ppapi/c/pp_time.h

/* Copyright (c) 2010 The Chromium Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#ifndef PPAPI_C_PP_TIME_H_
#define PPAPI_C_PP_TIME_H_

/**
 * @file
 * This file defines time and time ticks types.
 */

#include "ppapi/c/pp_macros.h"

/**
 * @addtogroup Typedefs
 * @{
 */
/**
 * The PP_Time type represents the "wall clock time" according to the browser
 * and is defined as the number of seconds since the Epoch (00:00:00 UTC,
 * January 1, 1970).
 */
typedef double PP_Time;
PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_Time, 8);
/**
 * @}
 */

/**
 * @addtogroup Typedefs
 * @{
 */
/**
 * A PP_TimeTicks value represents time ticks which are measured in seconds
 * and are used for indicating the time that certain messages were received.
 * In contrast to PP_Time, PP_TimeTicks does not correspond to any actual
 * wall clock time and will not change discontinuously if the user changes
 * their computer clock.
 *
 * The units are in seconds, but are not measured relative to any particular
 * epoch, so the most you can do is compare two values.
 */
typedef double PP_TimeTicks;
PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_TimeTicks, 8);
/**
 * @}
 */

#endif  /* PPAPI_C_PP_TIME_H_ */