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Code Issues Releases Wiki Activity

framework: Lock files which could be read/written to concurrently

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Add file locking to files that could be read and written to concurrently
by separate wa processes causing race conditions.
This commit is contained in:
Marc Bonnici
2020-01-03 11:16:48 +00:00
committed by setrofim
parent d56f0fbe20
commit 607cff4c54
5 changed files with 65 additions and 50 deletions
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7
wa/framework/target/info.py
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@@ -23,6 +23,7 @@ from devlib.utils.android import AndroidProperties
from wa.framework.configuration.core import settings
from wa.framework.exception import ConfigError
from wa.utils.serializer import read_pod, write_pod, Podable
from wa.utils.misc import lock_file
def cpuinfo_from_pod(pod):
@@ -280,13 +281,15 @@ def read_target_info_cache():
os.makedirs(settings.cache_directory)
if not os.path.isfile(settings.target_info_cache_file):
return {}
return read_pod(settings.target_info_cache_file)
with lock_file(settings.target_info_cache_file):
return read_pod(settings.target_info_cache_file)
def write_target_info_cache(cache):
if not os.path.exists(settings.cache_directory):
os.makedirs(settings.cache_directory)
write_pod(cache, settings.target_info_cache_file)
with lock_file(settings.target_info_cache_file):
write_pod(cache, settings.target_info_cache_file)
def get_target_info_from_cache(system_id):