TimeValue.cpp revision 37ed9c199ca639565f6ce88105f9e39e898d82d0
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::SecondsType 21 TimeValue::PosixZeroTimeSeconds = -946684800; 22const TimeValue::SecondsType 23 TimeValue::Win32ZeroTimeSeconds = -12591158400ULL; 24 25void 26TimeValue::normalize( void ) { 27 if ( nanos_ >= NANOSECONDS_PER_SECOND ) { 28 do { 29 seconds_++; 30 nanos_ -= NANOSECONDS_PER_SECOND; 31 } while ( nanos_ >= NANOSECONDS_PER_SECOND ); 32 } else if (nanos_ <= -NANOSECONDS_PER_SECOND ) { 33 do { 34 seconds_--; 35 nanos_ += NANOSECONDS_PER_SECOND; 36 } while (nanos_ <= -NANOSECONDS_PER_SECOND); 37 } 38 39 if (seconds_ >= 1 && nanos_ < 0) { 40 seconds_--; 41 nanos_ += NANOSECONDS_PER_SECOND; 42 } else if (seconds_ < 0 && nanos_ > 0) { 43 seconds_++; 44 nanos_ -= NANOSECONDS_PER_SECOND; 45 } 46} 47 48} 49 50/// Include the platform-specific portion of TimeValue class 51#ifdef LLVM_ON_UNIX 52#include "Unix/TimeValue.inc" 53#endif 54#ifdef LLVM_ON_WIN32 55#include "Windows/TimeValue.inc" 56#endif 57