#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;
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 */