--- /dev/null
+/*
+ * Copyright 2017-2019 Philippe Proulx <pproulx@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.
+ */
+
+#define BT_LOG_TAG "LIB/COMPONENT-CLASS-SINK-SIMPLE"
+#include "lib/logging.h"
+
+#include "common/assert.h"
+#include "common/common.h"
+#include "lib/assert-pre.h"
+#include "lib/object.h"
+#include <babeltrace2/graph/component-class-sink.h>
+#include <babeltrace2/graph/self-component-sink.h>
+#include <babeltrace2/graph/self-component-port.h>
+#include <babeltrace2/graph/self-component-port-input-message-iterator.h>
+#include <babeltrace2/graph/self-component.h>
+#include <glib.h>
+
+#include "component-class-sink-simple.h"
+#include "lib/func-status.h"
+
+/*
+ * We keep a single simple sink component class reference. It's created
+ * the first time bt_component_class_sink_simple_borrow() is called and
+ * put by the put_simple_sink_component_class() library destructor.
+ */
+static
+struct bt_component_class_sink *simple_comp_cls;
+
+struct simple_sink_data {
+ bt_self_component_port_input_message_iterator *msg_iter;
+ struct simple_sink_init_method_data init_method_data;
+};
+
+static
+enum bt_component_class_init_method_status simple_sink_init(
+ struct bt_self_component_sink *self_comp,
+ const struct bt_value *params, void *init_method_data)
+{
+ int status = BT_FUNC_STATUS_OK;
+ struct simple_sink_data *data = NULL;
+
+ data = g_new0(struct simple_sink_data, 1);
+ if (!data) {
+ BT_LIB_LOGE_APPEND_CAUSE(
+ "Failed to allocate simple sink component private data.");
+ status = BT_FUNC_STATUS_MEMORY_ERROR;
+ goto end;
+ }
+
+ BT_ASSERT(init_method_data);
+ data->init_method_data =
+ *((struct simple_sink_init_method_data *) init_method_data);
+
+ /* Add input port */
+ status = bt_self_component_sink_add_input_port(self_comp, "in",
+ NULL, NULL);
+ if (status != BT_FUNC_STATUS_OK) {
+ BT_LIB_LOGE_APPEND_CAUSE(
+ "Cannot add input port to simple sink component.");
+ goto end;
+ }
+
+ bt_self_component_set_data(
+ bt_self_component_sink_as_self_component(self_comp), data);
+
+end:
+ return status;
+}
+
+static
+void simple_sink_finalize(struct bt_self_component_sink *self_comp)
+{
+ struct simple_sink_data *data = bt_self_component_get_data(
+ bt_self_component_sink_as_self_component(self_comp));
+
+ if (data) {
+ if (data->init_method_data.finalize_func) {
+ /* Call user's finalization function */
+ data->init_method_data.finalize_func(
+ data->init_method_data.user_data);
+ }
+
+ BT_OBJECT_PUT_REF_AND_RESET(data->msg_iter);
+ g_free(data);
+ }
+}
+
+static
+enum bt_component_class_sink_graph_is_configured_method_status
+simple_sink_graph_is_configured(
+ bt_self_component_sink *self_comp)
+{
+ int status = BT_FUNC_STATUS_OK;
+ struct simple_sink_data *data = bt_self_component_get_data(
+ bt_self_component_sink_as_self_component(self_comp));
+
+ struct bt_self_component_port_input *self_port =
+ bt_self_component_sink_borrow_input_port_by_name(self_comp,
+ "in");
+
+ if (!bt_port_is_connected(bt_self_component_port_as_port(
+ bt_self_component_port_input_as_self_component_port(self_port)))) {
+ BT_LIB_LOGE_APPEND_CAUSE(
+ "Simple sink component's input port is not connected: "
+ "%![comp-]+c, %![port-]+p", self_comp, self_port);
+ status = BT_FUNC_STATUS_ERROR;
+ goto end;
+ }
+
+ BT_ASSERT(data);
+ data->msg_iter =
+ bt_self_component_port_input_message_iterator_create_from_sink_component(
+ self_comp, self_port);
+ if (!data->msg_iter) {
+ BT_LIB_LOGE_APPEND_CAUSE(
+ "Cannot create input port message iterator: "
+ "%![comp-]+c, %![port-]+p", self_comp, self_port);
+ status = BT_FUNC_STATUS_MEMORY_ERROR;
+ goto end;
+ }
+
+ if (data->init_method_data.init_func) {
+ /* Call user's initialization function */
+ status = data->init_method_data.init_func(data->msg_iter,
+ data->init_method_data.user_data);
+ if (status != BT_FUNC_STATUS_OK) {
+ BT_LIB_LOGW_APPEND_CAUSE(
+ "Simple sink component's user's initialization function failed: "
+ "status=%s, %![comp-]+c, %![port-]+p",
+ bt_common_func_status_string(status),
+ self_comp, self_port);
+ goto end;
+ }
+ }
+
+end:
+ return status;
+}
+
+static
+enum bt_component_class_sink_consume_method_status simple_sink_consume(
+ struct bt_self_component_sink *self_comp)
+{
+ int status;
+ struct simple_sink_data *data = bt_self_component_get_data(
+ bt_self_component_sink_as_self_component(self_comp));
+
+ BT_ASSERT(data);
+ BT_ASSERT(data->init_method_data.consume_func);
+ BT_ASSERT(data->msg_iter);
+
+ /* Call user's "consume" function */
+ status = data->init_method_data.consume_func(data->msg_iter,
+ data->init_method_data.user_data);
+ if (status != BT_FUNC_STATUS_OK) {
+ BT_LIB_LOGW_APPEND_CAUSE(
+ "Simple sink component's user's \"consume\" function failed: "
+ "status=%s, %![comp-]+c",
+ bt_common_func_status_string(status), self_comp);
+ }
+
+ return status;
+}
+
+struct bt_component_class_sink *bt_component_class_sink_simple_borrow(void)
+{
+ enum bt_component_class_set_method_status set_method_status;
+
+ if (simple_comp_cls) {
+ goto end;
+ }
+
+ simple_comp_cls = bt_component_class_sink_create("simple-sink",
+ simple_sink_consume);
+ if (!simple_comp_cls) {
+ BT_LIB_LOGE_APPEND_CAUSE(
+ "Cannot create simple sink component class.");
+ goto end;
+ }
+
+ set_method_status = bt_component_class_sink_set_init_method(
+ simple_comp_cls, simple_sink_init);
+ BT_ASSERT(set_method_status == BT_FUNC_STATUS_OK);
+ set_method_status = bt_component_class_sink_set_finalize_method(
+ simple_comp_cls, simple_sink_finalize);
+ BT_ASSERT(set_method_status == BT_FUNC_STATUS_OK);
+ set_method_status = bt_component_class_sink_set_graph_is_configured_method(
+ simple_comp_cls, simple_sink_graph_is_configured);
+ BT_ASSERT(set_method_status == BT_FUNC_STATUS_OK);
+
+end:
+ return simple_comp_cls;
+}
+
+__attribute__((destructor)) static
+void put_simple_sink_component_class(void) {
+ BT_OBJECT_PUT_REF_AND_RESET(simple_comp_cls);
+}
projects / babeltrace.git / blobdiff