What can be done to add the pthread_mutex_timedlock function to the pthread implementation of cygwin ? And what does the PTC achronyme mean ? :)
Dave Korn-6 wrote: > > Dave Korn wrote: >> Casull wrote: >>> The GCC 4.4 implementation of std::thread is guarded by the >>> following preprocessing directive: >>> >>> #if defined(_GLIBCXX_HAS_GTHREADS) && >>> defined(_GLIBCXX_USE_C99_STDINT_TR1) >>> >>> When looking at the bits/c++config.h, _GLIBCXX_USE_C99_STDINT_TR1 is >>> defined >>> but _GLIBCXX_HAS_GTHREADS isn't. >> >> Ah. There is an autoconf test in libstdc++-v3 that defines that, and >> the >> comment says: >> >>> dnl Check if gthread implementation defines the types and functions >>> dnl required by the c++0x thread library. Conforming gthread >>> dnl implementations can define __GTHREADS_CXX0X to enable use with >>> c++0x. > > It fails because : > > // In case of POSIX threads check _POSIX_TIMEOUTS too. > #if (defined(_PTHREADS) && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS > <= 0)) > #error > #endif > > > ... we don't have any definition of _POSIX_TIMEOUTS. That's a feature > test > macro the exact definition of which I haven't found yet, but from > libstdc's > point of view, it appears to mean that the pthread_mutex_timedlock > function is > supported. Which indeed Cygwin doesn't currently implement. > > http://www.opengroup.org/onlinepubs/009695399/functions/pthread_mutex_timedlock.html > > Looks like it wouldn't be too hard to add, PTC I suppose. > > cheers, > DaveK > > > -- > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > Problem reports: http://cygwin.com/problems.html > Documentation: http://cygwin.com/docs.html > FAQ: http://cygwin.com/faq/ > > > -- View this message in context: http://www.nabble.com/GCC-4.4.0---Can%27t-activate-threading-support-tp23292063p23295820.html Sent from the Cygwin list mailing list archive at Nabble.com. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
