Is this crash due to loading large Android expansion files as a Qt external resource file?
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I have written my first app for Android with Qt and some ANR reports has been received. (They all look like the code at the end).
From the output I can see that the problem is related to the function:
QResource::registerResource()and it throws because of the new operator. The file to be loaded as an external Qt resource file is very large (500MB+).
I am unable to reproduce the ANR on any of my devices, but I do not have any of the devices the ANR is reported on.
So far the possible problems might be:
- The QResource::registerResource() function might be slow and blocking (running in GUI thread) and therefor the application might crash?
- If, when using QResource::registerResource(), the whole file is loaded into memory and since the file is so large the Android OS refuses to allocate any more memory? (From Qt Doc: "When loaded at run time the resource file will be loaded as one big set of data")
I am sure that some other Qt developer deploying for Android must have had a large Android expansion file. How did you solve it? Any guidance is much appreciated!
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** Build fingerprint: 'samsung/jactiveltexx/jactivelte:5.0.1/LRX22C/I9295XXUDOB4:user/release-keys' Revision: '16' ABI: 'arm' pid: 23341, tid: 23365, name: QtThread >>> no.myApp.www <<< signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr -------- r0 00000000 r1 00005b45 r2 00000006 r3 00000000 r4 ad7ffdb8 r5 00000006 r6 0000000c r7 0000010c r8 ad7fee30 r9 275951ac sl ad7fee6c fp ad7fecf4 ip 00005b45 sp ad7fec88 lr b6f68fc5 pc b6f8c910 cpsr 600f0010 backtrace: #00 pc 00037910 /system/lib/libc.so (tgkill+12) #01 pc 00013fc1 /system/lib/libc.so (pthread_kill+52) #02 pc 00014bdf /system/lib/libc.so (raise+10) #03 pc 00011521 /system/lib/libc.so (__libc_android_abort+36) #04 pc 0000fcac /system/lib/libc.so (abort+4) #05 pc 00050810 /data/app/no.myApp.www-1/lib/arm/libgnustl_shared.so (__gnu_cxx::__verbose_terminate_handler()+348) #06 pc 0004e6e0 /data/app/no.myApp.www-1/lib/arm/libgnustl_shared.so (__cxxabiv1::__terminate(void (*)())+8) #07 pc 0004e780 /data/app/no.myApp.www-1/lib/arm/libgnustl_shared.so (std::terminate()+12) #08 pc 0004eacc /data/app/no.myApp.www-1/lib/arm/libgnustl_shared.so (__cxa_throw+156) #09 pc 0004f0a8 /data/app/no.myApp.www-1/lib/arm/libgnustl_shared.so (operator new(unsigned int)+108) #10 pc 0004f11c /data/app/no.myApp.www-1/lib/arm/libgnustl_shared.so (operator new[](unsigned int)+4) #11 pc 00123179 /data/app/no.myApp.www-1/lib/arm/libQt5Core.so #12 pc 001233d7 /data/app/no.myApp.www-1/lib/arm/libQt5Core.so (QResource::registerResource(QString const&, QString const&)+350) #13 pc 000044ed /data/app/no.myApp.www-1/lib/arm/libmyApp.so (DeviceAndroid::loadExpansionFile(unsigned int)+640) #14 pc 00004925 /data/app/no.myApp.www-1/lib/arm/libmyApp.so #15 pc 00004a43 /data/app/no.myApp.www-1/lib/arm/libmyApp.so (DeviceAndroid::qt_metacall(QMetaObject::Call, int, void**)+30) #16 pc 00189e69 /data/app/no.myApp.www-1/lib/arm/libQt5Core.so (QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**)+44) #17 pc 0013413f /data/app/no.myApp.www-1/lib/arm/libQt5Qml.so #18 pc 000fffcb /data/app/no.myApp.www-1/lib/arm/libQt5Qml.so #19 pc 001002a1 /data/app/no.myApp.www-1/lib/arm/libQt5Qml.so #20 pc 00100533 /data/app/no.myApp.www-1/lib/arm/libQt5Qml.so (QV4::QObjectMethod::callInternal(QV4::CallData*)+574) #21 pc 000d0e09 /data/app/no.myApp.www-1/lib/arm/libQt5Qml.so #22 pc 00108c0f /data/app/no.myApp.www-1/lib/arm/libQt5Qml.so (QV4::Runtime::callProperty(QV4::ExecutionEngine*, int, QV4::CallData*)+366) #23 pc 00008221 <unknown> -
Hi,
A qrc from 500MB ? I really doubt it, I'm even surprised that the files succeeded to compile. It looks rather like a job for Android's assets
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Hi,
A qrc from 500MB ? I really doubt it, I'm even surprised that the files succeeded to compile. It looks rather like a job for Android's assets
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The application is limited to 50MB but you can use APK expansion files
I'd rather go with a limit on the hardware/platform.
