X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=ltt-sessiond%2Ftrace.h;h=444126ba01e4322c7727a3341f85fd13467e8e90;hb=4625876527524eafaa15a55ddcb68258e8235dd7;hp=9cbdaffd1dbb1da13f02d3ff80e6444b6b98df95;hpb=fda89c9b0a068c6d528e1ef9095476118708c181;p=lttng-tools.git

diff --git a/ltt-sessiond/trace.h b/ltt-sessiond/trace.h
index 9cbdaffd1..444126ba0 100644
--- a/ltt-sessiond/trace.h
+++ b/ltt-sessiond/trace.h
@@ -19,16 +19,79 @@
 #ifndef _LTT_TRACE_H
 #define _LTT_TRACE_H
 
-/* LTTng trace representation */
-struct ltt_lttng_trace {
+#include <limits.h>
+#include <urcu/list.h>
+#include "lttng-kernel.h"
+
+/* Default kernel channel attributes */
+#define DEFAULT_KERNEL_OVERWRITE            0
+#define DEFAULT_KERNEL_SUBBUF_SIZE          4096    /* bytes */
+#define DEFAULT_KERNEL_SUBBUF_NUM           8       /* Must always be a power of 2 */
+#define DEFAULT_KERNEL_SWITCH_TIMER         0       /* usec */
+#define DEFAULT_KERNEL_READ_TIMER           200     /* usec */
+
+/* Kernel event list */
+struct ltt_kernel_event_list {
+	struct cds_list_head head;
+};
+
+/* Channel stream list */
+struct ltt_kernel_stream_list {
+	struct cds_list_head head;
+};
+
+/* Channel list */
+struct ltt_kernel_channel_list {
+	struct cds_list_head head;
+};
+
+/* Kernel event */
+struct ltt_kernel_event {
+	int fd;
+	struct lttng_kernel_event *event;
+	struct cds_list_head list;
+};
+
+/* Kernel channel */
+struct ltt_kernel_channel {
+	int fd;
+	char *pathname;
+	unsigned int stream_count;
+	struct lttng_kernel_channel *channel;
+	struct ltt_kernel_event_list events_list;
+	struct ltt_kernel_stream_list stream_list;
+	struct cds_list_head list;
+};
+
+/* Metadata */
+struct ltt_kernel_metadata {
+	int fd;
+	char *pathname;
+	struct lttng_kernel_channel *conf;
+};
+
+/* Channel stream */
+struct ltt_kernel_stream {
+	int fd;
+	char *pathname;
+	int state;
 	struct cds_list_head list;
-	char trace_name[NAME_MAX];
-	struct cds_list_head marker_list;
+};
+
+/* Kernel session */
+struct ltt_kernel_session {
+	int fd;
+	int metadata_stream_fd;
+	unsigned int channel_count;
+	unsigned int stream_count_global;
+	struct ltt_kernel_metadata *metadata;
+	struct ltt_kernel_channel_list channel_list;
 };
 
 /* UST trace representation */
 struct ltt_ust_trace {
 	struct cds_list_head list;
+	char name[NAME_MAX];
 	int shmid;
 	pid_t pid;
 	struct cds_list_head markers;
@@ -40,4 +103,24 @@ struct ltt_ust_marker {
 	char *channel;
 };
 
+/*
+ * Create functions malloc() the data structure.
+ */
+struct ltt_kernel_session *trace_create_kernel_session(void);
+struct ltt_kernel_channel *trace_create_kernel_channel(void);
+struct ltt_kernel_event *trace_create_kernel_event(char *name,
+		enum lttng_kernel_instrumentation type);
+struct ltt_kernel_metadata *trace_create_kernel_metadata(void);
+struct ltt_kernel_stream *trace_create_kernel_stream(void);
+
+/*
+ * Destroy functions free() the data structure and remove from linked list if
+ * it's applies.
+ */
+void trace_destroy_kernel_session(struct ltt_kernel_session *session);
+void trace_destroy_kernel_metadata(struct ltt_kernel_metadata *metadata);
+void trace_destroy_kernel_channel(struct ltt_kernel_channel *channel);
+void trace_destroy_kernel_event(struct ltt_kernel_event *event);
+void trace_destroy_kernel_stream(struct ltt_kernel_stream *stream);
+
 #endif /* _LTT_TRACE_H */