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diff --git a/src/libserver/worker_util.h b/src/libserver/worker_util.h
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+/* Copyright (c) 2014, Vsevolod Stakhov
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above copyright
+ *         notice, this list of conditions and the following disclaimer in the
+ *         documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef WORKER_UTIL_H_
+#define WORKER_UTIL_H_
+
+#include "config.h"
+#include "util.h"
+
+/**
+ * Return worker's control structure by its type
+ * @param type
+ * @return worker's control structure or NULL
+ */
+worker_t* get_worker_by_type (GQuark type);
+
+/**
+ * Set counter for a symbol
+ */
+double set_counter (const gchar *name, guint32 value);
+
+#ifndef HAVE_SA_SIGINFO
+typedef void (*rspamd_sig_handler_t) (gint);
+#else
+typedef void (*rspamd_sig_handler_t) (gint, siginfo_t *, void *);
+#endif
+
+struct rspamd_worker;
+
+/**
+ * Prepare worker's startup
+ * @param worker worker structure
+ * @param name name of the worker
+ * @param sig_handler handler of main signals
+ * @param accept_handler handler of accept event for listen sockets
+ * @return event base suitable for a worker
+ */
+struct event_base *
+prepare_worker (struct rspamd_worker *worker, const char *name,
+		void (*accept_handler)(int, short, void *));
+
+/**
+ * Stop accepting new connections for a worker
+ * @param worker
+ */
+void worker_stop_accept (struct rspamd_worker *worker);
+
+#endif /* WORKER_UTIL_H_ */