extern "C" {
#endif
-#ifndef LTTNG_PACKED
-#define LTTNG_PACKED __attribute__((__packed__))
-#endif
-
/*
* Event symbol length. Copied from LTTng kernel ABI.
*/
LTTNG_EVENT_CONTEXT_VPPID = 9,
LTTNG_EVENT_CONTEXT_PTHREAD_ID = 10,
LTTNG_EVENT_CONTEXT_HOSTNAME = 11,
+ LTTNG_EVENT_CONTEXT_IP = 12,
};
enum lttng_calibrate_type {
LTTNG_HEALTH_APP_REG,
LTTNG_HEALTH_KERNEL,
LTTNG_HEALTH_CONSUMER,
+ LTTNG_HEALTH_HT_CLEANUP,
+ LTTNG_HEALTH_APP_MANAGE_NOTIFY,
+ LTTNG_HEALTH_APP_REG_DISPATCH,
LTTNG_HEALTH_ALL,
};
+/* Buffer type for a specific domain. */
+enum lttng_buffer_type {
+ LTTNG_BUFFER_PER_PID, /* Only supported by UST being the default. */
+ LTTNG_BUFFER_PER_UID, /* Only supported by UST. */
+ LTTNG_BUFFER_GLOBAL, /* Only supported by the Kernel. */
+};
+
/*
* The structures should be initialized to zero before use.
*/
-#define LTTNG_DOMAIN_PADDING1 16
+#define LTTNG_DOMAIN_PADDING1 12
#define LTTNG_DOMAIN_PADDING2 LTTNG_SYMBOL_NAME_LEN + 32
struct lttng_domain {
enum lttng_domain_type type;
+ enum lttng_buffer_type buf_type;
char padding[LTTNG_DOMAIN_PADDING1];
union {
char exec_name[NAME_MAX];
char padding[LTTNG_DOMAIN_PADDING2];
} attr;
-} LTTNG_PACKED;
+};
/*
* Perf counter attributes
char name[LTTNG_SYMBOL_NAME_LEN];
char padding[LTTNG_PERF_EVENT_PADDING1];
-} LTTNG_PACKED;
+};
/*
* Event/channel context
struct lttng_event_perf_counter_ctx perf_counter;
char padding[LTTNG_EVENT_CONTEXT_PADDING2];
} u;
-} LTTNG_PACKED;
+};
/*
* Event probe.
char symbol_name[LTTNG_SYMBOL_NAME_LEN];
char padding[LTTNG_EVENT_PROBE_PADDING1];
-} LTTNG_PACKED;
+};
/*
* Function tracer
char symbol_name[LTTNG_SYMBOL_NAME_LEN];
char padding[LTTNG_EVENT_FUNCTION_PADDING1];
-} LTTNG_PACKED;
+};
/*
* Generic lttng event
char padding[LTTNG_EVENT_PADDING2];
} attr;
-} LTTNG_PACKED;
+};
enum lttng_event_field_type {
LTTNG_EVENT_FIELD_OTHER = 0,
char padding[LTTNG_EVENT_FIELD_PADDING];
struct lttng_event event;
int nowrite;
-} LTTNG_PACKED;
+};
/*
* Tracer channel attributes. For both kernel and user-space.
*
* The structures should be initialized to zero before use.
*/
-#define LTTNG_CHANNEL_ATTR_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
+#define LTTNG_CHANNEL_ATTR_PADDING1 LTTNG_SYMBOL_NAME_LEN + 12
struct lttng_channel_attr {
int overwrite; /* 1: overwrite, 0: discard */
uint64_t subbuf_size; /* bytes */
unsigned int switch_timer_interval; /* usec */
unsigned int read_timer_interval; /* usec */
enum lttng_event_output output; /* splice, mmap */
+ /* LTTng 2.1 padding limit */
+ uint64_t tracefile_size; /* bytes */
+ uint64_t tracefile_count; /* number of tracefiles */
+ /* LTTng 2.3 padding limit */
+ unsigned int live_timer_interval; /* usec */
char padding[LTTNG_CHANNEL_ATTR_PADDING1];
-} LTTNG_PACKED;
+};
/*
* Channel information structure. For both kernel and user-space.
struct lttng_channel_attr attr;
char padding[LTTNG_CHANNEL_PADDING1];
-} LTTNG_PACKED;
+};
#define LTTNG_CALIBRATE_PADDING1 16
struct lttng_calibrate {
enum lttng_calibrate_type type;
char padding[LTTNG_CALIBRATE_PADDING1];
-} LTTNG_PACKED;
+};
/*
* Basic session information.
*
* The structures should be initialized to zero before use.
*/
-#define LTTNG_SESSION_PADDING1 16
+#define LTTNG_SESSION_PADDING1 12
struct lttng_session {
char name[NAME_MAX];
/* The path where traces are written */
char path[PATH_MAX];
uint32_t enabled; /* enabled/started: 1, disabled/stopped: 0 */
+ uint32_t snapshot_mode;
+ unsigned int live_timer_interval; /* usec */
char padding[LTTNG_SESSION_PADDING1];
-} LTTNG_PACKED;
+};
/*
* Handle used as a context for commands.
struct lttng_domain domain;
char padding[LTTNG_HANDLE_PADDING1];
-} LTTNG_PACKED;
+};
/*
* Public LTTng control API
*/
extern int lttng_create_session(const char *name, const char *url);
+/*
+ * Create a tracing session that will exclusively be used for snapshot meaning
+ * the session will be in no output mode and every channel enabled for that
+ * session will be set in overwrite mode and in mmap output since splice is not
+ * supported.
+ *
+ * If an url is given, it will be used to create a default snapshot output
+ * using it as a destination. If NULL, no output will be defined and an
+ * add-output call will be needed.
+ *
+ * Name can't be NULL.
+ */
+extern int lttng_create_session_snapshot(const char *name,
+ const char *snapshot_url);
+
+/*
+ * Create a session exclusively used for live reading.
+ *
+ * In this mode, the switch-timer parameter is forced for each UST channel, a
+ * live-switch-timer is enabled for kernel channels, manually setting
+ * switch-timer is forbidden. Synchronization beacons are sent to the relayd,
+ * indexes are sent and metadata is checked for each packet.
+ *
+ * Returns LTTNG_OK on success or a negative error code.
+ */
+extern int lttng_create_session_live(const char *name, const char *url,
+ unsigned int timer_interval);
+
/*
* Destroy a tracing session.
*
/*
* Enable the consumer for a session and domain.
*/
-extern int lttng_enable_consumer(struct lttng_handle *handle);
+extern LTTNG_DEPRECATED("This call is now obsolete.")
+int lttng_enable_consumer(struct lttng_handle *handle);
/*
* Disable consumer for a session and domain.
*/
-extern int lttng_disable_consumer(struct lttng_handle *handle);
+extern LTTNG_DEPRECATED("This call is now obsolete.")
+int lttng_disable_consumer(struct lttng_handle *handle);
/*
* Check session daemon health for a specific component.
*
* Please see lttng-health-check(3) man page for more information.
*/
-extern int lttng_health_check(enum lttng_health_component c);
+extern LTTNG_DEPRECATED("This call is now obsolete.")
+int lttng_health_check(enum lttng_health_component c);
/*
* For a given session name, this call checks if the data is ready to be read
projects / lttng-tools.git / blobdiff