[asterisk-dev] [Code Review] Fix timeouts for ast_waitfordigit_full

[Mark Michelson]

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/branches/1.8/main/channel.c
<https://reviewboard.asterisk.org/r/2109/#comment13651>

    I was about to comment about how this has a slight semantic change in that passing a negative timeout to ast_waitfordigit_full() no longer would have the same effect as it previously did.
    
    Then I noticed a comment above ast_waitfordigit() in channel.c that says "/* XXX never to be called with ms = -1 */". I also noticed that ast_waitfor_digit[_full]() is never called with a negative timeout. So from all this, I'd say that the semantic change is a positive thing, and the XXX comment should be moved to the header file.


- Mark


On Sept. 12, 2012, 1:04 p.m., David Lee wrote:
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> (Updated Sept. 12, 2012, 1:04 p.m.)
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> Review request for Asterisk Developers and Mark Michelson.
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> Summary
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> ast_waitfordigit_full would simply pass its timeout to ast_waitfor_nandfds, expecting it to decrement the timeout by however many milliseconds were waited. This is a problem if it consistently waits less than 1ms, the timeout will never be decremented, and we wait... FOREVER!
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> This patch instead has ast_waitfordigit_full manage the timeout itself.
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> This addresses bug ASTERISK-20375.
>     https://issues.asterisk.org/jira/browse/ASTERISK-20375
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> Diffs
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>   /branches/1.8/main/channel.c 372975 
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> Diff: https://reviewboard.asterisk.org/r/2109/diff
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> Testing
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> Mark confirmed that with the not-cleaned-up version of this patch, it fixed ASTERISK-20375. The cleanup consisted of changing variable names, adding comments, removing debug logging.
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> Thanks,
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> David
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