From 3f0822a35efc2fd61bcc4040bea13519f389b655 Mon Sep 17 00:00:00 2001 From: Vratko Polak Date: Tue, 28 Jul 2020 16:38:55 +0200 Subject: [PATCH] Soak: Avoid a possible deadlock. Change-Id: I31c2d7744b5cd3021132fb188480b8edec74986c Signed-off-by: Vratko Polak --- resources/libraries/python/PLRsearch/PLRsearch.py | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/resources/libraries/python/PLRsearch/PLRsearch.py b/resources/libraries/python/PLRsearch/PLRsearch.py index fb4ee1a4d0..ec58fbd10f 100644 --- a/resources/libraries/python/PLRsearch/PLRsearch.py +++ b/resources/libraries/python/PLRsearch/PLRsearch.py @@ -601,15 +601,17 @@ class PLRsearch: dilled_function = dill.dumps(value_logweight_func) boss_pipe_end, worker_pipe_end = multiprocessing.Pipe() - boss_pipe_end.send( - (dimension, dilled_function, focus_tracker, max_samples) - ) + # Do not send yet, run the worker first to avoid a deadlock. + # See https://stackoverflow.com/a/15716500 worker = multiprocessing.Process( target=Integrator.try_estimate_nd, args=(worker_pipe_end, 10.0, self.trace_enabled) ) worker.daemon = True worker.start() + boss_pipe_end.send( + (dimension, dilled_function, focus_tracker, max_samples) + ) return boss_pipe_end erf_pipe = start_computing(self.lfit_erf, erf_focus_tracker) -- 2.16.6