X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=liblttng-ust%2Fust-core.c;h=089dd9107aa107f5398a344f556e3153c04cccde;hb=b62f8205216d20d7ef16b536efd81389dc6fdd2f;hp=19f62840d66fe73cff9a7fb557b53f3aad9bf4de;hpb=daacdbfc04fe07ecff0a0d1878b4f48d38912c78;p=lttng-ust.git

diff --git a/liblttng-ust/ust-core.c b/liblttng-ust/ust-core.c
index 19f62840..089dd910 100644
--- a/liblttng-ust/ust-core.c
+++ b/liblttng-ust/ust-core.c
@@ -9,6 +9,7 @@
 #include <stddef.h>
 #include <stdlib.h>
 
+#include "context-internal.h"
 #include "ust-events-internal.h"
 #include <usterr-signal-safe.h>
 #include "lttng-tracer-core.h"
@@ -86,8 +87,8 @@ void lttng_counter_transport_unregister(struct lttng_counter_transport *transpor
 /*
  * Needed by comm layer.
  */
-struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_session *session,
-		const struct lttng_ust_enum_desc *enum_desc)
+struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session,
+		struct lttng_ust_enum_desc *enum_desc)
 {
 	struct lttng_enum *_enum;
 	struct cds_hlist_head *head;
@@ -109,18 +110,18 @@ size_t lttng_ust_dummy_get_size(struct lttng_ust_ctx_field *field, size_t offset
 {
 	size_t size = 0;
 
-	size += lib_ring_buffer_align(offset, lttng_alignof(char));
+	size += lttng_ust_lib_ring_buffer_align(offset, lttng_ust_rb_alignof(char));
 	size += sizeof(char);		/* tag */
 	return size;
 }
 
 void lttng_ust_dummy_record(struct lttng_ust_ctx_field *field,
 		 struct lttng_ust_lib_ring_buffer_ctx *ctx,
-		 struct lttng_channel *chan)
+		 struct lttng_ust_channel_buffer *chan)
 {
 	char sel_char = (char) LTTNG_UST_DYNAMIC_TYPE_NONE;
 
-	lib_ring_buffer_align_ctx(ctx, lttng_alignof(sel_char));
+	lttng_ust_lib_ring_buffer_align_ctx(ctx, lttng_ust_rb_alignof(sel_char));
 	chan->ops->event_write(ctx, &sel_char, sizeof(sel_char));
 }
 
@@ -137,3 +138,56 @@ int lttng_context_is_app(const char *name)
 	}
 	return 1;
 }
+
+struct lttng_ust_channel_buffer *lttng_ust_alloc_channel_buffer(void)
+{
+	struct lttng_ust_channel_buffer *lttng_chan_buf;
+	struct lttng_ust_channel_common *lttng_chan_common;
+	struct lttng_ust_channel_buffer_private *lttng_chan_buf_priv;
+
+	lttng_chan_buf = zmalloc(sizeof(struct lttng_ust_channel_buffer));
+	if (!lttng_chan_buf)
+		goto lttng_chan_buf_error;
+	lttng_chan_buf->struct_size = sizeof(struct lttng_ust_channel_buffer);
+	lttng_chan_common = zmalloc(sizeof(struct lttng_ust_channel_common));
+	if (!lttng_chan_common)
+		goto lttng_chan_common_error;
+	lttng_chan_common->struct_size = sizeof(struct lttng_ust_channel_common);
+	lttng_chan_buf_priv = zmalloc(sizeof(struct lttng_ust_channel_buffer_private));
+	if (!lttng_chan_buf_priv)
+		goto lttng_chan_buf_priv_error;
+	lttng_chan_buf->parent = lttng_chan_common;
+	lttng_chan_common->type = LTTNG_UST_CHANNEL_TYPE_BUFFER;
+	lttng_chan_common->child = lttng_chan_buf;
+	lttng_chan_buf->priv = lttng_chan_buf_priv;
+	lttng_chan_common->priv = &lttng_chan_buf_priv->parent;
+	lttng_chan_buf_priv->pub = lttng_chan_buf;
+	lttng_chan_buf_priv->parent.pub = lttng_chan_common;
+
+	return lttng_chan_buf;
+
+lttng_chan_buf_priv_error:
+	free(lttng_chan_common);
+lttng_chan_common_error:
+	free(lttng_chan_buf);
+lttng_chan_buf_error:
+	return NULL;
+}
+
+void lttng_ust_free_channel_common(struct lttng_ust_channel_common *chan)
+{
+	switch (chan->type) {
+	case LTTNG_UST_CHANNEL_TYPE_BUFFER:
+	{
+		struct lttng_ust_channel_buffer *chan_buf;
+
+		chan_buf = (struct lttng_ust_channel_buffer *)chan->child;
+		free(chan_buf->parent);
+		free(chan_buf->priv);
+		free(chan_buf);
+		break;
+	}
+	default:
+		abort();
+	}
+}