Add iterator and source implementations

[babeltrace.git] / plugins / source.c

diff --git a/plugins/source.c b/plugins/source.c
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..b722059bd0823273cbee62b6c86fc1ebde804dc6 100644 (file)
--- a/plugins/source.c
+++ b/plugins/source.c
@@ -0,0 +1,115 @@
+/*
+ * source.c
+ *
+ * Babeltrace Source Component
+ *
+ * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <babeltrace/compiler.h>
+#include <babeltrace/plugin/source-internal.h>
+#include <babeltrace/plugin/component-internal.h>
+#include <babeltrace/plugin/notification/iterator.h>
+#include <babeltrace/plugin/notification/iterator-internal.h>
+
+static
+void bt_component_source_destroy(struct bt_component *component)
+{
+       struct bt_component_source *source;
+
+       if (!component) {
+               return;
+       }
+
+       source = container_of(component, struct bt_component_source, parent);
+       g_free(source);
+}
+
+struct bt_component *bt_component_source_create(const char *name,
+               void *private_data, bt_component_destroy_cb destroy_func,
+               bt_component_source_iterator_init_cb iterator_init_cb)
+{
+       struct bt_component_source *source = NULL;
+       enum bt_component_status ret;
+
+       if (!iterator_init_cb) {
+               goto end;
+       }
+
+       source = g_new0(struct bt_component_source, 1);
+       if (!source) {
+               goto end;
+       }
+
+       ret = bt_component_init(&source->parent, name, private_data,
+               destroy_func, BT_COMPONENT_TYPE_SOURCE,
+               bt_component_source_destroy);
+       if (ret != BT_COMPONENT_STATUS_OK) {
+               g_free(source);
+               source = NULL;
+               goto end;
+       }
+
+       source->init_iterator = iterator_init_cb;
+end:
+       return source ? &source->parent : NULL;
+}
+
+struct bt_notification_iterator *bt_plugin_source_create_iterator(
+               struct bt_component *component)
+{
+       enum bt_component_status ret_component;
+       enum bt_notification_iterator_status ret_iterator;
+       struct bt_component_source *source;
+       struct bt_notification_iterator *iterator = NULL;
+
+       if (!component) {
+               goto end;
+       }
+
+       if (bt_component_get_type(component) != BT_COMPONENT_TYPE_SOURCE) {
+               goto end;
+       }
+
+       iterator = bt_notification_iterator_create(component);
+       if (!iterator) {
+               goto end;
+       }
+
+       source = container_of(component, struct bt_component_source, parent);
+       assert(source->init_iterator);
+       ret_component = source->init_iterator(component, iterator);
+       if (ret_component != BT_COMPONENT_STATUS_OK) {
+               goto error;
+       }
+
+       ret_iterator = bt_notification_iterator_validate(iterator);
+       if (ret_iterator != BT_NOTIFICATION_ITERATOR_STATUS_OK) {
+               goto error;
+       }
+end:
+       return iterator;
+error:
+       bt_notification_iterator_put(iterator);
+       return NULL;
+}