TimeValue.cpp revision 218885
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 17namespace llvm { 18using namespace sys; 19 20const TimeValue TimeValue::MinTime = TimeValue ( INT64_MIN,0 ); 21const TimeValue TimeValue::MaxTime = TimeValue ( INT64_MAX,0 ); 22const TimeValue TimeValue::ZeroTime = TimeValue ( 0,0 ); 23const TimeValue TimeValue::PosixZeroTime = TimeValue ( -946684800,0 ); 24const TimeValue TimeValue::Win32ZeroTime = TimeValue ( -12591158400ULL,0 ); 25 26void 27TimeValue::normalize( void ) { 28 if ( nanos_ >= NANOSECONDS_PER_SECOND ) { 29 do { 30 seconds_++; 31 nanos_ -= NANOSECONDS_PER_SECOND; 32 } while ( nanos_ >= NANOSECONDS_PER_SECOND ); 33 } else if (nanos_ <= -NANOSECONDS_PER_SECOND ) { 34 do { 35 seconds_--; 36 nanos_ += NANOSECONDS_PER_SECOND; 37 } while (nanos_ <= -NANOSECONDS_PER_SECOND); 38 } 39 40 if (seconds_ >= 1 && nanos_ < 0) { 41 seconds_--; 42 nanos_ += NANOSECONDS_PER_SECOND; 43 } else if (seconds_ < 0 && nanos_ > 0) { 44 seconds_++; 45 nanos_ -= NANOSECONDS_PER_SECOND; 46 } 47} 48 49} 50 51/// Include the platform specific portion of TimeValue class 52#ifdef LLVM_ON_UNIX 53#include "Unix/TimeValue.inc" 54#endif 55#ifdef LLVM_ON_WIN32 56#include "Windows/TimeValue.inc" 57#endif 58