00001 /******************************************************************************* 00002 00003 @file Timer.d 00004 00005 Copyright (C) 2004 Kris Bell 00006 00007 This software is provided 'as-is', without any express or implied 00008 warranty. In no event will the authors be held liable for damages 00009 of any kind arising from the use of this software. 00010 00011 Permission is hereby granted to anyone to use this software for any 00012 purpose, including commercial applications, and to alter it and/or 00013 redistribute it freely, subject to the following restrictions: 00014 00015 1. The origin of this software must not be misrepresented; you must 00016 not claim that you wrote the original software. If you use this 00017 software in a product, an acknowledgment within documentation of 00018 said product would be appreciated but is not required. 00019 00020 2. Altered source versions must be plainly marked as such, and must 00021 not be misrepresented as being the original software. 00022 00023 3. This notice may not be removed or altered from any distribution 00024 of the source. 00025 00026 00027 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 00028 00029 00030 @version Initial version, July 2004 00031 @author Kris 00032 00033 00034 *******************************************************************************/ 00035 00036 module mango.utils.Timer; 00037 00038 private import mango.base.System; 00039 00040 /******************************************************************************* 00041 00042 *******************************************************************************/ 00043 00044 class Timer 00045 { 00046 private ulong time; 00047 private uint pause, 00048 interval; 00049 00050 /*********************************************************************** 00051 00052 Construct a Timer for the specified interval (in microseconds) 00053 00054 ***********************************************************************/ 00055 00056 this (uint interval) 00057 { 00058 this.interval = interval; 00059 pause = interval / 2000; 00060 update (); 00061 00062 System.createThread (&run, true); 00063 } 00064 00065 /*********************************************************************** 00066 00067 Returns the current time in milliseconds 00068 00069 ***********************************************************************/ 00070 00071 ulong getTime () 00072 { 00073 volatile return time; 00074 } 00075 00076 /*********************************************************************** 00077 00078 ***********************************************************************/ 00079 00080 private final void update () 00081 { 00082 volatile time = (System.getMillisecs() / interval) * interval; 00083 } 00084 00085 /*********************************************************************** 00086 00087 ***********************************************************************/ 00088 00089 private int run() 00090 { 00091 while (true) 00092 { 00093 System.sleep (pause); 00094 update (); 00095 } 00096 return 0; 00097 } 00098 }