Cleanup: remove duplicated code in snapshot record command
[lttng-tools.git] / src / bin / lttng-sessiond / consumer.h
index 1fe7c89b5554a250981a43907ed77bc5fbcf9e95..c0f7fee360874d687c8939e11496f7e15e429ffe 100644 (file)
@@ -27,6 +27,7 @@
 
 struct snapshot;
 struct snapshot_output;
+struct ltt_session;
 
 enum consumer_dst_type {
        CONSUMER_DST_LOCAL,
@@ -66,26 +67,6 @@ struct consumer_socket {
 struct consumer_data {
        enum lttng_consumer_type type;
 
-       pthread_t thread;       /* Worker thread interacting with the consumer */
-
-       /* Conditions used by the consumer thread to indicate readiness. */
-       pthread_cond_t cond;
-       pthread_condattr_t condattr;
-       pthread_mutex_t cond_mutex;
-
-       /*
-        * This is a flag condition indicating that the consumer thread is ready
-        * and connected to the lttng-consumerd daemon. This flag MUST only be
-        * updated by locking the condition mutex above or before spawning a
-        * consumer thread.
-        *
-        * A value of 0 means that the thread is NOT ready. A value of 1 means that
-        * the thread consumer did connect successfully to the lttng-consumerd
-        * daemon. A negative value indicates that there is been an error and the
-        * thread has likely quit.
-        */
-       int consumer_thread_is_ready;
-
        /* Mutex to control consumerd pid assignation */
        pthread_mutex_t pid_mutex;
        pid_t pid;
@@ -167,14 +148,15 @@ struct consumer_output {
 
        /*
         * Subdirectory path name used for both local and network
-        * consumer (/kernel or /ust).
+        * consumer ("/kernel", "/ust", or empty).
         */
-       char subdir[LTTNG_PATH_MAX];
+       char domain_subdir[max(sizeof(DEFAULT_KERNEL_TRACE_DIR),
+                       sizeof(DEFAULT_UST_TRACE_DIR))];
 
        /*
         * Hashtable of consumer_socket index by the file descriptor value. For
-        * multiarch consumer support, we can have more than one consumer (ex: 32
-        * and 64 bit).
+        * multiarch consumer support, we can have more than one consumer (ex:
+        * 32 and 64 bit).
         */
        struct lttng_ht *socks;
 
@@ -215,20 +197,23 @@ struct consumer_output *consumer_create_output(enum consumer_dst_type type);
 struct consumer_output *consumer_copy_output(struct consumer_output *obj);
 void consumer_output_get(struct consumer_output *obj);
 void consumer_output_put(struct consumer_output *obj);
-int consumer_set_network_uri(struct consumer_output *obj,
+int consumer_set_network_uri(const struct ltt_session *session,
+               struct consumer_output *obj,
                struct lttng_uri *uri);
-int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd);
+int consumer_send_fds(struct consumer_socket *sock, const int *fds,
+               size_t nb_fd);
 int consumer_send_msg(struct consumer_socket *sock,
                struct lttcomm_consumer_msg *msg);
 int consumer_send_stream(struct consumer_socket *sock,
                struct consumer_output *dst, struct lttcomm_consumer_msg *msg,
-               int *fds, size_t nb_fd);
+               const int *fds, size_t nb_fd);
 int consumer_send_channel(struct consumer_socket *sock,
                struct lttcomm_consumer_msg *msg);
 int consumer_send_relayd_socket(struct consumer_socket *consumer_sock,
                struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer,
                enum lttng_stream_type type, uint64_t session_id,
-               char *session_name, char *hostname, int session_live_timer);
+               const char *session_name, const char *hostname,
+               int session_live_timer);
 int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock,
                int pipe);
 int consumer_send_destroy_relayd(struct consumer_socket *sock,
@@ -239,8 +224,6 @@ int consumer_recv_status_channel(struct consumer_socket *sock,
 void consumer_output_send_destroy_relayd(struct consumer_output *consumer);
 int consumer_create_socket(struct consumer_data *data,
                struct consumer_output *output);
-int consumer_set_subdir(struct consumer_output *consumer,
-               const char *session_name);
 
 void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg,
                uint64_t subbuf_size,
@@ -268,17 +251,17 @@ void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg,
                uint32_t ust_app_uid,
                int64_t blocking_timeout,
                const char *root_shm_path,
-               const char *shm_path);
-void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg,
-               enum lttng_consumer_command cmd,
+               const char *shm_path,
+               uint64_t trace_archive_id);
+void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg,
                uint64_t channel_key,
                uint64_t stream_key,
-               int cpu);
+               int32_t cpu,
+               uint64_t trace_archive_id);
 void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg,
                enum lttng_consumer_command cmd,
                uint64_t channel_key, uint64_t net_seq_idx);
-void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg,
-               enum lttng_consumer_command cmd,
+void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg,
                uint64_t channel_key,
                uint64_t session_id,
                const char *pathname,
@@ -311,12 +294,28 @@ int consumer_get_lost_packets(uint64_t session_id, uint64_t channel_key,
                struct consumer_output *consumer, uint64_t *lost);
 
 /* Snapshot command. */
-int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key,
-               struct snapshot_output *output, int metadata, uid_t uid, gid_t gid,
-               const char *session_path, int wait, uint64_t nb_packets_per_stream);
-
+enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket,
+               uint64_t key, const struct snapshot_output *output, int metadata,
+               uid_t uid, gid_t gid, const char *session_path, int wait,
+               uint64_t nb_packets_per_stream, uint64_t trace_archive_id);
+
+/* Rotation commands. */
+int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key,
+               uid_t uid, gid_t gid, struct consumer_output *output,
+               const char *domain_path, bool is_metadata_channel,
+               uint64_t new_chunk_id);
+int consumer_rotate_rename(struct consumer_socket *socket, uint64_t session_id,
+               const struct consumer_output *output, const char *old_path,
+               const char *new_path, uid_t uid, gid_t gid);
+int consumer_check_rotation_pending_local(struct consumer_socket *socket,
+               uint64_t session_id, uint64_t chunk_id);
+int consumer_check_rotation_pending_relay(struct consumer_socket *socket,
+               const struct consumer_output *output, uint64_t session_id,
+               uint64_t chunk_id);
 int consumer_mkdir(struct consumer_socket *socket, uint64_t session_id,
                const struct consumer_output *output, const char *path,
                uid_t uid, gid_t gid);
+int consumer_init(struct consumer_socket *socket,
+               const lttng_uuid sessiond_uuid);
 
 #endif /* _CONSUMER_H */
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