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Emit sorted dir-diff result as soon as preceding results get ready #603

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Emit sorted dir-diff result as soon as preceding results get ready #603

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Commits on Oct 24, 2024

  1. Apply --sort-paths prior to computing diffs 

    This ensures that the json output is also sorted.
    @yuja
    yuja committed Oct 24, 2024
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  2. Emit sorted dir-diff result as soon as preceding results get ready 

    If the directory diff contains lots of changes across files, it's better to
emit earlier results incrementally.

The idea is borrowed from the following thread. The diff producer assigns
incremental index, and the consumer puts the results in BinaryHeap to reorder
them by index.
https://users.rust-lang.org/t/parallel-work-collected-sequentially/13504/3
    @yuja
    yuja committed Oct 24, 2024
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