X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=ltt-sessiond%2Ftrace.h;h=444126ba01e4322c7727a3341f85fd13467e8e90;hp=a7eadcbc8d3081e6bdb9ddd82a9feed84346f22e;hb=333f285e479a22c99122aa92b988b10c597551e4;hpb=471d16937e160d99382c633db37d89605f483556

diff --git a/ltt-sessiond/trace.h b/ltt-sessiond/trace.h
index a7eadcbc8..444126ba0 100644
--- a/ltt-sessiond/trace.h
+++ b/ltt-sessiond/trace.h
@@ -19,13 +19,73 @@
 #ifndef _LTT_TRACE_H
 #define _LTT_TRACE_H
 
-#include "session.h"
+#include <limits.h>
+#include <urcu/list.h>
+#include "lttng-kernel.h"
 
-/* LTTng trace representation */
-struct ltt_kernel_trace {
+/* 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;
-	char name[NAME_MAX];
-	struct cds_list_head marker_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;
+};
+
+/* 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 */
@@ -43,10 +103,24 @@ struct ltt_ust_marker {
 	char *channel;
 };
 
-int get_trace_count_per_session(struct ltt_session *session);
-void get_traces_per_session(struct ltt_session *session, struct lttng_trace *traces);
-int ust_create_trace(int sock, pid_t pid);
-int ust_start_trace(int sock, pid_t pid);
-int ust_stop_trace(int sock, pid_t pid);
+/*
+ * 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 */