OpenLDAP 2.0 beta on NT

[Roger Willcocks <Roger.Willcocks@loot.com>]

2.0 beta builds and compiles cleanly on NT (without sasl), but goes to 100%
cpu utilization after the first query, due to a tight loop in
ldap_int_thread_pool_wrapper. This is because of bugs in the pthread
emulation (thr_nt.c) - in ldap_pvt_thread_cond_wait the SignalObjectAndWait
call fails with an unchecked error of 'attempt to release mutex not owned by
caller' so no wait occurs.

The best solution I believe is to replace the existing pthread emulation
with pthreads-win32 (http://sources.redhat.com/pthreads-win32/) a high
quality open source emulation. Set 'HAVE_PTHREAD' and 'HAVE_PTHREADS_FINAL'
and use thr_posix.c rather than thr_nt.c (which can be removed.)

--
Roger





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