forked from OSchip/llvm-project
55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
//===- Unix/TimeValue.cpp - Unix TimeValue Implementation -------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the Unix specific portion of the TimeValue class.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only generic UNIX code that
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//=== is guaranteed to work on *all* UNIX variants.
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//===----------------------------------------------------------------------===//
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#include "Unix.h"
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namespace llvm {
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using namespace sys;
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std::string TimeValue::str() const {
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time_t OurTime = time_t(this->toEpochTime());
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struct tm Storage;
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struct tm *LT = ::localtime_r(&OurTime, &Storage);
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assert(LT);
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char Buffer1[sizeof("YYYY-MM-DD HH:MM:SS")];
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strftime(Buffer1, sizeof(Buffer1), "%Y-%m-%d %H:%M:%S", LT);
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char Buffer2[sizeof("YYYY-MM-DD HH:MM:SS.MMMUUUNNN")];
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snprintf(Buffer2, sizeof(Buffer2), "%s.%.9u", Buffer1, this->nanoseconds());
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return std::string(Buffer2);
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}
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TimeValue TimeValue::now() {
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struct timeval the_time;
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timerclear(&the_time);
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if (0 != ::gettimeofday(&the_time,nullptr)) {
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// This is *really* unlikely to occur because the only gettimeofday
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// errors concern the timezone parameter which we're passing in as 0.
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// In the unlikely case it does happen, just return MinTime, no error
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// message needed.
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return MinTime();
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}
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return TimeValue(
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static_cast<TimeValue::SecondsType>( the_time.tv_sec +
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PosixZeroTimeSeconds ),
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static_cast<TimeValue::NanoSecondsType>( the_time.tv_usec *
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NANOSECONDS_PER_MICROSECOND ) );
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}
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}
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