/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1997, 2012 Oracle and/or its affiliates.  All rights reserved.
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 * $Id$
 */

#include "db_config.h"

#include "db_int.h"

/*
 * __os_yield --
 *	Yield the processor, optionally pausing until running again.
 */
void
__os_yield(env, secs, usecs)
	ENV *env;
	u_long secs, usecs;		/* Seconds and microseconds. */
{
	COMPQUIET(env, NULL);

	/* Don't require the values be normalized. */
	for (; usecs >= US_PER_SEC; usecs -= US_PER_SEC)
		++secs;

	/*
	 * Yield the processor so other processes or threads can run.
	 *
	 * Sheer raving paranoia -- don't sleep for 0 time, in case some
	 * implementation doesn't yield the processor in that case.
	 */
	Sleep(secs * MS_PER_SEC + (usecs / US_PER_MS) + 1);
}