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Comments
nk...@google.com
For the statement an app that mostly works in background does not mean its unimportant for the user, actually if it's important to the user, it should try to stay in the foreground, i.e., using a
For the phantom processes, it's really a grey area, where the system does allow this kind of processes, but it's not formally supported, and it's not tracked by the system previously - it's going to hurt the overall system performance, as in resource-limited environment, other processes could be starving because of it. Thus we can't let the number of such kind of processes grow arbitrarily. The 32 may or may not be a good number, at least it's in par with the max cached processes, it's hard to justify what number is the perfect one though. I'd also be un-favor with the idea of introducing the per-package limit - from the system health point of view, it doesn't make sense to me.
For the battery optimizations disabled, this is orthogonal to the problem here I think. The battery optimization is more about the controls about background activities like Jobs/Alarms which could impact the battery negatively, while the problem here is more about other system resources such as CPU time and RAM.
For the cases like McAfee Security app, as you also show, the order of the killing is basically based on the parent process's oom adj score - if you app is killed before McAfee, that means it has a better oom adj score.
Description
Version used:
What steps will reproduce the problem?
1. On a slow emulator (arm emulator or a firebase AVD)... I reproed this on API level 22 and 23
2. Run any test that triggers a creation of a dialog and then attempts to perform an action in this new root. For example, something like this:
// this action creates a dialog
onView(withId(R.id.message_input_field))
.perform(clearText(), typeText(":"));
// this action fails
onView(withText(":+1:")).inRoot(isPlatformPopup()).perform(click());
How are you running your tests (via Android Studio, Gradle, adb, etc.)?
adb shell am instrument
What is the expected output? What do you see instead?
Expected: test should pass because Espresso is awesome and waits until the new root is created before performing the action.
Actual: Espresso throws an error like this:
android.support.test.espresso.NoMatchingRootException: Matcher 'with decor view of type PopupWindow$PopupViewContainer' did not match any of the following roots: [Root{application-window-token=android.view.ViewRootImpl$W@1da7ef48, window-token=android.view.ViewRootImpl$W@1da7ef48, has-window-focus=true, layout-params-type=1, layout-params-string=WM.LayoutParams{(0,0)(fillxfill) sim=#10 ty=1 fl=#81810100 wanim=0x1030466 surfaceInsets=Rect(0, 0 - 0, 0) needsMenuKey=2}, decor-view-string=DecorView{id=-1, visibility=VISIBLE, width=480, height=800, has-focus=true, has-focusable=true, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=1}}]
at dalvik.system.VMStack.getThreadStackTrace(Native Method)
at java.lang.Thread.getStackTrace(Thread.java:580)
at android.support.test.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:92)
at android.support.test.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:56)
at android.support.test.espresso.ViewInteraction.runSynchronouslyOnUiThread(ViewInteraction.java:184)
at android.support.test.espresso.ViewInteraction.doPerform(ViewInteraction.java:115)
at android.support.test.espresso.ViewInteraction.perform(ViewInteraction.java:87)
at com.Slack.ui.MessageAutocompleteListTest.addEmojiAutoCompletePopupTest(MessageAutocompleteListTest.java:100)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at android.support.test.internal.statement.UiThreadStatement.evaluate(UiThreadStatement.java:55)
at android.support.test.rule.ActivityTestRule$ActivityStatement.evaluate(ActivityTestRule.java:270)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:59)
at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:262)
at com.Slack.TestButlerRunner.onStart(TestButlerRunner.java:13)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1853)