94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
//===- Support/Chrono.cpp - Utilities for Timing Manipulation ---*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Support/Chrono.h"
|
|
#include "llvm/Config/llvm-config.h"
|
|
#include "llvm/Support/Format.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
|
|
namespace llvm {
|
|
|
|
using namespace sys;
|
|
|
|
const char llvm::detail::unit<std::ratio<3600>>::value[] = "h";
|
|
const char llvm::detail::unit<std::ratio<60>>::value[] = "m";
|
|
const char llvm::detail::unit<std::ratio<1>>::value[] = "s";
|
|
const char llvm::detail::unit<std::milli>::value[] = "ms";
|
|
const char llvm::detail::unit<std::micro>::value[] = "us";
|
|
const char llvm::detail::unit<std::nano>::value[] = "ns";
|
|
|
|
static inline struct tm getStructTM(TimePoint<> TP) {
|
|
struct tm Storage;
|
|
std::time_t OurTime = toTimeT(TP);
|
|
|
|
#if defined(LLVM_ON_UNIX)
|
|
struct tm *LT = ::localtime_r(&OurTime, &Storage);
|
|
assert(LT);
|
|
(void)LT;
|
|
#endif
|
|
#if defined(_WIN32)
|
|
int Error = ::localtime_s(&Storage, &OurTime);
|
|
assert(!Error);
|
|
(void)Error;
|
|
#endif
|
|
|
|
return Storage;
|
|
}
|
|
|
|
raw_ostream &operator<<(raw_ostream &OS, TimePoint<> TP) {
|
|
struct tm LT = getStructTM(TP);
|
|
char Buffer[sizeof("YYYY-MM-DD HH:MM:SS")];
|
|
strftime(Buffer, sizeof(Buffer), "%Y-%m-%d %H:%M:%S", <);
|
|
return OS << Buffer << '.'
|
|
<< format("%.9lu",
|
|
long((TP.time_since_epoch() % std::chrono::seconds(1))
|
|
.count()));
|
|
}
|
|
|
|
void format_provider<TimePoint<>>::format(const TimePoint<> &T, raw_ostream &OS,
|
|
StringRef Style) {
|
|
using namespace std::chrono;
|
|
TimePoint<seconds> Truncated = time_point_cast<seconds>(T);
|
|
auto Fractional = T - Truncated;
|
|
struct tm LT = getStructTM(Truncated);
|
|
// Handle extensions first. strftime mangles unknown %x on some platforms.
|
|
if (Style.empty()) Style = "%Y-%m-%d %H:%M:%S.%N";
|
|
std::string Format;
|
|
raw_string_ostream FStream(Format);
|
|
for (unsigned I = 0; I < Style.size(); ++I) {
|
|
if (Style[I] == '%' && Style.size() > I + 1) switch (Style[I + 1]) {
|
|
case 'L': // Milliseconds, from Ruby.
|
|
FStream << llvm::format(
|
|
"%.3lu", (long)duration_cast<milliseconds>(Fractional).count());
|
|
++I;
|
|
continue;
|
|
case 'f': // Microseconds, from Python.
|
|
FStream << llvm::format(
|
|
"%.6lu", (long)duration_cast<microseconds>(Fractional).count());
|
|
++I;
|
|
continue;
|
|
case 'N': // Nanoseconds, from date(1).
|
|
FStream << llvm::format(
|
|
"%.6lu", (long)duration_cast<nanoseconds>(Fractional).count());
|
|
++I;
|
|
continue;
|
|
case '%': // Consume %%, so %%f parses as (%%)f not %(%f)
|
|
FStream << "%%";
|
|
++I;
|
|
continue;
|
|
}
|
|
FStream << Style[I];
|
|
}
|
|
FStream.flush();
|
|
char Buffer[256]; // Should be enough for anywhen.
|
|
size_t Len = strftime(Buffer, sizeof(Buffer), Format.c_str(), <);
|
|
OS << (Len ? Buffer : "BAD-DATE-FORMAT");
|
|
}
|
|
|
|
} // namespace llvm
|