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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
//===- Support/Chrono.cpp - Utilities for Timing Manipulation ---*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Chrono.h"
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#include "llvm/Config/llvm-config.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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using namespace sys;
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const char llvm::detail::unit<std::ratio<3600>>::value[] = "h";
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const char llvm::detail::unit<std::ratio<60>>::value[] = "m";
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const char llvm::detail::unit<std::ratio<1>>::value[] = "s";
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const char llvm::detail::unit<std::milli>::value[] = "ms";
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const char llvm::detail::unit<std::micro>::value[] = "us";
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const char llvm::detail::unit<std::nano>::value[] = "ns";
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static inline struct tm getStructTM(TimePoint<> TP) {
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struct tm Storage;
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std::time_t OurTime = toTimeT(TP);
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#if defined(LLVM_ON_UNIX)
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struct tm *LT = ::localtime_r(&OurTime, &Storage);
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assert(LT);
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(void)LT;
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#endif
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#if defined(_WIN32)
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int Error = ::localtime_s(&Storage, &OurTime);
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assert(!Error);
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(void)Error;
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#endif
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return Storage;
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}
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raw_ostream &operator<<(raw_ostream &OS, TimePoint<> TP) {
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struct tm LT = getStructTM(TP);
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char Buffer[sizeof("YYYY-MM-DD HH:MM:SS")];
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strftime(Buffer, sizeof(Buffer), "%Y-%m-%d %H:%M:%S", <);
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return OS << Buffer << '.'
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<< format("%.9lu",
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long((TP.time_since_epoch() % std::chrono::seconds(1))
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.count()));
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}
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void format_provider<TimePoint<>>::format(const TimePoint<> &T, raw_ostream &OS,
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StringRef Style) {
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using namespace std::chrono;
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TimePoint<seconds> Truncated = time_point_cast<seconds>(T);
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auto Fractional = T - Truncated;
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struct tm LT = getStructTM(Truncated);
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// Handle extensions first. strftime mangles unknown %x on some platforms.
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if (Style.empty()) Style = "%Y-%m-%d %H:%M:%S.%N";
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std::string Format;
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raw_string_ostream FStream(Format);
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for (unsigned I = 0; I < Style.size(); ++I) {
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if (Style[I] == '%' && Style.size() > I + 1) switch (Style[I + 1]) {
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case 'L': // Milliseconds, from Ruby.
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FStream << llvm::format(
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"%.3lu", (long)duration_cast<milliseconds>(Fractional).count());
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++I;
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continue;
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case 'f': // Microseconds, from Python.
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FStream << llvm::format(
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"%.6lu", (long)duration_cast<microseconds>(Fractional).count());
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++I;
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continue;
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case 'N': // Nanoseconds, from date(1).
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FStream << llvm::format(
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"%.6lu", (long)duration_cast<nanoseconds>(Fractional).count());
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++I;
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continue;
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case '%': // Consume %%, so %%f parses as (%%)f not %(%f)
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FStream << "%%";
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++I;
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continue;
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}
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FStream << Style[I];
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}
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FStream.flush();
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char Buffer[256]; // Should be enough for anywhen.
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size_t Len = strftime(Buffer, sizeof(Buffer), Format.c_str(), <);
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OS << (Len ? Buffer : "BAD-DATE-FORMAT");
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}
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} // namespace llvm
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