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authornpm <npm@chromium.org>2016-11-04 12:54:51 -0700
committerCommit bot <commit-bot@chromium.org>2016-11-04 12:54:51 -0700
commitec64cee9acccd0d1e574bbbd8aa91b08c1cf254f (patch)
tree1fe1ed80241bffe81cd34786785ef7db5a8494c6 /docs
parent33fdebc3da676bff84d0fd0f69b9087c0c12dfeb (diff)
downloadpdfium-ec64cee9acccd0d1e574bbbd8aa91b08c1cf254f.tar.xz
Traverse PDF page tree only once in CPDF_Document Try 3
Now, we do not start traversal from where we were at, but from the top. This makes the code less prone to bugs, as now there is no need to call methods to recursively fix things. This will save a lot of time when the trees are rather flat, as in the PDF file in the bug. It can still be slow, for instance if we have a chain of page nodes, and the last in the chain contains all of the pages (this is artificial). Try 2 at https://codereview.chromium.org/2442403002/ Also added test where Try 2 would have failed. Tested the pdf from the bug on my Mac: With this CL: load in 21 seconds Without this CL: did not load in 4 minutes, got tired of waiting BUG=chromium:638513 Review-Url: https://codereview.chromium.org/2470803003
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