#ifndef _LTT_TRACE_UST_H
#define _LTT_TRACE_UST_H
+#include <config.h>
#include <limits.h>
+#include <urcu.h>
#include <urcu/list.h>
-
#include <lttng/lttng.h>
-#include <lttng-ust.h>
-#include "traceable-app.h"
+#include "ust-ctl.h"
-/*
- * UST session list.
- */
-struct ltt_ust_session_list {
- unsigned int count;
- struct cds_list_head head;
-};
+#include "../hashtable/rculfhash.h"
-/* UST event list */
-struct ltt_ust_event_list {
+/* UST Stream list */
+struct ltt_ust_stream_list {
unsigned int count;
struct cds_list_head head;
};
-/* UST Channel list */
-struct ltt_ust_channel_list {
- unsigned int count;
- struct cds_list_head head;
+/* Context hash table nodes */
+struct ltt_ust_context {
+ struct lttng_ust_context ctx;
+ struct cds_lfht_node node;
};
/* UST event */
struct ltt_ust_event {
+ struct lttng_ust_event attr;
+ struct cds_lfht *ctx;
+ struct cds_lfht_node node;
+};
+
+/* UST stream */
+struct ltt_ust_stream {
int handle;
- int enabled;
- struct lttng_ust_context *ctx;
- struct lttng_ust_event *event;
- struct cds_list_head list;
+ char pathname[PATH_MAX];
+ struct object_data *obj;
+ struct cds_lfht_node node;
};
/* UST channel */
struct ltt_ust_channel {
- int handle;
- int enabled;
- char *name;
- char *trace_path; /* Trace file path name */
- struct lttng_ust_context *ctx;
- struct lttng_ust_channel *attr;
- struct ltt_ust_event_list events;
- struct cds_list_head list;
+ char name[LTTNG_UST_SYM_NAME_LEN];
+ char pathname[PATH_MAX];
+ struct lttng_ust_channel attr;
+ struct cds_lfht *ctx;
+ struct cds_lfht *events;
+ struct cds_lfht_node node;
};
/* UST Metadata */
struct ltt_ust_metadata {
int handle;
- char *trace_path; /* Trace file path name */
- struct lttng_ust_channel *attr;
+ struct object_data *obj;
+ char pathname[PATH_MAX]; /* Trace file path name */
+ struct lttng_ust_channel attr;
+ struct object_data *stream_obj;
+};
+
+/* UST domain global (LTTNG_DOMAIN_UST) */
+struct ltt_ust_domain_global {
+ struct cds_lfht *channels;
+};
+
+/* UST domain pid (LTTNG_DOMAIN_UST_PID) */
+struct ltt_ust_domain_pid {
+ pid_t pid;
+ struct cds_lfht *channels;
+ struct cds_lfht_node node;
+};
+
+/* UST domain exec name (LTTNG_DOMAIN_UST_EXEC_NAME) */
+struct ltt_ust_domain_exec {
+ char exec_name[LTTNG_UST_SYM_NAME_LEN];
+ struct cds_lfht *channels;
+ struct cds_lfht_node node;
};
/* UST session */
struct ltt_ust_session {
- int handle;
- int enabled;
- int uconsumer_fds_sent;
- char *path;
- struct ltt_traceable_app *app;
- struct ltt_ust_metadata *metadata;
- struct ltt_ust_channel_list channels;
- struct cds_list_head list;
+ int uid; /* Unique identifier of session */
+ int consumer_fds_sent;
+ int consumer_fd;
+ char pathname[PATH_MAX];
+ struct ltt_ust_domain_global domain_global;
+ /*
+ * Those two hash tables contains data for a specific UST domain and each
+ * contains a HT of channels. See ltt_ust_domain_exec and
+ * ltt_ust_domain_pid data structures.
+ */
+ struct cds_lfht *domain_pid;
+ struct cds_lfht *domain_exec;
};
+#ifdef CONFIG_LTTNG_TOOLS_HAVE_UST
+
/*
* Lookup functions. NULL is returned if not found.
*/
-struct ltt_ust_event *trace_ust_get_event_by_name(
- char *name, struct ltt_ust_channel *channel);
-struct ltt_ust_channel *trace_ust_get_channel_by_name(
- char *name, struct ltt_ust_session *session);
-struct ltt_ust_session *trace_ust_get_session_by_pid(pid_t pid,
- struct ltt_ust_session_list *session_list);
+struct ltt_ust_event *trace_ust_find_event_by_name(struct cds_lfht *ht,
+ char *name);
+struct ltt_ust_channel *trace_ust_find_channel_by_name(struct cds_lfht *ht,
+ char *name);
/*
* Create functions malloc() the data structure.
*/
-struct ltt_ust_session *trace_ust_create_session(char *path, pid_t pid);
-struct ltt_ust_channel *trace_ust_create_channel(char *name, char *path,
- struct lttng_ust_channel *attr);
+struct ltt_ust_session *trace_ust_create_session(char *path, unsigned int uid,
+ struct lttng_domain *domain);
+struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr,
+ char *path);
struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev);
struct ltt_ust_metadata *trace_ust_create_metadata(char *path);
void trace_ust_destroy_channel(struct ltt_ust_channel *channel);
void trace_ust_destroy_event(struct ltt_ust_event *event);
+#else
+
+static inline
+struct ltt_ust_event *trace_ust_find_event_by_name(struct cds_lfht *ht,
+ char *name)
+{
+ return NULL;
+}
+
+static inline
+struct ltt_ust_channel *trace_ust_find_channel_by_name(struct cds_lfht *ht,
+ char *name)
+{
+ return NULL;
+}
+
+static inline
+struct ltt_ust_session *trace_ust_create_session(char *path, pid_t pid,
+ struct lttng_domain *domain)
+{
+ return NULL;
+}
+static inline
+struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr,
+ char *path)
+{
+ return NULL;
+}
+static inline
+struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev)
+{
+ return NULL;
+}
+static inline
+struct ltt_ust_metadata *trace_ust_create_metadata(char *path)
+{
+ return NULL;
+}
+
+static inline
+void trace_ust_destroy_session(struct ltt_ust_session *session)
+{
+}
+
+static inline
+void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata)
+{
+}
+
+static inline
+void trace_ust_destroy_channel(struct ltt_ust_channel *channel)
+{
+}
+
+static inline
+void trace_ust_destroy_event(struct ltt_ust_event *event)
+{
+}
+
+#endif /* CONFIG_CONFIG_LTTNG_TOOLS_HAVE_UST */
+
#endif /* _LTT_TRACE_UST_H */
projects / lttng-tools.git / blobdiff