diff --git a/services/java/com/android/server/ProcessMap.java b/services/java/com/android/server/ProcessMap.java
index 6b26403..20c97ba 100644
--- a/services/java/com/android/server/ProcessMap.java
+++ b/services/java/com/android/server/ProcessMap.java
@@ -16,13 +16,12 @@
 
 package com.android.server;
 
+import android.util.ArrayMap;
 import android.util.SparseArray;
 
-import java.util.HashMap;
-
 public class ProcessMap<E> {
-    final HashMap<String, SparseArray<E>> mMap
-            = new HashMap<String, SparseArray<E>>();
+    final ArrayMap<String, SparseArray<E>> mMap
+            = new ArrayMap<String, SparseArray<E>>();
     
     public E get(String name, int uid) {
         SparseArray<E> uids = mMap.get(name);
@@ -50,7 +49,7 @@
         }
     }
     
-    public HashMap<String, SparseArray<E>> getMap() {
+    public ArrayMap<String, SparseArray<E>> getMap() {
         return mMap;
     }
 }
diff --git a/services/java/com/android/server/am/ActiveServices.java b/services/java/com/android/server/am/ActiveServices.java
index a77379e..98c4352 100644
--- a/services/java/com/android/server/am/ActiveServices.java
+++ b/services/java/com/android/server/am/ActiveServices.java
@@ -57,7 +57,7 @@
 import android.util.SparseArray;
 import android.util.TimeUtils;
 
-public class ActiveServices {
+public final class ActiveServices {
     static final boolean DEBUG_SERVICE = ActivityManagerService.DEBUG_SERVICE;
     static final boolean DEBUG_SERVICE_EXECUTING = ActivityManagerService.DEBUG_SERVICE_EXECUTING;
     static final boolean DEBUG_MU = ActivityManagerService.DEBUG_MU;
diff --git a/services/java/com/android/server/am/ActivityManagerService.java b/services/java/com/android/server/am/ActivityManagerService.java
index bb20174..f06b9a6 100644
--- a/services/java/com/android/server/am/ActivityManagerService.java
+++ b/services/java/com/android/server/am/ActivityManagerService.java
@@ -26,6 +26,7 @@
 
 import android.app.AppOpsManager;
 import android.appwidget.AppWidgetManager;
+import android.util.ArrayMap;
 import com.android.internal.R;
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.app.IAppOpsService;
@@ -401,6 +402,12 @@
     final ProcessMap<ProcessRecord> mProcessNames = new ProcessMap<ProcessRecord>();
 
     /**
+     * Tracking long-term execution of processes to look for abuse and other
+     * bad app behavior.
+     */
+    final ProcessTracker mProcessTracker = new ProcessTracker();
+
+    /**
      * The currently running isolated processes.
      */
     final SparseArray<ProcessRecord> mIsolatedProcesses = new SparseArray<ProcessRecord>();
@@ -614,8 +621,8 @@
      * by the user ID the sticky is for, and can include UserHandle.USER_ALL
      * for stickies that are sent to all users.
      */
-    final SparseArray<HashMap<String, ArrayList<Intent>>> mStickyBroadcasts =
-            new SparseArray<HashMap<String, ArrayList<Intent>>>();
+    final SparseArray<ArrayMap<String, ArrayList<Intent>>> mStickyBroadcasts =
+            new SparseArray<ArrayMap<String, ArrayList<Intent>>>();
 
     final ActiveServices mServices;
 
@@ -803,16 +810,16 @@
     int mLruSeq = 0;
 
     /**
-     * Keep track of the non-hidden/empty process we last found, to help
-     * determine how to distribute hidden/empty processes next time.
+     * Keep track of the non-cached/empty process we last found, to help
+     * determine how to distribute cached/empty processes next time.
      */
-    int mNumNonHiddenProcs = 0;
+    int mNumNonCachedProcs = 0;
 
     /**
-     * Keep track of the number of hidden procs, to balance oom adj
+     * Keep track of the number of cached procs, to balance oom adj
      * distribution between those and empty procs.
      */
-    int mNumHiddenProcs = 0;
+    int mNumCachedProcs = 0;
 
     /**
      * Keep track of the number of service processes we last found, to
@@ -895,7 +902,7 @@
      */
     boolean mBooted = false;
 
-    int mProcessLimit = ProcessList.MAX_HIDDEN_APPS;
+    int mProcessLimit = ProcessList.MAX_CACHED_APPS;
     int mProcessLimitOverride = -1;
 
     WindowManagerService mWindowManager;
@@ -1476,6 +1483,7 @@
             ServiceManager.addService("meminfo", new MemBinder(m));
             ServiceManager.addService("gfxinfo", new GraphicsBinder(m));
             ServiceManager.addService("dbinfo", new DbBinder(m));
+            ServiceManager.addService("procstats", new ProcBinder(m));
             if (MONITOR_CPU_USAGE) {
                 ServiceManager.addService("cpuinfo", new CpuBinder(m));
             }
@@ -1692,6 +1700,26 @@
         }
     }
 
+    static class ProcBinder extends Binder {
+        ActivityManagerService mActivityManagerService;
+        ProcBinder(ActivityManagerService activityManagerService) {
+            mActivityManagerService = activityManagerService;
+        }
+
+        @Override
+        protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
+            if (mActivityManagerService.checkCallingPermission(android.Manifest.permission.DUMP)
+                    != PackageManager.PERMISSION_GRANTED) {
+                pw.println("Permission Denial: can't dump procstats from from pid="
+                        + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid()
+                        + " without permission " + android.Manifest.permission.DUMP);
+                return;
+            }
+
+            mActivityManagerService.dumpProcessTracker(fd, pw, args);
+        }
+    }
+
     private ActivityManagerService() {
         Slog.i(TAG, "Memory class: " + ActivityManager.staticGetMemoryClass());
 
@@ -1780,7 +1808,9 @@
             // We need to tell all apps about the system property change.
             ArrayList<IBinder> procs = new ArrayList<IBinder>();
             synchronized(this) {
-                for (SparseArray<ProcessRecord> apps : mProcessNames.getMap().values()) {
+                final int NP = mProcessNames.getMap().size();
+                for (int ip=0; ip<NP; ip++) {
+                    SparseArray<ProcessRecord> apps = mProcessNames.getMap().valueAt(ip);
                     final int NA = apps.size();
                     for (int ia=0; ia<NA; ia++) {
                         ProcessRecord app = apps.valueAt(ia);
@@ -2000,22 +2030,22 @@
             // If this process contains content providers, we want to keep
             // it a little more strongly.
             app.lruWeight = app.lastActivityTime - ProcessList.CONTENT_APP_IDLE_OFFSET;
-            // Also don't let it kick out the first few "real" hidden processes.
-            skipTop = ProcessList.MIN_HIDDEN_APPS;
+            // Also don't let it kick out the first few "real" cached processes.
+            skipTop = ProcessList.MIN_CACHED_APPS;
         } else {
             // If this process doesn't have activities, we less strongly
             // want to keep it around, and generally want to avoid getting
             // in front of any very recently used activities.
             app.lruWeight = app.lastActivityTime - ProcessList.EMPTY_APP_IDLE_OFFSET;
-            // Also don't let it kick out the first few "real" hidden processes.
-            skipTop = ProcessList.MIN_HIDDEN_APPS;
+            // Also don't let it kick out the first few "real" cached processes.
+            skipTop = ProcessList.MIN_CACHED_APPS;
         }
 
         while (i >= 0) {
             ProcessRecord p = mLruProcesses.get(i);
             // If this app shouldn't be in front of the first N background
-            // apps, then skip over that many that are currently hidden.
-            if (skipTop > 0 && p.setAdj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
+            // apps, then skip over that many that are currently cached.
+            if (skipTop > 0 && p.setAdj >= ProcessList.CACHED_APP_MIN_ADJ) {
                 skipTop--;
             }
             if (p.lruWeight <= app.lruWeight || i < bestPos) {
@@ -3179,7 +3209,7 @@
                 boolean haveBg = false;
                 for (int i=mLruProcesses.size()-1; i>=0; i--) {
                     ProcessRecord rec = mLruProcesses.get(i);
-                    if (rec.thread != null && rec.setAdj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
+                    if (rec.thread != null && rec.setAdj >= ProcessList.CACHED_APP_MIN_ADJ) {
                         haveBg = true;
                         break;
                     }
@@ -3703,7 +3733,9 @@
         try {
             synchronized(this) {
                 ArrayList<ProcessRecord> procs = new ArrayList<ProcessRecord>();
-                for (SparseArray<ProcessRecord> apps : mProcessNames.getMap().values()) {
+                final int NP = mProcessNames.getMap().size();
+                for (int ip=0; ip<NP; ip++) {
+                    SparseArray<ProcessRecord> apps = mProcessNames.getMap().valueAt(ip);
                     final int NA = apps.size();
                     for (int ia=0; ia<NA; ia++) {
                         ProcessRecord app = apps.valueAt(ia);
@@ -3713,7 +3745,7 @@
                         }
                         if (app.removed) {
                             procs.add(app);
-                        } else if (app.setAdj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
+                        } else if (app.setAdj >= ProcessList.CACHED_APP_MIN_ADJ) {
                             app.removed = true;
                             procs.add(app);
                         }
@@ -3940,7 +3972,9 @@
         // same UID (except for the system or root user), and all whose name
         // matches the package name.
         final String procNamePrefix = packageName != null ? (packageName + ":") : null;
-        for (SparseArray<ProcessRecord> apps : mProcessNames.getMap().values()) {
+        final int NP = mProcessNames.getMap().size();
+        for (int ip=0; ip<NP; ip++) {
+            SparseArray<ProcessRecord> apps = mProcessNames.getMap().valueAt(ip);
             final int NA = apps.size();
             for (int ia=0; ia<NA; ia++) {
                 ProcessRecord app = apps.valueAt(ia);
@@ -4026,9 +4060,9 @@
                 Slog.i(TAG, "Force stopping u" + userId + ": " + reason);
             }
 
-            Iterator<SparseArray<Long>> badApps = mProcessCrashTimes.getMap().values().iterator();
-            while (badApps.hasNext()) {
-                SparseArray<Long> ba = badApps.next();
+            final ArrayMap<String, SparseArray<Long>> pmap = mProcessCrashTimes.getMap();
+            for (int ip=pmap.size()-1; ip>=0; ip--) {
+                SparseArray<Long> ba = pmap.valueAt(ip);
                 for (i=ba.size()-1; i>=0; i--) {
                     boolean remove = false;
                     final int entUid = ba.keyAt(i);
@@ -4050,7 +4084,7 @@
                     }
                 }
                 if (ba.size() == 0) {
-                    badApps.remove();
+                    pmap.removeAt(ip);
                 }
             }
         }
@@ -4974,7 +5008,7 @@
         enforceCallingPermission(android.Manifest.permission.SET_PROCESS_LIMIT,
                 "setProcessLimit()");
         synchronized (this) {
-            mProcessLimit = max < 0 ? ProcessList.MAX_HIDDEN_APPS : max;
+            mProcessLimit = max < 0 ? ProcessList.MAX_CACHED_APPS : max;
             mProcessLimitOverride = max;
         }
         trimApplications();
@@ -5945,12 +5979,12 @@
     @Override
     public void getMemoryInfo(ActivityManager.MemoryInfo outInfo) {
         final long homeAppMem = mProcessList.getMemLevel(ProcessList.HOME_APP_ADJ);
-        final long hiddenAppMem = mProcessList.getMemLevel(ProcessList.HIDDEN_APP_MIN_ADJ);
+        final long cachedAppMem = mProcessList.getMemLevel(ProcessList.CACHED_APP_MIN_ADJ);
         outInfo.availMem = Process.getFreeMemory();
         outInfo.totalMem = Process.getTotalMemory();
         outInfo.threshold = homeAppMem;
-        outInfo.lowMemory = outInfo.availMem < (homeAppMem + ((hiddenAppMem-homeAppMem)/2));
-        outInfo.hiddenAppThreshold = hiddenAppMem;
+        outInfo.lowMemory = outInfo.availMem < (homeAppMem + ((cachedAppMem-homeAppMem)/2));
+        outInfo.hiddenAppThreshold = cachedAppMem;
         outInfo.secondaryServerThreshold = mProcessList.getMemLevel(
                 ProcessList.SERVICE_ADJ);
         outInfo.visibleAppThreshold = mProcessList.getMemLevel(
@@ -6177,10 +6211,11 @@
             // Find any running processes associated with this app.
             final String pkg = component.getPackageName();
             ArrayList<ProcessRecord> procs = new ArrayList<ProcessRecord>();
-            HashMap<String, SparseArray<ProcessRecord>> pmap = mProcessNames.getMap();
-            for (SparseArray<ProcessRecord> uids : pmap.values()) {
-                for (int i=0; i<uids.size(); i++) {
-                    ProcessRecord proc = uids.valueAt(i);
+            ArrayMap<String, SparseArray<ProcessRecord>> pmap = mProcessNames.getMap();
+            for (int i=0; i<pmap.size(); i++) {
+                SparseArray<ProcessRecord> uids = pmap.valueAt(i);
+                for (int j=0; j<uids.size(); j++) {
+                    ProcessRecord proc = uids.valueAt(j);
                     if (proc.userId != tr.userId) {
                         continue;
                     }
@@ -7279,7 +7314,8 @@
         synchronized (stats) {
             ps = stats.getProcessStatsLocked(info.uid, proc);
         }
-        return new ProcessRecord(ps, thread, info, proc, uid);
+        return new ProcessRecord(ps, thread, info, proc, uid,
+                mProcessTracker.getStateLocked(info.processName, info.uid));
     }
 
     final ProcessRecord addAppLocked(ApplicationInfo info, boolean isolated) {
@@ -7908,11 +7944,11 @@
                 }
             }
             
-            // If the worst oom_adj is somewhere in the hidden proc LRU range,
-            // then constrain it so we will kill all hidden procs.
-            if (worstType < ProcessList.HIDDEN_APP_MAX_ADJ
-                    && worstType > ProcessList.HIDDEN_APP_MIN_ADJ) {
-                worstType = ProcessList.HIDDEN_APP_MIN_ADJ;
+            // If the worst oom_adj is somewhere in the cached proc LRU range,
+            // then constrain it so we will kill all cached procs.
+            if (worstType < ProcessList.CACHED_APP_MAX_ADJ
+                    && worstType > ProcessList.CACHED_APP_MIN_ADJ) {
+                worstType = ProcessList.CACHED_APP_MIN_ADJ;
             }
 
             // If this is not a secure call, don't let it kill processes that
@@ -8815,7 +8851,9 @@
         }
 
         synchronized (this) {
-            for (SparseArray<ProcessRecord> apps : mProcessNames.getMap().values()) {
+            final int NP = mProcessNames.getMap().size();
+            for (int ip=0; ip<NP; ip++) {
+                SparseArray<ProcessRecord> apps = mProcessNames.getMap().valueAt(ip);
                 final int NA = apps.size();
                 for (int ia=0; ia<NA; ia++) {
                     ProcessRecord p = apps.valueAt(ia);
@@ -9174,9 +9212,9 @@
     }
 
     static int oomAdjToImportance(int adj, ActivityManager.RunningAppProcessInfo currApp) {
-        if (adj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
+        if (adj >= ProcessList.CACHED_APP_MIN_ADJ) {
             if (currApp != null) {
-                currApp.lru = adj - ProcessList.HIDDEN_APP_MIN_ADJ + 1;
+                currApp.lru = adj - ProcessList.CACHED_APP_MIN_ADJ + 1;
             }
             return ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
         } else if (adj >= ProcessList.SERVICE_B_ADJ) {
@@ -9585,7 +9623,9 @@
         pw.println("ACTIVITY MANAGER RUNNING PROCESSES (dumpsys activity processes)");
 
         if (dumpAll) {
-            for (SparseArray<ProcessRecord> procs : mProcessNames.getMap().values()) {
+            final int NP = mProcessNames.getMap().size();
+            for (int ip=0; ip<NP; ip++) {
+                SparseArray<ProcessRecord> procs = mProcessNames.getMap().valueAt(ip);
                 final int NA = procs.size();
                 for (int ia=0; ia<NA; ia++) {
                     ProcessRecord r = procs.valueAt(ia);
@@ -9715,10 +9755,11 @@
         if (mProcessCrashTimes.getMap().size() > 0) {
             boolean printed = false;
             long now = SystemClock.uptimeMillis();
-            for (Map.Entry<String, SparseArray<Long>> procs
-                    : mProcessCrashTimes.getMap().entrySet()) {
-                String pname = procs.getKey();
-                SparseArray<Long> uids = procs.getValue();
+            final ArrayMap<String, SparseArray<Long>> pmap = mProcessCrashTimes.getMap();
+            final int NP = pmap.size();
+            for (int ip=0; ip<NP; ip++) {
+                String pname = pmap.keyAt(ip);
+                SparseArray<Long> uids = pmap.valueAt(ip);
                 final int N = uids.size();
                 for (int i=0; i<N; i++) {
                     int puid = uids.keyAt(i);
@@ -9745,10 +9786,11 @@
 
         if (mBadProcesses.getMap().size() > 0) {
             boolean printed = false;
-            for (Map.Entry<String, SparseArray<Long>> procs
-                    : mBadProcesses.getMap().entrySet()) {
-                String pname = procs.getKey();
-                SparseArray<Long> uids = procs.getValue();
+            final ArrayMap<String, SparseArray<Long>> pmap = mBadProcesses.getMap();
+            final int NP = pmap.size();
+            for (int ip=0; ip<NP; ip++) {
+                String pname = pmap.keyAt(ip);
+                SparseArray<Long> uids = pmap.valueAt(ip);
                 final int N = uids.size();
                 for (int i=0; i<N; i++) {
                     int puid = uids.keyAt(i);
@@ -9915,8 +9957,8 @@
                 pw.println("  mGoingToSleep=" + mStackSupervisor.mGoingToSleep);
                 pw.println("  mLaunchingActivity=" + getFocusedStack().mLaunchingActivity);
                 pw.println("  mAdjSeq=" + mAdjSeq + " mLruSeq=" + mLruSeq);
-                pw.println("  mNumNonHiddenProcs=" + mNumNonHiddenProcs
-                        + " mNumHiddenProcs=" + mNumHiddenProcs
+                pw.println("  mNumNonCachedProcs=" + mNumNonCachedProcs
+                        + " mNumCachedProcs=" + mNumCachedProcs
                         + " mNumServiceProcs=" + mNumServiceProcs
                         + " mNewNumServiceProcs=" + mNewNumServiceProcs);
             }
@@ -9975,8 +10017,8 @@
             pw.print("    HOME_APP_ADJ: "); pw.println(ProcessList.HOME_APP_ADJ);
             pw.print("    PREVIOUS_APP_ADJ: "); pw.println(ProcessList.PREVIOUS_APP_ADJ);
             pw.print("    SERVICE_B_ADJ: "); pw.println(ProcessList.SERVICE_B_ADJ);
-            pw.print("    HIDDEN_APP_MIN_ADJ: "); pw.println(ProcessList.HIDDEN_APP_MIN_ADJ);
-            pw.print("    HIDDEN_APP_MAX_ADJ: "); pw.println(ProcessList.HIDDEN_APP_MAX_ADJ);
+            pw.print("    CACHED_APP_MIN_ADJ: "); pw.println(ProcessList.CACHED_APP_MIN_ADJ);
+            pw.print("    CACHED_APP_MAX_ADJ: "); pw.println(ProcessList.CACHED_APP_MAX_ADJ);
 
             if (needSep) pw.println();
             needSep = true;
@@ -10462,8 +10504,8 @@
         for (int i=list.size()-1; i>=0; i--) {
             ProcessRecord r = list.get(i).first;
             String oomAdj;
-            if (r.setAdj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
-                oomAdj = buildOomTag("bak", "  ", r.setAdj, ProcessList.HIDDEN_APP_MIN_ADJ);
+            if (r.setAdj >= ProcessList.CACHED_APP_MIN_ADJ) {
+                oomAdj = buildOomTag("cch", "  ", r.setAdj, ProcessList.CACHED_APP_MIN_ADJ);
             } else if (r.setAdj >= ProcessList.SERVICE_B_ADJ) {
                 oomAdj = buildOomTag("svcb ", null, r.setAdj, ProcessList.SERVICE_B_ADJ);
             } else if (r.setAdj >= ProcessList.PREVIOUS_APP_ADJ) {
@@ -10538,8 +10580,8 @@
                 pw.print(prefix);
                 pw.print("    ");
                 pw.print("oom: max="); pw.print(r.maxAdj);
-                pw.print(" hidden="); pw.print(r.hiddenAdj);
-                pw.print(" client="); pw.print(r.clientHiddenAdj);
+                pw.print(" cached="); pw.print(r.cachedAdj);
+                pw.print(" client="); pw.print(r.clientCachedAdj);
                 pw.print(" empty="); pw.print(r.emptyAdj);
                 pw.print(" curRaw="); pw.print(r.curRawAdj);
                 pw.print(" setRaw="); pw.print(r.setRawAdj);
@@ -10548,7 +10590,7 @@
                 pw.print(prefix);
                 pw.print("    ");
                 pw.print("keeping="); pw.print(r.keeping);
-                pw.print(" hidden="); pw.print(r.hidden);
+                pw.print(" cached="); pw.print(r.cached);
                 pw.print(" empty="); pw.print(r.empty);
                 pw.print(" hasAboveClient="); pw.println(r.hasAboveClient);
 
@@ -10760,13 +10802,13 @@
             ProcessList.SYSTEM_ADJ, ProcessList.PERSISTENT_PROC_ADJ, ProcessList.FOREGROUND_APP_ADJ,
             ProcessList.VISIBLE_APP_ADJ, ProcessList.PERCEPTIBLE_APP_ADJ, ProcessList.HEAVY_WEIGHT_APP_ADJ,
             ProcessList.BACKUP_APP_ADJ, ProcessList.SERVICE_ADJ, ProcessList.HOME_APP_ADJ,
-            ProcessList.PREVIOUS_APP_ADJ, ProcessList.SERVICE_B_ADJ, ProcessList.HIDDEN_APP_MAX_ADJ
+            ProcessList.PREVIOUS_APP_ADJ, ProcessList.SERVICE_B_ADJ, ProcessList.CACHED_APP_MAX_ADJ
     };
     static final String[] DUMP_MEM_OOM_LABEL = new String[] {
             "System", "Persistent", "Foreground",
             "Visible", "Perceptible", "Heavy Weight",
             "Backup", "A Services", "Home", "Previous",
-            "B Services", "Background"
+            "B Services", "Cached"
     };
 
     final void dumpApplicationMemoryUsage(FileDescriptor fd,
@@ -11034,6 +11076,13 @@
         return false;
     }
 
+    final void dumpProcessTracker(FileDescriptor fd, PrintWriter pw, String[] args) {
+        synchronized (this) {
+            pw.println("Process Stats:");
+            mProcessTracker.dumpLocked(fd, pw, args);
+        }
+    }
+
     private final boolean removeDyingProviderLocked(ProcessRecord proc,
             ContentProviderRecord cpr, boolean always) {
         final boolean inLaunching = mLaunchingProviders.contains(cpr);
@@ -11679,7 +11728,7 @@
     private final List getStickiesLocked(String action, IntentFilter filter,
             List cur, int userId) {
         final ContentResolver resolver = mContext.getContentResolver();
-        HashMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(userId);
+        ArrayMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(userId);
         if (stickies == null) {
             return cur;
         }
@@ -12187,7 +12236,7 @@
                 // But first, if this is not a broadcast to all users, then
                 // make sure it doesn't conflict with an existing broadcast to
                 // all users.
-                HashMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(
+                ArrayMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(
                         UserHandle.USER_ALL);
                 if (stickies != null) {
                     ArrayList<Intent> list = stickies.get(intent.getAction());
@@ -12204,9 +12253,9 @@
                     }
                 }
             }
-            HashMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(userId);
+            ArrayMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(userId);
             if (stickies == null) {
-                stickies = new HashMap<String, ArrayList<Intent>>();
+                stickies = new ArrayMap<String, ArrayList<Intent>>();
                 mStickyBroadcasts.put(userId, stickies);
             }
             ArrayList<Intent> list = stickies.get(intent.getAction());
@@ -12459,7 +12508,7 @@
                 Slog.w(TAG, msg);
                 throw new SecurityException(msg);
             }
-            HashMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(userId);
+            ArrayMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(userId);
             if (stickies != null) {
                 ArrayList<Intent> list = stickies.get(intent.getAction());
                 if (list != null) {
@@ -12952,18 +13001,18 @@
         return null;
     }
 
-    private final int computeOomAdjLocked(ProcessRecord app, int hiddenAdj, int clientHiddenAdj,
+    private final int computeOomAdjLocked(ProcessRecord app, int cachedAdj, int clientCachedAdj,
             int emptyAdj, ProcessRecord TOP_APP, boolean recursed, boolean doingAll) {
         if (mAdjSeq == app.adjSeq) {
             // This adjustment has already been computed.  If we are calling
             // from the top, we may have already computed our adjustment with
-            // an earlier hidden adjustment that isn't really for us... if
-            // so, use the new hidden adjustment.
-            if (!recursed && app.hidden) {
+            // an earlier cached adjustment that isn't really for us... if
+            // so, use the new cached adjustment.
+            if (!recursed && app.cached) {
                 if (app.hasActivities) {
-                    app.curAdj = app.curRawAdj = app.nonStoppingAdj = hiddenAdj;
+                    app.curAdj = app.curRawAdj = app.nonStoppingAdj = cachedAdj;
                 } else if (app.hasClientActivities) {
-                    app.curAdj = app.curRawAdj = app.nonStoppingAdj = clientHiddenAdj;
+                    app.curAdj = app.curRawAdj = app.nonStoppingAdj = clientCachedAdj;
                 } else {
                     app.curAdj = app.curRawAdj = app.nonStoppingAdj = emptyAdj;
                 }
@@ -12974,14 +13023,14 @@
         if (app.thread == null) {
             app.adjSeq = mAdjSeq;
             app.curSchedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
-            return (app.curAdj=app.curRawAdj=ProcessList.HIDDEN_APP_MAX_ADJ);
+            return (app.curAdj=app.curRawAdj=ProcessList.CACHED_APP_MAX_ADJ);
         }
 
         app.adjTypeCode = ActivityManager.RunningAppProcessInfo.REASON_UNKNOWN;
         app.adjSource = null;
         app.adjTarget = null;
         app.empty = false;
-        app.hidden = false;
+        app.cached = false;
         app.hasClientActivities = false;
 
         final int activitiesSize = app.activities.size();
@@ -13059,12 +13108,12 @@
             schedGroup = Process.THREAD_GROUP_DEFAULT;
             app.adjType = "exec-service";
         } else {
-            // Assume process is hidden (has activities); we will correct
+            // Assume process is cached (has activities); we will correct
             // later if this is not the case.
-            adj = hiddenAdj;
+            adj = cachedAdj;
             schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
-            app.hidden = true;
-            app.adjType = "bg-act";
+            app.cached = true;
+            app.adjType = "cch-act";
         }
 
         boolean hasStoppingActivities = false;
@@ -13080,7 +13129,7 @@
                         app.adjType = "visible";
                     }
                     schedGroup = Process.THREAD_GROUP_DEFAULT;
-                    app.hidden = false;
+                    app.cached = false;
                     app.hasActivities = true;
                     foregroundActivities = true;
                     break;
@@ -13089,13 +13138,13 @@
                         adj = ProcessList.PERCEPTIBLE_APP_ADJ;
                         app.adjType = "pausing";
                     }
-                    app.hidden = false;
+                    app.cached = false;
                     foregroundActivities = true;
                 } else if (r.state == ActivityState.STOPPING) {
                     // We will apply the actual adjustment later, because
                     // we want to allow this process to immediately go through
                     // any memory trimming that is in effect.
-                    app.hidden = false;
+                    app.cached = false;
                     foregroundActivities = true;
                     hasStoppingActivities = true;
                 }
@@ -13105,16 +13154,16 @@
             }
         }
 
-        if (adj == hiddenAdj && !app.hasActivities) {
+        if (adj == cachedAdj && !app.hasActivities) {
             if (app.hasClientActivities) {
-                adj = clientHiddenAdj;
-                app.adjType = "bg-client-act";
+                adj = clientCachedAdj;
+                app.adjType = "cch-client-act";
             } else {
                 // Whoops, this process is completely empty as far as we know
                 // at this point.
                 adj = emptyAdj;
                 app.empty = true;
-                app.adjType = "bg-empty";
+                app.adjType = "cch-empty";
             }
         }
 
@@ -13122,13 +13171,13 @@
             if (app.foregroundServices) {
                 // The user is aware of this app, so make it visible.
                 adj = ProcessList.PERCEPTIBLE_APP_ADJ;
-                app.hidden = false;
+                app.cached = false;
                 app.adjType = "fg-service";
                 schedGroup = Process.THREAD_GROUP_DEFAULT;
             } else if (app.forcingToForeground != null) {
                 // The user is aware of this app, so make it visible.
                 adj = ProcessList.PERCEPTIBLE_APP_ADJ;
-                app.hidden = false;
+                app.cached = false;
                 app.adjType = "force-fg";
                 app.adjSource = app.forcingToForeground;
                 schedGroup = Process.THREAD_GROUP_DEFAULT;
@@ -13143,7 +13192,7 @@
             // We don't want to kill the current heavy-weight process.
             adj = ProcessList.HEAVY_WEIGHT_APP_ADJ;
             schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
-            app.hidden = false;
+            app.cached = false;
             app.adjType = "heavy";
         }
 
@@ -13152,7 +13201,7 @@
             // home app, so we don't want to let it go into the background.
             adj = ProcessList.HOME_APP_ADJ;
             schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
-            app.hidden = false;
+            app.cached = false;
             app.adjType = "home";
         }
 
@@ -13163,7 +13212,7 @@
             // a good experience around switching between two apps.
             adj = ProcessList.PREVIOUS_APP_ADJ;
             schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
-            app.hidden = false;
+            app.cached = false;
             app.adjType = "previous";
         }
 
@@ -13183,7 +13232,7 @@
                 if (DEBUG_BACKUP) Slog.v(TAG, "oom BACKUP_APP_ADJ for " + app);
                 adj = ProcessList.BACKUP_APP_ADJ;
                 app.adjType = "backup";
-                app.hidden = false;
+                app.cached = false;
             }
         }
 
@@ -13202,7 +13251,7 @@
                         // UI stuff.  We'll tag it with a label just to help
                         // debug and understand what is going on.
                         if (adj > ProcessList.SERVICE_ADJ) {
-                            app.adjType = "started-bg-ui-services";
+                            app.adjType = "cch-started-ui-services";
                         }
                     } else {
                         if (now < (s.lastActivity + ActiveServices.MAX_SERVICE_INACTIVITY)) {
@@ -13212,14 +13261,14 @@
                             if (adj > ProcessList.SERVICE_ADJ) {
                                 adj = ProcessList.SERVICE_ADJ;
                                 app.adjType = "started-services";
-                                app.hidden = false;
+                                app.cached = false;
                             }
                         }
                         // If we have let the service slide into the background
                         // state, still have some text describing what it is doing
                         // even though the service no longer has an impact.
                         if (adj > ProcessList.SERVICE_ADJ) {
-                            app.adjType = "started-bg-services";
+                            app.adjType = "cch-started-services";
                         }
                     }
                     // Don't kill this process because it is doing work; it
@@ -13245,20 +13294,20 @@
                         if ((cr.flags&Context.BIND_WAIVE_PRIORITY) == 0) {
                             ProcessRecord client = cr.binding.client;
                             int clientAdj = adj;
-                            int myHiddenAdj = hiddenAdj;
-                            if (myHiddenAdj > client.hiddenAdj) {
-                                if (client.hiddenAdj >= ProcessList.VISIBLE_APP_ADJ) {
-                                    myHiddenAdj = client.hiddenAdj;
+                            int myCachedAdj = cachedAdj;
+                            if (myCachedAdj > client.cachedAdj) {
+                                if (client.cachedAdj >= ProcessList.VISIBLE_APP_ADJ) {
+                                    myCachedAdj = client.cachedAdj;
                                 } else {
-                                    myHiddenAdj = ProcessList.VISIBLE_APP_ADJ;
+                                    myCachedAdj = ProcessList.VISIBLE_APP_ADJ;
                                 }
                             }
-                            int myClientHiddenAdj = clientHiddenAdj;
-                            if (myClientHiddenAdj > client.clientHiddenAdj) {
-                                if (client.clientHiddenAdj >= ProcessList.VISIBLE_APP_ADJ) {
-                                    myClientHiddenAdj = client.clientHiddenAdj;
+                            int myClientCachedAdj = clientCachedAdj;
+                            if (myClientCachedAdj > client.clientCachedAdj) {
+                                if (client.clientCachedAdj >= ProcessList.VISIBLE_APP_ADJ) {
+                                    myClientCachedAdj = client.clientCachedAdj;
                                 } else {
-                                    myClientHiddenAdj = ProcessList.VISIBLE_APP_ADJ;
+                                    myClientCachedAdj = ProcessList.VISIBLE_APP_ADJ;
                                 }
                             }
                             int myEmptyAdj = emptyAdj;
@@ -13269,8 +13318,8 @@
                                     myEmptyAdj = ProcessList.VISIBLE_APP_ADJ;
                                 }
                             }
-                            clientAdj = computeOomAdjLocked(client, myHiddenAdj,
-                                    myClientHiddenAdj, myEmptyAdj, TOP_APP, true, doingAll);
+                            clientAdj = computeOomAdjLocked(client, myCachedAdj,
+                                    myClientCachedAdj, myEmptyAdj, TOP_APP, true, doingAll);
                             String adjType = null;
                             if ((cr.flags&Context.BIND_ALLOW_OOM_MANAGEMENT) != 0) {
                                 // Not doing bind OOM management, so treat
@@ -13281,9 +13330,9 @@
                                     // UI stuff.  We'll tag it with a label just to help
                                     // debug and understand what is going on.
                                     if (adj > clientAdj) {
-                                        adjType = "bound-bg-ui-services";
+                                        adjType = "cch-bound-ui-services";
                                     }
-                                    app.hidden = false;
+                                    app.cached = false;
                                     clientAdj = adj;
                                 } else {
                                     if (now >= (s.lastActivity
@@ -13294,7 +13343,7 @@
                                         // it around.  We'll also tag it with a label just
                                         // to help debug and undertand what is going on.
                                         if (adj > clientAdj) {
-                                            adjType = "bound-bg-services";
+                                            adjType = "cch-bound-services";
                                         }
                                         clientAdj = adj;
                                     }
@@ -13305,7 +13354,7 @@
                                     // created, then we want to try to better follow
                                     // its memory management semantics for activities.
                                     // That is, if it is sitting in the background
-                                    // LRU list as a hidden process (with activities),
+                                    // LRU list as a cached process (with activities),
                                     // we don't want the service it is connected to
                                     // to go into the empty LRU and quickly get killed,
                                     // because I'll we'll do is just end up restarting
@@ -13323,7 +13372,7 @@
                                 // memory.
                                 if (app.hasShownUi && app != mHomeProcess
                                         && clientAdj > ProcessList.PERCEPTIBLE_APP_ADJ) {
-                                    adjType = "bound-bg-ui-services";
+                                    adjType = "cch-bound-ui-services";
                                 } else {
                                     if ((cr.flags&(Context.BIND_ABOVE_CLIENT
                                             |Context.BIND_IMPORTANT)) != 0) {
@@ -13340,8 +13389,8 @@
                                             adj = ProcessList.VISIBLE_APP_ADJ;
                                         }
                                     }
-                                    if (!client.hidden) {
-                                        app.hidden = false;
+                                    if (!client.cached) {
+                                        app.cached = false;
                                     }
                                     if (client.keeping) {
                                         app.keeping = true;
@@ -13372,7 +13421,7 @@
                                 if ((cr.flags&Context.BIND_NOT_FOREGROUND) == 0) {
                                     schedGroup = Process.THREAD_GROUP_DEFAULT;
                                 }
-                                app.hidden = false;
+                                app.cached = false;
                                 app.adjType = "service";
                                 app.adjTypeCode = ActivityManager.RunningAppProcessInfo
                                         .REASON_SERVICE_IN_USE;
@@ -13390,10 +13439,10 @@
             // application from running.  By default we put the process in
             // with the rest of the background processes; as we scan through
             // its services we may bump it up from there.
-            if (adj > hiddenAdj) {
-                adj = hiddenAdj;
-                app.hidden = false;
-                app.adjType = "bg-services";
+            if (adj > cachedAdj) {
+                adj = cachedAdj;
+                app.cached = false;
+                app.adjType = "cch-services";
             }
         }
 
@@ -13412,20 +13461,20 @@
                     // Being our own client is not interesting.
                     continue;
                 }
-                int myHiddenAdj = hiddenAdj;
-                if (myHiddenAdj > client.hiddenAdj) {
-                    if (client.hiddenAdj > ProcessList.FOREGROUND_APP_ADJ) {
-                        myHiddenAdj = client.hiddenAdj;
+                int myCachedAdj = cachedAdj;
+                if (myCachedAdj > client.cachedAdj) {
+                    if (client.cachedAdj > ProcessList.FOREGROUND_APP_ADJ) {
+                        myCachedAdj = client.cachedAdj;
                     } else {
-                        myHiddenAdj = ProcessList.FOREGROUND_APP_ADJ;
+                        myCachedAdj = ProcessList.FOREGROUND_APP_ADJ;
                     }
                 }
-                int myClientHiddenAdj = clientHiddenAdj;
-                if (myClientHiddenAdj > client.clientHiddenAdj) {
-                    if (client.clientHiddenAdj >= ProcessList.FOREGROUND_APP_ADJ) {
-                        myClientHiddenAdj = client.clientHiddenAdj;
+                int myClientCachedAdj = clientCachedAdj;
+                if (myClientCachedAdj > client.clientCachedAdj) {
+                    if (client.clientCachedAdj >= ProcessList.FOREGROUND_APP_ADJ) {
+                        myClientCachedAdj = client.clientCachedAdj;
                     } else {
-                        myClientHiddenAdj = ProcessList.FOREGROUND_APP_ADJ;
+                        myClientCachedAdj = ProcessList.FOREGROUND_APP_ADJ;
                     }
                 }
                 int myEmptyAdj = emptyAdj;
@@ -13436,19 +13485,19 @@
                         myEmptyAdj = ProcessList.FOREGROUND_APP_ADJ;
                     }
                 }
-                int clientAdj = computeOomAdjLocked(client, myHiddenAdj,
-                        myClientHiddenAdj, myEmptyAdj, TOP_APP, true, doingAll);
+                int clientAdj = computeOomAdjLocked(client, myCachedAdj,
+                        myClientCachedAdj, myEmptyAdj, TOP_APP, true, doingAll);
                 if (adj > clientAdj) {
                     if (app.hasShownUi && app != mHomeProcess
                             && clientAdj > ProcessList.PERCEPTIBLE_APP_ADJ) {
-                        app.adjType = "bg-ui-provider";
+                        app.adjType = "cch-ui-provider";
                     } else {
                         adj = clientAdj > ProcessList.FOREGROUND_APP_ADJ
                                 ? clientAdj : ProcessList.FOREGROUND_APP_ADJ;
                         app.adjType = "provider";
                     }
-                    if (!client.hidden) {
-                        app.hidden = false;
+                    if (!client.cached) {
+                        app.cached = false;
                     }
                     if (client.keeping) {
                         app.keeping = true;
@@ -13470,7 +13519,7 @@
                 if (adj > ProcessList.FOREGROUND_APP_ADJ) {
                     adj = ProcessList.FOREGROUND_APP_ADJ;
                     schedGroup = Process.THREAD_GROUP_DEFAULT;
-                    app.hidden = false;
+                    app.cached = false;
                     app.keeping = true;
                     app.adjType = "provider";
                     app.adjTarget = cpr.name;
@@ -13510,7 +13559,7 @@
                 schedGroup = Process.THREAD_GROUP_DEFAULT;
             }
         }
-        if (adj < ProcessList.HIDDEN_APP_MIN_ADJ) {
+        if (adj < ProcessList.CACHED_APP_MIN_ADJ) {
             app.keeping = true;
         }
 
@@ -13526,9 +13575,9 @@
                 adj = ProcessList.VISIBLE_APP_ADJ;
             } else if (adj < ProcessList.PERCEPTIBLE_APP_ADJ) {
                 adj = ProcessList.PERCEPTIBLE_APP_ADJ;
-            } else if (adj < ProcessList.HIDDEN_APP_MIN_ADJ) {
-                adj = ProcessList.HIDDEN_APP_MIN_ADJ;
-            } else if (adj < ProcessList.HIDDEN_APP_MAX_ADJ) {
+            } else if (adj < ProcessList.CACHED_APP_MIN_ADJ) {
+                adj = ProcessList.CACHED_APP_MIN_ADJ;
+            } else if (adj < ProcessList.CACHED_APP_MAX_ADJ) {
                 adj++;
             }
         }
@@ -13542,7 +13591,7 @@
                 // interesting in this process then we will push it to the
                 // background importance.
                 importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
-            } else if (adj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
+            } else if (adj >= ProcessList.CACHED_APP_MIN_ADJ) {
                 importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
             } else if (adj >= ProcessList.SERVICE_B_ADJ) {
                 importance =  ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE;
@@ -13848,10 +13897,10 @@
         }
     }
 
-    private final boolean updateOomAdjLocked(ProcessRecord app, int hiddenAdj,
-            int clientHiddenAdj, int emptyAdj, ProcessRecord TOP_APP, boolean doingAll) {
-        app.hiddenAdj = hiddenAdj;
-        app.clientHiddenAdj = clientHiddenAdj;
+    private final boolean updateOomAdjLocked(ProcessRecord app, int cachedAdj,
+            int clientCachedAdj, int emptyAdj, ProcessRecord TOP_APP, boolean doingAll) {
+        app.cachedAdj = cachedAdj;
+        app.clientCachedAdj = clientCachedAdj;
         app.emptyAdj = emptyAdj;
 
         if (app.thread == null) {
@@ -13862,7 +13911,7 @@
 
         boolean success = true;
 
-        computeOomAdjLocked(app, hiddenAdj, clientHiddenAdj, emptyAdj, TOP_APP, false, doingAll);
+        computeOomAdjLocked(app, cachedAdj, clientCachedAdj, emptyAdj, TOP_APP, false, doingAll);
 
         if (app.curRawAdj != app.setRawAdj) {
             if (wasKeeping && !app.keeping) {
@@ -13886,6 +13935,10 @@
                     TAG, "Set " + app.pid + " " + app.processName +
                     " adj " + app.curAdj + ": " + app.adjType);
                 app.setAdj = app.curAdj;
+                if (app.setAdj >= ProcessList.FOREGROUND_APP_ADJ) {
+                    app.tracker.setState(mProcessList.adjToTrackedState(app.setAdj),
+                            SystemClock.uptimeMillis());
+                }
             } else {
                 success = false;
                 Slog.w(TAG, "Failed setting oom adj of " + app + " to " + app.curAdj);
@@ -13937,17 +13990,17 @@
         final ActivityRecord TOP_ACT = resumedAppLocked();
         final ProcessRecord TOP_APP = TOP_ACT != null ? TOP_ACT.app : null;
         int curAdj = app.curAdj;
-        final boolean wasHidden = curAdj >= ProcessList.HIDDEN_APP_MIN_ADJ
-            && curAdj <= ProcessList.HIDDEN_APP_MAX_ADJ;
+        final boolean wasCached = curAdj >= ProcessList.CACHED_APP_MIN_ADJ
+            && curAdj <= ProcessList.CACHED_APP_MAX_ADJ;
 
         mAdjSeq++;
 
-        boolean success = updateOomAdjLocked(app, app.hiddenAdj, app.clientHiddenAdj,
+        boolean success = updateOomAdjLocked(app, app.cachedAdj, app.clientCachedAdj,
                 app.emptyAdj, TOP_APP, false);
-        final boolean nowHidden = app.curAdj >= ProcessList.HIDDEN_APP_MIN_ADJ
-            && app.curAdj <= ProcessList.HIDDEN_APP_MAX_ADJ;
-        if (nowHidden != wasHidden) {
-            // Changed to/from hidden state, so apps after it in the LRU
+        final boolean nowCached = app.curAdj >= ProcessList.CACHED_APP_MIN_ADJ
+            && app.curAdj <= ProcessList.CACHED_APP_MAX_ADJ;
+        if (nowCached != wasCached) {
+            // Changed to/from cached state, so apps after it in the LRU
             // list may also be changed.
             updateOomAdjLocked();
         }
@@ -13969,100 +14022,100 @@
         mNewNumServiceProcs = 0;
 
         final int emptyProcessLimit;
-        final int hiddenProcessLimit;
+        final int cachedProcessLimit;
         if (mProcessLimit <= 0) {
-            emptyProcessLimit = hiddenProcessLimit = 0;
+            emptyProcessLimit = cachedProcessLimit = 0;
         } else if (mProcessLimit == 1) {
             emptyProcessLimit = 1;
-            hiddenProcessLimit = 0;
+            cachedProcessLimit = 0;
         } else {
             emptyProcessLimit = (mProcessLimit*2)/3;
-            hiddenProcessLimit = mProcessLimit - emptyProcessLimit;
+            cachedProcessLimit = mProcessLimit - emptyProcessLimit;
         }
 
         // Let's determine how many processes we have running vs.
         // how many slots we have for background processes; we may want
         // to put multiple processes in a slot of there are enough of
         // them.
-        int numSlots = (ProcessList.HIDDEN_APP_MAX_ADJ
-                - ProcessList.HIDDEN_APP_MIN_ADJ + 1) / 2;
-        int numEmptyProcs = mLruProcesses.size()-mNumNonHiddenProcs-mNumHiddenProcs;
-        if (numEmptyProcs > hiddenProcessLimit) {
-            // If there are more empty processes than our limit on hidden
-            // processes, then use the hidden process limit for the factor.
+        int numSlots = (ProcessList.CACHED_APP_MAX_ADJ
+                - ProcessList.CACHED_APP_MIN_ADJ + 1) / 2;
+        int numEmptyProcs = mLruProcesses.size()- mNumNonCachedProcs - mNumCachedProcs;
+        if (numEmptyProcs > cachedProcessLimit) {
+            // If there are more empty processes than our limit on cached
+            // processes, then use the cached process limit for the factor.
             // This ensures that the really old empty processes get pushed
             // down to the bottom, so if we are running low on memory we will
-            // have a better chance at keeping around more hidden processes
+            // have a better chance at keeping around more cached processes
             // instead of a gazillion empty processes.
-            numEmptyProcs = hiddenProcessLimit;
+            numEmptyProcs = cachedProcessLimit;
         }
         int emptyFactor = numEmptyProcs/numSlots;
         if (emptyFactor < 1) emptyFactor = 1;
-        int hiddenFactor = (mNumHiddenProcs > 0 ? mNumHiddenProcs : 1)/numSlots;
-        if (hiddenFactor < 1) hiddenFactor = 1;
-        int stepHidden = 0;
+        int cachedFactor = (mNumCachedProcs > 0 ? mNumCachedProcs : 1)/numSlots;
+        if (cachedFactor < 1) cachedFactor = 1;
+        int stepCached = 0;
         int stepEmpty = 0;
-        int numHidden = 0;
+        int numCached = 0;
         int numEmpty = 0;
         int numTrimming = 0;
 
-        mNumNonHiddenProcs = 0;
-        mNumHiddenProcs = 0;
+        mNumNonCachedProcs = 0;
+        mNumCachedProcs = 0;
 
         // First update the OOM adjustment for each of the
         // application processes based on their current state.
         int i = mLruProcesses.size();
-        int curHiddenAdj = ProcessList.HIDDEN_APP_MIN_ADJ;
-        int nextHiddenAdj = curHiddenAdj+1;
-        int curEmptyAdj = ProcessList.HIDDEN_APP_MIN_ADJ;
+        int curCachedAdj = ProcessList.CACHED_APP_MIN_ADJ;
+        int nextCachedAdj = curCachedAdj+1;
+        int curEmptyAdj = ProcessList.CACHED_APP_MIN_ADJ;
         int nextEmptyAdj = curEmptyAdj+2;
-        int curClientHiddenAdj = curEmptyAdj;
+        int curClientCachedAdj = curEmptyAdj;
         while (i > 0) {
             i--;
             ProcessRecord app = mLruProcesses.get(i);
-            //Slog.i(TAG, "OOM " + app + ": cur hidden=" + curHiddenAdj);
-            updateOomAdjLocked(app, curHiddenAdj, curClientHiddenAdj, curEmptyAdj, TOP_APP, true);
+            //Slog.i(TAG, "OOM " + app + ": cur cached=" + curCachedAdj);
+            updateOomAdjLocked(app, curCachedAdj, curClientCachedAdj, curEmptyAdj, TOP_APP, true);
             if (!app.killedBackground) {
-                if (app.curRawAdj == curHiddenAdj && app.hasActivities) {
-                    // This process was assigned as a hidden process...  step the
-                    // hidden level.
-                    mNumHiddenProcs++;
-                    if (curHiddenAdj != nextHiddenAdj) {
-                        stepHidden++;
-                        if (stepHidden >= hiddenFactor) {
-                            stepHidden = 0;
-                            curHiddenAdj = nextHiddenAdj;
-                            nextHiddenAdj += 2;
-                            if (nextHiddenAdj > ProcessList.HIDDEN_APP_MAX_ADJ) {
-                                nextHiddenAdj = ProcessList.HIDDEN_APP_MAX_ADJ;
+                if (app.curRawAdj == curCachedAdj && app.hasActivities) {
+                    // This process was assigned as a cached process...  step the
+                    // cached level.
+                    mNumCachedProcs++;
+                    if (curCachedAdj != nextCachedAdj) {
+                        stepCached++;
+                        if (stepCached >= cachedFactor) {
+                            stepCached = 0;
+                            curCachedAdj = nextCachedAdj;
+                            nextCachedAdj += 2;
+                            if (nextCachedAdj > ProcessList.CACHED_APP_MAX_ADJ) {
+                                nextCachedAdj = ProcessList.CACHED_APP_MAX_ADJ;
                             }
-                            if (curClientHiddenAdj <= curHiddenAdj) {
-                                curClientHiddenAdj = curHiddenAdj + 1;
-                                if (curClientHiddenAdj > ProcessList.HIDDEN_APP_MAX_ADJ) {
-                                    curClientHiddenAdj = ProcessList.HIDDEN_APP_MAX_ADJ;
+                            if (curClientCachedAdj <= curCachedAdj) {
+                                curClientCachedAdj = curCachedAdj + 1;
+                                if (curClientCachedAdj > ProcessList.CACHED_APP_MAX_ADJ) {
+                                    curClientCachedAdj = ProcessList.CACHED_APP_MAX_ADJ;
                                 }
                             }
                         }
                     }
-                    numHidden++;
-                    if (numHidden > hiddenProcessLimit) {
+                    numCached++;
+                    if (numCached > cachedProcessLimit) {
                         Slog.i(TAG, "No longer want " + app.processName
-                                + " (pid " + app.pid + "): hidden #" + numHidden);
+                                + " (pid " + app.pid + "): cached #" + numCached);
                         EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                                 app.processName, app.setAdj, "too many background");
                         app.killedBackground = true;
                         Process.killProcessQuiet(app.pid);
                     }
-                } else if (app.curRawAdj == curHiddenAdj && app.hasClientActivities) {
+                } else if (app.curRawAdj == curCachedAdj && app.hasClientActivities) {
                     // This process has a client that has activities.  We will have
-                    // given it the current hidden adj; here we will just leave it
-                    // without stepping the hidden adj.
-                    curClientHiddenAdj++;
-                    if (curClientHiddenAdj > ProcessList.HIDDEN_APP_MAX_ADJ) {
-                        curClientHiddenAdj = ProcessList.HIDDEN_APP_MAX_ADJ;
+                    // given it the current cached adj; here we will just leave it
+                    // without stepping the cached adj.
+                    curClientCachedAdj++;
+                    if (curClientCachedAdj > ProcessList.CACHED_APP_MAX_ADJ) {
+                        curClientCachedAdj = ProcessList.CACHED_APP_MAX_ADJ;
                     }
                 } else {
-                    if (app.curRawAdj == curEmptyAdj || app.curRawAdj == curHiddenAdj) {
+                    if (app.curRawAdj == curEmptyAdj || app.curRawAdj == curCachedAdj) {
                         // This process was assigned as an empty process...  step the
                         // empty level.
                         if (curEmptyAdj != nextEmptyAdj) {
@@ -14071,15 +14124,15 @@
                                 stepEmpty = 0;
                                 curEmptyAdj = nextEmptyAdj;
                                 nextEmptyAdj += 2;
-                                if (nextEmptyAdj > ProcessList.HIDDEN_APP_MAX_ADJ) {
-                                    nextEmptyAdj = ProcessList.HIDDEN_APP_MAX_ADJ;
+                                if (nextEmptyAdj > ProcessList.CACHED_APP_MAX_ADJ) {
+                                    nextEmptyAdj = ProcessList.CACHED_APP_MAX_ADJ;
                                 }
                             }
                         }
-                    } else if (app.curRawAdj < ProcessList.HIDDEN_APP_MIN_ADJ) {
-                        mNumNonHiddenProcs++;
+                    } else if (app.curRawAdj < ProcessList.CACHED_APP_MIN_ADJ) {
+                        mNumNonCachedProcs++;
                     }
-                    if (app.curAdj >= ProcessList.HIDDEN_APP_MIN_ADJ
+                    if (app.curAdj >= ProcessList.CACHED_APP_MIN_ADJ
                             && !app.hasClientActivities) {
                         if (numEmpty > ProcessList.TRIM_EMPTY_APPS
                                 && app.lastActivityTime < oldTime) {
@@ -14134,9 +14187,9 @@
         // are managing to keep around is less than half the maximum we desire;
         // if we are keeping a good number around, we'll let them use whatever
         // memory they want.
-        if (numHidden <= ProcessList.TRIM_HIDDEN_APPS
+        if (numCached <= ProcessList.TRIM_CACHED_APPS
                 && numEmpty <= ProcessList.TRIM_EMPTY_APPS) {
-            final int numHiddenAndEmpty = numHidden + numEmpty;
+            final int numCachedAndEmpty = numCached + numEmpty;
             final int N = mLruProcesses.size();
             int factor = numTrimming/3;
             int minFactor = 2;
@@ -14145,9 +14198,9 @@
             if (factor < minFactor) factor = minFactor;
             int step = 0;
             int fgTrimLevel;
-            if (numHiddenAndEmpty <= ProcessList.TRIM_CRITICAL_THRESHOLD) {
+            if (numCachedAndEmpty <= ProcessList.TRIM_CRITICAL_THRESHOLD) {
                 fgTrimLevel = ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL;
-            } else if (numHiddenAndEmpty <= ProcessList.TRIM_LOW_THRESHOLD) {
+            } else if (numCachedAndEmpty <= ProcessList.TRIM_LOW_THRESHOLD) {
                 fgTrimLevel = ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW;
             } else {
                 fgTrimLevel = ComponentCallbacks2.TRIM_MEMORY_RUNNING_MODERATE;
@@ -14422,7 +14475,7 @@
         }
 
         if (proc == null) {
-            HashMap<String, SparseArray<ProcessRecord>> all
+            ArrayMap<String, SparseArray<ProcessRecord>> all
                     = mProcessNames.getMap();
             SparseArray<ProcessRecord> procs = all.get(process);
             if (procs != null && procs.size() > 0) {
diff --git a/services/java/com/android/server/am/ActivityResult.java b/services/java/com/android/server/am/ActivityResult.java
index 12eba34..6d5bdeb 100644
--- a/services/java/com/android/server/am/ActivityResult.java
+++ b/services/java/com/android/server/am/ActivityResult.java
@@ -23,7 +23,7 @@
 /**
  * Pending result information to send back to an activity.
  */
-class ActivityResult extends ResultInfo {
+final class ActivityResult extends ResultInfo {
     final ActivityRecord mFrom;
     
     public ActivityResult(ActivityRecord from, String resultWho,
diff --git a/services/java/com/android/server/am/ActivityStackSupervisor.java b/services/java/com/android/server/am/ActivityStackSupervisor.java
index b02a3e8..af61bfb 100644
--- a/services/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/java/com/android/server/am/ActivityStackSupervisor.java
@@ -80,7 +80,7 @@
 import java.util.ArrayList;
 import java.util.List;
 
-public class ActivityStackSupervisor {
+public final class ActivityStackSupervisor {
     static final boolean DEBUG = ActivityManagerService.DEBUG || false;
     static final boolean DEBUG_ADD_REMOVE = DEBUG || false;
     static final boolean DEBUG_APP = DEBUG || false;
diff --git a/services/java/com/android/server/am/AppBindRecord.java b/services/java/com/android/server/am/AppBindRecord.java
index f1c54fa..06265fd 100644
--- a/services/java/com/android/server/am/AppBindRecord.java
+++ b/services/java/com/android/server/am/AppBindRecord.java
@@ -23,7 +23,7 @@
 /**
  * An association between a service and one of its client applications.
  */
-class AppBindRecord {
+final class AppBindRecord {
     final ServiceRecord service;    // The running service.
     final IntentBindRecord intent;  // The intent we are bound to.
     final ProcessRecord client;     // Who has started/bound the service.
diff --git a/services/java/com/android/server/am/AppErrorDialog.java b/services/java/com/android/server/am/AppErrorDialog.java
index ffa1e92..bfc86b0 100644
--- a/services/java/com/android/server/am/AppErrorDialog.java
+++ b/services/java/com/android/server/am/AppErrorDialog.java
@@ -25,7 +25,7 @@
 import android.os.Message;
 import android.view.WindowManager;
 
-class AppErrorDialog extends BaseErrorDialog {
+final class AppErrorDialog extends BaseErrorDialog {
     private final ActivityManagerService mService;
     private final AppErrorResult mResult;
     private final ProcessRecord mProc;
diff --git a/services/java/com/android/server/am/AppErrorResult.java b/services/java/com/android/server/am/AppErrorResult.java
index ebfcfe2..c6a5720 100644
--- a/services/java/com/android/server/am/AppErrorResult.java
+++ b/services/java/com/android/server/am/AppErrorResult.java
@@ -16,8 +16,7 @@
 
 package com.android.server.am;
 
-
-class AppErrorResult {
+final class AppErrorResult {
     public void set(int res) {
         synchronized (this) {
             mHasResult = true;
diff --git a/services/java/com/android/server/am/AppNotRespondingDialog.java b/services/java/com/android/server/am/AppNotRespondingDialog.java
index af61c9b..b5e0715 100644
--- a/services/java/com/android/server/am/AppNotRespondingDialog.java
+++ b/services/java/com/android/server/am/AppNotRespondingDialog.java
@@ -28,7 +28,7 @@
 import android.util.Slog;
 import android.view.WindowManager;
 
-class AppNotRespondingDialog extends BaseErrorDialog {
+final class AppNotRespondingDialog extends BaseErrorDialog {
     private static final String TAG = "AppNotRespondingDialog";
 
     // Event 'what' codes
diff --git a/services/java/com/android/server/am/AppWaitingForDebuggerDialog.java b/services/java/com/android/server/am/AppWaitingForDebuggerDialog.java
index d08bb10..27865a8 100644
--- a/services/java/com/android/server/am/AppWaitingForDebuggerDialog.java
+++ b/services/java/com/android/server/am/AppWaitingForDebuggerDialog.java
@@ -22,7 +22,7 @@
 import android.os.Message;
 import android.view.WindowManager;
 
-class AppWaitingForDebuggerDialog extends BaseErrorDialog {
+final class AppWaitingForDebuggerDialog extends BaseErrorDialog {
     final ActivityManagerService mService;
     final ProcessRecord mProc;
     private CharSequence mAppName;
diff --git a/services/java/com/android/server/am/BackupRecord.java b/services/java/com/android/server/am/BackupRecord.java
index 7e73106..5fa7e6a 100644
--- a/services/java/com/android/server/am/BackupRecord.java
+++ b/services/java/com/android/server/am/BackupRecord.java
@@ -21,7 +21,7 @@
 import android.content.pm.ApplicationInfo;
 
 /** @hide */
-class BackupRecord {
+final class BackupRecord {
     // backup/restore modes
     public static final int BACKUP_NORMAL = 0;
     public static final int BACKUP_FULL = 1;
diff --git a/services/java/com/android/server/am/BroadcastFilter.java b/services/java/com/android/server/am/BroadcastFilter.java
index c631b6e..986b8ea 100644
--- a/services/java/com/android/server/am/BroadcastFilter.java
+++ b/services/java/com/android/server/am/BroadcastFilter.java
@@ -22,7 +22,7 @@
 
 import java.io.PrintWriter;
 
-class BroadcastFilter extends IntentFilter {
+final class BroadcastFilter extends IntentFilter {
     // Back-pointer to the list this filter is in.
     final ReceiverList receiverList;
     final String packageName;
diff --git a/services/java/com/android/server/am/BroadcastQueue.java b/services/java/com/android/server/am/BroadcastQueue.java
index ac7eb89..c7e6010 100644
--- a/services/java/com/android/server/am/BroadcastQueue.java
+++ b/services/java/com/android/server/am/BroadcastQueue.java
@@ -47,7 +47,7 @@
  * We keep two broadcast queues and associated bookkeeping, one for those at
  * foreground priority, and one for normal (background-priority) broadcasts.
  */
-public class BroadcastQueue {
+public final class BroadcastQueue {
     static final String TAG = "BroadcastQueue";
     static final String TAG_MU = ActivityManagerService.TAG_MU;
     static final boolean DEBUG_BROADCAST = ActivityManagerService.DEBUG_BROADCAST;
diff --git a/services/java/com/android/server/am/BroadcastRecord.java b/services/java/com/android/server/am/BroadcastRecord.java
index 83cc0ea..eb1df6e 100644
--- a/services/java/com/android/server/am/BroadcastRecord.java
+++ b/services/java/com/android/server/am/BroadcastRecord.java
@@ -36,7 +36,7 @@
 /**
  * An active intent broadcast.
  */
-class BroadcastRecord extends Binder {
+final class BroadcastRecord extends Binder {
     final Intent intent;    // the original intent that generated us
     final ComponentName targetComp; // original component name set on the intent
     final ProcessRecord callerApp; // process that sent this
diff --git a/services/java/com/android/server/am/CompatModeDialog.java b/services/java/com/android/server/am/CompatModeDialog.java
index 0442bda..202cc7c 100644
--- a/services/java/com/android/server/am/CompatModeDialog.java
+++ b/services/java/com/android/server/am/CompatModeDialog.java
@@ -28,7 +28,7 @@
 import android.widget.CompoundButton;
 import android.widget.Switch;
 
-public class CompatModeDialog extends Dialog {
+public final class CompatModeDialog extends Dialog {
     final ActivityManagerService mService;
     final ApplicationInfo mAppInfo;
 
diff --git a/services/java/com/android/server/am/CompatModePackages.java b/services/java/com/android/server/am/CompatModePackages.java
index e697f88..f56371c 100644
--- a/services/java/com/android/server/am/CompatModePackages.java
+++ b/services/java/com/android/server/am/CompatModePackages.java
@@ -25,7 +25,7 @@
 import android.util.Slog;
 import android.util.Xml;
 
-public class CompatModePackages {
+public final class CompatModePackages {
     private final String TAG = ActivityManagerService.TAG;
     private final boolean DEBUG_CONFIGURATION = ActivityManagerService.DEBUG_CONFIGURATION;
 
diff --git a/services/java/com/android/server/am/ConnectionRecord.java b/services/java/com/android/server/am/ConnectionRecord.java
index 4ed3c31..dd81493 100644
--- a/services/java/com/android/server/am/ConnectionRecord.java
+++ b/services/java/com/android/server/am/ConnectionRecord.java
@@ -25,7 +25,7 @@
 /**
  * Description of a single binding to a service.
  */
-class ConnectionRecord {
+final class ConnectionRecord {
     final AppBindRecord binding;    // The application/service binding.
     final ActivityRecord activity;   // If non-null, the owning activity.
     final IServiceConnection conn;  // The client connection.
diff --git a/services/java/com/android/server/am/ContentProviderConnection.java b/services/java/com/android/server/am/ContentProviderConnection.java
index 7f69b24..f2c9e2f 100644
--- a/services/java/com/android/server/am/ContentProviderConnection.java
+++ b/services/java/com/android/server/am/ContentProviderConnection.java
@@ -23,7 +23,7 @@
 /**
  * Represents a link between a content provider and client.
  */
-public class ContentProviderConnection extends Binder {
+public final class ContentProviderConnection extends Binder {
     public final ContentProviderRecord provider;
     public final ProcessRecord client;
     public final long createTime;
diff --git a/services/java/com/android/server/am/ContentProviderRecord.java b/services/java/com/android/server/am/ContentProviderRecord.java
index 8fb6a93..646b7d2 100644
--- a/services/java/com/android/server/am/ContentProviderRecord.java
+++ b/services/java/com/android/server/am/ContentProviderRecord.java
@@ -33,7 +33,7 @@
 import java.util.HashMap;
 import java.util.HashSet;
 
-class ContentProviderRecord {
+final class ContentProviderRecord {
     final ActivityManagerService service;
     public final ProviderInfo info;
     final int uid;
diff --git a/services/java/com/android/server/am/CoreSettingsObserver.java b/services/java/com/android/server/am/CoreSettingsObserver.java
index 585cf2b..10ea67c 100644
--- a/services/java/com/android/server/am/CoreSettingsObserver.java
+++ b/services/java/com/android/server/am/CoreSettingsObserver.java
@@ -33,7 +33,7 @@
  * disk I/O operations. Note: This class assumes that all core settings reside
  * in {@link Settings.Secure}.
  */
-class CoreSettingsObserver extends ContentObserver {
+final class CoreSettingsObserver extends ContentObserver {
     private static final String LOG_TAG = CoreSettingsObserver.class.getSimpleName();
 
     // mapping form property name to its type
diff --git a/services/java/com/android/server/am/DeviceMonitor.java b/services/java/com/android/server/am/DeviceMonitor.java
deleted file mode 100644
index 21e7252..0000000
--- a/services/java/com/android/server/am/DeviceMonitor.java
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.server.am;
-
-import android.os.SELinux;
-import android.util.Slog;
-
-import java.io.*;
-import java.util.Arrays;
-
-/**
- * Monitors device resources periodically for some period of time. Useful for
- * tracking down performance problems.
- */
-class DeviceMonitor {
-
-    private static final String LOG_TAG = DeviceMonitor.class.getName();
-
-    /** Number of samples to take. */
-    private static final int SAMPLE_COUNT = 10;
-
-    /** Time to wait in ms between samples. */
-    private static final int INTERVAL = 1000;
-
-    /** Time to wait in ms between samples. */
-    private static final int MAX_FILES = 30;
-
-    private final byte[] buffer = new byte[1024];
-
-    /** Is the monitor currently running? */
-    private boolean running = false;
-
-    private DeviceMonitor() {
-        new Thread() {
-            public void run() {
-                monitor();
-            }
-        }.start();
-    }
-
-    /**
-     * Loops continuously. Pauses until someone tells us to start monitoring.
-     */
-    @SuppressWarnings("InfiniteLoopStatement")
-    private void monitor() {
-        while (true) {
-            waitForStart();
-
-            purge();
-
-            for (int i = 0; i < SAMPLE_COUNT; i++) {
-                try {
-                    dump();
-                } catch (IOException e) {
-                    Slog.w(LOG_TAG, "Dump failed.", e);
-                }
-                pause();
-            }
-
-            stop();
-        }
-    }
-
-    private static final File PROC = new File("/proc");
-    private static final File BASE = new File("/data/anr/");
-    static {
-        if (!BASE.isDirectory() && !BASE.mkdirs()) {
-            throw new AssertionError("Couldn't create " + BASE + ".");
-        }
-        if (!SELinux.restorecon(BASE)) {
-            throw new AssertionError("Couldn't restorecon " + BASE + ".");
-        }
-    }
-
-    private static final File[] PATHS = {
-        new File(PROC, "zoneinfo"),
-        new File(PROC, "interrupts"),
-        new File(PROC, "meminfo"),
-        new File(PROC, "slabinfo"),
-    };
-
-
-    /**
-     * Deletes old files.
-     */
-    private void purge() {
-        File[] files = BASE.listFiles();
-        int count = files.length - MAX_FILES;
-        if (count > 0) {
-            Arrays.sort(files);
-            for (int i = 0; i < count; i++) {
-                if (!files[i].delete()) {
-                    Slog.w(LOG_TAG, "Couldn't delete " + files[i] + ".");
-                }
-            }
-        }
-    }
-
-    /**
-     * Dumps the current device stats to a new file.
-     */
-    private void dump() throws IOException {
-        OutputStream out = new FileOutputStream(
-                new File(BASE, String.valueOf(System.currentTimeMillis())));
-        try {
-            // Copy /proc/*/stat
-            for (File processDirectory : PROC.listFiles()) {
-                if (isProcessDirectory(processDirectory)) {
-                    dump(new File(processDirectory, "stat"), out);
-                }
-            }
-
-            // Copy other files.
-            for (File file : PATHS) {
-                dump(file, out);
-            }
-        } finally {
-            closeQuietly(out);
-        }
-    }
-
-    /**
-     * Returns true if the given file represents a process directory.
-     */
-    private static boolean isProcessDirectory(File file) {
-        try {
-            Integer.parseInt(file.getName());
-            return file.isDirectory();
-        } catch (NumberFormatException e) {
-            return false;
-        }
-    }
-
-    /**
-     * Copies from a file to an output stream.
-     */
-    private void dump(File from, OutputStream out) throws IOException {
-        writeHeader(from, out);
-        
-        FileInputStream in = null;
-        try {
-            in = new FileInputStream(from);
-            int count;
-            while ((count = in.read(buffer)) != -1) {
-                out.write(buffer, 0, count);
-            }
-        } finally {
-            closeQuietly(in);
-        }
-    }
-
-    /**
-     * Writes a header for the given file.
-     */
-    private static void writeHeader(File file, OutputStream out)
-            throws IOException {
-        String header = "*** " + file.toString() + "\n";
-        out.write(header.getBytes());
-    }
-
-    /**
-     * Closes the given resource. Logs exceptions.
-     * @param closeable
-     */
-    private static void closeQuietly(Closeable closeable) {
-        try {
-            if (closeable != null) {
-                closeable.close();
-            }
-        } catch (IOException e) {
-            Slog.w(LOG_TAG, e);
-        }
-    }
-
-    /**
-     * Pauses momentarily before we start the next dump.
-     */
-    private void pause() {
-        try {
-            Thread.sleep(INTERVAL);
-        } catch (InterruptedException e) { /* ignore */ }
-    }
-
-    /**
-     * Stops dumping.
-     */
-    private synchronized void stop() {
-        running = false;        
-    }
-
-    /**
-     * Waits until someone starts us.
-     */
-    private synchronized void waitForStart() {
-        while (!running) {
-            try {
-                wait();
-            } catch (InterruptedException e) { /* ignore */ }
-        }
-    }
-
-    /**
-     * Instructs the monitoring to start if it hasn't already.
-     */
-    private synchronized void startMonitoring() {
-        if (!running) {
-            running = true;
-            notifyAll();
-        }
-    }
-
-    private static DeviceMonitor instance = new DeviceMonitor();
-
-    /**
-     * Starts monitoring if it hasn't started already.
-     */
-    static void start() {
-        instance.startMonitoring();
-    }
-}
diff --git a/services/java/com/android/server/am/FactoryErrorDialog.java b/services/java/com/android/server/am/FactoryErrorDialog.java
index 0ffb588..f4632c1 100644
--- a/services/java/com/android/server/am/FactoryErrorDialog.java
+++ b/services/java/com/android/server/am/FactoryErrorDialog.java
@@ -22,7 +22,7 @@
 import android.os.Message;
 import android.view.WindowManager;
 
-class FactoryErrorDialog extends BaseErrorDialog {
+final class FactoryErrorDialog extends BaseErrorDialog {
     public FactoryErrorDialog(Context context, CharSequence msg) {
         super(context);
         setCancelable(false);
diff --git a/services/java/com/android/server/am/IntentBindRecord.java b/services/java/com/android/server/am/IntentBindRecord.java
index 0a92964..6c84b9f 100644
--- a/services/java/com/android/server/am/IntentBindRecord.java
+++ b/services/java/com/android/server/am/IntentBindRecord.java
@@ -27,7 +27,7 @@
 /**
  * A particular Intent that has been bound to a Service.
  */
-class IntentBindRecord {
+final class IntentBindRecord {
     /** The running service. */
     final ServiceRecord service;
     /** The intent that is bound.*/
diff --git a/services/java/com/android/server/am/LaunchWarningWindow.java b/services/java/com/android/server/am/LaunchWarningWindow.java
index cb2b7bb..30c3066 100644
--- a/services/java/com/android/server/am/LaunchWarningWindow.java
+++ b/services/java/com/android/server/am/LaunchWarningWindow.java
@@ -26,7 +26,7 @@
 import android.widget.ImageView;
 import android.widget.TextView;
 
-public class LaunchWarningWindow extends Dialog {
+public final class LaunchWarningWindow extends Dialog {
     public LaunchWarningWindow(Context context, ActivityRecord cur, ActivityRecord next) {
         super(context, R.style.Theme_Toast);
 
diff --git a/services/java/com/android/server/am/NativeCrashListener.java b/services/java/com/android/server/am/NativeCrashListener.java
index a9454bd..307ab03 100644
--- a/services/java/com/android/server/am/NativeCrashListener.java
+++ b/services/java/com/android/server/am/NativeCrashListener.java
@@ -40,7 +40,7 @@
  *
  * Note that this component runs in a separate thread.
  */
-class NativeCrashListener extends Thread {
+final class NativeCrashListener extends Thread {
     static final String TAG = "NativeCrashListener";
     static final boolean DEBUG = false;
     static final boolean MORE_DEBUG = DEBUG && false;
diff --git a/services/java/com/android/server/am/PendingIntentRecord.java b/services/java/com/android/server/am/PendingIntentRecord.java
index 28593fe..17f24a9 100644
--- a/services/java/com/android/server/am/PendingIntentRecord.java
+++ b/services/java/com/android/server/am/PendingIntentRecord.java
@@ -31,7 +31,7 @@
 import java.io.PrintWriter;
 import java.lang.ref.WeakReference;
 
-class PendingIntentRecord extends IIntentSender.Stub {
+final class PendingIntentRecord extends IIntentSender.Stub {
     final ActivityManagerService owner;
     final Key key;
     final int uid;
diff --git a/services/java/com/android/server/am/PendingThumbnailsRecord.java b/services/java/com/android/server/am/PendingThumbnailsRecord.java
index c460791..e4eb4d0 100644
--- a/services/java/com/android/server/am/PendingThumbnailsRecord.java
+++ b/services/java/com/android/server/am/PendingThumbnailsRecord.java
@@ -24,7 +24,7 @@
  * This class keeps track of calls to getTasks() that are still
  * waiting for thumbnail images.
  */
-class PendingThumbnailsRecord
+final class PendingThumbnailsRecord
 {
     final IThumbnailReceiver receiver;   // who is waiting.
     final HashSet<ActivityRecord> pendingRecords; // HistoryRecord objects we still wait for.
diff --git a/services/java/com/android/server/am/ProcessList.java b/services/java/com/android/server/am/ProcessList.java
index 1a635a9..e937d35 100644
--- a/services/java/com/android/server/am/ProcessList.java
+++ b/services/java/com/android/server/am/ProcessList.java
@@ -29,7 +29,7 @@
 /**
  * Activity manager code dealing with processes.
  */
-class ProcessList {
+final class ProcessList {
     // The minimum time we allow between crashes, for us to consider this
     // application to be bad and stop and its services and reject broadcasts.
     static final int MIN_CRASH_INTERVAL = 60*1000;
@@ -38,8 +38,8 @@
 
     // This is a process only hosting activities that are not visible,
     // so it can be killed without any disruption.
-    static final int HIDDEN_APP_MAX_ADJ = 15;
-    static int HIDDEN_APP_MIN_ADJ = 9;
+    static final int CACHED_APP_MAX_ADJ = 15;
+    static int CACHED_APP_MIN_ADJ = 9;
 
     // The B list of SERVICE_ADJ -- these are the old and decrepit
     // services that aren't as shiny and interesting as the ones in the A list.
@@ -94,37 +94,37 @@
     // Memory pages are 4K.
     static final int PAGE_SIZE = 4*1024;
 
-    // The minimum number of hidden apps we want to be able to keep around,
+    // The minimum number of cached apps we want to be able to keep around,
     // without empty apps being able to push them out of memory.
-    static final int MIN_HIDDEN_APPS = 2;
+    static final int MIN_CACHED_APPS = 2;
 
-    // The maximum number of hidden processes we will keep around before
+    // The maximum number of cached processes we will keep around before
     // killing them; this is just a control to not let us go too crazy with
     // keeping around processes on devices with large amounts of RAM.
-    static final int MAX_HIDDEN_APPS = 24;
+    static final int MAX_CACHED_APPS = 24;
 
     // We allow empty processes to stick around for at most 30 minutes.
     static final long MAX_EMPTY_TIME = 30*60*1000;
 
-    // The number of hidden at which we don't consider it necessary to do
+    // The number of cached at which we don't consider it necessary to do
     // memory trimming.
-    static final int TRIM_HIDDEN_APPS = 3;
+    static final int TRIM_CACHED_APPS = 3;
 
     // The number of empty apps at which we don't consider it necessary to do
     // memory trimming.
     static final int TRIM_EMPTY_APPS = 3;
 
-    // Threshold of number of hidden+empty where we consider memory critical.
+    // Threshold of number of cached+empty where we consider memory critical.
     static final int TRIM_CRITICAL_THRESHOLD = 3;
 
-    // Threshold of number of hidden+empty where we consider memory critical.
+    // Threshold of number of cached+empty where we consider memory critical.
     static final int TRIM_LOW_THRESHOLD = 5;
 
-    // We put empty content processes after any hidden processes that have
+    // We put empty content processes after any cached processes that have
     // been idle for less than 15 seconds.
     static final long CONTENT_APP_IDLE_OFFSET = 15*1000;
 
-    // We put empty content processes after any hidden processes that have
+    // We put empty content processes after any cached processes that have
     // been idle for less than 120 seconds.
     static final long EMPTY_APP_IDLE_OFFSET = 120*1000;
 
@@ -133,7 +133,7 @@
     // can't give it a different value for every possible kind of process.
     private final int[] mOomAdj = new int[] {
             FOREGROUND_APP_ADJ, VISIBLE_APP_ADJ, PERCEPTIBLE_APP_ADJ,
-            BACKUP_APP_ADJ, HIDDEN_APP_MIN_ADJ, HIDDEN_APP_MAX_ADJ
+            BACKUP_APP_ADJ, CACHED_APP_MIN_ADJ, CACHED_APP_MAX_ADJ
     };
     // These are the low-end OOM level limits.  This is appropriate for an
     // HVGA or smaller phone with less than 512MB.  Values are in KB.
@@ -154,11 +154,34 @@
 
     private boolean mHaveDisplaySize;
 
+    private final int[] mAdjToTrackedState = new int[CACHED_APP_MAX_ADJ+1];
+
     ProcessList() {
         MemInfoReader minfo = new MemInfoReader();
         minfo.readMemInfo();
         mTotalMemMb = minfo.getTotalSize()/(1024*1024);
         updateOomLevels(0, 0, false);
+        for (int i=0; i<=CACHED_APP_MAX_ADJ; i++) {
+            if (i <= FOREGROUND_APP_ADJ) {
+                mAdjToTrackedState[i] = ProcessTracker.STATE_FOREGROUND;
+            } else if (i <= VISIBLE_APP_ADJ) {
+                mAdjToTrackedState[i] = ProcessTracker.STATE_VISIBLE;
+            } else if (i <= PERCEPTIBLE_APP_ADJ) {
+                mAdjToTrackedState[i] = ProcessTracker.STATE_PERCEPTIBLE;
+            } else if (i <= BACKUP_APP_ADJ) {
+                mAdjToTrackedState[i] = ProcessTracker.STATE_BACKUP;
+            } else if (i <= SERVICE_ADJ) {
+                mAdjToTrackedState[i] = ProcessTracker.STATE_SERVICE;
+            } else if (i <= HOME_APP_ADJ) {
+                mAdjToTrackedState[i] = ProcessTracker.STATE_HOME;
+            } else if (i <= PREVIOUS_APP_ADJ) {
+                mAdjToTrackedState[i] = ProcessTracker.STATE_PREVIOUS;
+            } else if (i <= SERVICE_B_ADJ) {
+                mAdjToTrackedState[i] = ProcessTracker.STATE_SERVICE;
+            } else {
+                mAdjToTrackedState[i] = ProcessTracker.STATE_CACHED;
+            }
+        }
     }
 
     void applyDisplaySize(WindowManagerService wm) {
@@ -220,6 +243,10 @@
         return mOomMinFree[mOomAdj.length-1] * 1024;
     }
 
+    int adjToTrackedState(int adj) {
+        return mAdjToTrackedState[adj];
+    }
+
     private void writeFile(String path, String data) {
         FileOutputStream fos = null;
         try {
diff --git a/services/java/com/android/server/am/ProcessRecord.java b/services/java/com/android/server/am/ProcessRecord.java
index 3a4a34c..6cae67c 100644
--- a/services/java/com/android/server/am/ProcessRecord.java
+++ b/services/java/com/android/server/am/ProcessRecord.java
@@ -44,13 +44,14 @@
  * Full information about a particular process that
  * is currently running.
  */
-class ProcessRecord {
+final class ProcessRecord {
     final BatteryStatsImpl.Uid.Proc batteryStats; // where to collect runtime statistics
     final ApplicationInfo info; // all about the first app in the process
     final boolean isolated;     // true if this is a special isolated process
     final int uid;              // uid of process; may be different from 'info' if isolated
     final int userId;           // user of process.
     final String processName;   // name of the process
+    final ProcessTracker.ProcessState tracker; // tracking execution of process
     // List of packages running in the process
     final HashSet<String> pkgList = new HashSet<String>();
     IApplicationThread thread;  // the actual proc...  may be null only if
@@ -61,8 +62,8 @@
     long lastActivityTime;      // For managing the LRU list
     long lruWeight;             // Weight for ordering in LRU list
     int maxAdj;                 // Maximum OOM adjustment for this process
-    int hiddenAdj;              // If hidden, this is the adjustment to use
-    int clientHiddenAdj;        // If empty but hidden client, this is the adjustment to use
+    int cachedAdj;              // If cached, this is the adjustment to use
+    int clientCachedAdj;        // If empty but cached client, this is the adjustment to use
     int emptyAdj;               // If empty, this is the adjustment to use
     int curRawAdj;              // Current OOM unlimited adjustment for this process
     int setRawAdj;              // Last set OOM unlimited adjustment for this process
@@ -108,7 +109,7 @@
     long lastLowMemory;         // When we last told the app that memory is low
     boolean reportLowMemory;    // Set to true when waiting to report low mem
     boolean empty;              // Is this an empty background process?
-    boolean hidden;             // Is this a hidden process?
+    boolean cached;             // Is this a cached process?
     int lastPss;                // Last pss size reported by app.
     String adjType;             // Debugging: primary thing impacting oom_adj.
     int adjTypeCode;            // Debugging: adj code to report to app.
@@ -201,11 +202,11 @@
                 pw.print(" lruWeight="); pw.print(lruWeight);
                 pw.print(" serviceb="); pw.print(serviceb);
                 pw.print(" keeping="); pw.print(keeping);
-                pw.print(" hidden="); pw.print(hidden);
+                pw.print(" cached="); pw.print(cached);
                 pw.print(" empty="); pw.println(empty);
         pw.print(prefix); pw.print("oom: max="); pw.print(maxAdj);
-                pw.print(" hidden="); pw.print(hiddenAdj);
-                pw.print(" client="); pw.print(clientHiddenAdj);
+                pw.print(" cached="); pw.print(cachedAdj);
+                pw.print(" client="); pw.print(clientCachedAdj);
                 pw.print(" empty="); pw.print(emptyAdj);
                 pw.print(" curRaw="); pw.print(curRawAdj);
                 pw.print(" setRaw="); pw.print(setRawAdj);
@@ -325,17 +326,19 @@
     }
     
     ProcessRecord(BatteryStatsImpl.Uid.Proc _batteryStats, IApplicationThread _thread,
-            ApplicationInfo _info, String _processName, int _uid) {
+            ApplicationInfo _info, String _processName, int _uid,
+            ProcessTracker.ProcessState _tracker) {
         batteryStats = _batteryStats;
         info = _info;
         isolated = _info.uid != _uid;
         uid = _uid;
         userId = UserHandle.getUserId(_uid);
         processName = _processName;
+        tracker = _tracker;
         pkgList.add(_info.packageName);
         thread = _thread;
-        maxAdj = ProcessList.HIDDEN_APP_MAX_ADJ;
-        hiddenAdj = clientHiddenAdj = emptyAdj = ProcessList.HIDDEN_APP_MIN_ADJ;
+        maxAdj = ProcessList.CACHED_APP_MAX_ADJ;
+        cachedAdj = clientCachedAdj = emptyAdj = ProcessList.CACHED_APP_MIN_ADJ;
         curRawAdj = setRawAdj = -100;
         curAdj = setAdj = -100;
         persistent = false;
diff --git a/services/java/com/android/server/am/ProcessTracker.java b/services/java/com/android/server/am/ProcessTracker.java
new file mode 100644
index 0000000..4eb71c7
--- /dev/null
+++ b/services/java/com/android/server/am/ProcessTracker.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.am;
+
+import android.os.SystemClock;
+import android.util.ArrayMap;
+import android.util.SparseArray;
+import android.util.TimeUtils;
+import com.android.server.ProcessMap;
+
+import java.io.FileDescriptor;
+import java.io.PrintWriter;
+
+public final class ProcessTracker {
+    public static final int STATE_NOTHING = -1;
+    public static final int STATE_TOP = 0;
+    public static final int STATE_FOREGROUND = 1;
+    public static final int STATE_VISIBLE = 2;
+    public static final int STATE_PERCEPTIBLE = 3;
+    public static final int STATE_BACKUP = 4;
+    public static final int STATE_SERVICE = 5;
+    public static final int STATE_HOME = 6;
+    public static final int STATE_PREVIOUS = 7;
+    public static final int STATE_CACHED = 8;
+    public static final int STATE_SCREEN_ON_MOD = STATE_CACHED+1;
+    public static final int STATE_COUNT = STATE_SCREEN_ON_MOD*2;
+
+    static String[] STATE_NAMES = new String[] {
+            "Top        ", "Foreground ", "Visible    ", "Perceptible", "Backup     ",
+            "Service    ", "Home       ", "Previous   ", "Cached     "
+    };
+
+    public static final class ProcessState {
+        final long[] mTimes = new long[STATE_COUNT];
+        int mCurState = STATE_NOTHING;
+        long mStartTime;
+
+        public void setState(int state, long now) {
+            if (mCurState != STATE_NOTHING) {
+                mTimes[mCurState] += now - mStartTime;
+            }
+            mCurState = state;
+            mStartTime = now;
+        }
+    }
+
+    static final class State {
+        final ProcessMap<ProcessState> mProcesses = new ProcessMap<ProcessState>();
+    }
+
+    final State mState = new State();
+
+    public ProcessTracker() {
+    }
+
+    public ProcessState getStateLocked(String name, int uid) {
+        ProcessState ps = mState.mProcesses.get(name, uid);
+        if (ps != null) {
+            return ps;
+        }
+        ps = new ProcessState();
+        mState.mProcesses.put(name, uid, ps);
+        return ps;
+    }
+
+    public void dumpLocked(FileDescriptor fd, PrintWriter pw, String[] args) {
+        final long now = SystemClock.uptimeMillis();
+        ArrayMap<String, SparseArray<ProcessState>> pmap = mState.mProcesses.getMap();
+        for (int ip=0; ip<pmap.size(); ip++) {
+            String procName = pmap.keyAt(ip);
+            SparseArray<ProcessState> procs = pmap.valueAt(ip);
+            for (int iu=0; iu<procs.size(); iu++) {
+                int uid = procs.keyAt(iu);
+                ProcessState state = procs.valueAt(iu);
+                pw.print("  "); pw.print(procName); pw.print(" / "); pw.print(uid); pw.println(":");
+                long totalTime = 0;
+                for (int is=0; is<STATE_NAMES.length; is++) {
+                    long time = state.mTimes[is];
+                    if (state.mCurState == is) {
+                        time += now - state.mStartTime;
+                    }
+                    if (time != 0) {
+                        pw.print("    "); pw.print(STATE_NAMES[is]); pw.print(": ");
+                        TimeUtils.formatDuration(time, pw); pw.println();
+                        totalTime += time;
+                    }
+                }
+                if (totalTime != 0) {
+                    pw.print("    TOTAL      : ");
+                    TimeUtils.formatDuration(totalTime, pw);
+                    pw.println();
+                }
+            }
+        }
+    }
+}
diff --git a/services/java/com/android/server/am/ProviderMap.java b/services/java/com/android/server/am/ProviderMap.java
index ee406c8..5759a44 100644
--- a/services/java/com/android/server/am/ProviderMap.java
+++ b/services/java/com/android/server/am/ProviderMap.java
@@ -35,7 +35,7 @@
  * Keeps track of content providers by authority (name) and class. It separates the mapping by
  * user and ones that are not user-specific (system providers).
  */
-public class ProviderMap {
+public final class ProviderMap {
 
     private static final String TAG = "ProviderMap";
 
diff --git a/services/java/com/android/server/am/ReceiverList.java b/services/java/com/android/server/am/ReceiverList.java
index 9b6701e..b19cc5d 100644
--- a/services/java/com/android/server/am/ReceiverList.java
+++ b/services/java/com/android/server/am/ReceiverList.java
@@ -32,7 +32,7 @@
  * A receiver object that has registered for one or more broadcasts.
  * The ArrayList holds BroadcastFilter objects.
  */
-class ReceiverList extends ArrayList<BroadcastFilter>
+final class ReceiverList extends ArrayList<BroadcastFilter>
         implements IBinder.DeathRecipient {
     final ActivityManagerService owner;
     public final IIntentReceiver receiver;
diff --git a/services/java/com/android/server/am/ServiceRecord.java b/services/java/com/android/server/am/ServiceRecord.java
index 707e8ee..45e248b 100644
--- a/services/java/com/android/server/am/ServiceRecord.java
+++ b/services/java/com/android/server/am/ServiceRecord.java
@@ -47,7 +47,7 @@
 /**
  * A running application service.
  */
-class ServiceRecord extends Binder {
+final class ServiceRecord extends Binder {
     // Maximum number of delivery attempts before giving up.
     static final int MAX_DELIVERY_COUNT = 3;
 
diff --git a/services/java/com/android/server/am/StrictModeViolationDialog.java b/services/java/com/android/server/am/StrictModeViolationDialog.java
index 35d50a1..b6d0daa 100644
--- a/services/java/com/android/server/am/StrictModeViolationDialog.java
+++ b/services/java/com/android/server/am/StrictModeViolationDialog.java
@@ -25,7 +25,7 @@
 import android.os.Message;
 import android.util.Slog;
 
-class StrictModeViolationDialog extends BaseErrorDialog {
+final class StrictModeViolationDialog extends BaseErrorDialog {
     private final static String TAG = "StrictModeViolationDialog";
 
     private final ActivityManagerService mService;
diff --git a/services/java/com/android/server/am/TaskRecord.java b/services/java/com/android/server/am/TaskRecord.java
index 58392ef..d03da20 100644
--- a/services/java/com/android/server/am/TaskRecord.java
+++ b/services/java/com/android/server/am/TaskRecord.java
@@ -33,7 +33,7 @@
 import java.io.PrintWriter;
 import java.util.ArrayList;
 
-class TaskRecord extends ThumbnailHolder {
+final class TaskRecord extends ThumbnailHolder {
     final int taskId;       // Unique identifier for this task.
     final String affinity;  // The affinity name for this task, or null.
     Intent intent;          // The original intent that started the task.
diff --git a/services/java/com/android/server/am/TransferPipe.java b/services/java/com/android/server/am/TransferPipe.java
index c3f4f93..055c577 100644
--- a/services/java/com/android/server/am/TransferPipe.java
+++ b/services/java/com/android/server/am/TransferPipe.java
@@ -32,7 +32,7 @@
 /**
  * Helper for transferring data through a pipe from a client app.
  */
-class TransferPipe implements Runnable {
+final class TransferPipe implements Runnable {
     static final String TAG = "TransferPipe";
     static final boolean DEBUG = false;
 
diff --git a/services/java/com/android/server/am/UriPermission.java b/services/java/com/android/server/am/UriPermission.java
index cba8e0d..5e2ad009 100644
--- a/services/java/com/android/server/am/UriPermission.java
+++ b/services/java/com/android/server/am/UriPermission.java
@@ -35,7 +35,7 @@
  * Test cases are at cts/tests/appsecurity-tests/test-apps/UsePermissionDiffCert/
  *      src/com/android/cts/usespermissiondiffcertapp/AccessPermissionWithDiffSigTest.java
  */
-class UriPermission {
+final class UriPermission {
     private static final String TAG = "UriPermission";
 
     final int userHandle;
diff --git a/services/java/com/android/server/am/UriPermissionOwner.java b/services/java/com/android/server/am/UriPermissionOwner.java
index 90ac88d..7bbd3bc 100644
--- a/services/java/com/android/server/am/UriPermissionOwner.java
+++ b/services/java/com/android/server/am/UriPermissionOwner.java
@@ -24,7 +24,7 @@
 import java.util.HashSet;
 import java.util.Iterator;
 
-class UriPermissionOwner {
+final class UriPermissionOwner {
     final ActivityManagerService service;
     final Object owner;
 
diff --git a/services/java/com/android/server/am/UserStartedState.java b/services/java/com/android/server/am/UserStartedState.java
index 0e71f81..d3e73d5 100644
--- a/services/java/com/android/server/am/UserStartedState.java
+++ b/services/java/com/android/server/am/UserStartedState.java
@@ -22,7 +22,7 @@
 import android.app.IStopUserCallback;
 import android.os.UserHandle;
 
-public class UserStartedState {
+public final class UserStartedState {
     // User is first coming up.
     public final static int STATE_BOOTING = 0;
     // User is in the normal running state.