+ // FIXME - assumes only one clock
+ a_event = bt_notification_event_get_event(a);
+ b_event = bt_notification_event_get_event(b);
+ assert(a_event);
+ assert(b_event);
+
+ a_stream = bt_ctf_event_get_stream(a_event);
+ assert(a_stream);
+ a_stream_class = bt_ctf_stream_get_class(a_stream);
+ assert(a_stream_class);
+ trace = bt_ctf_stream_class_get_trace(a_stream_class);
+ assert(trace);
+
+ clock_class = bt_ctf_trace_get_clock_class(trace, 0);
+ a_clock_value = bt_ctf_event_get_clock_value(a_event, clock_class);
+ b_clock_value = bt_ctf_event_get_clock_value(b_event, clock_class);
+ assert(a_clock_value);
+ assert(b_clock_value);
+
+ ret = bt_ctf_clock_value_get_value_ns_from_epoch(a_clock_value, &a_ts);
+ assert(!ret);
+ ret = bt_ctf_clock_value_get_value_ns_from_epoch(b_clock_value, &b_ts);
+ assert(!ret);
+
+ bt_put(a_event);
+ bt_put(b_event);
+ bt_put(a_clock_value);
+ bt_put(b_clock_value);
+ bt_put(a_stream);
+ bt_put(a_stream_class);
+ bt_put(clock_class);
+ bt_put(trace);
+ return a_ts < b_ts;
+}
+
+static
+bool compare_notifications(struct bt_notification *a, struct bt_notification *b,
+ void *unused)
+{
+ static int notification_priorities[] = {
+ [BT_NOTIFICATION_TYPE_NEW_TRACE] = 0,
+ [BT_NOTIFICATION_TYPE_NEW_STREAM_CLASS] = 1,
+ [BT_NOTIFICATION_TYPE_NEW_EVENT_CLASS] = 2,
+ [BT_NOTIFICATION_TYPE_PACKET_BEGIN] = 3,
+ [BT_NOTIFICATION_TYPE_PACKET_END] = 4,
+ [BT_NOTIFICATION_TYPE_EVENT] = 5,
+ [BT_NOTIFICATION_TYPE_END_OF_TRACE] = 6,
+ };
+ int a_prio, b_prio;
+ enum bt_notification_type a_type, b_type;
+
+ assert(a && b);
+ a_type = bt_notification_get_type(a);
+ b_type = bt_notification_get_type(b);
+ assert(a_type > BT_NOTIFICATION_TYPE_ALL);
+ assert(a_type < BT_NOTIFICATION_TYPE_NR);
+ assert(b_type > BT_NOTIFICATION_TYPE_ALL);
+ assert(b_type < BT_NOTIFICATION_TYPE_NR);
+
+ a_prio = notification_priorities[a_type];
+ b_prio = notification_priorities[b_type];
+
+ if (likely((a_type == b_type) && a_type == BT_NOTIFICATION_TYPE_EVENT)) {
+ return compare_event_notifications(a, b);
+ }
+
+ if (unlikely(a_prio != b_prio)) {
+ return a_prio < b_prio;
+ }
+
+ /* Notification types are equal, but not of type "event". */
+ switch (a_type) {
+ case BT_NOTIFICATION_TYPE_PACKET_BEGIN:
+ case BT_NOTIFICATION_TYPE_PACKET_END:
+ case BT_NOTIFICATION_TYPE_STREAM_END:
+ {
+ int64_t a_sc_id, b_sc_id;
+ struct bt_ctf_stream *a_stream, *b_stream;
+ struct bt_ctf_stream_class *a_sc, *b_sc;
+
+ a_stream = internal_bt_notification_get_stream(a);
+ b_stream = internal_bt_notification_get_stream(b);
+ assert(a_stream && b_stream);
+
+ a_sc = bt_ctf_stream_get_class(a_stream);
+ b_sc = bt_ctf_stream_get_class(b_stream);
+ assert(a_sc && b_sc);
+
+ a_sc_id = bt_ctf_stream_class_get_id(a_sc);
+ b_sc_id = bt_ctf_stream_class_get_id(b_sc);
+ assert(a_sc_id >= 0 && b_sc_id >= 0);
+ bt_put(a_sc);
+ bt_put(a_stream);
+ bt_put(b_sc);
+ bt_put(b_stream);
+ return a_sc_id < b_sc_id;
+ }
+ case BT_NOTIFICATION_TYPE_NEW_TRACE:
+ case BT_NOTIFICATION_TYPE_END_OF_TRACE:
+ /* Impossible to have two separate traces. */
+ default:
+ assert(0);
+ }
+
+ assert(0);
+ return a < b;
+}
+
+static
+void stream_destroy(void *stream)
+{
+ ctf_fs_stream_destroy((struct ctf_fs_stream *) stream);
+}
+
+static
+int open_trace_streams(struct ctf_fs_component *ctf_fs,
+ struct ctf_fs_iterator *ctf_it)
+{
+ int ret = 0;
+ const char *name;
+ GError *error = NULL;
+ GDir *dir = g_dir_open(ctf_fs->trace_path->str, 0, &error);
+
+ if (!dir) {
+ PERR("Cannot open directory \"%s\": %s (code %d)\n",
+ ctf_fs->trace_path->str, error->message,
+ error->code);
+ goto error;
+ }
+
+ while ((name = g_dir_read_name(dir))) {
+ struct ctf_fs_file *file = NULL;
+ struct ctf_fs_stream *stream = NULL;
+
+ if (!strcmp(name, CTF_FS_METADATA_FILENAME)) {
+ /* Ignore the metadata stream. */
+ PDBG("Ignoring metadata file \"%s\"\n",
+ name);
+ continue;
+ }
+
+ if (name[0] == '.') {
+ PDBG("Ignoring hidden file \"%s\"\n",
+ name);
+ continue;
+ }
+
+ /* Create the file. */
+ file = ctf_fs_file_create(ctf_fs);
+ if (!file) {
+ PERR("Cannot create stream file object\n");
+ goto error;
+ }
+
+ /* Create full path string. */
+ g_string_append_printf(file->path, "%s/%s",
+ ctf_fs->trace_path->str, name);
+ if (!g_file_test(file->path->str, G_FILE_TEST_IS_REGULAR)) {
+ PDBG("Ignoring non-regular file \"%s\"\n", name);
+ ctf_fs_file_destroy(file);
+ continue;
+ }
+
+ /* Open the file. */
+ if (ctf_fs_file_open(ctf_fs, file, "rb")) {
+ ctf_fs_file_destroy(file);
+ goto error;
+ }
+
+ if (file->size == 0) {
+ /* Skip empty stream. */
+ ctf_fs_file_destroy(file);
+ continue;
+ }
+
+ /* Create a private stream; file ownership is passed to it. */
+ stream = ctf_fs_stream_create(ctf_fs, file);
+ if (!stream) {
+ ctf_fs_file_destroy(file);
+ goto error;
+ }
+
+ g_ptr_array_add(ctf_it->pending_streams, stream);
+ }
+
+ goto end;
+error:
+ ret = -1;
+end:
+ if (dir) {
+ g_dir_close(dir);
+ dir = NULL;
+ }
+ if (error) {
+ g_error_free(error);
+ }
+ return ret;
+}
+
+enum bt_notification_iterator_status ctf_fs_iterator_init(struct bt_component *source,
+ struct bt_notification_iterator *it)
+{
+ struct ctf_fs_iterator *ctf_it;
+ struct ctf_fs_component *ctf_fs;
+ enum bt_notification_iterator_status ret = BT_NOTIFICATION_ITERATOR_STATUS_OK;
+
+ assert(source && it);
+
+ ctf_fs = bt_component_get_private_data(source);
+ if (!ctf_fs) {
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
+ goto end;
+ }
+
+ ctf_it = g_new0(struct ctf_fs_iterator, 1);
+ if (!ctf_it) {
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM;
+ goto end;
+ }
+
+ ctf_it->stream_ht = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, bt_put, stream_destroy);
+ if (!ctf_it->stream_ht) {
+ goto error;
+ }
+ ctf_it->pending_streams = g_ptr_array_new_with_free_func(
+ stream_destroy);
+ if (!ctf_it->pending_streams) {
+ goto error;
+ }
+ ctf_it->pending_notifications = bt_notification_heap_create(
+ compare_notifications, NULL);
+ if (!ctf_it->pending_notifications) {
+ goto error;
+ }
+
+ ret = open_trace_streams(ctf_fs, ctf_it);
+ if (ret) {
+ goto error;
+ }
+
+ ret = bt_notification_iterator_set_private_data(it, ctf_it);
+ if (ret) {
+ goto error;
+ }
+
+end:
+ return ret;
+error:
+ (void) bt_notification_iterator_set_private_data(it, NULL);
+ ctf_fs_iterator_destroy_data(ctf_it);
+ goto end;
+}
+
+static
+void ctf_fs_destroy_data(struct ctf_fs_component *ctf_fs)
+{
+ if (ctf_fs->trace_path) {
+ g_string_free(ctf_fs->trace_path, TRUE);
+ }
+ if (ctf_fs->metadata) {
+ ctf_fs_metadata_fini(ctf_fs->metadata);
+ g_free(ctf_fs->metadata);
+ }
+ g_free(ctf_fs);
+}
+
+void ctf_fs_destroy(struct bt_component *component)
+{
+ void *data = bt_component_get_private_data(component);
+
+ ctf_fs_destroy_data(data);
+}
+
+static
+struct ctf_fs_component *ctf_fs_create(struct bt_value *params)
+{
+ struct ctf_fs_component *ctf_fs;
+ struct bt_value *value = NULL;
+ const char *path;
+ enum bt_value_status ret;
+
+ ctf_fs = g_new0(struct ctf_fs_component, 1);
+ if (!ctf_fs) {
+ goto end;
+ }
+
+ /* FIXME: should probably look for a source URI */
+ value = bt_value_map_get(params, "path");
+ if (!value || bt_value_is_null(value) || !bt_value_is_string(value)) {
+ goto error;
+ }
+
+ ret = bt_value_string_get(value, &path);
+ if (ret != BT_VALUE_STATUS_OK) {
+ goto error;
+ }
+
+ ctf_fs->trace_path = g_string_new(path);
+ if (!ctf_fs->trace_path) {
+ goto error;
+ }
+ ctf_fs->error_fp = stderr;
+ ctf_fs->page_size = (size_t) getpagesize();
+
+ // FIXME: check error.
+ ctf_fs->metadata = g_new0(struct ctf_fs_metadata, 1);
+ if (!ctf_fs->metadata) {
+ goto error;
+ }
+ ctf_fs_metadata_set_trace(ctf_fs);
+ goto end;
+
+error:
+ ctf_fs_destroy_data(ctf_fs);
+ ctf_fs = NULL;
+end:
+ BT_PUT(value);
+ return ctf_fs;
+}
+
+BT_HIDDEN
+enum bt_component_status ctf_fs_init(struct bt_component *source,
+ struct bt_value *params, UNUSED_VAR void *init_method_data)
+{
+ struct ctf_fs_component *ctf_fs;
+ enum bt_component_status ret = BT_COMPONENT_STATUS_OK;
+
+ assert(source);
+ ctf_fs_debug = g_strcmp0(getenv("CTF_FS_DEBUG"), "1") == 0;
+ ctf_fs = ctf_fs_create(params);
+ if (!ctf_fs) {
+ ret = BT_COMPONENT_STATUS_NOMEM;
+ goto end;
+ }
+
+ ret = bt_component_set_private_data(source, ctf_fs);
+ if (ret != BT_COMPONENT_STATUS_OK) {
+ goto error;
+ }
+end:
+ return ret;
+error:
+ (void) bt_component_set_private_data(source, NULL);
+ ctf_fs_destroy_data(ctf_fs);
+ return ret;
+}