00001 /******************************************************************************* 00002 00003 @file System.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, March 2004 00034 00035 @author Kris 00036 Regan Heath (Win32 error msgs) 00037 Anders F Bjorklund (Darwin patches) 00038 00039 00040 *******************************************************************************/ 00041 00042 module mango.sys.System; 00043 00044 private import std.thread; 00045 00046 private import mango.sys.OS, 00047 mango.sys.Epoch; 00048 00049 /******************************************************************************* 00050 00051 Stuff for sysError(), kindly provided by Regan Heath. 00052 00053 *******************************************************************************/ 00054 00055 version (Win32) 00056 { 00057 extern (Windows) VOID Sleep (DWORD millisecs); 00058 } 00059 version (Posix) 00060 { 00061 extern (C) void usleep(uint); 00062 } 00063 00064 /******************************************************************************* 00065 00066 Some system-specific functionality that doesn't belong anywhere 00067 else. This needs some further thought and refinement. 00068 00069 *******************************************************************************/ 00070 00071 struct System 00072 { 00073 /*********************************************************************** 00074 00075 Time interval multipliers. All Mango intervals are based 00076 upon microseconds. 00077 00078 ***********************************************************************/ 00079 00080 enum Interval { 00081 Microsec = 1, 00082 Millisec = 1000, 00083 Second = 1_000_000, 00084 Minute = 60_000_000 00085 }; 00086 00087 /*********************************************************************** 00088 00089 Return the number of milliseconds since January 1st 1970 00090 00091 ***********************************************************************/ 00092 00093 final static ulong getMillisecs () 00094 { 00095 return Epoch.utcMilli; 00096 } 00097 00098 /*********************************************************************** 00099 00100 Send this thread to sleep for a while. The time interval 00101 is measured in microseconds. Specifying a period value of 00102 uint.max will cause the calling thread to sleep forever. 00103 00104 ***********************************************************************/ 00105 00106 final static void sleep (uint interval = uint.max) 00107 { 00108 do { 00109 version (Posix) 00110 usleep (interval); 00111 00112 version (Win32) 00113 Sleep (interval / 1000); 00114 } while (interval == uint.max); 00115 } 00116 00117 /*********************************************************************** 00118 00119 Create a thread for the given delegate, and optionally start 00120 it up. 00121 00122 ***********************************************************************/ 00123 version (Ares) 00124 typedef void delegate() ThreadDelegate; 00125 else 00126 typedef int delegate() ThreadDelegate; 00127 00128 final static Thread createThread (ThreadDelegate dg, bool start = false) 00129 { 00130 Thread t = new Thread (dg); 00131 if (start) 00132 t.start (); 00133 return t; 00134 } 00135 }