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//$Id: BusyWait.nc,v 1.5 2010-06-29 22:07:50 scipio Exp $
/* Copyright (c) 2000-2003 The Regents of the University of California.
* 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.
* - Neither the name of the copyright holder nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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
* THE COPYRIGHT HOLDER OR CONTRIBUTORS 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.
*/
#include "Timer.h"
/**
* BusyWait is a low-level interface intended for busy waiting for short
* durations.
*
* <p>BusyWait is parameterised by its "precision" (milliseconds,
* microseconds, etc), identified by a type. This prevents, e.g.,
* unintentionally mixing components expecting milliseconds with those
* expecting microseconds as those interfaces have a different type.
*
* <p>BusyWait's second parameter is its "width", i.e., the number of bits
* used to represent time values. Width is indicated by including the
* appropriate size integer type as a BusyWait parameter.
*
* <p>See TEP102 for more details.
*
* @param precision_tag A type indicating the precision of this BusyWait
* interface.
* @param size_type An integer type representing time values for this
* BusyWait interface.
*
* @author Cory Sharp <cssharp@eecs.berkeley.edu>
*/
interface BusyWait<precision_tag, size_type>
{
/**
* Busy wait for (at least) dt time units. Use sparingly, when the
* cost of using an Alarm or Timer would be too high.
* @param dt Time to busy wait for.
*/
async command void wait(size_type dt);
}
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