Hi,
Having different libgcc copies used from different parts of your program
may be a big problem or not, depending upon how it is used in your program.
Different libgccs do not share data, so C++ exceptions will not work
between different libgccs. Your C program may not care for exceptions but
dy
My 2c, which is not authoritative but perhaps can throw a few more
topics into the mix.
First remember this: there are compiler-specific versions of
libstdc++, incompatible but nevertheless named the same, dependent
upon the exception method deployed by the compiler.
AFAIK the only way to force a
On 30/03/2015 22:03, Adrien Nader wrote:
>> Hi, on the page: http://mingw-w64.yaxm.org/doku.php/documentation
>> the link to "libmangle" is broken. Clicking on it takes me here:
>> http://mingw-w64.yaxm.orglibmangle/
> Thanks for the notice. This was due to an overly simple rewrite rule.
> Libmangl
On Wed, Apr 1, 2015 at 4:33 PM, Martin Mitáš wrote:
>
>
> Dne 1. 4. 2015 v 10:13 Mattias Engdegård napsal(a):
> > 1 apr 2015 kl. 05.35 skrev Dongsheng Song :
> >
> >> In my testing, getenv() is very fast.
> >>
> >> *) unset PRINTF_EXPONENT_DIGITS
> >>
> >> preheat 1 times, then perform 10
Dne 1. 4. 2015 v 10:13 Mattias Engdegård napsal(a):
> 1 apr 2015 kl. 05.35 skrev Dongsheng Song :
>
>> In my testing, getenv() is very fast.
>>
>> *) unset PRINTF_EXPONENT_DIGITS
>>
>> preheat 1 times, then perform 100 times (use 4.6 seconds)
>> getenv cost: 4.6 us
>>
>> *) set P
1 apr 2015 kl. 05.35 skrev Dongsheng Song :
> In my testing, getenv() is very fast.
>
> *) unset PRINTF_EXPONENT_DIGITS
>
> preheat 1 times, then perform 100 times (use 4.6 seconds)
> getenv cost: 4.6 us
>
> *) set PRINTF_EXPONENT_DIGITS=3
> preheat 1 times, then perform 100
> patch is ok. I am still a bit curious to learn about that high delay
> caused by getenv ().
It was a while since I dissected it, but I believe getenv takes a lock. This
hurts multithreaded programs in particular. Even without a lock, getenv still
needs to do a linear string search through the
Hi Adrien,
yes, I think we should separate between pure toolchain and
environment. Eg msys2, cygwin etc. are first hand environments, but
of course each of them provides at least one toolchain package. So if
we want to provide lists of additional packages available for a
specific environment, we
Hi Mattias,
patch is ok. I am still a bit curious to learn about that high delay
caused by getenv ().
Kai
2015-04-01 5:35 GMT+02:00 Dongsheng Song :
> Hi Mattias,
>
> Could you share your micro benchmark data ?
>
> In my testing, getenv() is very fast.
>
> *) unset PRINTF_EXPONENT_DIGITS
>
> pr
(catching up with my mails LIFO-style, the best way to cause huge
delays)
On Wed, Mar 25, 2015, Ruben Van Boxem wrote:
> 2015-03-24 21:20 GMT+01:00 Adrien Nader :
>
> > Hi,
> >
> > On Tue, Mar 24, 2015, David Macek wrote:
> > > On 20. 3. 2015 22:51, Adrien Nader wrote:
> > > > Hi,
> > > >
> > > >
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