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authornpm <npm@chromium.org>2016-10-26 11:03:43 -0700
committerCommit bot <commit-bot@chromium.org>2016-10-26 11:03:43 -0700
commitd3a2009d75eac3cda442f545ef0865afae7b35cf (patch)
tree9bbc5bbfbd48e1e63acd1bf55cac09d65cef8882 /core/fxcrt
parent1842be87408b06bf0b4c521044c09452caac5c80 (diff)
downloadpdfium-d3a2009d75eac3cda442f545ef0865afae7b35cf.tar.xz
Traverse PDF page tree only once in CPDF_Document
Try 2: main fix was recursively popping elements from the stack. Since the Traverse method can be called on non-root nodes from GetPage(), we have to make sure to properly update the parents. Try 1 at https://codereview.chromium.org/2414423002/ In our current implementation of CPDF_Document::GetPage, we traverse the PDF page tree until we find the index we are looking for. This is slow when we do calls GetPage(0), GetPage(1), ... since in this case the page tree will be traversed n times if there are n pages. This CL makes sure the page tree is only traversed once. Time to load the PDF from the bug below in chrome official build: Before this CL: around 1 minute 25 seconds After this CL: around 4 seconds BUG=chromium:638513 Review-Url: https://codereview.chromium.org/2442403002
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