extract_from_cab script now takes a global lock while extracting from the CAB file.

extract_from_cab script now takes a global lock while extracting from the CAB file.

I suspect the Microsoft expand tool does not work reliably if invoked concurrently. Since a recent change to extract the xinput DLL using the same script, but for a different target than the D3D DLLs, it is possible that expand_from_cab.py can be invoked concurrently.

BUG=107291
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=114132

[apatrick_chromium, 2011-12-12 23:48:13]

+vangelis in case maruel isn't around.

[vangelis, 2011-12-13 00:28:38]

This looks fine to me in the interest of trying it out. If it does work, you'll
probably need to clean up the second attempt and rely on the lock to make sure
the extraction works correctly.

LGTM

[M-A Ruel, 2011-12-13 01:34:22]

http://codereview.chromium.org/8921029/diff/3/build/extract_from_cab.py
File build/extract_from_cab.py (right):

http://codereview.chromium.org/8921029/diff/3/build/extract_from_cab.py#newco...
build/extract_from_cab.py:23: time.sleep(1000)
time.sleep(10)

http://codereview.chromium.org/8921029/diff/3/build/extract_from_cab.py#newco...
build/extract_from_cab.py:28: 
please keep 2 vertical lines between file level symbols

http://codereview.chromium.org/8921029/diff/3/build/extract_from_cab.py#newco...
build/extract_from_cab.py:44: print 'Trying a second time.'
Remove the retry with the locking you add?