Review Request 124249: Greatly improve include-path completion performance

[Sergey Kalinichev]

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https://git.reviewboard.kde.org/r/124249/
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Review request for KDevelop.


Repository: kdev-clang


Description
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Clang reparses a document without using PCH internally when editing file's preamble. This is very slow. So instead of locking ParseSession to prevent concurrent access to CXTranslationUnit (which include-path completion doesn't use), let's make ClangParsingEnvironment directly accessible through the session data.


Diffs
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  codecompletion/includepathcompletioncontext.cpp 34f613b 
  duchain/parsesession.h 74999de 
  duchain/parsesession.cpp cfafa33 

Diff: https://git.reviewboard.kde.org/r/124249/diff/


Testing
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I've been using this patch for more than a week. No side effects so far.


Thanks,

Sergey Kalinichev

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