Subject: [Boost-commit] svn:boost r74549 - trunk/boost/chrono/detail/inlined/win
From: vicente.botet_at_[hidden]
Date: 2011-09-24 12:00:17
Author: viboes
Date: 2011-09-24 12:00:17 EDT (Sat, 24 Sep 2011)
New Revision: 74549
URL: http://svn.boost.org/trac/boost/changeset/74549
Log:
Chrono: Use clock() instead of steady_clock to represent wall process clock on windows
Text files modified:
trunk/boost/chrono/detail/inlined/win/process_cpu_clocks.hpp | 146 +++++++++++++--------------------------
1 files changed, 49 insertions(+), 97 deletions(-)
Modified: trunk/boost/chrono/detail/inlined/win/process_cpu_clocks.hpp
==============================================================================
--- trunk/boost/chrono/detail/inlined/win/process_cpu_clocks.hpp (original)
+++ trunk/boost/chrono/detail/inlined/win/process_cpu_clocks.hpp 2011-09-24 12:00:17 EDT (Sat, 24 Sep 2011)
@@ -16,6 +16,7 @@
//#include <boost/chrono/system_clocks.hpp>
#include <boost/chrono/process_cpu_clocks.hpp>
#include <cassert>
+#include <time.h>
#include <boost/detail/win/GetLastError.hpp>
#include <boost/detail/win/GetCurrentProcess.hpp>
@@ -28,70 +29,35 @@
process_real_cpu_clock::time_point process_real_cpu_clock::now() BOOST_CHRONO_NOEXCEPT
{
-
- // note that Windows uses 100 nanosecond ticks for FILETIME
- boost::detail::win32::FILETIME_ creation, exit, user_time, system_time;
-
- if ( boost::detail::win32::GetProcessTimes(
- boost::detail::win32::GetCurrentProcess(), &creation, &exit,
- &system_time, &user_time ) )
- {
- return time_point(duration(
- ((static_cast<process_user_cpu_clock::rep>(user_time.dwHighDateTime) << 32)
- | user_time.dwLowDateTime) * 100
- +
- ((static_cast<process_system_cpu_clock::rep>(system_time.dwHighDateTime) << 32)
- | system_time.dwLowDateTime) * 100
- ));
- }
- else
+ clock_t c = ::clock();
+ if ( c == clock_t(-1) ) // error
{
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
}
- return time_point();
+ return time_point(
+ duration(c*(1000000000l/CLOCKS_PER_SEC))
+ );
}
process_real_cpu_clock::time_point process_real_cpu_clock::now(
- system::error_code & ec)
+ system::error_code & ec)
{
-
- // note that Windows uses 100 nanosecond ticks for FILETIME
- boost::detail::win32::FILETIME_ creation, exit, user_time, system_time;
-
- if ( boost::detail::win32::GetProcessTimes(
- boost::detail::win32::GetCurrentProcess(), &creation, &exit,
- &system_time, &user_time ) )
- {
- if (!BOOST_CHRONO_IS_THROWS(ec))
- {
- ec.clear();
- }
- return time_point(duration(
- ((static_cast<process_user_cpu_clock::rep>(user_time.dwHighDateTime) << 32)
- | user_time.dwLowDateTime) * 100
- +
- ((static_cast<process_system_cpu_clock::rep>(system_time.dwHighDateTime) << 32)
- | system_time.dwLowDateTime) * 100
- ));
- }
- else
+ clock_t c = ::clock();
+ if ( c == clock_t(-1) ) // error
{
- boost::detail::win32::DWORD_ cause = boost::detail::win32::GetLastError();
- if (BOOST_CHRONO_IS_THROWS(ec))
- {
boost::throw_exception(
- system::system_error(
- cause,
- BOOST_CHRONO_SYSTEM_CATEGORY,
+ system::system_error(
+ errno,
+ BOOST_CHRONO_SYSTEM_CATEGORY,
"chrono::process_real_cpu_clock" ));
- }
- else
- {
- ec.assign( cause, BOOST_CHRONO_SYSTEM_CATEGORY );
- return time_point();
- }
}
-
+ if (!BOOST_CHRONO_IS_THROWS(ec))
+ {
+ ec.clear();
+ }
+ return time_point(
+ duration(c*(1000000000l/CLOCKS_PER_SEC))
+ );
}
process_user_cpu_clock::time_point process_user_cpu_clock::now() BOOST_CHRONO_NOEXCEPT
@@ -118,7 +84,7 @@
}
process_user_cpu_clock::time_point process_user_cpu_clock::now(
- system::error_code & ec)
+ system::error_code & ec)
{
// note that Windows uses 100 nanosecond ticks for FILETIME
@@ -128,7 +94,7 @@
boost::detail::win32::GetCurrentProcess(), &creation, &exit,
&system_time, &user_time ) )
{
- if (!BOOST_CHRONO_IS_THROWS(ec))
+ if (!BOOST_CHRONO_IS_THROWS(ec))
{
ec.clear();
}
@@ -140,15 +106,15 @@
else
{
boost::detail::win32::DWORD_ cause = boost::detail::win32::GetLastError();
- if (BOOST_CHRONO_IS_THROWS(ec))
+ if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(
- system::system_error(
- cause,
- BOOST_CHRONO_SYSTEM_CATEGORY,
+ system::system_error(
+ cause,
+ BOOST_CHRONO_SYSTEM_CATEGORY,
"chrono::process_user_cpu_clock" ));
- }
- else
+ }
+ else
{
ec.assign( cause, BOOST_CHRONO_SYSTEM_CATEGORY );
return time_point();
@@ -181,7 +147,7 @@
}
process_system_cpu_clock::time_point process_system_cpu_clock::now(
- system::error_code & ec)
+ system::error_code & ec)
{
// note that Windows uses 100 nanosecond ticks for FILETIME
@@ -191,7 +157,7 @@
boost::detail::win32::GetCurrentProcess(), &creation, &exit,
&system_time, &user_time ) )
{
- if (!BOOST_CHRONO_IS_THROWS(ec))
+ if (!BOOST_CHRONO_IS_THROWS(ec))
{
ec.clear();
}
@@ -203,21 +169,21 @@
else
{
boost::detail::win32::DWORD_ cause = boost::detail::win32::GetLastError();
- if (BOOST_CHRONO_IS_THROWS(ec))
+ if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(
- system::system_error(
- cause,
- BOOST_CHRONO_SYSTEM_CATEGORY,
+ system::system_error(
+ cause,
+ BOOST_CHRONO_SYSTEM_CATEGORY,
"chrono::process_system_cpu_clock" ));
- }
- else
+ }
+ else
{
ec.assign( cause, BOOST_CHRONO_SYSTEM_CATEGORY );
return time_point();
}
}
-
+
}
process_cpu_clock::time_point process_cpu_clock::now() BOOST_CHRONO_NOEXCEPT
{
@@ -229,14 +195,7 @@
boost::detail::win32::GetCurrentProcess(), &creation, &exit,
&system_time, &user_time ) )
{
- time_point::rep r(
- ((static_cast<process_user_cpu_clock::rep>(user_time.dwHighDateTime) << 32)
- | user_time.dwLowDateTime
- ) * 100
- +
- ((static_cast<process_system_cpu_clock::rep>(system_time.dwHighDateTime) << 32)
- | system_time.dwLowDateTime
- ) * 100
+ time_point::rep r(process_real_cpu_clock::now().time_since_epoch().count()
,
((static_cast<process_user_cpu_clock::rep>(user_time.dwHighDateTime) << 32)
| user_time.dwLowDateTime
@@ -255,8 +214,8 @@
}
-process_cpu_clock::time_point process_cpu_clock::now(
- system::error_code & ec )
+process_cpu_clock::time_point process_cpu_clock::now(
+ system::error_code & ec )
{
// note that Windows uses 100 nanosecond ticks for FILETIME
@@ -266,40 +225,33 @@
boost::detail::win32::GetCurrentProcess(), &creation, &exit,
&system_time, &user_time ) )
{
- if (!BOOST_CHRONO_IS_THROWS(ec))
+ if (!BOOST_CHRONO_IS_THROWS(ec))
{
ec.clear();
}
- time_point::rep r(
- ((static_cast<process_user_cpu_clock::rep>(user_time.dwHighDateTime) << 32)
- | user_time.dwLowDateTime
- ) * 100
- +
- ((static_cast<process_system_cpu_clock::rep>(system_time.dwHighDateTime) << 32)
- | system_time.dwLowDateTime
- ) * 100
+ time_point::rep r(process_real_cpu_clock::now().time_since_epoch().count()
,
((static_cast<process_user_cpu_clock::rep>(user_time.dwHighDateTime) << 32)
| user_time.dwLowDateTime
- ) * 100,
+ ) * 100,
((static_cast<process_system_cpu_clock::rep>(system_time.dwHighDateTime) << 32)
| system_time.dwLowDateTime
- ) * 100
+ ) * 100
);
return time_point(duration(r));
}
else
{
boost::detail::win32::DWORD_ cause = boost::detail::win32::GetLastError();
- if (BOOST_CHRONO_IS_THROWS(ec))
+ if (BOOST_CHRONO_IS_THROWS(ec))
{
boost::throw_exception(
- system::system_error(
- cause,
- BOOST_CHRONO_SYSTEM_CATEGORY,
+ system::system_error(
+ cause,
+ BOOST_CHRONO_SYSTEM_CATEGORY,
"chrono::process_cpu_clock" ));
- }
- else
+ }
+ else
{
ec.assign( cause, BOOST_CHRONO_SYSTEM_CATEGORY );
return time_point();