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+/*
+    Copyright (c) 2007-2010 iMatix Corporation
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __HELPERS_H_INCLUDED__
+#define __HELPERS_H_INCLUDED__
+
+/******************************************************************************/
+/*  Helper functions.                                                         */
+/******************************************************************************/
+
+/*  Helper functions are used by perf tests so that they don't have to care   */
+/*  about minutiae of time-related functions on different OS platforms.       */
+
+/*  Starts the stopwatch. Returns the handle to the watch.                    */
+void *stopwatch_start ();
+
+/*  Stops the stopwatch. Returns the number of microseconds elapsed since     */
+/*  the stopwatch was started.                                                */
+unsigned long stopwatch_stop (void *watch_);
+
+/*  Sleeps for specified number of seconds.                                   */
+void perf_sleep (int seconds_);
+
+#endif