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Commit 240bea3f authored May 01, 2020 by Marco Ballesio

ActivityManager API to check availability of app freezer

A method to verify the availability of the app freezer is required for
configuration code running in places like the Settings app

Bug: 155465196
Change-Id: I5779d263536091689a099eec0815f207dfbbf6ad
Test: verified its workings through the developer options CL

parent 06028798

core/java/android/app/IActivityManager.aidl

+5 −0

Original line number	Diff line number	Diff line
		@@ -673,4 +673,9 @@ interface IActivityManager {
		* @param state The customized state data
		*/
		void setProcessStateSummary(in byte[] state);

		/**
		* Return whether the app freezer is supported (true) or not (false) by this system.
		*/
		boolean isAppFreezerSupported();
		}

services/core/java/com/android/server/am/ActivityManagerService.java

+11 −0

Original line number	Diff line number	Diff line
		@@ -20171,4 +20171,15 @@ public class ActivityManagerService extends IActivityManager.Stub
		mUsageStatsService.reportLocusUpdate(activity, userId, locusId, appToken);
		}
		}

		@Override
		public boolean isAppFreezerSupported() {
		final long token = Binder.clearCallingIdentity();

		try {
		return mOomAdjuster.mCachedAppOptimizer.isFreezerSupported();
		} finally {
		Binder.restoreCallingIdentity(token);
		}
		}
		}

services/core/java/com/android/server/am/CachedAppOptimizer.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -407,7 +407,7 @@ public final class CachedAppOptimizer {
		/**
		* Determines whether the freezer is correctly supported by this system
		*/
		public boolean isFreezerSupported() {
		public static boolean isFreezerSupported() {
		boolean supported = false;
		FileReader fr = null;