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Questions tagged [art-runtime]

ART is a new Android runtime being introduced experimentally in the Google's Android 4.4 release.

ART, which stands for Android Runtime, handles app execution in a fundamentally different way from Dalvik. The current runtime relies on a Just-In-Time (JIT) compiler to interpret bytecode, a generic version of the original application code. In a manner of speaking, apps are only partially compiled by developers, then the resulting code must go through an interpreter on a user's device each and every time it is run. The process involves a lot of overhead and isn't particularly efficient, but the mechanism makes it easy for apps to run on a variety of hardware and architectures. ART is set to change this process by pre-compiling that bytecode into machine language when apps are first installed, turning them into truly native apps. This process is called Ahead-Of-Time (AOT) compilation. By removing the need to spin up a new virtual machine or run interpreted code, startup times can be cut down immensely and ongoing execution will become faster, as well.

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What is the process android does when starting a app and how it interact with R class at runtime?

Recently when I was learning about resource management of Android, I ran into some interesting issues. 1) From the internal perspective of Android runtime, what steps are taken by android OS to start an installed application? 2) R class- R class is…
XPD
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Android JNI conflicts with Java JNI Specification

According to Java JNI Specification Native Method Arguments: The JNI interface pointer is the first argument to native methods. The JNI interface pointer is of type JNIEnv. The second argument differs depending on whether the native method is…
willyout
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Dexposed crash on ART Runtime

I was testing Dexposed on ART, it crashed randomly at art::ReferenceMapVisitor::VisitQuickFrame(). I think dexposed may process the stack frames incorrectly: .extern artQuickDexposedInvokeHandler ENTRY art_quick_dexposed_invoke_handler …
jokers
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In ART environment, it fails to pass complex Parcelable object

In ART environment, it fails to pass complex Parcelable object. There is the case that calling the CREATOR of another class in the call from the internal processing of Parcel of CREATOR of inner class of a class that implements the Parcelable. That…
Shintaro Katafuchi
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Android - garbage collector error on calling a handler recursively

I am trying to do a job continually. For this job, I am using handler and calling this handler recursively with a constant time interval. My code runs in Samsung Galaxy Note 2 with Android version 4.3, but not runs in Nexus 5 with Android version…
ismailarilik
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Disable ART runtime (vmSafeMode) and dex2oat for an Android Library targeting SDK 22+?

So, to properly disable ART runtime, you add android:vmSafeMode="true" to your application's manifest tag. The issue I am having personally is that I develop an Android Library, and thus I do not have an application tag. This means that my debugging…
Vic Vuci
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how to add a variable in Array class in Android5.1

I'm doing some work in art based on Android5.1, and I want to add a variable in Array class in Array.h(art/runtime/mirror/Array.h). But when I add a "uint32_t tag" in the class, the system in emulator can not start up. So how can I add some…
Kaiyuan Zhao
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ART error message while working with AsynchTask

I am getting a weird error massege while working with AsynchTask, and I am not sure what it refers to. Here is the error log: E/art: Thread[31,tid=13078,WaitingForDebuggerSend,Thread*=0xb711bb58,peer=0x12c007c0,"AsyncTask #2"] suspend count too deep…
keybee
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ART Unit Tests fail, Dalvik works fine

I've been developing an app for a while now (over here) and I'm trying to do both tests on my Android device, and the emulator. Currently I've got a build set up on Travis and all the tests are running fine. Additionally, I have a local emulator set…
dj_bushido
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Should developer consider any design objectives for ART (Android Runtime) with respect to DVM mode?

I think, it might be bit early to ask this question. But need your thoughts on this. I read about ART mode (Android Runttime), which is as follows, "ART is a new Android runtime being introduced experimentally in the 4.4 release KitKat. This is a…
jrh
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Learning smali and Dalvik and Android Run Time

we all know that google is shifting from Dalvik to ART ( 4.4.2 has even experimental support too) for obvious reason, A very basic question is arising in my mind after i recently started working on mdifying the generated smali files for some…
user3575488
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MonoDroid - SIGSEGV when checking Dalvik vs ART

I'm using the below code to determine whether the user has changed the runtime to ART (which Xamarin currently doesn't support and causes my app to crash). private bool IsART { get { try { var systemProperties =…
Jamie
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Can't use USB debugging after ART

I was testing new Android Run Time (ART), but after that I can't use USB debugging. After that I had changed runtime back do Dalvik and factory reset phone with no success? I also have updated drivers.
Matjaž
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If the ability to add application support Android ART?

After filling the application in Google Play for beta testing began to notice that people with Android 4.4 and a virtual machine ART application simply can not run. Is it possible to somehow add support for this virtual machine?
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