Re: [Boost-bugs] [Boost C++ Libraries] #9342: Regression on process_cpu_clock::timepoint io on V2

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #9342: Regression on process_cpu_clock::timepoint io on V2
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-01-19 07:31:45

#9342: Regression on process_cpu_clock::timepoint io on V2
-------------------------------+----------------------
  Reporter:  viboes            |      Owner:  viboes
      Type:  Bugs              |     Status:  assigned
 Milestone:  To Be Determined  |  Component:  chrono
   Version:  Boost 1.54.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+----------------------
Description changed by viboes:

Old description:

> The following example
> #include <boost/chrono/chrono_io.hpp>
>
> {{{
> #define BOOST_CHRONO_PROVIDES_DEPRECATED_IO_SINCE_V2_0_0
>
> int main() {
>   std::cout<< boost::chrono::process_cpu_clock::now() << std::endl;
> }
> }}}
>
> outputs
>
> {{{
> {1383629724660000000;0;0} nanoseconds since process start-up
> }}}
>
> while if BOOST_CHRONO_PROVIDES_DEPRECATED_IO_SINCE_V2_0_0 is not defined,
> it outputs
>
> {{{
> 1383629672240000000 nanoseconds since process start-up
> }}}
>
> A process_cpu_clock::duration::rep is a tuple like of 3 clocks real, user
> and system.
>
> The same problem for input. V1 manages a format {{{ {v1,v2;v3} }}}  and
> is able to restore the 3 clocks, but V2 takes only the real clock in
> account.

New description:

 The following example


 {{{
 #define BOOST_CHRONO_PROVIDES_DEPRECATED_IO_SINCE_V2_0_0
 #include <boost/chrono/chrono_io.hpp>

 int main() {
   std::cout<< boost::chrono::process_cpu_clock::now() << std::endl;
 }
 }}}

 outputs

 {{{
 {1383629724660000000;0;0} nanoseconds since process start-up
 }}}

 while if BOOST_CHRONO_PROVIDES_DEPRECATED_IO_SINCE_V2_0_0 is not defined,
 it outputs

 {{{
 1383629672240000000 nanoseconds since process start-up
 }}}

 A process_cpu_clock::duration::rep is a tuple like of 3 clocks real, user
 and system.

 The same problem for input. V1 manages a format {{{ {v1,v2;v3} }}}  and is
 able to restore the 3 clocks, but V2 takes only the real clock in account.

--
-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9342#comment:2>
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