f8190b5705
* thread.cc (pthread_rwlock::rdlock): If a thread already owns a read lock, just count the number of locks for it, per SUSv4. (pthread_rwlock::tryrdlock): Ditto. (pthread_rwlock::unlock): If a thread has more than one concurrent read locks, just count down.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cygwin documentation is available on the net at http://cygwin.com You might especially be interested in http://cygwin.com/faq/faq.programming.html#faq.programming.building-cygwin