[Project] Add small helpers for migration simplifications

1 files changed, 78 insertions, 0 deletions

diff --git a/src/libutil/libev_helper.h b/src/libutil/libev_helper.h
new file mode 100644
index 000000000..cf52db557
--- /dev/null
+++ b/src/libutil/libev_helper.h
@@ -0,0 +1,78 @@
+/*-
+ * Copyright 2019 Vsevolod Stakhov
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef RSPAMD_LIBEV_HELPER_H
+#define RSPAMD_LIBEV_HELPER_H
+
+#include "config.h"
+#include "contrib/libev/ev.h"
+
+/*
+ * This module is a little helper to simplify libevent->libev transition
+ * It allows to create timed IO watchers utilising both
+ */
+
+typedef void (*rspamd_ev_cb)(int fd, short what, void *ud);
+
+struct rspamd_io_ev {
+	ev_io io;
+	ev_timer tm;
+	rspamd_ev_cb cb;
+	void *ud;
+	ev_tstamp last_activity;
+	ev_tstamp timeout;
+};
+
+/**
+ * Initialize watcher similar to event_init
+ * @param ev
+ * @param fd
+ * @param what
+ * @param cb
+ * @param ud
+ */
+void rspamd_ev_watcher_init (struct rspamd_io_ev *ev,
+		int fd, short what, rspamd_ev_cb cb, void *ud);
+
+/**
+ * Start watcher with the specific timeout
+ * @param loop
+ * @param ev
+ * @param timeout
+ */
+void rspamd_ev_watcher_start (struct ev_loop *loop,
+							  struct rspamd_io_ev *ev,
+							  ev_tstamp timeout);
+
+/**
+ * Stops watcher and clean it up
+ * @param loop
+ * @param ev
+ */
+void rspamd_ev_watcher_stop (struct ev_loop *loop,
+							 struct rspamd_io_ev *ev);
+
+/**
+ * Convenience function to reschedule watcher with different events
+ * @param loop
+ * @param ev
+ * @param what
+ */
+void rspamd_ev_watcher_reschedule (struct ev_loop *loop,
+								   struct rspamd_io_ev *ev,
+								   short what);
+
+#endif