common: compile libcommon as C++

[lttng-tools.git] / src / common / event.cpp

diff --git a/src/common/event.cpp b/src/common/event.cpp
new file mode 100644 (file)
index 0000000..6b22fec
--- /dev/null
+++ b/src/common/event.cpp
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2018 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#include <lttng/event-internal.h>
+#include <common/error.h>
+
+struct lttng_event *lttng_event_copy(const struct lttng_event *event)
+{
+       struct lttng_event *new_event;
+       struct lttng_event_extended *new_event_extended;
+
+       new_event = (lttng_event *) zmalloc(sizeof(*event));
+       if (!new_event) {
+               PERROR("Error allocating event structure");
+               goto end;
+       }
+
+       /* Copy the content of the old event. */
+       memcpy(new_event, event, sizeof(*event));
+
+       /*
+        * We need to create a new extended since the previous pointer is now
+        * invalid.
+        */
+       new_event_extended = (lttng_event_extended *) zmalloc(sizeof(*new_event_extended));
+       if (!new_event_extended) {
+               PERROR("Error allocating event extended structure");
+               goto error;
+       }
+
+       new_event->extended.ptr = new_event_extended;
+end:
+       return new_event;
+error:
+       free(new_event);
+       new_event = NULL;
+       goto end;
+}