ppapi/c/pp_time.h

   1 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2  * Use of this source code is governed by a BSD-style license that can be
   3  * found in the LICENSE file.
   4  */
   5
   6 /* From pp_time.idl modified Fri May 10 15:48:42 2013. */
   7
   8 #ifndef PPAPI_C_PP_TIME_H_
   9 #define PPAPI_C_PP_TIME_H_
  10
  11 #include "ppapi/c/pp_macros.h"
  12 #include "ppapi/c/pp_stdint.h"
  13
  14 /**
  15  * @file
  16  * This file defines time, time ticks and time delta types.
  17  */
  18
  19
  20 /**
  21  * @addtogroup Typedefs
  22  * @{
  23  */
  24 /**
  25  * The <code>PP_Time</code> type represents the "wall clock time" according
  26  * to the browser and is defined as the number of seconds since the Epoch
  27  * (00:00:00 UTC, January 1, 1970).
  28  */
  29 typedef double PP_Time;
  30 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_Time, 8);
  31
  32 /**
  33  * A <code>PP_TimeTicks</code> value represents time ticks which are measured
  34  * in seconds and are used for indicating the time that certain messages were
  35  * received. In contrast to <code>PP_Time</code>, <code>PP_TimeTicks</code>
  36  * does not correspond to any actual wall clock time and will not change
  37  * discontinuously if the user changes their computer clock.
  38  *
  39  * The units are in seconds, but are not measured relative to any particular
  40  * epoch, so the most you can do is compare two values.
  41  */
  42 typedef double PP_TimeTicks;
  43 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_TimeTicks, 8);
  44
  45 /**
  46  * A <code>PP_TimeDelta</code> value represents a duration of time which is
  47  * measured in seconds.
  48  */
  49 typedef double PP_TimeDelta;
  50 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_TimeDelta, 8);
  51 /**
  52  * @}
  53  */
  54
  55 #endif  /* PPAPI_C_PP_TIME_H_ */
  56