Add client notification API

[lttng-tools.git] / include / lttng / trigger / trigger.h

diff --git a/include/lttng/trigger/trigger.h b/include/lttng/trigger/trigger.h
new file mode 100644 (file)
index 0000000..b2eab0e
--- /dev/null
+++ b/include/lttng/trigger/trigger.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2017 - 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
+ */
+
+#ifndef LTTNG_TRIGGER_H
+#define LTTNG_TRIGGER_H
+
+struct lttng_action;
+struct lttng_condition;
+struct lttng_trigger;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum lttng_register_trigger_status {
+       LTTNG_REGISTER_TRIGGER_STATUS_OK = 0,
+       LTTNG_REGISTER_TRIGGER_STATUS_INVALID = -1,
+};
+
+/* The caller retains the ownership of both condition and action. */
+extern struct lttng_trigger *lttng_trigger_create(
+               struct lttng_condition *condition, struct lttng_action *action);
+
+extern struct lttng_condition *lttng_trigger_get_condition(
+               struct lttng_trigger *trigger);
+
+extern struct lttng_action *lttng_trigger_get_action(
+               struct lttng_trigger *trigger);
+
+extern void lttng_trigger_destroy(struct lttng_trigger *trigger);
+
+extern int lttng_register_trigger(struct lttng_trigger *trigger);
+
+extern int lttng_unregister_trigger(struct lttng_trigger *trigger);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LTTNG_TRIGGER_H */