Ok. So I now I ran more tests. To start with, I replaced the unnamed
process-shared semaphore for a more compatible named semaphore, which by
definition is process-shared. The code works fine in Linux and FreeBSD. But
in MinGW-w64, no such luck.
I tried the toolchain in *mingw-w64-v3.0.0.tar.bz2,
<https://sourceforge.net/projects/mingw-w64/files/latest/download?source=files>*
and the one in x86_64-4.8.2-release-posix-seh-rt_v3-rev0.7z and the one in
x86_64-4.8.2-release-win32-seh-rt_v3-rev0.7z, all with the same results on
the following code:
sem_t *sem = sem_open(sem_name, O_CREAT|O_EXCL, 0700, 0);
if (sem == SEM_FAILED) {
fprintf(stderr, "***Cannot create named semaphore: %s(%s)\n",
sem_name, strerror(errno));
return 0;
}
Which produces:
***Cannot create named semaphore: \Tubo-1300-1-stdout (Function not
implemented)
So my guess is that unnamed semaphores are not implemented either, because
when I try to use them, I invariably get a crash (instead of the graceful
exit shown above).
Next step would be to resort to CreateSemaphore from the winAPI and see if
I can wrap it around the missing implementation.
I'll let you all know how that fares...
BTW, in the old MinGW(.org) toolchain, the program will simply not compile
(error: 'SEM_FAILED' undeclared).
2013/11/6 Ruben Van Boxem <vanboxem.ru...@gmail.com>
> 2013/11/6 niXman <i.nix...@autistici.org>
>
>> Ruben Van Boxem писал 2013-11-05 23:57:
>>
>> > You can get MinGW-w64 from here:
>> >
>> http://sourceforge.net/projects/mingwbuilds/files/mingw-builds-install/mingw-builds-install.exe
>> >
>> > Or seperate downloads via here:
>> > http://mingw-w64.sourceforge.net/download.php#mingw-builds
>>
>> Previously I reported about that the MinGW-builds project will no longer
>> be updated, as we have joined MinGW-W64 project.
>>
>
> My bad, I thought I copied them from the right place. Guess I didn't look
> well enough :-/
>
> Ruben
>
>
>> You can get builds here:
>> i686:
>>
>> https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/
>> x86_64<https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/x86_64>
>> :
>>
>> https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/Personal%20Builds/mingw-builds/
>>
>>
>> --
>> Regards, niXman
>> ___________________________________________________
>> Dual-target(32 & 64-bit) MinGW-W64 compilers for 32 and 64-bit Windows:
>> http://sourceforge.net/projects/mingw-w64/
>> ___________________________________________________
>> Another online IDE: http://liveworkspace.org/
>>
>>
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Applied Mathematics and Computing
Mexican Petroleum Institute
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