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1.6.0 Job initialization triggers a main thread disk read (Android JVM) #3180

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radixdev opened this issue Feb 9, 2022 · 7 comments
Closed

1.6.0 Job initialization triggers a main thread disk read (Android JVM) #3180

radixdev opened this issue Feb 9, 2022 · 7 comments
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@radixdev
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radixdev commented Feb 9, 2022

Android Strictmode is stating that the initialization path of any created Job is triggering expensive disk reads (on the main thread). This behavior was introduced in 1.6.0 in this PR.

Simply calling .launch { } on the CoroutineScope is enough to trigger this disk read issue. I propose that the eager uncaught exception logic is configurable behind a system property or in some way configurable to avoid this issue. Additionally, this code is running as part of an SDK so we cannot completely control when it is executed as if we were the host application.

@nreid260

Custom CoroutineScope

object CompanyCoroutineScope : CoroutineScope {
    private val exceptionHandler = CoroutineExceptionHandler { _, e ->
        companylog(E, e) { "Child job of CompanyCoroutineScope got exception: $e" }
    }

    override val coroutineContext: CoroutineContext = Dispatchers.IO + exceptionHandler + SupervisorJob()
}

The disk reads

2022-02-09 15:05:07.077 21991-21991/com.company.sample D/StrictMode: StrictMode policy violation; ~duration=286 ms: android.os.strictmode.DiskReadViolation
        at android.os.StrictMode$AndroidBlockGuardPolicy.onReadFromDisk(StrictMode.java:1659)
        at java.io.UnixFileSystem.getLastModifiedTime(UnixFileSystem.java:289)
        at java.io.File.lastModified(File.java:937)
        at java.util.zip.ZipFile.<init>(ZipFile.java:265)
        at java.util.zip.ZipFile.<init>(ZipFile.java:187)
        at java.util.jar.JarFile.<init>(JarFile.java:169)
        at java.util.jar.JarFile.<init>(JarFile.java:106)
        at libcore.io.ClassPathURLStreamHandler.<init>(ClassPathURLStreamHandler.java:46)
        at dalvik.system.DexPathList$Element.maybeInit(DexPathList.java:750)
        at dalvik.system.DexPathList$Element.findResource(DexPathList.java:777)
        at dalvik.system.DexPathList.findResources(DexPathList.java:572)
        at dalvik.system.BaseDexClassLoader.findResources(BaseDexClassLoader.java:279)
        at java.lang.ClassLoader.getResources(ClassLoader.java:839)
        at java.util.ServiceLoader$LazyIterator.hasNextService(ServiceLoader.java:349)
        at java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:402)
        at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:488)
        at kotlin.sequences.SequencesKt___SequencesKt.toCollection(_Sequences.kt:786)
        at kotlin.sequences.SequencesKt___SequencesKt.toMutableList(_Sequences.kt:816)
        at kotlin.sequences.SequencesKt___SequencesKt.toList(_Sequences.kt:807)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.<clinit>(CoroutineExceptionHandlerImpl.kt:23)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.initializeDefaultExceptionHandlers(CoroutineExceptionHandlerImpl.kt:27)
        at kotlinx.coroutines.Job.<clinit>(Job.kt:120)
        at kotlinx.coroutines.AbstractCoroutine.<init>(AbstractCoroutine.kt:51)
        at kotlinx.coroutines.StandaloneCoroutine.<init>(Builders.common.kt:190)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch(Builders.common.kt:55)
        at kotlinx.coroutines.BuildersKt.launch(Unknown Source:1)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch$default(Builders.common.kt:47)
        at kotlinx.coroutines.BuildersKt.launch$default(Unknown Source:1)
        at com.company.images.DefaultCompanyImageLoader.initDiskCacheTask(DefaultCompanyImageLoader.kt:213)
        at com.company.images.DefaultCompanyImageLoader.<init>(DefaultCompanyImageLoader.kt:53)
        at com.company.Company.<init>(Company.java:230)
        at com.company.Company.<init>(Company.java:18)
        at com.company.Company.getInstance(Company.java:193)
        at com.company.Company.getInstance(Company.java:22)
        at com.company.sample.CompanyApplication.onCreate(CompanyApplication.kt:76)
        at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1211)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6725)
        at android.app.ActivityThread.access$1500(ActivityThread.java:247)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2053)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7839)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
2022-02-09 15:05:07.078 21991-21991/com.company.sample D/StrictMode: StrictMode policy violation; ~duration=286 ms: android.os.strictmode.DiskReadViolation
        at android.os.StrictMode$AndroidBlockGuardPolicy.onReadFromDisk(StrictMode.java:1659)
        at java.io.UnixFileSystem.getBooleanAttributes(UnixFileSystem.java:250)
        at java.io.File.isDirectory(File.java:843)
        at java.io.File.toURI(File.java:728)
        at libcore.io.ClassPathURLStreamHandler.<init>(ClassPathURLStreamHandler.java:51)
        at dalvik.system.DexPathList$Element.maybeInit(DexPathList.java:750)
        at dalvik.system.DexPathList$Element.findResource(DexPathList.java:777)
        at dalvik.system.DexPathList.findResources(DexPathList.java:572)
        at dalvik.system.BaseDexClassLoader.findResources(BaseDexClassLoader.java:279)
        at java.lang.ClassLoader.getResources(ClassLoader.java:839)
        at java.util.ServiceLoader$LazyIterator.hasNextService(ServiceLoader.java:349)
        at java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:402)
        at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:488)
        at kotlin.sequences.SequencesKt___SequencesKt.toCollection(_Sequences.kt:786)
        at kotlin.sequences.SequencesKt___SequencesKt.toMutableList(_Sequences.kt:816)
        at kotlin.sequences.SequencesKt___SequencesKt.toList(_Sequences.kt:807)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.<clinit>(CoroutineExceptionHandlerImpl.kt:23)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.initializeDefaultExceptionHandlers(CoroutineExceptionHandlerImpl.kt:27)
        at kotlinx.coroutines.Job.<clinit>(Job.kt:120)
        at kotlinx.coroutines.AbstractCoroutine.<init>(AbstractCoroutine.kt:51)
        at kotlinx.coroutines.StandaloneCoroutine.<init>(Builders.common.kt:190)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch(Builders.common.kt:55)
        at kotlinx.coroutines.BuildersKt.launch(Unknown Source:1)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch$default(Builders.common.kt:47)
        at kotlinx.coroutines.BuildersKt.launch$default(Unknown Source:1)
        at com.company.images.DefaultCompanyImageLoader.initDiskCacheTask(DefaultCompanyImageLoader.kt:213)
        at com.company.images.DefaultCompanyImageLoader.<init>(DefaultCompanyImageLoader.kt:53)
        at com.company.Company.<init>(Company.java:230)
        at com.company.Company.<init>(Company.java:18)
        at com.company.Company.getInstance(Company.java:193)
        at com.company.Company.getInstance(Company.java:22)
        at com.company.sample.CompanyApplication.onCreate(CompanyApplication.kt:76)
        at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1211)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6725)
        at android.app.ActivityThread.access$1500(ActivityThread.java:247)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2053)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7839)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
2022-02-09 15:05:07.078 21991-21991/com.company.sample D/StrictMode: StrictMode policy violation; ~duration=285 ms: android.os.strictmode.DiskReadViolation
        at android.os.StrictMode$AndroidBlockGuardPolicy.onReadFromDisk(StrictMode.java:1659)
        at java.io.UnixFileSystem.getLastModifiedTime(UnixFileSystem.java:289)
        at java.io.File.lastModified(File.java:937)
        at java.util.zip.ZipFile.<init>(ZipFile.java:265)
        at java.util.zip.ZipFile.<init>(ZipFile.java:187)
        at java.util.jar.JarFile.<init>(JarFile.java:169)
        at java.util.jar.JarFile.<init>(JarFile.java:106)
        at libcore.io.ClassPathURLStreamHandler.<init>(ClassPathURLStreamHandler.java:46)
        at dalvik.system.DexPathList$Element.maybeInit(DexPathList.java:750)
        at dalvik.system.DexPathList$Element.findResource(DexPathList.java:777)
        at dalvik.system.DexPathList.findResources(DexPathList.java:572)
        at dalvik.system.BaseDexClassLoader.findResources(BaseDexClassLoader.java:279)
        at java.lang.ClassLoader.getResources(ClassLoader.java:839)
        at dalvik.system.BaseDexClassLoader.findResources(BaseDexClassLoader.java:290)
        at java.lang.ClassLoader.getResources(ClassLoader.java:839)
        at java.util.ServiceLoader$LazyIterator.hasNextService(ServiceLoader.java:349)
        at java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:402)
        at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:488)
        at kotlin.sequences.SequencesKt___SequencesKt.toCollection(_Sequences.kt:786)
        at kotlin.sequences.SequencesKt___SequencesKt.toMutableList(_Sequences.kt:816)
        at kotlin.sequences.SequencesKt___SequencesKt.toList(_Sequences.kt:807)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.<clinit>(CoroutineExceptionHandlerImpl.kt:23)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.initializeDefaultExceptionHandlers(CoroutineExceptionHandlerImpl.kt:27)
        at kotlinx.coroutines.Job.<clinit>(Job.kt:120)
        at kotlinx.coroutines.AbstractCoroutine.<init>(AbstractCoroutine.kt:51)
        at kotlinx.coroutines.StandaloneCoroutine.<init>(Builders.common.kt:190)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch(Builders.common.kt:55)
        at kotlinx.coroutines.BuildersKt.launch(Unknown Source:1)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch$default(Builders.common.kt:47)
        at kotlinx.coroutines.BuildersKt.launch$default(Unknown Source:1)
        at com.company.images.DefaultCompanyImageLoader.initDiskCacheTask(DefaultCompanyImageLoader.kt:213)
        at com.company.images.DefaultCompanyImageLoader.<init>(DefaultCompanyImageLoader.kt:53)
        at com.company.Company.<init>(Company.java:230)
        at com.company.Company.<init>(Company.java:18)
        at com.company.Company.getInstance(Company.java:193)
        at com.company.Company.getInstance(Company.java:22)
        at com.company.sample.CompanyApplication.onCreate(CompanyApplication.kt:76)
        at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1211)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6725)
        at android.app.ActivityThread.access$1500(ActivityThread.java:247)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2053)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7839)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
2022-02-09 15:05:07.079 21991-21991/com.company.sample D/StrictMode: StrictMode policy violation; ~duration=285 ms: android.os.strictmode.DiskReadViolation
        at android.os.StrictMode$AndroidBlockGuardPolicy.onReadFromDisk(StrictMode.java:1659)
        at java.io.UnixFileSystem.getBooleanAttributes(UnixFileSystem.java:250)
        at java.io.File.isDirectory(File.java:843)
        at java.io.File.toURI(File.java:728)
        at libcore.io.ClassPathURLStreamHandler.<init>(ClassPathURLStreamHandler.java:51)
        at dalvik.system.DexPathList$Element.maybeInit(DexPathList.java:750)
        at dalvik.system.DexPathList$Element.findResource(DexPathList.java:777)
        at dalvik.system.DexPathList.findResources(DexPathList.java:572)
        at dalvik.system.BaseDexClassLoader.findResources(BaseDexClassLoader.java:279)
        at java.lang.ClassLoader.getResources(ClassLoader.java:839)
        at dalvik.system.BaseDexClassLoader.findResources(BaseDexClassLoader.java:290)
        at java.lang.ClassLoader.getResources(ClassLoader.java:839)
        at java.util.ServiceLoader$LazyIterator.hasNextService(ServiceLoader.java:349)
        at java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:402)
        at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:488)
        at kotlin.sequences.SequencesKt___SequencesKt.toCollection(_Sequences.kt:786)
        at kotlin.sequences.SequencesKt___SequencesKt.toMutableList(_Sequences.kt:816)
        at kotlin.sequences.SequencesKt___SequencesKt.toList(_Sequences.kt:807)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.<clinit>(CoroutineExceptionHandlerImpl.kt:23)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.initializeDefaultExceptionHandlers(CoroutineExceptionHandlerImpl.kt:27)
        at kotlinx.coroutines.Job.<clinit>(Job.kt:120)
        at kotlinx.coroutines.AbstractCoroutine.<init>(AbstractCoroutine.kt:51)
        at kotlinx.coroutines.StandaloneCoroutine.<init>(Builders.common.kt:190)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch(Builders.common.kt:55)
        at kotlinx.coroutines.BuildersKt.launch(Unknown Source:1)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch$default(Builders.common.kt:47)
        at kotlinx.coroutines.BuildersKt.launch$default(Unknown Source:1)
        at com.company.images.DefaultCompanyImageLoader.initDiskCacheTask(DefaultCompanyImageLoader.kt:213)
        at com.company.images.DefaultCompanyImageLoader.<init>(DefaultCompanyImageLoader.kt:53)
        at com.company.Company.<init>(Company.java:230)
        at com.company.Company.<init>(Company.java:18)
        at com.company.Company.getInstance(Company.java:193)
        at com.company.Company.getInstance(Company.java:22)
        at com.company.sample.CompanyApplication.onCreate(CompanyApplication.kt:76)
        at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1211)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6725)
        at android.app.ActivityThread.access$1500(ActivityThread.java:247)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2053)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7839)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
@radixdev radixdev mentioned this issue Feb 9, 2022
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@qwwdfsad
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qwwdfsad commented Feb 10, 2022 •
edited
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Could you please elaborate whether you have R8 enabled?

We previously had the same issue with Dispatchers.Main (#1231), but it was fixed with specific R8 optimization.

We could workaround it with if on Class.forName("android."), but it would be nice to know why the optimization doesn't work in the first place

@radixdev
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Yes, R8 is enabled. The same issue persists

# compiler: R8
# compiler_version: 3.1.51
# min_api: 24
# pg_map_id: e65c6c8
# common_typos_disable
# {"id":"com.android.tools.r8.mapping","version":"1.0"}

2022-02-10 13:13:04.807 3238-3238/com.appboy.sample D/StrictMode: StrictMode policy violation; ~duration=333 ms: android.os.strictmode.DiskReadViolation
        at android.os.StrictMode$AndroidBlockGuardPolicy.onReadFromDisk(StrictMode.java:1659)
        at java.io.UnixFileSystem.getLastModifiedTime(UnixFileSystem.java:289)
        at java.io.File.lastModified(File.java:937)
        at java.util.zip.ZipFile.<init>(ZipFile.java:265)
        at java.util.zip.ZipFile.<init>(ZipFile.java:187)
        at java.util.jar.JarFile.<init>(JarFile.java:169)
        at java.util.jar.JarFile.<init>(JarFile.java:106)
        at libcore.io.ClassPathURLStreamHandler.<init>(ClassPathURLStreamHandler.java:46)
        at dalvik.system.DexPathList$Element.maybeInit(DexPathList.java:750)
        at dalvik.system.DexPathList$Element.findResource(DexPathList.java:777)
        at dalvik.system.DexPathList.findResources(DexPathList.java:572)
        at dalvik.system.BaseDexClassLoader.findResources(BaseDexClassLoader.java:279)
        at java.lang.ClassLoader.getResources(ClassLoader.java:839)
        at java.util.ServiceLoader$LazyIterator.hasNextService(ServiceLoader.java:349)
        at java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:402)
        at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:488)
        at aa.j.g(:786)
        at aa.j.i(:816)
        at aa.j.h(:807)
        at aa.e.h(Unknown Source:0)
        at ca.h0.<clinit>(:23)
        at ca.h0.b(:27)
        at ca.p1.<clinit>(:120)
        at ca.w1.getKey(:29)
        at l9.g$a$a.a(:33)
        at l9.g$a$a.invoke(:32)
        at l9.g$b$a.a(:70)
        at ca.p1$a.b(:112)
        at ca.w1.fold(:27)
        at l9.g$a.a(:32)
        at l9.c.plus(:111)

@qwwdfsad
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qwwdfsad commented Feb 11, 2022 •
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If it is okay for you, could you please share small reproducing project so we can dissect it?

@radixdev
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radixdev commented Feb 14, 2022 •
edited
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Hi @qwwdfsad ,

Apologies for the weekend delay. https://github.com/radixdev/sscs-kotlin-coroutines-3180 is a reproducing project.

CustomCoroutineScope is the relevant coroutine object

2022-02-14 14:17:10.836 16958-16958/com.radix.myapplication D/StrictMode: StrictMode policy violation; ~duration=19 ms: android.os.strictmode.DiskReadViolation
        at android.os.StrictMode$AndroidBlockGuardPolicy.onReadFromDisk(StrictMode.java:1659)
        at java.io.UnixFileSystem.getLastModifiedTime(UnixFileSystem.java:289)
        at java.io.File.lastModified(File.java:937)
        at java.util.zip.ZipFile.<init>(ZipFile.java:265)
        at java.util.zip.ZipFile.<init>(ZipFile.java:187)
        at java.util.jar.JarFile.<init>(JarFile.java:169)
        at java.util.jar.JarFile.<init>(JarFile.java:106)
        at libcore.io.ClassPathURLStreamHandler.<init>(ClassPathURLStreamHandler.java:46)
        at dalvik.system.DexPathList$Element.maybeInit(DexPathList.java:750)
        at dalvik.system.DexPathList$Element.findResource(DexPathList.java:777)
        at dalvik.system.DexPathList.findResources(DexPathList.java:572)
        at dalvik.system.BaseDexClassLoader.findResources(BaseDexClassLoader.java:279)
        at java.lang.ClassLoader.getResources(ClassLoader.java:839)
        at java.util.ServiceLoader$LazyIterator.hasNextService(ServiceLoader.java:349)
        at java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:402)
        at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:488)
        at kotlin.sequences.SequencesKt___SequencesKt.toCollection(_Sequences.kt:786)
        at kotlin.sequences.SequencesKt___SequencesKt.toMutableList(_Sequences.kt:816)
        at kotlin.sequences.SequencesKt___SequencesKt.toList(_Sequences.kt:807)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.<clinit>(CoroutineExceptionHandlerImpl.kt:23)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.initializeDefaultExceptionHandlers(CoroutineExceptionHandlerImpl.kt:27)
        at kotlinx.coroutines.Job.<clinit>(Job.kt:120)
        at kotlinx.coroutines.JobSupport.getKey(JobSupport.kt:29)
        at kotlin.coroutines.CoroutineContext$plus$1.invoke(CoroutineContext.kt:33)
        at kotlin.coroutines.CoroutineContext$plus$1.invoke(CoroutineContext.kt:32)
        at kotlin.coroutines.CoroutineContext$Element$DefaultImpls.fold(CoroutineContext.kt:70)
        at kotlinx.coroutines.Job$DefaultImpls.fold(Job.kt:112)
        at kotlinx.coroutines.JobSupport.fold(JobSupport.kt:27)
        at kotlin.coroutines.CoroutineContext$DefaultImpls.plus(CoroutineContext.kt:32)
        at kotlin.coroutines.CombinedContext.plus(CoroutineContextImpl.kt:111)
        at com.radix.myapplication.CustomCoroutineScope.<clinit>(CustomCoroutineScope.kt:17)
        at com.radix.myapplication.MainActivity.onCreate(MainActivity.kt:13)
        at android.app.Activity.performCreate(Activity.java:8050)
        at android.app.Activity.performCreate(Activity.java:8030)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1329)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3608)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3792)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2210)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7839)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
2022-02-14 14:17:12.630 16958-16970/com.radix.myapplication W/System: A resource failed to call close. 
2022-02-14 14:17:13.254 16958-16958/com.radix.myapplication D/StrictMode: StrictMode policy violation; ~duration=19 ms: android.os.strictmode.DiskReadViolation
        at android.os.StrictMode$AndroidBlockGuardPolicy.onReadFromDisk(StrictMode.java:1659)
        at java.io.UnixFileSystem.getBooleanAttributes(UnixFileSystem.java:250)
        at java.io.File.isDirectory(File.java:843)
        at java.io.File.toURI(File.java:728)
        at libcore.io.ClassPathURLStreamHandler.<init>(ClassPathURLStreamHandler.java:51)
        at dalvik.system.DexPathList$Element.maybeInit(DexPathList.java:750)
        at dalvik.system.DexPathList$Element.findResource(DexPathList.java:777)
        at dalvik.system.DexPathList.findResources(DexPathList.java:572)
        at dalvik.system.BaseDexClassLoader.findResources(BaseDexClassLoader.java:279)
        at java.lang.ClassLoader.getResources(ClassLoader.java:839)
        at java.util.ServiceLoader$LazyIterator.hasNextService(ServiceLoader.java:349)
        at java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:402)
        at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:488)
        at kotlin.sequences.SequencesKt___SequencesKt.toCollection(_Sequences.kt:786)
        at kotlin.sequences.SequencesKt___SequencesKt.toMutableList(_Sequences.kt:816)
        at kotlin.sequences.SequencesKt___SequencesKt.toList(_Sequences.kt:807)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.<clinit>(CoroutineExceptionHandlerImpl.kt:23)
        at kotlinx.coroutines.CoroutineExceptionHandlerImplKt.initializeDefaultExceptionHandlers(CoroutineExceptionHandlerImpl.kt:27)
        at kotlinx.coroutines.Job.<clinit>(Job.kt:120)
        at kotlinx.coroutines.JobSupport.getKey(JobSupport.kt:29)
        at kotlin.coroutines.CoroutineContext$plus$1.invoke(CoroutineContext.kt:33)
        at kotlin.coroutines.CoroutineContext$plus$1.invoke(CoroutineContext.kt:32)
        at kotlin.coroutines.CoroutineContext$Element$DefaultImpls.fold(CoroutineContext.kt:70)
        at kotlinx.coroutines.Job$DefaultImpls.fold(Job.kt:112)
        at kotlinx.coroutines.JobSupport.fold(JobSupport.kt:27)
        at kotlin.coroutines.CoroutineContext$DefaultImpls.plus(CoroutineContext.kt:32)
        at kotlin.coroutines.CombinedContext.plus(CoroutineContextImpl.kt:111)
        at com.radix.myapplication.CustomCoroutineScope.<clinit>(CustomCoroutineScope.kt:17)
        at com.radix.myapplication.MainActivity.onCreate(MainActivity.kt:13)
        at android.app.Activity.performCreate(Activity.java:8050)
        at android.app.Activity.performCreate(Activity.java:8030)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1329)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3608)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3792)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2210)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7839)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)

@qwwdfsad qwwdfsad added the bug label Feb 15, 2022
qwwdfsad added a commit that referenced this issue Feb 15, 2022
@qwwdfsad
Do not load a CoroutineExceptionHandler SL eagerly on Android as it c…
f2a41d4 
…auses verification of the whole JAR/dex (-> file I/O) and ANR

Fixes #3180
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Thanks! Verified my fix works

@qwwdfsad qwwdfsad mentioned this issue Feb 15, 2022
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@radixdev radixdev mentioned this issue Feb 18, 2022
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@radixdev radixdev mentioned this issue Mar 28, 2022
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qwwdfsad commented Apr 6, 2022

Fixed in 1.6.1

@qwwdfsad qwwdfsad closed this as completed Apr 6, 2022
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radixdev commented Apr 6, 2022

Thank you @qwwdfsad !

@kwazii1231 kwazii1231 mentioned this issue Oct 10, 2022
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