- introduce the scheduler_backend API

- introduce the scheduler_ramqueue backend
- remove all occurences of ramqueue outside of the ramqueue backend
- teach runner how to use the new API

it is now possible to write custom schedulers !

ok eric@, ok chl@

1 files changed, 50 insertions, 0 deletions

diff --git a/usr.sbin/smtpd/scheduler.c b/usr.sbin/smtpd/scheduler.c
new file mode 100644
index 00000000000..ff843fa8019
--- /dev/null
+++ b/usr.sbin/smtpd/scheduler.c
@@ -0,0 +1,50 @@
+/*	$OpenBSD: scheduler.c,v 1.1 2012/01/28 11:33:07 gilles Exp $	*/
+
+/*
+ * Copyright (c) 2012 Gilles Chehade <gilles@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.
+ */
+
+#include <sys/types.h>
+#include <sys/queue.h>
+#include <sys/tree.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <event.h>
+#include <fcntl.h>
+#include <imsg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "smtpd.h"
+#include "log.h"
+
+extern struct scheduler_backend scheduler_backend_ramqueue;
+
+struct scheduler_backend *
+scheduler_backend_lookup(enum scheduler_type type)
+{
+	switch (type) {
+	case SCHED_RAMQUEUE:
+		return &scheduler_backend_ramqueue;
+	default:
+		fatal("unsupported scheduler_backend type");
+	}
+
+	return NULL;
+}