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issue #549: fix setrlimit() crash and hard-wire OS X default 

OS X advertised unlimited, but really it means kern.maxfilesperproc.
This commit is contained in:
David Wilson 2019-08-02 22:30:58 +01:00
parent c9d890b865
commit 395b03a77d
1 changed files with 16 additions and 5 deletions
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21
ansible_mitogen/process.py
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@ -246,11 +246,22 @@ def increase_open_file_limit():
limit is much higher. limit is much higher.
""" """
soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE) soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
if soft < hard: LOG.debug('inherited open file limits: soft=%d hard=%d', soft, hard)
LOG.debug('raising soft open file limit from %d to %d', soft, hard) if soft >= hard:
resource.setrlimit(resource.RLIMIT_NOFILE, (hard, hard)) LOG.debug('max open files already set to hard limit: %d', hard)
else: return
LOG.debug('cannot increase open file limit; existing limit is %d', hard)
# OS X is limited by kern.maxfilesperproc sysctl, rather than the
# advertised unlimited hard RLIMIT_NOFILE. Just hard-wire known defaults
# for that sysctl, to avoid the mess of querying it.
for value in (hard, 10240):
try:
resource.setrlimit(resource.RLIMIT_NOFILE, (value, hard))
LOG.debug('raised soft open file limit from %d to %d', soft, value)
break
except ValueError as e:
LOG.debug('could not raise soft open file limit from %d to %d: %s',
soft, value, e)
def common_setup(enable_affinity=True, _init_logging=True): def common_setup(enable_affinity=True, _init_logging=True):