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Viewing changes to bzrlib/win32utils.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2011-06-14 08:08:36 UTC
  • mfrom: (5425.4.30 220464-stale-locks)
  • Revision ID: pqm@pqm.ubuntu.com-20110614080836-d06kod1br6j1rx6j
(mbp) optionally detect and steal dead locks from the same machine and user
 (bug 220464) (Martin Pool)

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Lines of Context:
bzrlib/win32utils.py
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        return argv
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else:
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    get_unicode_argv = None
 
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if has_win32api:
 
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    def _pywin32_is_local_pid_dead(pid):
 
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        """True if pid doesn't correspond to live process on this machine"""
 
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        try:
 
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            handle = win32api.OpenProcess(1, False, pid) # PROCESS_TERMINATE
 
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        except pywintypes.error, e:
 
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            if e[0] == 5: # ERROR_ACCESS_DENIED
 
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                # Probably something alive we're not allowed to kill
 
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                return False
 
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            elif e[0] == 87: # ERROR_INVALID_PARAMETER
 
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                return True
 
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            raise
 
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        handle.close()
 
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        return False
 
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    is_local_pid_dead = _pywin32_is_local_pid_dead
 
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elif has_ctypes and sys.platform == 'win32':
 
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    from ctypes.wintypes import BOOL, DWORD, HANDLE
 
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    _kernel32 = ctypes.windll.kernel32
 
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    _CloseHandle = ctypes.WINFUNCTYPE(BOOL, HANDLE)(
 
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        ("CloseHandle", _kernel32))
 
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    _OpenProcess = ctypes.WINFUNCTYPE(HANDLE, DWORD, BOOL, DWORD)(
 
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        ("OpenProcess", _kernel32))
 
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    def _ctypes_is_local_pid_dead(pid):
 
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        """True if pid doesn't correspond to live process on this machine"""
 
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        handle = _OpenProcess(1, False, pid) # PROCESS_TERMINATE
 
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        if not handle:
 
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            errorcode = ctypes.GetLastError()
 
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            if errorcode == 5: # ERROR_ACCESS_DENIED
 
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                # Probably something alive we're not allowed to kill
 
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                return False
 
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            elif errorcode == 87: # ERROR_INVALID_PARAMETER
 
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                return True
 
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            raise ctypes.WinError(errorcode)
 
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        _CloseHandle(handle)
 
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        return False
 
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    is_local_pid_dead = _ctypes_is_local_pid_dead