Refactoring: Channel structures

[lttng-ust.git] / liblttng-ust / ust-core.c

diff --git a/liblttng-ust/ust-core.c b/liblttng-ust/ust-core.c
index 0b1fcf0b787724781e3dc855f00b41e6393e1ed1..9f21b9772e665cafe5ecd6bb5f247dfd0fbe8e6b 100644 (file)
--- a/liblttng-ust/ust-core.c
+++ b/liblttng-ust/ust-core.c
@@ -116,7 +116,7 @@ size_t lttng_ust_dummy_get_size(struct lttng_ust_ctx_field *field, size_t offset
 
 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;
 
@@ -137,3 +137,56 @@ 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();
+       }
+}