This is an automated email from the ASF dual-hosted git repository. not-in-ldap pushed a commit to branch aevri/check_spawn_ci_working in repository https://gitbox.apache.org/repos/asf/buildstream.git
commit 303cf5a602ffd7612d418f71a833d045ab273374 Author: Angelos Evripiotis <[email protected]> AuthorDate: Wed Oct 16 14:43:38 2019 +0100 WIP: warn on already set start method --- src/buildstream/_frontend/cli.py | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/src/buildstream/_frontend/cli.py b/src/buildstream/_frontend/cli.py index 05c0bd2..cd31c5b 100644 --- a/src/buildstream/_frontend/cli.py +++ b/src/buildstream/_frontend/cli.py @@ -233,24 +233,33 @@ def override_main(self, args=None, prog_name=None, complete_var=None, # ensure the code path is only followed once. if 'BST_FORCE_START_METHOD' in os.environ: start_method = os.environ['BST_FORCE_START_METHOD'] - if multiprocessing.get_start_method(allow_none=True) == start_method: + existing_start_method = multiprocessing.get_start_method(allow_none=True) + if existing_start_method == None: + multiprocessing.set_start_method(start_method) + print( + "BST_FORCE_START_METHOD: multiprocessing start method forced to:", + start_method, + file=sys.stderr, + flush=True, + ) + elif existing_start_method == start_method: # Note that when testing, we run the buildstream entrypoint # multiple times in the same executable, so guard against that # here. print( "BST_FORCE_START_METHOD: multiprocessing start method already set to:", - start_method, + existing_start_method, file=sys.stderr, flush=True, ) else: - multiprocessing.set_start_method(start_method) print( - "BST_FORCE_START_METHOD: multiprocessing start method forced to:", - start_method, + "BST_FORCE_START_METHOD: cannot set multiprocessing start method, already set to:", + existing_start_method, file=sys.stderr, flush=True, ) + sys.exit(-1) original_main(self, args=args, prog_name=prog_name, complete_var=None, standalone_mode=standalone_mode, **extra)
