#include <common/hashtable/hashtable.h>
#include <lttng/rotation.h>
#include <lttng/location.h>
+#include <lttng/lttng-error.h>
#include "snapshot.h"
#include "trace-kernel.h"
* iterate or/and do any actions on that list.
*/
pthread_mutex_t lock;
+ /*
+ * This condition variable is signaled on every removal from
+ * the session list.
+ */
+ pthread_cond_t removal_cond;
/*
* Session unique ID generator. The session list lock MUST be
*/
struct ltt_session {
char name[NAME_MAX];
+ bool has_auto_generated_name;
char hostname[HOST_NAME_MAX]; /* Local hostname. */
+ time_t creation_time;
struct ltt_kernel_session *kernel_session;
struct ltt_ust_session *ust_session;
struct urcu_ref ref;
pthread_mutex_t lock;
struct cds_list_head list;
uint64_t id; /* session unique identifier */
+ /* Indicates if the session has been added to the session list and ht.*/
+ bool published;
/* Indicates if a destroy command has been applied to this session. */
bool destroyed;
/* UID/GID of the user owning the session */
* copied into those sessions.
*/
struct consumer_output *consumer;
-
+ /*
+ * Indicates whether or not the user has specified an output directory
+ * or if it was configured using the default configuration.
+ */
+ bool has_user_specified_directory;
/* Did at least ONE start command has been triggered?. */
unsigned int has_been_started:1;
/*
/* Indicate if the session has to output the traces or not. */
unsigned int output_traces;
/*
- * This session is in snapshot mode. This means that every channel enabled
- * will be set in overwrite mode and mmap. It is considered exclusively for
- * snapshot purposes.
+ * This session is in snapshot mode. This means that channels enabled
+ * will be set in overwrite mode by default and must be in mmap
+ * output mode. Note that snapshots can be taken on a session that
+ * is not in "snapshot_mode". This parameter only affects channel
+ * creation defaults.
*/
unsigned int snapshot_mode;
+ /*
+ * A session that has channels that don't use 'mmap' output can't be
+ * used to capture snapshots. This is set to true whenever a
+ * 'splice' kernel channel is enabled.
+ */
+ bool has_non_mmap_channel;
/*
* Timer set when the session is created for live reading.
*/
*/
struct lttng_condition *rotate_condition;
struct lttng_trigger *rotate_trigger;
+ LTTNG_OPTIONAL(uint64_t) last_trace_chunk_id;
+ struct lttng_trace_chunk *current_trace_chunk;
};
/* Prototypes */
-int session_create(char *name, uid_t uid, gid_t gid);
-
+enum lttng_error_code session_create(const char *name, uid_t uid, gid_t gid,
+ struct ltt_session **out_session);
void session_lock(struct ltt_session *session);
void session_lock_list(void);
int session_trylock_list(void);
struct ltt_session *session_find_by_name(const char *name);
struct ltt_session *session_find_by_id(uint64_t id);
+
struct ltt_session_list *session_get_list(void);
+void session_list_wait_empty(void);
int session_access_ok(struct ltt_session *session, uid_t uid, gid_t gid);
int session_reset_rotation_state(struct ltt_session *session,
enum lttng_rotation_state result);
+enum lttng_error_code session_switch_trace_chunk(struct ltt_session *session,
+ const char *session_base_path_override,
+ const char *chunk_name_override);
+int session_set_trace_chunk(struct ltt_session *session,
+ struct lttng_trace_chunk *current_trace_chunk);
+
#endif /* _LTT_SESSION_H */