Introduce private worker header

server/core/maxscale/worker.h

@@ -0,0 +1,27 @@
+#pragma once
+/*
+ * Copyright (c) 2016 MariaDB Corporation Ab
+ *
+ * Use of this software is governed by the Business Source License included
+ * in the LICENSE.TXT file and at www.mariadb.com/bsl11.
+ *
+ * Change Date: 2019-07-01
+ *
+ * On the date above, in accordance with the Business Source License, use
+ * of this software will be governed by version 2 or later of the General
+ * Public License.
+ */
+
+#include <maxscale/worker.h>
+
+MXS_BEGIN_DECLS
+
+/**
+ * Initialize the worker mechanism.
+ *
+ * To be called once at process startup. This will cause as many workers
+ * to be created as the number of threads defined.
+ */
+void mxs_worker_init();
+
+MXS_END_DECLS