Added boost header

This commit is contained in:
Christophe Riccio
2012-01-08 01:26:07 +00:00
parent 9c3faaca40
commit c7d752cdf8
8946 changed files with 1732316 additions and 0 deletions

View File

@@ -0,0 +1,241 @@
// mac/chrono.cpp --------------------------------------------------------------//
// Copyright Beman Dawes 2008
// Copyright 2009-2010 Vicente J. Botet Escriba
// Distributed under the Boost Software License, Version 1.0.
// See http://www.boost.org/LICENSE_1_0.txt
//----------------------------------------------------------------------------//
// Mac //
//----------------------------------------------------------------------------//
#include <sys/time.h> //for gettimeofday and timeval
#include <mach/mach_time.h> // mach_absolute_time, mach_timebase_info_data_t
namespace boost
{
namespace chrono
{
// system_clock
// gettimeofday is the most precise "system time" available on this platform.
// It returns the number of microseconds since New Years 1970 in a struct called timeval
// which has a field for seconds and a field for microseconds.
// Fill in the timeval and then convert that to the time_point
system_clock::time_point
system_clock::now() BOOST_CHRONO_NOEXCEPT
{
timeval tv;
gettimeofday(&tv, 0);
return time_point(seconds(tv.tv_sec) + microseconds(tv.tv_usec));
}
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
system_clock::time_point
system_clock::now(system::error_code & ec)
{
timeval tv;
gettimeofday(&tv, 0);
if (!BOOST_CHRONO_IS_THROWS(ec))
{
ec.clear();
}
return time_point(seconds(tv.tv_sec) + microseconds(tv.tv_usec));
}
#endif
// Take advantage of the fact that on this platform time_t is nothing but
// an integral count of seconds since New Years 1970 (same epoch as timeval).
// Just get the duration out of the time_point and truncate it to seconds.
time_t
system_clock::to_time_t(const time_point& t) BOOST_CHRONO_NOEXCEPT
{
return time_t(duration_cast<seconds>(t.time_since_epoch()).count());
}
// Just turn the time_t into a count of seconds and construct a time_point with it.
system_clock::time_point
system_clock::from_time_t(time_t t) BOOST_CHRONO_NOEXCEPT
{
return system_clock::time_point(seconds(t));
}
namespace chrono_detail
{
// 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.
BOOST_CHRONO_STATIC
steady_clock::rep
steady_simplified()
{
return mach_absolute_time();
}
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
BOOST_CHRONO_STATIC
steady_clock::rep
steady_simplified_ec(system::error_code & ec)
{
if (!BOOST_CHRONO_IS_THROWS(ec))
{
ec.clear();
}
return mach_absolute_time();
}
#endif
BOOST_CHRONO_STATIC
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;
}
BOOST_CHRONO_STATIC
steady_clock::rep
steady_full()
{
static kern_return_t err;
static const double factor = chrono_detail::compute_steady_factor(err);
if (err != 0)
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
}
return static_cast<steady_clock::rep>(mach_absolute_time() * factor);
}
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
BOOST_CHRONO_STATIC
steady_clock::rep
steady_full_ec(system::error_code & ec)
{
static kern_return_t err;
static const double factor = chrono_detail::compute_steady_factor(err);
if (err != 0)
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(
system::system_error(
err,
BOOST_CHRONO_SYSTEM_CATEGORY,
"chrono::steady_clock" ));
}
else
{
ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
return steady_clock::rep();
}
}
if (!BOOST_CHRONO_IS_THROWS(ec))
{
ec.clear();
}
return static_cast<steady_clock::rep>(mach_absolute_time() * factor);
}
#endif
typedef steady_clock::rep (*FP)();
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
typedef steady_clock::rep (*FP_ec)(system::error_code &);
#endif
BOOST_CHRONO_STATIC
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_detail::steady_simplified;
}
return &chrono_detail::steady_full;
}
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
BOOST_CHRONO_STATIC
FP_ec
init_steady_clock_ec(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_detail::steady_simplified_ec;
}
return &chrono_detail::steady_full_ec;
}
#endif
}
steady_clock::time_point
steady_clock::now() BOOST_CHRONO_NOEXCEPT
{
static kern_return_t err;
static chrono_detail::FP fp = chrono_detail::init_steady_clock(err);
if ( err != 0 )
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
}
return time_point(duration(fp()));
}
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
steady_clock::time_point
steady_clock::now(system::error_code & ec)
{
static kern_return_t err;
static chrono_detail::FP_ec fp = chrono_detail::init_steady_clock_ec(err);
if ( err != 0 )
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(
system::system_error(
err,
BOOST_CHRONO_SYSTEM_CATEGORY,
"chrono::steady_clock" ));
}
else
{
ec.assign( err, BOOST_CHRONO_SYSTEM_CATEGORY );
return time_point();
}
}
if (!BOOST_CHRONO_IS_THROWS(ec))
{
ec.clear();
}
return time_point(duration(fp(ec)));
}
#endif
} // namespace chrono
} // namespace boost

View File

@@ -0,0 +1,331 @@
// boost process_cpu_clocks.cpp -----------------------------------------------------------//
// Copyright Beman Dawes 1994, 2006, 2008
// Copyright Vicente J. Botet Escriba 2009
// Distributed under the Boost Software License, Version 1.0.
// See http://www.boost.org/LICENSE_1_0.txt
// See http://www.boost.org/libs/chrono for documentation.
//--------------------------------------------------------------------------------------//
#include <boost/chrono/config.hpp>
#include <boost/chrono/process_cpu_clocks.hpp>
#include <boost/assert.hpp>
#include <sys/time.h> //for gettimeofday and timeval
#include <sys/times.h> //for times
# include <unistd.h>
namespace boost
{
namespace chrono
{
namespace chrono_detail
{
inline long tick_factor() // multiplier to convert ticks
// to nanoseconds; -1 if unknown
{
static long factor = 0;
if (!factor)
{
if ((factor = ::sysconf(_SC_CLK_TCK)) <= 0)
factor = -1;
else
{
BOOST_ASSERT(factor <= 1000000000l); // doesn't handle large ticks
factor = 1000000000l / factor; // compute factor
if (!factor)
factor = -1;
}
}
return factor;
}
}
process_real_cpu_clock::time_point process_real_cpu_clock::now() BOOST_CHRONO_NOEXCEPT
{
#if 0
tms tm;
clock_t c = ::times(&tm);
if (c == clock_t(-1)) // error
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
} else
{
long factor = chrono_detail::tick_factor();
if (factor != -1)
{
return time_point(nanoseconds(c * factor));
} else
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
}
}
return time_point();
#else
clock_t c = ::clock();
if (c == clock_t(-1)) // error
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
}
return time_point(
duration(c*(1000000000l/CLOCKS_PER_SEC))
);
#endif
}
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
process_real_cpu_clock::time_point process_real_cpu_clock::now(system::error_code & ec)
{
#if 0
tms tm;
clock_t c = ::times(&tm);
if (c == clock_t(-1)) // error
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_real_cpu_clock"));
} else
{
ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY);
return time_point();
}
} else
{
long factor = chrono_detail::tick_factor();
if (factor != -1)
{
if (!BOOST_CHRONO_IS_THROWS(ec))
{
ec.clear();
}
return time_point(nanoseconds(c * factor));
} else
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_real_cpu_clock"));
} else
{
ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY);
return time_point();
}
}
}
#else
clock_t c = ::clock();
if (c == clock_t(-1)) // error
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_real_cpu_clock"));
} else
{
ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY);
return time_point();
}
}
return time_point(
duration(c*(1000000000l/CLOCKS_PER_SEC))
);
#endif
}
#endif
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
process_user_cpu_clock::time_point process_user_cpu_clock::now(system::error_code & ec)
{
tms tm;
clock_t c = ::times(&tm);
if (c == clock_t(-1)) // error
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_user_cpu_clock"));
} else
{
ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY);
return time_point();
}
} else
{
long factor = chrono_detail::tick_factor();
if (factor != -1)
{
if (!BOOST_CHRONO_IS_THROWS(ec))
{
ec.clear();
}
return time_point(nanoseconds((tm.tms_utime + tm.tms_cutime) * factor));
} else
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_user_cpu_clock"));
} else
{
ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY);
return time_point();
}
}
}
}
#endif
process_user_cpu_clock::time_point process_user_cpu_clock::now() BOOST_CHRONO_NOEXCEPT
{
tms tm;
clock_t c = ::times(&tm);
if (c == clock_t(-1)) // error
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
} else
{
long factor = chrono_detail::tick_factor();
if (factor != -1)
{
return time_point(nanoseconds((tm.tms_utime + tm.tms_cutime)
* factor));
} else
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
}
}
return time_point();
}
process_system_cpu_clock::time_point process_system_cpu_clock::now() BOOST_CHRONO_NOEXCEPT
{
tms tm;
clock_t c = ::times(&tm);
if (c == clock_t(-1)) // error
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
} else
{
long factor = chrono_detail::tick_factor();
if (factor != -1)
{
return time_point(nanoseconds((tm.tms_stime + tm.tms_cstime)
* factor));
} else
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
}
}
return time_point();
}
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
process_system_cpu_clock::time_point process_system_cpu_clock::now(system::error_code & ec)
{
tms tm;
clock_t c = ::times(&tm);
if (c == clock_t(-1)) // error
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_system_cpu_clock"));
} else
{
ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY);
return time_point();
}
} else
{
long factor = chrono_detail::tick_factor();
if (factor != -1)
{
if (!BOOST_CHRONO_IS_THROWS(ec))
{
ec.clear();
}
return time_point(nanoseconds((tm.tms_stime + tm.tms_cstime) * factor));
} else
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_system_cpu_clock"));
} else
{
ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY);
return time_point();
}
}
}
}
#endif
process_cpu_clock::time_point process_cpu_clock::now() BOOST_CHRONO_NOEXCEPT
{
tms tm;
clock_t c = ::times(&tm);
if (c == clock_t(-1)) // error
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
} else
{
long factor = chrono_detail::tick_factor();
if (factor != -1)
{
time_point::rep
r(c * factor, (tm.tms_utime + tm.tms_cutime) * factor, (tm.tms_stime
+ tm.tms_cstime) * factor);
return time_point(duration(r));
} else
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
}
}
return time_point();
}
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
process_cpu_clock::time_point process_cpu_clock::now(system::error_code & ec)
{
tms tm;
clock_t c = ::times(&tm);
if (c == clock_t(-1)) // error
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_clock"));
} else
{
ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY);
return time_point();
}
} else
{
long factor = chrono_detail::tick_factor();
if (factor != -1)
{
time_point::rep
r(c * factor, (tm.tms_utime + tm.tms_cutime) * factor, (tm.tms_stime
+ tm.tms_cstime) * factor);
return time_point(duration(r));
} else
{
if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_clock"));
} else
{
ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY);
return time_point();
}
}
}
}
#endif
}
}

View File

@@ -0,0 +1,15 @@
// boost thread_clock.cpp -----------------------------------------------------------//
// Copyright Vicente J. Botet Escriba 2010
// Distributed under the Boost Software License, Version 1.0.
// See http://www.boost.org/LICENSE_1_0.txt
// See http://www.boost.org/libs/chrono for documentation.
//--------------------------------------------------------------------------------------//
#include <boost/chrono/config.hpp>
#include <boost/chrono/detail/inlined/posix/thread_clock.hpp>
#include <cassert>