mirror of
https://github.com/yuzu-emu/ext-boost.git
synced 2025-01-20 21:11:05 +00:00
479 lines
15 KiB
C++
479 lines
15 KiB
C++
#ifndef BOOST_THREAD_DETAIL_PLATFORM_TIME_HPP
|
|
#define BOOST_THREAD_DETAIL_PLATFORM_TIME_HPP
|
|
// (C) Copyright 2007-8 Anthony Williams
|
|
// (C) Copyright 2012 Vicente J. Botet Escriba
|
|
//
|
|
// Distributed under the Boost Software License, Version 1.0. (See
|
|
// accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
#include <boost/thread/detail/config.hpp>
|
|
#include <boost/thread/thread_time.hpp>
|
|
#if defined BOOST_THREAD_USES_DATETIME
|
|
#include <boost/date_time/posix_time/conversion.hpp>
|
|
#endif
|
|
#ifndef _WIN32
|
|
#include <unistd.h>
|
|
#endif
|
|
#ifdef BOOST_THREAD_USES_CHRONO
|
|
#include <boost/chrono/duration.hpp>
|
|
#include <boost/chrono/system_clocks.hpp>
|
|
#include <boost/chrono/ceil.hpp>
|
|
#endif
|
|
|
|
#if defined(BOOST_THREAD_CHRONO_WINDOWS_API)
|
|
#include <boost/detail/winapi/time.hpp>
|
|
#include <boost/detail/winapi/timers.hpp>
|
|
#include <boost/thread/win32/thread_primitives.hpp>
|
|
#elif defined(BOOST_THREAD_CHRONO_MAC_API)
|
|
#include <sys/time.h> //for gettimeofday and timeval
|
|
#include <mach/mach_time.h> // mach_absolute_time, mach_timebase_info_data_t
|
|
|
|
#else
|
|
#include <time.h> // for clock_gettime
|
|
#endif
|
|
|
|
#include <limits>
|
|
|
|
#include <boost/config/abi_prefix.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
//typedef boost::int_least64_t time_max_t;
|
|
typedef boost::intmax_t time_max_t;
|
|
|
|
#if defined BOOST_THREAD_CHRONO_MAC_API
|
|
namespace threads
|
|
{
|
|
|
|
namespace chrono_details
|
|
{
|
|
|
|
// steady_clock
|
|
|
|
// Note, in this implementation steady_clock and high_resolution_clock
|
|
// are the same clock. They are both based on mach_absolute_time().
|
|
// mach_absolute_time() * MachInfo.numer / MachInfo.denom is the number of
|
|
// nanoseconds since the computer booted up. MachInfo.numer and MachInfo.denom
|
|
// are run time constants supplied by the OS. This clock has no relationship
|
|
// to the Gregorian calendar. It's main use is as a high resolution timer.
|
|
|
|
// MachInfo.numer / MachInfo.denom is often 1 on the latest equipment. Specialize
|
|
// for that case as an optimization.
|
|
|
|
inline time_max_t
|
|
steady_simplified()
|
|
{
|
|
return mach_absolute_time();
|
|
}
|
|
|
|
inline double compute_steady_factor(kern_return_t& err)
|
|
{
|
|
mach_timebase_info_data_t MachInfo;
|
|
err = mach_timebase_info(&MachInfo);
|
|
if ( err != 0 ) {
|
|
return 0;
|
|
}
|
|
return static_cast<double>(MachInfo.numer) / MachInfo.denom;
|
|
}
|
|
|
|
inline time_max_t steady_full()
|
|
{
|
|
kern_return_t err;
|
|
const double factor = chrono_details::compute_steady_factor(err);
|
|
if (err != 0)
|
|
{
|
|
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
|
|
}
|
|
return static_cast<time_max_t>(mach_absolute_time() * factor);
|
|
}
|
|
|
|
|
|
typedef time_max_t (*FP)();
|
|
|
|
inline FP init_steady_clock(kern_return_t & err)
|
|
{
|
|
mach_timebase_info_data_t MachInfo;
|
|
err = mach_timebase_info(&MachInfo);
|
|
if ( err != 0 )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
if (MachInfo.numer == MachInfo.denom)
|
|
{
|
|
return &chrono_details::steady_simplified;
|
|
}
|
|
return &chrono_details::steady_full;
|
|
}
|
|
|
|
}
|
|
}
|
|
#endif
|
|
|
|
namespace detail
|
|
{
|
|
#if defined BOOST_THREAD_CHRONO_POSIX_API || defined BOOST_THREAD_CHRONO_MAC_API
|
|
inline timespec ns_to_timespec(boost::time_max_t const& ns)
|
|
{
|
|
boost::time_max_t s = ns / 1000000000l;
|
|
timespec ts;
|
|
ts.tv_sec = static_cast<long> (s);
|
|
ts.tv_nsec = static_cast<long> (ns - s * 1000000000l);
|
|
return ts;
|
|
}
|
|
inline boost::time_max_t timespec_to_ns(timespec const& ts)
|
|
{
|
|
return static_cast<boost::time_max_t>(ts.tv_sec) * 1000000000l + ts.tv_nsec;
|
|
}
|
|
#endif
|
|
|
|
struct platform_duration
|
|
{
|
|
#if defined BOOST_THREAD_CHRONO_POSIX_API || defined BOOST_THREAD_CHRONO_MAC_API
|
|
explicit platform_duration(timespec const& v) : ts_val(v) {}
|
|
timespec const& getTs() const { return ts_val; }
|
|
|
|
explicit platform_duration(boost::time_max_t const& ns = 0) : ts_val(ns_to_timespec(ns)) {}
|
|
boost::time_max_t getNs() const { return timespec_to_ns(ts_val); }
|
|
#else
|
|
explicit platform_duration(boost::time_max_t const& ns = 0) : ns_val(ns) {}
|
|
boost::time_max_t getNs() const { return ns_val; }
|
|
#endif
|
|
|
|
#if defined BOOST_THREAD_USES_DATETIME
|
|
platform_duration(boost::posix_time::time_duration const& rel_time)
|
|
{
|
|
#if defined BOOST_THREAD_CHRONO_POSIX_API || defined BOOST_THREAD_CHRONO_MAC_API
|
|
ts_val.tv_sec = rel_time.total_seconds();
|
|
ts_val.tv_nsec = static_cast<long>(rel_time.fractional_seconds() * (1000000000l / rel_time.ticks_per_second()));
|
|
#else
|
|
ns_val = static_cast<boost::time_max_t>(rel_time.total_seconds()) * 1000000000l;
|
|
ns_val += rel_time.fractional_seconds() * (1000000000l / rel_time.ticks_per_second());
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if defined BOOST_THREAD_USES_CHRONO
|
|
template <class Rep, class Period>
|
|
platform_duration(chrono::duration<Rep, Period> const& d)
|
|
{
|
|
#if defined BOOST_THREAD_CHRONO_POSIX_API || defined BOOST_THREAD_CHRONO_MAC_API
|
|
ts_val = ns_to_timespec(chrono::ceil<chrono::nanoseconds>(d).count());
|
|
#else
|
|
ns_val = chrono::ceil<chrono::nanoseconds>(d).count();
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
boost::time_max_t getMs() const
|
|
{
|
|
const boost::time_max_t ns = getNs();
|
|
// ceil/floor away from zero
|
|
if (ns >= 0)
|
|
{
|
|
// return ceiling of positive numbers
|
|
return (ns + 999999) / 1000000;
|
|
}
|
|
else
|
|
{
|
|
// return floor of negative numbers
|
|
return (ns - 999999) / 1000000;
|
|
}
|
|
}
|
|
|
|
static platform_duration zero()
|
|
{
|
|
return platform_duration(0);
|
|
}
|
|
|
|
private:
|
|
#if defined BOOST_THREAD_CHRONO_POSIX_API || defined BOOST_THREAD_CHRONO_MAC_API
|
|
timespec ts_val;
|
|
#else
|
|
boost::time_max_t ns_val;
|
|
#endif
|
|
};
|
|
|
|
inline bool operator==(platform_duration const& lhs, platform_duration const& rhs)
|
|
{
|
|
return lhs.getNs() == rhs.getNs();
|
|
}
|
|
inline bool operator!=(platform_duration const& lhs, platform_duration const& rhs)
|
|
{
|
|
return lhs.getNs() != rhs.getNs();
|
|
}
|
|
inline bool operator<(platform_duration const& lhs, platform_duration const& rhs)
|
|
{
|
|
return lhs.getNs() < rhs.getNs();
|
|
}
|
|
inline bool operator<=(platform_duration const& lhs, platform_duration const& rhs)
|
|
{
|
|
return lhs.getNs() <= rhs.getNs();
|
|
}
|
|
inline bool operator>(platform_duration const& lhs, platform_duration const& rhs)
|
|
{
|
|
return lhs.getNs() > rhs.getNs();
|
|
}
|
|
inline bool operator>=(platform_duration const& lhs, platform_duration const& rhs)
|
|
{
|
|
return lhs.getNs() >= rhs.getNs();
|
|
}
|
|
|
|
static inline platform_duration platform_milliseconds(long const& ms)
|
|
{
|
|
return platform_duration(ms * 1000000l);
|
|
}
|
|
|
|
struct real_platform_timepoint
|
|
{
|
|
#if defined BOOST_THREAD_CHRONO_POSIX_API || defined BOOST_THREAD_CHRONO_MAC_API
|
|
explicit real_platform_timepoint(timespec const& v) : dur(v) {}
|
|
timespec const& getTs() const { return dur.getTs(); }
|
|
#endif
|
|
|
|
explicit real_platform_timepoint(boost::time_max_t const& ns) : dur(ns) {}
|
|
boost::time_max_t getNs() const { return dur.getNs(); }
|
|
|
|
#if defined BOOST_THREAD_USES_DATETIME
|
|
real_platform_timepoint(boost::system_time const& abs_time)
|
|
: dur(abs_time - boost::posix_time::from_time_t(0)) {}
|
|
#endif
|
|
|
|
#if defined BOOST_THREAD_USES_CHRONO
|
|
template <class Duration>
|
|
real_platform_timepoint(chrono::time_point<chrono::system_clock, Duration> const& abs_time)
|
|
: dur(abs_time.time_since_epoch()) {}
|
|
#endif
|
|
|
|
private:
|
|
platform_duration dur;
|
|
};
|
|
|
|
inline bool operator==(real_platform_timepoint const& lhs, real_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() == rhs.getNs();
|
|
}
|
|
inline bool operator!=(real_platform_timepoint const& lhs, real_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() != rhs.getNs();
|
|
}
|
|
inline bool operator<(real_platform_timepoint const& lhs, real_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() < rhs.getNs();
|
|
}
|
|
inline bool operator<=(real_platform_timepoint const& lhs, real_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() <= rhs.getNs();
|
|
}
|
|
inline bool operator>(real_platform_timepoint const& lhs, real_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() > rhs.getNs();
|
|
}
|
|
inline bool operator>=(real_platform_timepoint const& lhs, real_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() >= rhs.getNs();
|
|
}
|
|
|
|
inline real_platform_timepoint operator+(real_platform_timepoint const& lhs, platform_duration const& rhs)
|
|
{
|
|
return real_platform_timepoint(lhs.getNs() + rhs.getNs());
|
|
}
|
|
inline real_platform_timepoint operator+(platform_duration const& lhs, real_platform_timepoint const& rhs)
|
|
{
|
|
return real_platform_timepoint(lhs.getNs() + rhs.getNs());
|
|
}
|
|
inline platform_duration operator-(real_platform_timepoint const& lhs, real_platform_timepoint const& rhs)
|
|
{
|
|
return platform_duration(lhs.getNs() - rhs.getNs());
|
|
}
|
|
|
|
struct real_platform_clock
|
|
{
|
|
static real_platform_timepoint now()
|
|
{
|
|
#if defined(BOOST_THREAD_CHRONO_WINDOWS_API)
|
|
boost::detail::winapi::FILETIME_ ft;
|
|
boost::detail::winapi::GetSystemTimeAsFileTime(&ft); // never fails
|
|
boost::time_max_t ns = ((((static_cast<boost::time_max_t>(ft.dwHighDateTime) << 32) | ft.dwLowDateTime) - 116444736000000000LL) * 100LL);
|
|
return real_platform_timepoint(ns);
|
|
#elif defined(BOOST_THREAD_CHRONO_MAC_API)
|
|
timeval tv;
|
|
::gettimeofday(&tv, 0);
|
|
timespec ts;
|
|
ts.tv_sec = tv.tv_sec;
|
|
ts.tv_nsec = tv.tv_usec * 1000;
|
|
return real_platform_timepoint(ts);
|
|
#else
|
|
timespec ts;
|
|
if ( ::clock_gettime( CLOCK_REALTIME, &ts ) )
|
|
{
|
|
BOOST_ASSERT(0 && "Boost::Thread - clock_gettime(CLOCK_REALTIME) Internal Error");
|
|
return real_platform_timepoint(0);
|
|
}
|
|
return real_platform_timepoint(ts);
|
|
#endif
|
|
}
|
|
};
|
|
|
|
#if defined(BOOST_THREAD_HAS_MONO_CLOCK)
|
|
|
|
struct mono_platform_timepoint
|
|
{
|
|
#if defined BOOST_THREAD_CHRONO_POSIX_API || defined BOOST_THREAD_CHRONO_MAC_API
|
|
|
|
explicit mono_platform_timepoint(timespec const& v) : dur(v) {}
|
|
timespec const& getTs() const { return dur.getTs(); }
|
|
#endif
|
|
|
|
explicit mono_platform_timepoint(boost::time_max_t const& ns) : dur(ns) {}
|
|
boost::time_max_t getNs() const { return dur.getNs(); }
|
|
|
|
#if defined BOOST_THREAD_USES_CHRONO
|
|
// This conversion assumes that chrono::steady_clock::time_point and mono_platform_timepoint share the same epoch.
|
|
template <class Duration>
|
|
mono_platform_timepoint(chrono::time_point<chrono::steady_clock, Duration> const& abs_time)
|
|
: dur(abs_time.time_since_epoch()) {}
|
|
#endif
|
|
|
|
// can't name this max() since that is a macro on some Windows systems
|
|
static mono_platform_timepoint getMax()
|
|
{
|
|
#if defined BOOST_THREAD_CHRONO_POSIX_API || defined BOOST_THREAD_CHRONO_MAC_API
|
|
timespec ts;
|
|
ts.tv_sec = (std::numeric_limits<time_t>::max)();
|
|
ts.tv_nsec = 999999999;
|
|
return mono_platform_timepoint(ts);
|
|
#else
|
|
boost::time_max_t ns = (std::numeric_limits<boost::time_max_t>::max)();
|
|
return mono_platform_timepoint(ns);
|
|
#endif
|
|
}
|
|
|
|
private:
|
|
platform_duration dur;
|
|
};
|
|
|
|
inline bool operator==(mono_platform_timepoint const& lhs, mono_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() == rhs.getNs();
|
|
}
|
|
inline bool operator!=(mono_platform_timepoint const& lhs, mono_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() != rhs.getNs();
|
|
}
|
|
inline bool operator<(mono_platform_timepoint const& lhs, mono_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() < rhs.getNs();
|
|
}
|
|
inline bool operator<=(mono_platform_timepoint const& lhs, mono_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() <= rhs.getNs();
|
|
}
|
|
inline bool operator>(mono_platform_timepoint const& lhs, mono_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() > rhs.getNs();
|
|
}
|
|
inline bool operator>=(mono_platform_timepoint const& lhs, mono_platform_timepoint const& rhs)
|
|
{
|
|
return lhs.getNs() >= rhs.getNs();
|
|
}
|
|
|
|
inline mono_platform_timepoint operator+(mono_platform_timepoint const& lhs, platform_duration const& rhs)
|
|
{
|
|
return mono_platform_timepoint(lhs.getNs() + rhs.getNs());
|
|
}
|
|
inline mono_platform_timepoint operator+(platform_duration const& lhs, mono_platform_timepoint const& rhs)
|
|
{
|
|
return mono_platform_timepoint(lhs.getNs() + rhs.getNs());
|
|
}
|
|
inline platform_duration operator-(mono_platform_timepoint const& lhs, mono_platform_timepoint const& rhs)
|
|
{
|
|
return platform_duration(lhs.getNs() - rhs.getNs());
|
|
}
|
|
|
|
struct mono_platform_clock
|
|
{
|
|
static mono_platform_timepoint now()
|
|
{
|
|
#if defined(BOOST_THREAD_CHRONO_WINDOWS_API)
|
|
#if defined(BOOST_THREAD_USES_CHRONO)
|
|
// Use QueryPerformanceCounter() to match the implementation in Boost
|
|
// Chrono so that chrono::steady_clock::now() and this function share the
|
|
// same epoch and so can be converted between each other.
|
|
boost::detail::winapi::LARGE_INTEGER_ freq;
|
|
if ( !boost::detail::winapi::QueryPerformanceFrequency( &freq ) )
|
|
{
|
|
BOOST_ASSERT(0 && "Boost::Thread - QueryPerformanceFrequency Internal Error");
|
|
return mono_platform_timepoint(0);
|
|
}
|
|
if ( freq.QuadPart <= 0 )
|
|
{
|
|
BOOST_ASSERT(0 && "Boost::Thread - QueryPerformanceFrequency Internal Error");
|
|
return mono_platform_timepoint(0);
|
|
}
|
|
|
|
boost::detail::winapi::LARGE_INTEGER_ pcount;
|
|
unsigned times=0;
|
|
while ( ! boost::detail::winapi::QueryPerformanceCounter( &pcount ) )
|
|
{
|
|
if ( ++times > 3 )
|
|
{
|
|
BOOST_ASSERT(0 && "Boost::Thread - QueryPerformanceCounter Internal Error");
|
|
return mono_platform_timepoint(0);
|
|
}
|
|
}
|
|
|
|
long double ns = 1000000000.0L * pcount.QuadPart / freq.QuadPart;
|
|
return mono_platform_timepoint(static_cast<boost::time_max_t>(ns));
|
|
#else
|
|
// Use GetTickCount64() because it's more reliable on older
|
|
// systems like Windows XP and Windows Server 2003.
|
|
win32::ticks_type msec = win32::gettickcount64();
|
|
return mono_platform_timepoint(msec * 1000000);
|
|
#endif
|
|
#elif defined(BOOST_THREAD_CHRONO_MAC_API)
|
|
kern_return_t err;
|
|
threads::chrono_details::FP fp = threads::chrono_details::init_steady_clock(err);
|
|
if ( err != 0 )
|
|
{
|
|
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
|
|
}
|
|
return mono_platform_timepoint(fp());
|
|
#else
|
|
timespec ts;
|
|
if ( ::clock_gettime( CLOCK_MONOTONIC, &ts ) )
|
|
{
|
|
BOOST_ASSERT(0 && "Boost::Thread - clock_gettime(CLOCK_MONOTONIC) Internal Error");
|
|
return mono_platform_timepoint(0);
|
|
}
|
|
return mono_platform_timepoint(ts);
|
|
#endif
|
|
}
|
|
};
|
|
|
|
#endif
|
|
|
|
#if defined(BOOST_THREAD_INTERNAL_CLOCK_IS_MONO)
|
|
typedef mono_platform_clock internal_platform_clock;
|
|
typedef mono_platform_timepoint internal_platform_timepoint;
|
|
#else
|
|
typedef real_platform_clock internal_platform_clock;
|
|
typedef real_platform_timepoint internal_platform_timepoint;
|
|
#endif
|
|
|
|
#ifdef BOOST_THREAD_USES_CHRONO
|
|
#ifdef BOOST_THREAD_INTERNAL_CLOCK_IS_MONO
|
|
typedef chrono::steady_clock internal_chrono_clock;
|
|
#else
|
|
typedef chrono::system_clock internal_chrono_clock;
|
|
#endif
|
|
#endif
|
|
|
|
}
|
|
}
|
|
|
|
#include <boost/config/abi_suffix.hpp>
|
|
|
|
#endif
|