *handle,
 				   struct shm_object *shmobj);
+
+__attribute__((visibility("hidden")))
 void channel_backend_unregister_notifiers(struct channel_backend *chanb);
+
+__attribute__((visibility("hidden")))
 void lib_ring_buffer_backend_free(struct lttng_ust_lib_ring_buffer_backend *bufb);
+
+__attribute__((visibility("hidden")))
 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,
 			 const int *stream_fds);
+
+__attribute__((visibility("hidden")))
 void channel_backend_free(struct channel_backend *chanb,
 			  struct lttng_ust_shm_handle *handle);
 
+__attribute__((visibility("hidden")))
 void lib_ring_buffer_backend_reset(struct lttng_ust_lib_ring_buffer_backend *bufb,
 				   struct lttng_ust_shm_handle *handle);
+
+__attribute__((visibility("hidden")))
 void channel_backend_reset(struct channel_backend *chanb);
 
+__attribute__((visibility("hidden")))
 int lib_ring_buffer_backend_init(void);
+
+__attribute__((visibility("hidden")))
 void lib_ring_buffer_backend_exit(void);
 
+__attribute__((visibility("hidden")))
 extern void _lib_ring_buffer_write(struct lttng_ust_lib_ring_buffer_backend *bufb,
 				   size_t offset, const void *src, size_t len,
 				   ssize_t pagecpy);
@@ -189,11 +207,12 @@ int lib_ring_buffer_backend_get_pages(const struct lttng_ust_lib_ring_buffer_con
 			struct lttng_ust_lib_ring_buffer_ctx *ctx,
 			struct lttng_ust_lib_ring_buffer_backend_pages **backend_pages)
 {
-	struct lttng_ust_lib_ring_buffer_backend *bufb = &ctx->buf->backend;
-	struct channel_backend *chanb = &ctx->chan->backend;
-	struct lttng_ust_shm_handle *handle = ctx->handle;
+	struct lttng_ust_lib_ring_buffer_ctx_private *ctx_private = ctx->priv;
+	struct lttng_ust_lib_ring_buffer_backend *bufb = &ctx_private->buf->backend;
+	struct channel_backend *chanb = &ctx_private->chan->backend;
+	struct lttng_ust_shm_handle *handle = ctx_private->chan->handle;
 	size_t sbidx;
-	size_t offset = ctx->buf_offset;
+	size_t offset = ctx_private->buf_offset;
 	struct lttng_ust_lib_ring_buffer_backend_subbuffer *wsb;
 	struct lttng_ust_lib_ring_buffer_backend_pages_shmp *rpages;
 	unsigned long sb_bindex, id;
@@ -209,7 +228,7 @@ int lib_ring_buffer_backend_get_pages(const struct lttng_ust_lib_ring_buffer_con
 	rpages = shmp_index(handle, bufb->array, sb_bindex);
 	if (caa_unlikely(!rpages))
 		return -1;
-	CHAN_WARN_ON(ctx->chan,
+	CHAN_WARN_ON(ctx_private->chan,
 		     config->mode == RING_BUFFER_OVERWRITE
 		     && subbuffer_id_is_noref(config, id));
 	_backend_pages = shmp(handle, rpages->shmp);
@@ -225,10 +244,7 @@ struct lttng_ust_lib_ring_buffer_backend_pages *
 	lib_ring_buffer_get_backend_pages_from_ctx(const struct lttng_ust_lib_ring_buffer_config *config,
 		struct lttng_ust_lib_ring_buffer_ctx *ctx)
 {
-	if (caa_unlikely(ctx->ctx_len
-			< sizeof(struct lttng_ust_lib_ring_buffer_ctx)))
-		return NULL;
-	return ctx->backend_pages;
+	return ctx->priv->backend_pages;
 }
 
 /*
@@ -271,7 +287,7 @@ void subbuffer_consume_record(const struct lttng_ust_lib_ring_buffer_config *con
 			      struct lttng_ust_shm_handle *handle)
 {
 	unsigned long sb_bindex;
-	struct channel *chan;
+	struct lttng_ust_lib_ring_buffer_channel *chan;
 	struct lttng_ust_lib_ring_buffer_backend_pages_shmp *pages_shmp;
 	struct lttng_ust_lib_ring_buffer_backend_pages *backend_pages;
 
@@ -491,7 +507,7 @@ void lib_ring_buffer_set_noref_offset(const struct lttng_ust_lib_ring_buffer_con
 				      struct lttng_ust_shm_handle *handle)
 {
 	struct lttng_ust_lib_ring_buffer_backend_subbuffer *wsb;
-	struct channel *chan;
+	struct lttng_ust_lib_ring_buffer_channel *chan;
 
 	if (config->mode != RING_BUFFER_OVERWRITE)
 		return;
@@ -541,7 +557,7 @@ int update_read_sb_index(const struct lttng_ust_lib_ring_buffer_config *config,
 		return -EPERM;
 
 	if (config->mode == RING_BUFFER_OVERWRITE) {
-		struct channel *chan;
+		struct lttng_ust_lib_ring_buffer_channel *chan;
 
 		/*
 		 * Exchange the target writer subbuffer with our own unused
@@ -620,7 +636,7 @@ do {								\
  * write len bytes to dest with c
  */
 static inline
-void lib_ring_buffer_do_memset(char *dest, int c, unsigned long len)
+void lib_ring_buffer_do_memset(char *dest, char c, unsigned long len)
 {
 	unsigned long i;