maurice/snix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Changes imported from Abseil "staging" branch:

Browse source 
- b527a3e4b36b644ac424e3c525b1cd393f6f6c40 Fix some typos in the usage examples by Jorg Brown <jorg@google.com>
  - 82be4a9adf3bb0ddafc0d46274969c99afffe870 Fix typo in optional.h comment. by Abseil Team <absl-team@google.com>
  - d6ee63bf8fc51fba074c23b33cebc28c808d7f07 Remove internal-only identifiers from code. by Daniel Katz <katzdm@google.com>
  - f9c3ad2f0d73f53b21603638af8b4bed636e79f4 Use easier understandable names for absl::StartsWith and ... by Abseil Team <absl-team@google.com>
  - 7c16c14fefee89c927b8789d6043c4691bcffc9b Add -Wno-missing-prototypes back to the LLVM copts. by Derek Mauro <dmauro@google.com>
  - 2f4b7d2e50c7023240242f1e15db60ccd7e8768d IWYU | absl/strings by Juemin Yang <jueminyang@google.com>
  - a99cbcc1daa34a2d6a2bb26de275e05173cc77e9 IWYU | absl/type by Juemin Yang <jueminyang@google.com>
  - 12e1146d0fc76c071d7e0ebaabb62f0a984fae66 Use LLVM_FLAGS and LLVM_TEST_FLAGS when --compiler=llvm. by Derek Mauro <dmauro@google.com>
  - cd6bea616abda558d0bace5bd77455662a233688 IWYU | absl/debugging by Juemin Yang <jueminyang@google.com>
  - d9a7382e59d46a8581b6b7a31cd5a48bb89326e9 IWYU | absl/synchronization by Juemin Yang <jueminyang@google.com>
  - 07ec7d6d5a4a666f4183c5d0ed9c342baa7b24bc IWYU | absl/numeric by Juemin Yang <jueminyang@google.com>
  - 12bfe40051f4270f8707e191af5652f83f2f750c Remove the RoundTrip{Float,Double}ToBuffer routines from ... by Jorg Brown <jorg@google.com>
  - eeb4fd67c9d97f66cb9475c3c5e51ab132f1c810 Adds conversion functions for converting between absl/tim... by Greg Miller <jgm@google.com>
  - 59a2108d05d4ea85dc5cc11e49b2cd2335d4295a Change Substitute to use %.6g formatting rather than 15/1... by Jorg Brown <jorg@google.com>
  - 394becb48e0fcd161642cdaac5120d32567e0ef8 IWYU | absl/meta by Juemin Yang <jueminyang@google.com>
  - 1e5da6e8da336699b2469dcf6dda025b9b0ec4c9 Rewrite atomic_hook.h to not use std::atomic<T*> under Wi... by Greg Falcon <gfalcon@google.com>

GitOrigin-RevId: b527a3e4b36b644ac424e3c525b1cd393f6f6c40
Change-Id: I14e331d91c956ef045ac7927091a9f179716de0c
This commit is contained in:
Abseil Team 2017-09-24 08:20:48 -07:00 • committed by Derek Mauro
parent 53c239d1fc
commit cf6ab6bb2b
68 changed files with 629 additions and 831 deletions
Download patch file Download diff file Expand all files Collapse all files

164
absl/time/time.h
View file

@ -361,7 +361,7 @@ Duration Hours(T n) {
// Example:
//
// absl::Duration d = absl::Milliseconds(1500);
// int64_t isec = ToInt64Seconds(d); // isec == 1
// int64_t isec = ToInt64Seconds(d); // isec == 1
int64_t ToInt64Nanoseconds(Duration d);
int64_t ToInt64Microseconds(Duration d);
int64_t ToInt64Milliseconds(Duration d);
@ -391,6 +391,46 @@ double ToDoubleSeconds(Duration d);
double ToDoubleMinutes(Duration d);
double ToDoubleHours(Duration d);
// FromChrono()
//
// Converts any of the pre-defined std::chrono durations to an absl::Duration.
//
// Example:
//
// std::chrono::milliseconds ms(123);
// absl::Duration d = absl::FromChrono(ms);
constexpr Duration FromChrono(const std::chrono::nanoseconds& d);
constexpr Duration FromChrono(const std::chrono::microseconds& d);
constexpr Duration FromChrono(const std::chrono::milliseconds& d);
constexpr Duration FromChrono(const std::chrono::seconds& d);
constexpr Duration FromChrono(const std::chrono::minutes& d);
constexpr Duration FromChrono(const std::chrono::hours& d);
// ToChronoNanoseconds()
// ToChronoMicroseconds()
// ToChronoMilliseconds()
// ToChronoSeconds()
// ToChronoMinutes()
// ToChronoHours()
//
// Converts an absl::Duration to any of the pre-defined std::chrono durations.
// If overflow would occur, the returned value will saturate at the min/max
// chrono duration value instead.
//
// Example:
//
// absl::Duration d = absl::Microseconds(123);
// auto x = absl::ToChronoMicroseconds(d);
// auto y = absl::ToChronoNanoseconds(d); // x == y
// auto z = absl::ToChronoSeconds(absl::InfiniteDuration());
// // z == std::chrono::seconds::max()
std::chrono::nanoseconds ToChronoNanoseconds(Duration d);
std::chrono::microseconds ToChronoMicroseconds(Duration d);
std::chrono::milliseconds ToChronoMilliseconds(Duration d);
std::chrono::seconds ToChronoSeconds(Duration d);
std::chrono::minutes ToChronoMinutes(Duration d);
std::chrono::hours ToChronoHours(Duration d);
// InfiniteDuration()
//
// Returns an infinite `Duration`. To get a `Duration` representing negative
@ -445,7 +485,7 @@ inline std::ostream& operator<<(std::ostream& os, Duration d) {
bool ParseDuration(const std::string& dur_string, Duration* d);
// Flag Support
// TODO(b/63899288) copybara strip once dependencies are removed.
// TODO(absl-team): Remove once dependencies are removed.
// ParseFlag()
//
@ -790,6 +830,30 @@ Time TimeFromTimeval(timeval tv);
timespec ToTimespec(Time t);
timeval ToTimeval(Time t);
// FromChrono()
//
// Converts a std::chrono::system_clock::time_point to an absl::Time.
//
// Example:
//
// auto tp = std::chrono::system_clock::from_time_t(123);
// absl::Time t = absl::FromChrono(tp);
// // t == absl::FromTimeT(123)
Time FromChrono(const std::chrono::system_clock::time_point& tp);
// ToChronoTime()
//
// Converts an absl::Time to a std::chrono::system_clock::time_point. If
// overflow would occur, the returned value will saturate at the min/max time
// point value instead.
//
// Example:
//
// absl::Time t = absl::FromTimeT(123);
// auto tp = absl::ToChronoTime(t);
// // tp == std::chrono::system_clock::from_time_t(123);
std::chrono::system_clock::time_point ToChronoTime(absl::Time);
// RFC3339_full
// RFC3339_sec
//
@ -917,7 +981,7 @@ bool ParseTime(const std::string& format, const std::string& input,
bool ParseTime(const std::string& format, const std::string& input, TimeZone tz,
Time* time, std::string* err);
// TODO(b/63899288) copybara strip once dependencies are removed.
// TODO(absl-team): Remove once dependencies are removed.
// ParseFlag()
// UnparseFlag()
@ -1072,6 +1136,81 @@ constexpr int64_t NegateAndSubtractOne(int64_t n) {
// knowledge, we would need to add-in/subtract-out UnixEpoch() respectively.
constexpr Time FromUnixDuration(Duration d) { return Time(d); }
constexpr Duration ToUnixDuration(Time t) { return t.rep_; }
template <std::intmax_t N>
constexpr absl::Duration FromInt64(int64_t v, std::ratio<1, N>) {
static_assert(0 < N && N <= 1000 * 1000 * 1000, "Unsupported ratio");
// Subsecond ratios cannot overflow.
return MakeNormalizedDuration(
v / N, v % N * kTicksPerNanosecond * 1000 * 1000 * 1000 / N);
}
constexpr absl::Duration FromInt64(int64_t v, std::ratio<60>) {
return Minutes(v);
}
constexpr absl::Duration FromInt64(int64_t v, std::ratio<3600>) {
return Hours(v);
}
// IsValidRep64<T>(0) is true if the expression `int64_t{std::declval<T>()}` is
// valid. That is, if a T can be assigned to an int64_t without narrowing.
template <typename T>
constexpr auto IsValidRep64(int)
-> decltype(int64_t{std::declval<T>()}, bool()) {
return true;
}
template <typename T>
constexpr auto IsValidRep64(char) -> bool {
return false;
}
// Converts a std::chrono::duration to an absl::Duration.
template <typename Rep, typename Period>
constexpr absl::Duration FromChrono(
const std::chrono::duration<Rep, Period>& d) {
static_assert(IsValidRep64<Rep>(0), "duration::rep is invalid");
return FromInt64(int64_t{d.count()}, Period{});
}
template <typename Ratio>
int64_t ToInt64(absl::Duration d, Ratio) {
// Note: This may be used on MSVC, which may have a system_clock period of
// std::ratio<1, 10 * 1000 * 1000>
return ToInt64Seconds(d * Ratio::den / Ratio::num);
}
// Fastpath implementations for the 6 common duration units.
inline int64_t ToInt64(absl::Duration d, std::nano) {
return ToInt64Nanoseconds(d);
}
inline int64_t ToInt64(absl::Duration d, std::micro) {
return ToInt64Microseconds(d);
}
inline int64_t ToInt64(absl::Duration d, std::milli) {
return ToInt64Milliseconds(d);
}
inline int64_t ToInt64(absl::Duration d, std::ratio<1>) {
return ToInt64Seconds(d);
}
inline int64_t ToInt64(absl::Duration d, std::ratio<60>) {
return ToInt64Minutes(d);
}
inline int64_t ToInt64(absl::Duration d, std::ratio<3600>) {
return ToInt64Hours(d);
}
// Converts an absl::Duration to a chrono duration of type T.
template <typename T>
T ToChronoDuration(absl::Duration d) {
using Rep = typename T::rep;
using Period = typename T::period;
static_assert(IsValidRep64<Rep>(0), "duration::rep is invalid");
if (time_internal::IsInfiniteDuration(d))
return d < ZeroDuration() ? T::min() : T::max();
const auto v = ToInt64(d, Period{});
if (v > std::numeric_limits<Rep>::max()) return T::max();
if (v < std::numeric_limits<Rep>::min()) return T::min();
return T{v};
}
} // namespace time_internal
constexpr bool operator<(Duration lhs, Duration rhs) {
@ -1156,6 +1295,25 @@ constexpr Duration InfiniteDuration() {
return time_internal::MakeDuration(std::numeric_limits<int64_t>::max(), ~0U);
}
constexpr Duration FromChrono(const std::chrono::nanoseconds& d) {
return time_internal::FromChrono(d);
}
constexpr Duration FromChrono(const std::chrono::microseconds& d) {
return time_internal::FromChrono(d);
}
constexpr Duration FromChrono(const std::chrono::milliseconds& d) {
return time_internal::FromChrono(d);
}
constexpr Duration FromChrono(const std::chrono::seconds& d) {
return time_internal::FromChrono(d);
}
constexpr Duration FromChrono(const std::chrono::minutes& d) {
return time_internal::FromChrono(d);
}
constexpr Duration FromChrono(const std::chrono::hours& d) {
return time_internal::FromChrono(d);
}
constexpr Time FromUnixNanos(int64_t ns) {
return time_internal::FromUnixDuration(Nanoseconds(ns));
}