--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imsgev.h	Thu Mar 27 09:53:52 2014 +0500
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2009 Eric Faurot <eric@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef __IMSGEV_H__
+#define __IMSGEV_H__
+
+#include <event.h>
+#include <imsg.h>
+
+#define IMSG_LEN(m)	((m)->hdr.len - IMSG_HEADER_SIZE)
+
+struct imsgev {
+	struct imsgbuf	 ibuf;
+	void		(*handler)(int, short, void *);
+	struct event	 ev;
+	void		*data;
+	short		 events;
+	int		 terminate;
+	void		(*callback)(struct imsgev *, int, struct imsg *);
+	void		(*needfd)(struct imsgev *);
+};
+
+#define IMSGEV_IMSG	0
+#define IMSGEV_DONE	1
+#define IMSGEV_EREAD	2
+#define IMSGEV_EWRITE	3
+#define IMSGEV_EIMSG	4
+
+void imsgev_init(struct imsgev *, int, void *, void (*)(struct imsgev *,
+    int, struct imsg *), void (*)(struct imsgev *));
+int  imsgev_compose(struct imsgev *, u_int16_t, u_int32_t, u_int32_t, int,
+    void *, u_int16_t);
+void imsgev_close(struct imsgev *);
+void imsgev_clear(struct imsgev *);
+
+#endif /* __IMSGEV_H__ */