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authorLibravatar Lars Schneider <larsxschneider@gmail.com>2017-06-30 22:41:28 +0200
committerLibravatar Junio C Hamano <gitster@pobox.com>2017-06-30 13:50:41 -0700
commit2841e8f81cb2820024804b9341577be1d0ce1240 (patch)
tree21a9a9a8528b07bbd516ff1384156a20ea5f8464 /t/t7062-wtstatus-ignorecase.sh
parentconvert: refactor capabilities negotiation (diff)
downloadtgif-2841e8f81cb2820024804b9341577be1d0ce1240.tar.xz
convert: add "status=delayed" to filter process protocol
Some `clean` / `smudge` filters may require a significant amount of time to process a single blob (e.g. the Git LFS smudge filter might perform network requests). During this process the Git checkout operation is blocked and Git needs to wait until the filter is done to continue with the checkout. Teach the filter process protocol, introduced in edcc8581 ("convert: add filter.<driver>.process option", 2016-10-16), to accept the status "delayed" as response to a filter request. Upon this response Git continues with the checkout operation. After the checkout operation Git calls "finish_delayed_checkout" which queries the filter for remaining blobs. If the filter is still working on the completion, then the filter is expected to block. If the filter has completed all remaining blobs then an empty response is expected. Git has a multiple code paths that checkout a blob. Support delayed checkouts only in `clone` (in unpack-trees.c) and `checkout` operations for now. The optimization is most effective in these code paths as all files of the tree are processed. Signed-off-by: Lars Schneider <larsxschneider@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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