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Initial implementation of the TimeValue abstraction.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16511 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2004-09-24 23:25:19 +00:00
parent 4046846d2c
commit 9926c31351
3 changed files with 481 additions and 0 deletions
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53
lib/System/TimeValue.cpp Normal file
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//===-- TimeValue.cpp - Implement OS TimeValue Concept ----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the operating system TimeValue concept.
//
//===----------------------------------------------------------------------===//
#include <llvm/System/TimeValue.h>
namespace llvm {
using namespace sys;
const TimeValue TimeValue::MinTime = TimeValue ( INT64_MIN,0 );
const TimeValue TimeValue::MaxTime = TimeValue ( INT64_MAX,0 );
const TimeValue TimeValue::ZeroTime = TimeValue ( 0,0 );
const TimeValue TimeValue::PosixZeroTime = TimeValue ( -946684800,0 );
const TimeValue TimeValue::Win32ZeroTime = TimeValue ( -12591158400ULL,0 );
void
TimeValue::normalize( void ) {
if ( nanos_ >= NANOSECONDS_PER_SECOND ) {
do {
seconds_++;
nanos_ -= NANOSECONDS_PER_SECOND;
} while ( nanos_ >= NANOSECONDS_PER_SECOND );
} else if (nanos_ <= -NANOSECONDS_PER_SECOND ) {
do {
seconds_--;
nanos_ += NANOSECONDS_PER_SECOND;
} while (nanos_ <= -NANOSECONDS_PER_SECOND);
}
if (seconds_ >= 1 && nanos_ < 0) {
seconds_--;
nanos_ += NANOSECONDS_PER_SECOND;
} else if (seconds_ < 0 && nanos_ > 0) {
seconds_++;
nanos_ -= NANOSECONDS_PER_SECOND;
}
}
}
/// Include the platform specific portion of TimeValue class
#include "platform/TimeValue.cpp"
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab