Merge "Rate limit calls to AM.getProcessesInErrorState" into main (dec9be5f) · Commits · e / os / android_frameworks_base

core/java/android/app/ActivityManager.java

+14 −0

Original line number	Diff line number	Diff line
		@@ -233,6 +233,10 @@ public class ActivityManager {
		private static final RateLimitingCache<List<RunningAppProcessInfo>> mRunningProcessesCache =
		new RateLimitingCache<>(10, 4);

		/** Rate-Limiting Cache that allows no more than 200 calls to the service per second. */
		private static final RateLimitingCache<List<ProcessErrorStateInfo>> mErrorProcessesCache =
		new RateLimitingCache<>(10, 2);

		/**
		* Map of callbacks that have registered for {@link UidFrozenStateChanged} events.
		* Will be called when a Uid has become frozen or unfrozen.
		@@ -3685,6 +3689,16 @@ public class ActivityManager {
		* specified.
		*/
		public List<ProcessErrorStateInfo> getProcessesInErrorState() {
		if (Flags.rateLimitGetProcessesInErrorState()) {
		return mErrorProcessesCache.get(() -> {
		return getProcessesInErrorStateInternal();
		});
		} else {
		return getProcessesInErrorStateInternal();
		}
		}

		private List<ProcessErrorStateInfo> getProcessesInErrorStateInternal() {
		try {
		return getService().getProcessesInErrorState();
		} catch (RemoteException e) {

+11 −0

Original line number	Diff line number	Diff line
		@@ -93,3 +93,14 @@ flag {
		}
		}

		flag {
		namespace: "backstage_power"
		name: "rate_limit_get_processes_in_error_state"
		description: "Rate limit calls to getProcessesInErrorState using a cache"
		is_fixed_read_only: true
		bug: "361146083"
		metadata {
		purpose: PURPOSE_BUGFIX
		}
		}