Hide lttng_event_copy symbol

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

diff --git a/src/common/event.c b/src/common/event.c
new file mode 100644 (file)
index 0000000..329a868
--- /dev/null
+++ b/src/common/event.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2018 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License, version 2.1 only,
+ * as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <lttng/event-internal.h>
+#include <common/error.h>
+
+LTTNG_HIDDEN
+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 = 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 = 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);
+       goto end;
+}