05df698d2b
Summary:
"import crashinfo" was probably failing because multiple dotest invocations
are all trying to compile crashinfo.so at the same time.
I've put a mutex around the compile step to prevent this.
Reviewers: clayborg, chying
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D9732
llvm-svn: 237230
24 lines
512 B
Python
24 lines
512 B
Python
"""
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Interprocess mutex based on file locks
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"""
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import fcntl
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import os
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class Lock:
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def __init__(self, filename):
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self.filename = filename
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# This will create it if it does not exist already
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self.handle = open(filename, 'w')
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# Bitwise OR fcntl.LOCK_NB if you need a non-blocking lock
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def acquire(self):
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fcntl.flock(self.handle, fcntl.LOCK_EX)
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def release(self):
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fcntl.flock(self.handle, fcntl.LOCK_UN)
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def __del__(self):
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self.handle.close()
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