1 //===-- TimeValue.cpp - Implement OS TimeValue Concept ----------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements the operating system TimeValue concept. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/Support/TimeValue.h" 15 #include "llvm/Config/config.h" 16 17 namespace llvm { 18 using namespace sys; 19 20 const TimeValue::SecondsType 21 TimeValue::PosixZeroTimeSeconds = -946684800; 22 const TimeValue::SecondsType 23 TimeValue::Win32ZeroTimeSeconds = -12591158400ULL; 24 25 const TimeValue TimeValue::MinTime = TimeValue ( INT64_MIN,0 ); 26 const TimeValue TimeValue::MaxTime = TimeValue ( INT64_MAX,0 ); 27 const TimeValue TimeValue::ZeroTime = TimeValue ( 0,0 ); 28 const TimeValue TimeValue::PosixZeroTime = TimeValue ( PosixZeroTimeSeconds,0 ); 29 const TimeValue TimeValue::Win32ZeroTime = TimeValue ( Win32ZeroTimeSeconds,0 ); 30 31 void 32 TimeValue::normalize( void ) { 33 if ( nanos_ >= NANOSECONDS_PER_SECOND ) { 34 do { 35 seconds_++; 36 nanos_ -= NANOSECONDS_PER_SECOND; 37 } while ( nanos_ >= NANOSECONDS_PER_SECOND ); 38 } else if (nanos_ <= -NANOSECONDS_PER_SECOND ) { 39 do { 40 seconds_--; 41 nanos_ += NANOSECONDS_PER_SECOND; 42 } while (nanos_ <= -NANOSECONDS_PER_SECOND); 43 } 44 45 if (seconds_ >= 1 && nanos_ < 0) { 46 seconds_--; 47 nanos_ += NANOSECONDS_PER_SECOND; 48 } else if (seconds_ < 0 && nanos_ > 0) { 49 seconds_++; 50 nanos_ -= NANOSECONDS_PER_SECOND; 51 } 52 } 53 54 } 55 56 /// Include the platform-specific portion of TimeValue class 57 #ifdef LLVM_ON_UNIX 58 #include "Unix/TimeValue.inc" 59 #endif 60 #ifdef LLVM_ON_WIN32 61 #include "Windows/TimeValue.inc" 62 #endif 63
