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 4. Derivative works are permitted, but they must carry this notice 00027 in full and credit the original source. 00028 00029 00030 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 00031 00032 00033 @version Initial version, July 2004 00034 @author Kris 00035 00036 00037 *******************************************************************************/ 00038 00039 module mango.utils.Timer; 00040 00041 private import mango.base.System; 00042 00043 /******************************************************************************* 00044 00045 *******************************************************************************/ 00046 00047 class Timer 00048 { 00049 private ulong time; 00050 private uint pause, 00051 interval; 00052 00053 /*********************************************************************** 00054 00055 Construct a Timer for the specified interval (in microseconds) 00056 00057 ***********************************************************************/ 00058 00059 this (uint interval) 00060 { 00061 this.interval = interval; 00062 pause = interval / 2000; 00063 update (); 00064 00065 System.createThread (&run, true); 00066 } 00067 00068 /*********************************************************************** 00069 00070 Returns the current time in milliseconds 00071 00072 ***********************************************************************/ 00073 00074 ulong getTime () 00075 { 00076 volatile return time; 00077 } 00078 00079 /*********************************************************************** 00080 00081 ***********************************************************************/ 00082 00083 private final void update () 00084 { 00085 volatile time = (System.getMillisecs() / interval) * interval; 00086 } 00087 00088 /*********************************************************************** 00089 00090 ***********************************************************************/ 00091 00092 private int run() 00093 { 00094 while (true) 00095 { 00096 System.sleep (pause); 00097 update (); 00098 } 00099 return 0; 00100 } 00101 }