src.text.dmesg: make clock class non-absolute
[babeltrace.git] / plugins / ctf / fs-src / fs.c
index daaae12e5a3a4ce1de501db31c5ce78362f15855..29c22eb55b5f15444a40c7b200ac7390be9dbae0 100644 (file)
@@ -87,105 +87,68 @@ void ctf_fs_msg_iter_data_destroy(
        g_free(msg_iter_data);
 }
 
+static
+void set_msg_iter_emits_stream_beginning_end_messages(
+               struct ctf_fs_msg_iter_data *msg_iter_data)
+{
+       bt_msg_iter_set_emit_stream_beginning_message(
+               msg_iter_data->ds_file->msg_iter,
+               msg_iter_data->ds_file_info_index == 0);
+       bt_msg_iter_set_emit_stream_end_message(
+               msg_iter_data->ds_file->msg_iter,
+               msg_iter_data->ds_file_info_index ==
+                       msg_iter_data->ds_file_group->ds_file_infos->len - 1);
+}
+
 static
 bt_self_message_iterator_status ctf_fs_iterator_next_one(
                struct ctf_fs_msg_iter_data *msg_iter_data,
-               const bt_message **msg)
+               const bt_message **out_msg)
 {
        bt_self_message_iterator_status status;
-       bt_message *priv_msg;
-       int ret;
 
        BT_ASSERT(msg_iter_data->ds_file);
-       status = ctf_fs_ds_file_next(msg_iter_data->ds_file, &priv_msg);
-       *msg = priv_msg;
 
-       if (status == BT_SELF_MESSAGE_ITERATOR_STATUS_OK &&
-                       bt_message_get_type(*msg) ==
-                       BT_MESSAGE_TYPE_STREAM_BEGINNING) {
-               if (msg_iter_data->skip_stream_begin_msgs) {
-                       /*
-                        * We already emitted a
-                        * BT_MESSAGE_TYPE_STREAM_BEGINNING
-                        * message: skip this one, get a new one.
-                        */
-                       BT_MESSAGE_PUT_REF_AND_RESET(*msg);
-                       status = ctf_fs_ds_file_next(msg_iter_data->ds_file,
-                               &priv_msg);
-                       *msg = priv_msg;
-                       BT_ASSERT(status != BT_SELF_MESSAGE_ITERATOR_STATUS_END);
-                       goto end;
-               } else {
-                       /*
-                        * First BT_MESSAGE_TYPE_STREAM_BEGINNING
-                        * message: skip all following.
-                        */
-                       msg_iter_data->skip_stream_begin_msgs = true;
-                       goto end;
-               }
-       }
+       while (true) {
+               bt_message *msg;
 
-       if (status == BT_SELF_MESSAGE_ITERATOR_STATUS_OK &&
-                       bt_message_get_type(*msg) ==
-                       BT_MESSAGE_TYPE_STREAM_END) {
-               msg_iter_data->ds_file_info_index++;
+               status = ctf_fs_ds_file_next(msg_iter_data->ds_file, &msg);
+               switch (status) {
+               case BT_SELF_MESSAGE_ITERATOR_STATUS_OK:
+                       *out_msg = msg;
+                       msg = NULL;
+                       goto end;
+               case BT_SELF_MESSAGE_ITERATOR_STATUS_END:
+               {
+                       int ret;
+
+                       if (msg_iter_data->ds_file_info_index ==
+                                       msg_iter_data->ds_file_group->ds_file_infos->len - 1) {
+                               /* End of all group's stream files */
+                               goto end;
+                       }
+
+                       msg_iter_data->ds_file_info_index++;
+                       bt_msg_iter_reset_for_next_stream_file(
+                               msg_iter_data->msg_iter);
+                       set_msg_iter_emits_stream_beginning_end_messages(
+                               msg_iter_data);
 
-               if (msg_iter_data->ds_file_info_index ==
-                               msg_iter_data->ds_file_group->ds_file_infos->len) {
                        /*
-                        * No more stream files to read: we reached the
-                        * real end. Emit this
-                        * BT_MESSAGE_TYPE_STREAM_END message.
-                        * The next time ctf_fs_iterator_next() is
-                        * called for this message iterator,
-                        * ctf_fs_ds_file_next() will return
-                        * BT_SELF_MESSAGE_ITERATOR_STATUS_END().
+                        * Open and start reading the next stream file
+                        * within our stream file group.
                         */
-                       goto end;
-               }
+                       ret = msg_iter_data_set_current_ds_file(msg_iter_data);
+                       if (ret) {
+                               status = BT_SELF_MESSAGE_ITERATOR_STATUS_ERROR;
+                               goto end;
+                       }
 
-               BT_MESSAGE_PUT_REF_AND_RESET(*msg);
-               bt_msg_iter_reset(msg_iter_data->msg_iter);
-
-               /*
-                * Open and start reading the next stream file within
-                * our stream file group.
-                */
-               ret = msg_iter_data_set_current_ds_file(msg_iter_data);
-               if (ret) {
-                       status = BT_SELF_MESSAGE_ITERATOR_STATUS_ERROR;
-                       goto end;
+                       /* Continue the loop to get the next message */
+                       break;
                }
-
-               status = ctf_fs_ds_file_next(msg_iter_data->ds_file, &priv_msg);
-               *msg = priv_msg;
-
-               /*
-                * If we get a message, we expect to get a
-                * BT_MESSAGE_TYPE_STREAM_BEGINNING message
-                * because the iterator's state machine emits one before
-                * even requesting the first block of data from the
-                * medium. Skip this message because we're not
-                * really starting a new stream here, and try getting a
-                * new message (which, if it works, is a
-                * BT_MESSAGE_TYPE_PACKET_BEGINNING one). We're sure to
-                * get at least one pair of
-                * BT_MESSAGE_TYPE_PACKET_BEGINNING and
-                * BT_MESSAGE_TYPE_PACKET_END messages in the
-                * case of a single, empty packet. We know there's at
-                * least one packet because the stream file group does
-                * not contain empty stream files.
-                */
-               BT_ASSERT(msg_iter_data->skip_stream_begin_msgs);
-
-               if (status == BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
-                       BT_ASSERT(bt_message_get_type(*msg) ==
-                               BT_MESSAGE_TYPE_STREAM_BEGINNING);
-                       BT_MESSAGE_PUT_REF_AND_RESET(*msg);
-                       status = ctf_fs_ds_file_next(msg_iter_data->ds_file,
-                               &priv_msg);
-                       *msg = priv_msg;
-                       BT_ASSERT(status != BT_SELF_MESSAGE_ITERATOR_STATUS_END);
+               default:
+                       goto end;
                }
        }
 
@@ -276,6 +239,7 @@ bt_self_message_iterator_status ctf_fs_iterator_init(
                goto error;
        }
 
+       set_msg_iter_emits_stream_beginning_end_messages(msg_iter_data);
        bt_self_message_iterator_set_data(self_msg_iter,
                msg_iter_data);
        if (ret != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
@@ -341,7 +305,7 @@ void ctf_fs_trace_destroy(struct ctf_fs_trace *ctf_fs_trace)
 }
 
 static
-void ctf_fs_trace_destroy_msgier(void *data)
+void ctf_fs_trace_destroy_notifier(void *data)
 {
        struct ctf_fs_trace *trace = data;
        ctf_fs_trace_destroy(trace);
@@ -656,9 +620,11 @@ int add_ds_file_to_ds_file_group(struct ctf_fs_trace *ctf_fs_trace,
 
        if (props.snapshots.beginning_clock != UINT64_C(-1)) {
                BT_ASSERT(sc->default_clock_class);
-               ret = bt_clock_class_cycles_to_ns_from_origin(
-                       sc->default_clock_class,
-                       props.snapshots.beginning_clock, &begin_ns);
+               ret = bt_util_clock_cycles_to_ns_from_origin(
+                       props.snapshots.beginning_clock,
+                       sc->default_clock_class->frequency,
+                       sc->default_clock_class->offset_seconds,
+                       sc->default_clock_class->offset_cycles, &begin_ns);
                if (ret) {
                        BT_LOGE("Cannot convert clock cycles to nanoseconds from origin (`%s`).",
                                path);
@@ -1372,7 +1338,7 @@ struct ctf_fs_component *ctf_fs_create(
        }
 
        ctf_fs->traces = g_ptr_array_new_with_free_func(
-                       ctf_fs_trace_destroy_msgier);
+                       ctf_fs_trace_destroy_notifier);
        if (!ctf_fs->traces) {
                goto error;
        }
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