//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: availability-filesystem-missing
// <filesystem>
// typedef TrivialClock file_time_type;
// ADDITIONAL_COMPILE_FLAGS: -I %{libcxx-dir}/src -Wno-macro-redefined
#include <cassert>
#include <chrono>
#include <cstddef>
#include <filesystem>
#include <limits>
#include <string>
#include <type_traits>
#include "filesystem/time_utils.h"
#ifndef __SIZEOF_INT128__
#define TEST_HAS_NO_INT128_T
#endif
using namespace std::chrono;
namespace fs = std::filesystem;
using fs::file_time_type;
using fs::detail::time_util;
#ifdef TEST_HAS_NO_INT128_T
static_assert(sizeof(fs::file_time_type::rep) <= 8, "");
#endif
enum TestKind { TK_128Bit, TK_64Bit, TK_32Bit, TK_FloatingPoint };
template <class TimeT>
constexpr TestKind getTimeTTestKind() {
if (sizeof(TimeT) == 8 && !std::is_floating_point<TimeT>::value)
return TK_64Bit;
else if (sizeof(TimeT) == 4 && !std::is_floating_point<TimeT>::value)
return TK_32Bit;
else if (std::is_floating_point<TimeT>::value)
return TK_FloatingPoint;
else
assert(false && "test kind not supported");
}
template <class FileTimeT>
constexpr TestKind getFileTimeTestKind() {
using Rep = typename FileTimeT::rep;
if (std::is_floating_point<Rep>::value)
return TK_FloatingPoint;
else if (sizeof(Rep) == 16)
return TK_128Bit;
else if (sizeof(Rep) == 8)
return TK_64Bit;
else
assert(false && "test kind not supported");
}
template <class FileTimeT, class TimeT, class TimeSpecT,
class Base = time_util<FileTimeT, TimeT, TimeSpecT>,
TestKind = getTimeTTestKind<TimeT>(),
TestKind = getFileTimeTestKind<FileTimeT>()>
struct test_case;
template <class FileTimeT, class TimeT, class TimeSpecT, class Base>
struct test_case<FileTimeT, TimeT, TimeSpecT, Base, TK_64Bit, TK_128Bit>
: public Base {
using Base::convert_from_timespec;
using Base::convert_to_timespec;
using Base::is_representable;
using Base::max_nsec;
using Base::max_seconds;
using Base::min_nsec_timespec;
using Base::min_seconds;
static constexpr auto max_time_t = std::numeric_limits<TimeT>::max();
static constexpr auto min_time_t = std::numeric_limits<TimeT>::min();
static constexpr bool test_timespec() {
static_assert(is_representable(TimeSpecT{max_time_t, 0}), "");
static_assert(is_representable(TimeSpecT{max_time_t, 999999999}), "");
static_assert(is_representable(TimeSpecT{max_time_t, 1000000000}), "");
static_assert(is_representable(TimeSpecT{max_time_t, max_nsec}), "");
static_assert(is_representable(TimeSpecT{min_time_t, 0}), "");
static_assert(is_representable(TimeSpecT{min_time_t, 999999999}), "");
static_assert(is_representable(TimeSpecT{min_time_t, 1000000000}), "");
static_assert(is_representable(TimeSpecT{min_time_t, min_nsec_timespec}),
"");
return true;
}
static constexpr bool test_file_time_type() {
// This kinda sucks. Oh well.
static_assert(!Base::is_representable(FileTimeT::max()), "");
static_assert(!Base::is_representable(FileTimeT::min()), "");
return true;
}
static constexpr bool check_round_trip(TimeSpecT orig) {
TimeSpecT new_ts = {};
FileTimeT out = convert_from_timespec(orig);
assert(convert_to_timespec(new_ts, out));
return new_ts.tv_sec == orig.tv_sec && new_ts.tv_nsec == orig.tv_nsec;
}
static constexpr bool test_convert_timespec() {
static_assert(check_round_trip({0, 0}), "");
static_assert(check_round_trip({0, 1}), "");
static_assert(check_round_trip({1, 1}), "");
static_assert(check_round_trip({-1, 1}), "");
static_assert(check_round_trip({max_time_t, max_nsec}), "");
static_assert(check_round_trip({max_time_t, 123}), "");
static_assert(check_round_trip({min_time_t, min_nsec_timespec}), "");
static_assert(check_round_trip({min_time_t, 123}), "");
return true;
}
static bool test() {
static_assert(test_timespec(), "");
static_assert(test_file_time_type(), "");
static_assert(test_convert_timespec(), "");
return true;
}
};
template <class FileTimeT, class TimeT, class TimeSpecT, class Base>
struct test_case<FileTimeT, TimeT, TimeSpecT, Base, TK_32Bit, TK_128Bit>
: public test_case<FileTimeT, TimeT, TimeSpecT, Base, TK_64Bit, TK_128Bit> {
};
template <class FileTimeT, class TimeT, class TimeSpecT, class Base>
struct test_case<FileTimeT, TimeT, TimeSpecT, Base, TK_64Bit, TK_64Bit>
: public Base {
using Base::convert_from_timespec;
using Base::is_representable;
using Base::max_nsec;
using Base::max_seconds;
using Base::min_nsec_timespec;
using Base::min_seconds;
static constexpr auto max_time_t = std::numeric_limits<TimeT>::max();
static constexpr auto min_time_t = std::numeric_limits<TimeT>::min();
static constexpr bool test_timespec() {
static_assert(is_representable(TimeSpecT{max_seconds, max_nsec}), "");
static_assert(!is_representable(TimeSpecT{max_seconds + 1, 0}), "");
static_assert(!is_representable(TimeSpecT{max_seconds, max_nsec + 1}), "");
static_assert(!is_representable(TimeSpecT{max_time_t, 0}), "");
static_assert(is_representable(TimeSpecT{min_seconds, 0}), "");
static_assert(
is_representable(TimeSpecT{min_seconds - 1, min_nsec_timespec}), "");
static_assert(
is_representable(TimeSpecT{min_seconds - 1, min_nsec_timespec + 1}),
"");
static_assert(
!is_representable(TimeSpecT{min_seconds - 1, min_nsec_timespec - 1}),
"");
static_assert(!is_representable(TimeSpecT{min_time_t, 999999999}), "");
return true;
}
static constexpr bool test_file_time_type() {
static_assert(Base::is_representable(FileTimeT::max()), "");
static_assert(Base::is_representable(FileTimeT::min()), "");
return true;
}
static constexpr bool test_convert_timespec() {
static_assert(convert_from_timespec(TimeSpecT{max_seconds, max_nsec}) ==
FileTimeT::max(),
"");
static_assert(convert_from_timespec(TimeSpecT{max_seconds, max_nsec - 1}) <
FileTimeT::max(),
"");
static_assert(convert_from_timespec(TimeSpecT{max_seconds - 1, 999999999}) <
FileTimeT::max(),
"");
static_assert(convert_from_timespec(TimeSpecT{
min_seconds - 1, min_nsec_timespec}) == FileTimeT::min(),
"");
static_assert(convert_from_timespec(
TimeSpecT{min_seconds - 1, min_nsec_timespec + 1}) >
FileTimeT::min(),
"");
static_assert(convert_from_timespec(TimeSpecT{min_seconds, 0}) >
FileTimeT::min(),
"");
return true;
}
static bool test() {
static_assert(test_timespec(), "");
static_assert(test_file_time_type(), "");
static_assert(test_convert_timespec(), "");
return true;
}
};
template <class FileTimeT, class TimeT, class TimeSpecT, class Base>
struct test_case<FileTimeT, TimeT, TimeSpecT, Base, TK_32Bit, TK_64Bit>
: public Base {
static constexpr auto max_time_t = std::numeric_limits<TimeT>::max();
static constexpr auto min_time_t = std::numeric_limits<TimeT>::min();
using Base::convert_from_timespec;
using Base::is_representable;
using Base::max_nsec;
using Base::max_seconds;
using Base::min_nsec_timespec;
using Base::min_seconds;
static constexpr bool test_timespec() {
static_assert(is_representable(TimeSpecT{max_time_t, 999999999}), "");
static_assert(is_representable(TimeSpecT{max_time_t, 1000000000}), "");
static_assert(is_representable(TimeSpecT{min_time_t, 0}), "");
return true;
}
static constexpr bool test_file_time_type() {
static_assert(!is_representable(FileTimeT::max()), "");
static_assert(!is_representable(FileTimeT::min()), "");
static_assert(is_representable(FileTimeT(seconds(max_time_t))), "");
static_assert(is_representable(FileTimeT(seconds(min_time_t))), "");
return true;
}
static constexpr bool test_convert_timespec() {
// FIXME add tests for 32 bit builds
return true;
}
static bool test() {
static_assert(test_timespec(), "");
static_assert(test_file_time_type(), "");
static_assert(test_convert_timespec(), "");
return true;
}
};
template <class FileTimeT, class TimeT, class TimeSpec, class Base,
TestKind FileTimeTKind>
struct test_case<FileTimeT, TimeT, TimeSpec, Base, TK_FloatingPoint,
FileTimeTKind> : public Base {
static bool test() { return true; }
};
template <class TimeT, class NSecT = long>
struct TestTimeSpec {
TimeT tv_sec;
NSecT tv_nsec;
};
template <class Dur>
struct TestClock {
typedef Dur duration;
typedef typename duration::rep rep;
typedef typename duration::period period;
typedef std::chrono::time_point<TestClock> time_point;
static constexpr const bool is_steady = false;
static time_point now() noexcept { return {}; }
};
template <class IntType, class Period = std::micro>
using TestFileTimeT = time_point<TestClock<duration<IntType, Period> > >;
int main(int, char**) {
{ assert((test_case<file_time_type, time_t, struct timespec>::test())); }
{
assert((test_case<TestFileTimeT<std::int64_t>, std::int64_t,
TestTimeSpec<std::int64_t, long> >::test()));
}
{
assert((test_case<TestFileTimeT<long long>, std::int32_t,
TestTimeSpec<std::int32_t, std::int32_t> >::test()));
}
{
// Test that insane platforms like ppc64 linux, which use long double as time_t,
// at least compile.
assert((test_case<TestFileTimeT<long double>, double,
TestTimeSpec<long double, long> >::test()));
}
#ifndef TEST_HAS_NO_INT128_T
{
assert((test_case<TestFileTimeT<__int128_t, std::nano>, std::int64_t,
TestTimeSpec<std::int64_t, long> >::test()));
}
{
assert((test_case<TestFileTimeT<__int128_t, std::nano>, std::int32_t,
TestTimeSpec<std::int32_t, std::int32_t> >::test()));
}
#endif
return 0;
}
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