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  • Committer: Martin
  • Date: 2011-05-27 01:42:37 UTC
  • mto: (5425.4.19 220464-stale-locks)
  • mto: This revision was merged to the branch mainline in revision 5970.
  • Revision ID: gzlist@googlemail.com-20110527014237-kp0j9qua5m9fkot2
Split pid deadness detection code out into osutils

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Lines of Context:
bzrlib/osutils.py
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            if os.access(f, os.X_OK):
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                return f
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    return None
 
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def _posix_is_local_pid_dead(pid):
 
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    """True if a process with given pid is running on this machine"""
 
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    try:
 
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        # Special meaning of unix kill: just check if it's there.
 
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        os.kill(pid, 0)
 
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    except OSError, e:
 
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        if e.errno == errno.ESRCH:
 
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            # On this machine, and really not found: as sure as we can be
 
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            # that it's dead.
 
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            return True
 
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        elif e.errno == errno.EPERM:
 
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            # exists, though not ours
 
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            return False
 
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        else:
 
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            raise
 
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    else:
 
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        # Exists and our process: not dead.
 
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        return False
 
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