SoW-2019-0002: Dynamic Snapshot

[lttng-tools.git] / include / lttng / action / group.h

diff --git a/include/lttng/action/group.h b/include/lttng/action/group.h
new file mode 100644 (file)
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+++ b/include/lttng/action/group.h
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+/*
+ * Copyright (C) 2019 EfficiOS, inc.
+ *
+ * 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_ACTION_GROUP_H
+#define LTTNG_ACTION_GROUP_H
+
+struct lttng_action;
+struct lttng_action_group;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Create a newly allocated action group object.
+ *
+ * Returns a new action group on success, NULL on failure. This action group
+ * must be destroyed using lttng_action_group_destroy().
+ */
+extern struct lttng_action *lttng_action_group_create(void);
+
+/*
+ * Add an action to an lttng_action object of type LTTNG_ACTION_GROUP.
+ *
+ * The group takes ownership of the action.
+ */
+extern enum lttng_action_status lttng_action_group_add_action(
+               struct lttng_action *group, struct lttng_action *action);
+
+extern enum lttng_action_status lttng_action_group_get_count(
+               const struct lttng_action *group, unsigned int *count);
+
+extern const struct lttng_action *lttng_action_group_get_at_index_const(
+               const struct lttng_action *group,
+               unsigned int index);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LTTNG_ACTION_GROUP_H */