LLVM API Documentation
00001 //===-- TimeValue.cpp - Implement OS TimeValue Concept ----------*- C++ -*-===// 00002 // 00003 // The LLVM Compiler Infrastructure 00004 // 00005 // This file was developed by Reid Spencer and is distributed under the 00006 // University of Illinois Open Source License. See LICENSE.TXT for details. 00007 // 00008 //===----------------------------------------------------------------------===// 00009 // 00010 // This file implements the operating system TimeValue concept. 00011 // 00012 //===----------------------------------------------------------------------===// 00013 00014 #include <llvm/System/TimeValue.h> 00015 00016 namespace llvm { 00017 using namespace sys; 00018 00019 const TimeValue TimeValue::MinTime = TimeValue ( INT64_MIN,0 ); 00020 const TimeValue TimeValue::MaxTime = TimeValue ( INT64_MAX,0 ); 00021 const TimeValue TimeValue::ZeroTime = TimeValue ( 0,0 ); 00022 const TimeValue TimeValue::PosixZeroTime = TimeValue ( -946684800,0 ); 00023 const TimeValue TimeValue::Win32ZeroTime = TimeValue ( -12591158400ULL,0 ); 00024 00025 void 00026 TimeValue::normalize( void ) { 00027 if ( nanos_ >= NANOSECONDS_PER_SECOND ) { 00028 do { 00029 seconds_++; 00030 nanos_ -= NANOSECONDS_PER_SECOND; 00031 } while ( nanos_ >= NANOSECONDS_PER_SECOND ); 00032 } else if (nanos_ <= -NANOSECONDS_PER_SECOND ) { 00033 do { 00034 seconds_--; 00035 nanos_ += NANOSECONDS_PER_SECOND; 00036 } while (nanos_ <= -NANOSECONDS_PER_SECOND); 00037 } 00038 00039 if (seconds_ >= 1 && nanos_ < 0) { 00040 seconds_--; 00041 nanos_ += NANOSECONDS_PER_SECOND; 00042 } else if (seconds_ < 0 && nanos_ > 0) { 00043 seconds_++; 00044 nanos_ -= NANOSECONDS_PER_SECOND; 00045 } 00046 } 00047 00048 } 00049 00050 /// Include the platform specific portion of TimeValue class 00051 #include "platform/TimeValue.cpp" 00052 00053 // vim: sw=2 smartindent smarttab tw=80 autoindent expandtab