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added more comments on dir_init.rb git-svn-id: http://theory.cpe.ku.ac.th/grader/web/trunk@383 6386c4cd-e34a-4fa8-8920-d93eb39b512e
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r180:a8ad25e1c3fc - - 1 file changed: 19 inserted, 0 deleted

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@@ -12,6 +12,25
12 # This library maintain a reference counter on the processes using the
12 # This library maintain a reference counter on the processes using the
13 # directory. It locks the dir to manage critical section when
13 # directory. It locks the dir to manage critical section when
14 # updating the reference counter.
14 # updating the reference counter.
15 + #
16 + # Example usage:
17 + #
18 + # dman = DirInit::Manager.new("mydir")
19 + #
20 + # dman.setup do
21 + # # do some initialization
22 + # end
23 + #
24 + # #... do anything you want
25 + #
26 + # dman.teardown do
27 + # # clean up
28 + # end
29 + #
30 + # DirInit::Manager ensures that the block passed to <tt>setup</tt>
31 + # only runs once by the first process in the concurrent dir usage and
32 + # block passed to <tt>teardown</tt> runs once by the last process in
33 + # that concurrent activities leaving that dir.
15
34
16 module DirInit
35 module DirInit
17
36
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