*/
#include <babeltrace/plugin/plugin-system.h>
+#include <babeltrace/ctf-ir/packet.h>
#include <babeltrace/plugin/notification/iterator.h>
+#include <babeltrace/plugin/notification/stream.h>
+#include <babeltrace/plugin/notification/event.h>
+#include <babeltrace/plugin/notification/packet.h>
+#include <babeltrace/plugin/notification/heap.h>
#include <glib.h>
#include <assert.h>
#include <unistd.h>
struct bt_notification *ctf_fs_iterator_get(
struct bt_notification_iterator *iterator)
{
- struct bt_notification *notification = NULL;
- struct ctf_fs_component *ctf_fs;
- struct bt_component *component = bt_notification_iterator_get_component(
- iterator);
-
- if (!component) {
- goto end;
- }
+ struct ctf_fs_iterator *ctf_it =
+ bt_notification_iterator_get_private_data(iterator);
- ctf_fs = bt_component_get_private_data(component);
- if (!ctf_fs) {
- goto end;
- }
-
- notification = bt_get(ctf_fs->current_notification);
-end:
- BT_PUT(component);
- return notification;
+ return bt_get(ctf_it->current_notification);
}
static
-enum bt_notification_iterator_status ctf_fs_iterator_next(
- struct bt_notification_iterator *iterator)
+enum bt_notification_iterator_status ctf_fs_iterator_get_next_notification(
+ struct ctf_fs_iterator *it,
+ struct ctf_fs_stream *stream,
+ struct bt_notification **notification)
{
+ enum bt_ctf_notif_iter_status status;
enum bt_notification_iterator_status ret;
- struct bt_notification *notification = NULL;
- struct ctf_fs_component *ctf_fs;
- struct bt_component *component = bt_notification_iterator_get_component(
- iterator);
- if (!component) {
- ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
+ if (stream->end_reached) {
+ status = BT_CTF_NOTIF_ITER_STATUS_EOF;
goto end;
}
- ctf_fs = bt_component_get_private_data(component);
- assert(ctf_fs);
-
- ret = ctf_fs_data_stream_get_next_notification(ctf_fs, ¬ification, 0);
- if (ret || !notification) {
+ status = bt_ctf_notif_iter_get_next_notification(stream->notif_iter,
+ notification);
+ if (status != BT_CTF_NOTIF_ITER_STATUS_OK &&
+ status != BT_CTF_NOTIF_ITER_STATUS_EOF) {
goto end;
}
- bt_put(ctf_fs->current_notification);
- ctf_fs->current_notification = notification;
+ /* Should be handled in bt_ctf_notif_iter_get_next_notification. */
+ if (status == BT_CTF_NOTIF_ITER_STATUS_EOF) {
+ *notification = bt_notification_stream_end_create(
+ stream->stream);
+ if (!*notification) {
+ status = BT_CTF_NOTIF_ITER_STATUS_ERROR;
+ }
+ status = BT_CTF_NOTIF_ITER_STATUS_OK;
+ stream->end_reached = true;
+ }
end:
- BT_PUT(component);
+ switch (status) {
+ case BT_CTF_NOTIF_ITER_STATUS_EOF:
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_END;
+ break;
+ case BT_CTF_NOTIF_ITER_STATUS_OK:
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_OK;
+ break;
+ case BT_CTF_NOTIF_ITER_STATUS_AGAIN:
+ /*
+ * Should not make it this far as this is medium-specific;
+ * there is nothing for the user to do and it should have been
+ * handled upstream.
+ */
+ assert(0);
+ case BT_CTF_NOTIF_ITER_STATUS_INVAL:
+ /* No argument provided by the user, so don't return INVAL. */
+ case BT_CTF_NOTIF_ITER_STATUS_ERROR:
+ default:
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
+ break;
+ }
return ret;
}
+/*
+ * Remove me. This is a temporary work-around due to our inhability to use
+ * libbabeltrace-ctf from libbabeltrace-plugin.
+ */
static
-void ctf_fs_iterator_destroy_data(struct ctf_fs_iterator *ctf_it)
+struct bt_ctf_stream *internal_bt_notification_get_stream(
+ struct bt_notification *notification)
{
- g_free(ctf_it);
+ struct bt_ctf_stream *stream = NULL;
+
+ assert(notification);
+ switch (bt_notification_get_type(notification)) {
+ case BT_NOTIFICATION_TYPE_EVENT:
+ {
+ struct bt_ctf_event *event;
+
+ event = bt_notification_event_get_event(notification);
+ stream = bt_ctf_event_get_stream(event);
+ bt_put(event);
+ break;
+ }
+ case BT_NOTIFICATION_TYPE_PACKET_START:
+ {
+ struct bt_ctf_packet *packet;
+
+ packet = bt_notification_packet_start_get_packet(notification);
+ stream = bt_ctf_packet_get_stream(packet);
+ bt_put(packet);
+ break;
+ }
+ case BT_NOTIFICATION_TYPE_PACKET_END:
+ {
+ struct bt_ctf_packet *packet;
+
+ packet = bt_notification_packet_end_get_packet(notification);
+ stream = bt_ctf_packet_get_stream(packet);
+ bt_put(packet);
+ break;
+ }
+ case BT_NOTIFICATION_TYPE_STREAM_END:
+ stream = bt_notification_stream_end_get_stream(notification);
+ break;
+ default:
+ goto end;
+ }
+end:
+ return stream;
}
static
-void ctf_fs_iterator_destroy(struct bt_notification_iterator *it)
+enum bt_notification_iterator_status populate_heap(struct ctf_fs_iterator *it)
{
- void *data = bt_notification_iterator_get_private_data(it);
+ size_t i, pending_streams_count = it->pending_streams->len;
+ enum bt_notification_iterator_status ret =
+ BT_NOTIFICATION_ITERATOR_STATUS_OK;
+
+ /* Insert one stream-associated notification for each stream. */
+ for (i = 0; i < pending_streams_count; i++) {
+ struct bt_notification *notification;
+ struct ctf_fs_stream *fs_stream;
+ struct bt_ctf_stream *stream;
+ size_t pending_stream_index = pending_streams_count - 1 - i;
+
+ fs_stream = g_ptr_array_index(it->pending_streams,
+ pending_stream_index);
+
+ do {
+ int heap_ret;
+
+ ret = ctf_fs_iterator_get_next_notification(
+ it, fs_stream, ¬ification);
+ if (ret && ret != BT_NOTIFICATION_ITERATOR_STATUS_END) {
+ printf_debug("Failed to populate heap at stream %zu\n",
+ pending_stream_index);
+ goto end;
+ }
+
+ stream = internal_bt_notification_get_stream(
+ notification);
+ if (stream) {
+ gboolean inserted;
+
+ /*
+ * Associate pending ctf_fs_stream to
+ * bt_ctf_stream. Ownership of stream
+ * is passed to the stream ht.
+ */
+ inserted = g_hash_table_insert(it->stream_ht,
+ stream, fs_stream);
+ if (!inserted) {
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM;
+ printf_debug("Failed to associate fs stream to ctf stream\n");
+ goto end;
+ }
+ }
+
+ heap_ret = bt_notification_heap_insert(
+ it->pending_notifications,
+ notification);
+ bt_put(notification);
+ if (heap_ret) {
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM;
+ printf_debug("Failed to insert notification in heap\n");
+ goto end;
+ }
+ } while (!stream && ret != BT_NOTIFICATION_ITERATOR_STATUS_END);
+ /*
+ * Set NULL so the destruction callback registered with the
+ * array is not invoked on the stream (its ownership was
+ * transferred to the streams hashtable).
+ */
+ g_ptr_array_index(it->pending_streams,
+ pending_stream_index) = NULL;
+ g_ptr_array_remove_index(it->pending_streams,
+ pending_stream_index);
+ }
- ctf_fs_iterator_destroy_data(data);
+ g_ptr_array_free(it->pending_streams, TRUE);
+ it->pending_streams = NULL;
+end:
+ return ret;
}
static
-enum bt_component_status ctf_fs_iterator_init(struct bt_component *source,
- struct bt_notification_iterator *it)
+enum bt_notification_iterator_status ctf_fs_iterator_next(
+ struct bt_notification_iterator *iterator)
{
- struct ctf_fs_iterator *ctf_it;
- enum bt_component_status ret = BT_COMPONENT_STATUS_OK;
-
- assert(source && it);
- ctf_it = g_new0(struct ctf_fs_iterator, 1);
- if (!ctf_it) {
- ret = BT_COMPONENT_STATUS_NOMEM;
+ int heap_ret;
+ struct bt_ctf_stream *stream;
+ struct ctf_fs_stream *fs_stream;
+ struct bt_notification *notification;
+ struct bt_notification *next_stream_notification;
+ enum bt_notification_iterator_status ret =
+ BT_NOTIFICATION_ITERATOR_STATUS_OK;
+ struct ctf_fs_iterator *ctf_it =
+ bt_notification_iterator_get_private_data(iterator);
+
+ notification = bt_notification_heap_pop(ctf_it->pending_notifications);
+ if (!notification && !ctf_it->pending_streams) {
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_END;
goto end;
}
- ret = bt_notification_iterator_set_get_cb(it, ctf_fs_iterator_get);
- if (ret) {
- goto error;
+ if (!notification && ctf_it->pending_streams) {
+ /*
+ * Insert at one notification per stream in the heap and pop
+ * one.
+ */
+ ret = populate_heap(ctf_it);
+ if (ret) {
+ goto end;
+ }
+
+ notification = bt_notification_heap_pop(
+ ctf_it->pending_notifications);
+ if (!notification) {
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_END;
+ goto end;
+ }
}
- ret = bt_notification_iterator_set_next_cb(it, ctf_fs_iterator_next);
- if (ret) {
- goto error;
+ /* notification is set from here. */
+
+ stream = internal_bt_notification_get_stream(notification);
+ if (!stream) {
+ /*
+ * The current notification is not associated to a particular
+ * stream, there is no need to insert a new notification from
+ * a stream in the heap.
+ */
+ goto end;
}
- ret = bt_notification_iterator_set_destroy_cb(it,
- ctf_fs_iterator_destroy);
- if (ret) {
- goto error;
+ fs_stream = g_hash_table_lookup(ctf_it->stream_ht, stream);
+ if (!fs_stream) {
+ /* We have reached this stream's end. */
+ goto end;
}
- ret = bt_notification_iterator_set_private_data(it, ctf_it);
- if (ret) {
- goto error;
+ ret = ctf_fs_iterator_get_next_notification(ctf_it, fs_stream,
+ &next_stream_notification);
+ if ((ret && ret != BT_NOTIFICATION_ITERATOR_STATUS_END)) {
+ heap_ret = bt_notification_heap_insert(
+ ctf_it->pending_notifications, notification);
+
+ assert(!next_stream_notification);
+ if (heap_ret) {
+ /*
+ * We're dropping the most recent notification, but at
+ * this point, something is seriously wrong...
+ */
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM;
+ }
+ BT_PUT(notification);
+ goto end;
+ }
+
+ if (ret == BT_NOTIFICATION_ITERATOR_STATUS_END) {
+ gboolean success;
+
+ /* Remove stream. */
+ success = g_hash_table_remove(ctf_it->stream_ht, stream);
+ assert(success);
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_OK;
+ } else {
+ heap_ret = bt_notification_heap_insert(ctf_it->pending_notifications,
+ next_stream_notification);
+ BT_PUT(next_stream_notification);
+ if (heap_ret) {
+ /*
+ * We're dropping the most recent notification...
+ */
+ ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM;
+ }
}
+
+ /*
+ * Ensure that the stream is removed from both pending_streams and
+ * the streams hashtable on reception of the "end of stream"
+ * notification.
+ */
end:
- return ret;
-error:
- (void) bt_notification_iterator_set_private_data(it, NULL);
- ctf_fs_iterator_destroy_data(ctf_it);
+ BT_MOVE(ctf_it->current_notification, notification);
return ret;
}
static
-void ctf_fs_destroy_data(struct ctf_fs_component *component)
+void ctf_fs_iterator_destroy_data(struct ctf_fs_iterator *ctf_it)
{
- if (component->trace_path) {
- g_string_free(component->trace_path, TRUE);
+ bt_put(ctf_it->current_notification);
+ bt_put(ctf_it->pending_notifications);
+ if (ctf_it->pending_streams) {
+ g_ptr_array_free(ctf_it->pending_streams, TRUE);
}
-
- ctf_fs_metadata_fini(&component->metadata);
- BT_PUT(component->current_notification);
- if (component->streams) {
- g_ptr_array_free(component->streams, TRUE);
+ if (ctf_it->stream_ht) {
+ g_hash_table_destroy(ctf_it->stream_ht);
}
- g_free(component);
+ g_free(ctf_it);
}
static
-void ctf_fs_destroy(struct bt_component *component)
+void ctf_fs_iterator_destroy(struct bt_notification_iterator *it)
{
- void *data = bt_component_get_private_data(component);
+ void *data = bt_notification_iterator_get_private_data(it);
- ctf_fs_destroy_data(data);
+ ctf_fs_iterator_destroy_data(data);
}
static
-int open_trace_streams(struct ctf_fs_component *ctf_fs)
+bool compare_notifications(struct bt_notification *a, struct bt_notification *b,
+ void *unused)
+{
+ 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;
goto error;
}
- g_ptr_array_add(ctf_fs->streams, stream);
+ g_ptr_array_add(ctf_it->pending_streams, stream);
}
goto end;
}
static
-void stream_destroy(void *stream)
+enum bt_component_status ctf_fs_iterator_init(struct bt_component *source,
+ struct bt_notification_iterator *it)
{
- ctf_fs_stream_destroy((struct ctf_fs_stream *) stream);
+ struct ctf_fs_iterator *ctf_it;
+ struct ctf_fs_component *ctf_fs;
+ enum bt_component_status ret = BT_COMPONENT_STATUS_OK;
+
+ assert(source && it);
+
+ ctf_fs = bt_component_get_private_data(source);
+ if (!ctf_fs) {
+ ret = BT_COMPONENT_STATUS_INVALID;
+ goto end;
+ }
+
+ ctf_it = g_new0(struct ctf_fs_iterator, 1);
+ if (!ctf_it) {
+ ret = BT_COMPONENT_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_get_cb(it, ctf_fs_iterator_get);
+ if (ret) {
+ goto error;
+ }
+
+ ret = bt_notification_iterator_set_next_cb(it, ctf_fs_iterator_next);
+ if (ret) {
+ goto error;
+ }
+
+ ret = bt_notification_iterator_set_destroy_cb(it,
+ ctf_fs_iterator_destroy);
+ 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);
+}
+
+static
+void ctf_fs_destroy(struct bt_component *component)
+{
+ void *data = bt_component_get_private_data(component);
+
+ ctf_fs_destroy_data(data);
}
static
if (!ctf_fs->trace_path) {
goto error;
}
-
- ctf_fs->streams = g_ptr_array_new_with_free_func(stream_destroy);
ctf_fs->error_fp = stderr;
ctf_fs->page_size = (size_t) getpagesize();
// FIXME: check error.
- ctf_fs_metadata_set_trace(ctf_fs);
-
- ret = open_trace_streams(ctf_fs);
- if (ret) {
+ 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:
projects / babeltrace.git / blobdiff