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<> One , Huawei EMUI10.1 System update description ：
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<> Two , The latest download from Huawei application market 3.6.1 Version of Sina News quick version ：
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<> Three , Test it ：
<>3.1 performance
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I also made a comparison in the same one level On non Huawei mobile phones , It is found that cold start is fast at some time , Hot start is almost the same , Although the performance is not as big as expected , But it's a sign that the ark is officially opening its foreign products , Look forward to the performance optimization in the future .
<>3.2 Run the test
<> Observe the installation package and find a different place ：
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<> Obviously , because maple Is the name of the intermediate file after the ark compiler has finished processing , Open and find out ：
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<> Before analysis, test to see if there is any separation from Android java virtual machine ：
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<> On the right, I deleted almost all of them dex Classes and methods , Keep only one dex The shell of
, Avoid system detection , If not, it may not be installed , And then repackage , In Huawei EMUI10.1 No problem running on , Explain after the ark compiler processing APP Completely detached dalvik/art, Really NB.
<> Because mobile phones can't help it root, Simple runtime observation log can also see a basic start-up time maple technological process ：
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<> Four , Brief analysis ：
<>maple Folder ：
<>apk.info： It's about this APK A record of some information at compile time ;
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the other one mapleclasses.so That's what the ark dealt with above dex File generated so file , It's a little big at first ,20 many M,APK The whole bag is bigger than before 10M about , This may be a problem for the ark to solve in the future , But it doesn't matter here .
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<>libmaplecore-all.so The document is APP The toolchain, Because the cell phone doesn't root be unable to attain ;
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<> You can see the festival ,.java_text It's the whole thing so Document core , It should be right dex The main embodiment after the translation of documents .
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This is RC Mechanism management and some functions referenced , And some interface functions for call processing between functions , about so There are also a large number of strings in the file , It is the main point of future reverse analysis , Roughly analyzed and observed
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<> Here's a way ：Setvideolist Take a simple look ：
<>java The method of layer correspondence ：
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<> After the ark has been disposed of so In the file ：
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You can see by passing the corresponding parameters "setVideoList|(Lcom/sina/sinavideo/sdk/data/VDVideoListInfo;)V",0" to .MCC_getFuncPtrFromItab Call processing , It's logical .
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<> Five , summary ：
<> I have a general look , The following points are found ：
<>1. Huawei did use the ark to break away from Android virtual machines , And it can solve all the problems of conversion performance compatibility and hot change in this time , The spirit of study is really worth learning .
<>2. No significant improvement in performance may be in that exception handling and GC/RC That piece needs further optimization , Trust them to do well , Still looking forward to it ;
<> Areas for continuous improvement ：
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1. Huawei continues to keep it in order to be compatible with other mobile phones dex file , But it's compiled so The files are quite large , Volume is an optimized place , If it's a big one APP The words of dex A lot of documents, big words , It could be big .
<>2. It's compiled so file , String and logic are too obvious to follow J2C The effect of conversion is similar , Third party protection is required ; Of course, it can be abandoned dex The security of the file has been greatly improved .
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