CTF IR -> Trace IR

[babeltrace.git] / lib / trace-ir / packet-context-field.c

diff --git a/lib/trace-ir/packet-context-field.c b/lib/trace-ir/packet-context-field.c
new file mode 100644 (file)
index 0000000..b382743
--- /dev/null
+++ b/lib/trace-ir/packet-context-field.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2018 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 "PACKET-CONTEXT-FIELD"
+#include <babeltrace/lib-logging-internal.h>
+
+#include <babeltrace/assert-pre-internal.h>
+#include <babeltrace/trace-ir/stream-class-internal.h>
+#include <babeltrace/trace-ir/packet-context-field.h>
+#include <babeltrace/trace-ir/fields-internal.h>
+#include <babeltrace/trace-ir/field-wrapper-internal.h>
+#include <glib.h>
+
+struct bt_field *bt_packet_context_field_borrow_field(
+               struct bt_packet_context_field *context_field)
+{
+       struct bt_field_wrapper *field_wrapper = (void *) context_field;
+
+       BT_ASSERT_PRE_NON_NULL(field_wrapper, "Packet context field");
+       return field_wrapper->field;
+}
+
+void bt_packet_context_field_release(struct bt_packet_context_field *context_field)
+{
+       struct bt_field_wrapper *field_wrapper = (void *) context_field;
+
+       BT_ASSERT_PRE_NON_NULL(field_wrapper, "Packet context field");
+
+       /*
+        * Do not recycle because the pool could be destroyed at this
+        * point. This function is only called when there's an error
+        * anyway because the goal of a packet context field wrapper is
+        * to eventually move it to a packet with
+        * bt_packet_move_context() after creating it.
+        */
+       bt_field_wrapper_destroy(field_wrapper);
+}
+
+struct bt_packet_context_field *bt_packet_context_field_create(
+               struct bt_stream_class *stream_class)
+{
+       struct bt_field_wrapper *field_wrapper;
+
+       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE(stream_class->frozen,
+               "Stream class is not part of a trace: %!+S", stream_class);
+       BT_ASSERT_PRE(stream_class->packet_context_ft,
+               "Stream class has no packet context field type: %!+S",
+               stream_class);
+       field_wrapper = bt_field_wrapper_create(
+               &stream_class->packet_context_field_pool,
+               (void *) stream_class->packet_context_ft);
+       if (!field_wrapper) {
+               BT_LIB_LOGE("Cannot allocate one packet context field from stream class: "
+                       "%![sc-]+S", stream_class);
+               goto error;
+       }
+
+       BT_ASSERT(field_wrapper->field);
+       bt_stream_class_freeze(stream_class);
+       goto end;
+
+error:
+       if (field_wrapper) {
+               bt_field_wrapper_destroy(field_wrapper);
+               field_wrapper = NULL;
+       }
+
+end:
+       return (void *) field_wrapper;
+}