versions of the thread lock functions to determine at runtime if a lock
is needed) to OMPI_ENABLE_PROGRESS_THREADS instead of
OMPI_HAVE_THREAD_SUPPORT. Opal only starts a thread when
OMPI_ENABLE_PROGRESS_THREADS is enabled, and ORTE never really starts
a thread that requires special locking considerations.
MPI_INIT would set opal_uses_threads to true if thread level was
greater than MPI_THREAD_SINGLE, but it would never decreast the
value of opal_uses_threads, meaning that we always enabled all that
locking if we did a threaded build, which isn't neccessary. Now
we do locking iff progress threads are enabled OR thread level
is above MPI_THREAD_SINGLE.
This commit was SVN r11390.
b56c8c3a66