#include <common/common.h>
#include <common/sessiond-comm/sessiond-comm.h>
+#include <lttng/location-internal.h>
#include "session.h"
#include "utils.h"
#include "trace-ust.h"
+#include "timer.h"
/*
* NOTES:
pthread_mutex_lock(<t_session_list.lock);
}
+/*
+ * Try to acquire session list lock
+ */
+int session_trylock_list(void)
+{
+ return pthread_mutex_trylock(<t_session_list.lock);
+}
+
/*
* Release session list lock
*/
*data_port = output->dst.net.data.port;
}
+/*
+ * Get the location of the latest trace archive produced by a rotation.
+ *
+ * The caller must hold the session lock.
+ */
+struct lttng_trace_archive_location *session_get_trace_archive_location(
+ struct ltt_session *session)
+{
+ struct lttng_trace_archive_location *location = NULL;
+
+ if (session->rotation_state != LTTNG_ROTATION_STATE_COMPLETED) {
+ goto end;
+ }
+
+ switch (session_get_consumer_destination_type(session)) {
+ case CONSUMER_DST_LOCAL:
+ location = lttng_trace_archive_location_local_create(
+ session->rotation_chunk.current_rotate_path);
+ break;
+ case CONSUMER_DST_NET:
+ {
+ const char *hostname;
+ uint16_t control_port, data_port;
+
+ hostname = session_get_net_consumer_hostname(session);
+ session_get_net_consumer_ports(session,
+ &control_port,
+ &data_port);
+ location = lttng_trace_archive_location_relay_create(
+ hostname,
+ LTTNG_TRACE_ARCHIVE_LOCATION_RELAY_PROTOCOL_TYPE_TCP,
+ control_port, data_port,
+ session->rotation_chunk.current_rotate_path);
+ break;
+ }
+ default:
+ abort();
+ }
+end:
+ return location;
+}
+
/*
* Allocate the ltt_sessions_ht_by_id HT.
*
goto error;
}
- new_session->rotate_pending = false;
+ new_session->rotation_pending_local = false;
+ new_session->rotation_pending_relay = false;
new_session->rotation_state = LTTNG_ROTATION_STATE_NO_ROTATION;
- new_session->rotate_pending_relay = false;
- new_session->rotate_relay_pending_timer_enabled = false;
- new_session->rotate_timer = false;
+
+ new_session->rotation_pending_check_timer_enabled = false;
+ new_session->rotation_schedule_timer_enabled = false;
/* Add new session to the session list */
session_lock_list();
return 1;
}
}
+
+/*
+ * Set a session's rotation state and reset all associated state.
+ *
+ * This function resets the rotation state (check timers, pending
+ * flags, etc.) and sets the result of the last rotation. The result
+ * can be queries by a liblttng-ctl client.
+ *
+ * Be careful of the result passed to this function. For instance,
+ * on failure to launch a rotation, a client will expect the rotation
+ * state to be set to "NO_ROTATION". If an error occured while the
+ * rotation was "ONGOING", result should be set to "ERROR", which will
+ * allow a client to report it.
+ *
+ * Must be called with the session and session_list locks held.
+ */
+int session_reset_rotation_state(struct ltt_session *session,
+ enum lttng_rotation_state result)
+{
+ int ret = 0;
+
+ ASSERT_LOCKED(ltt_session_list.lock);
+ ASSERT_LOCKED(session->lock);
+
+ session->rotation_pending_local = false;
+ session->rotation_pending_relay = false;
+ session->rotated_after_last_stop = false;
+ session->rotation_state = result;
+ if (session->rotation_pending_check_timer_enabled) {
+ ret = timer_session_rotation_pending_check_stop(session);
+ }
+ return ret;
+}