Improve handling of low memory.
Now classify background processes into a set of bins of how much
memory they should try to clear. The last bin also involves
destroying all activities in that process.
Removed the old code for the simulator that is no longer needed
(yay). The debugging features it had are now integrated into the
regular oom adj code.
Small fixes to load average service.
Change-Id: Ic8df401714b188c73b50dbc8f8e6345b58f1f3a0
diff --git a/services/java/com/android/server/am/ActivityManagerService.java b/services/java/com/android/server/am/ActivityManagerService.java
index 8501163..fd93bcf 100644
--- a/services/java/com/android/server/am/ActivityManagerService.java
+++ b/services/java/com/android/server/am/ActivityManagerService.java
@@ -45,7 +45,6 @@
import android.app.IProcessObserver;
import android.app.IServiceConnection;
import android.app.IThumbnailReceiver;
-import android.app.IThumbnailRetriever;
import android.app.Instrumentation;
import android.app.Notification;
import android.app.NotificationManager;
@@ -54,6 +53,7 @@
import android.app.backup.IBackupManager;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
+import android.content.ComponentCallbacks;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
@@ -181,22 +181,8 @@
// The flags that are set for all calls we make to the package manager.
static final int STOCK_PM_FLAGS = PackageManager.GET_SHARED_LIBRARY_FILES;
- private static final String SYSTEM_SECURE = "ro.secure";
private static final String SYSTEM_DEBUGGABLE = "ro.debuggable";
- // This is the maximum number of application processes we would like
- // to have running. Due to the asynchronous nature of things, we can
- // temporarily go beyond this limit.
- static final int MAX_PROCESSES = 2;
-
- // Set to false to leave processes running indefinitely, relying on
- // the kernel killing them as resources are required.
- static final boolean ENFORCE_PROCESS_LIMIT = false;
-
- // This is the maximum number of activities that we would like to have
- // running at a given time.
- static final int MAX_ACTIVITIES = 20;
-
// Maximum number of recent tasks that we can remember.
static final int MAX_RECENT_TASKS = 20;
@@ -914,7 +900,8 @@
*/
boolean mBooted = false;
- int mProcessLimit = 0;
+ int mProcessLimit = MAX_HIDDEN_APPS;
+ int mProcessLimitOverride = -1;
WindowManagerService mWindowManager;
@@ -2291,11 +2278,10 @@
}
synchronized (this) {
- int index = mMainStack.indexOfTokenLocked(callingActivity);
- if (index < 0) {
+ ActivityRecord r = mMainStack.isInStackLocked(callingActivity);
+ if (r == null) {
return false;
}
- ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(index);
if (r.app == null || r.app.thread == null) {
// The caller is not running... d'oh!
return false;
@@ -2442,11 +2428,10 @@
public void setRequestedOrientation(IBinder token,
int requestedOrientation) {
synchronized (this) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index < 0) {
+ ActivityRecord r = mMainStack.isInStackLocked(token);
+ if (r == null) {
return;
}
- ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(index);
final long origId = Binder.clearCallingIdentity();
mWindowManager.setAppOrientation(r, requestedOrientation);
Configuration config = mWindowManager.updateOrientationFromAppTokens(
@@ -2464,11 +2449,10 @@
public int getRequestedOrientation(IBinder token) {
synchronized (this) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index < 0) {
+ ActivityRecord r = mMainStack.isInStackLocked(token);
+ if (r == null) {
return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
}
- ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(index);
return mWindowManager.getAppOrientation(r);
}
}
@@ -2609,11 +2593,10 @@
public final void finishSubActivity(IBinder token, String resultWho,
int requestCode) {
synchronized(this) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index < 0) {
+ ActivityRecord self = mMainStack.isInStackLocked(token);
+ if (self == null) {
return;
}
- ActivityRecord self = (ActivityRecord)mMainStack.mHistory.get(index);
final long origId = Binder.clearCallingIdentity();
@@ -2652,11 +2635,10 @@
public void overridePendingTransition(IBinder token, String packageName,
int enterAnim, int exitAnim) {
synchronized(this) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index < 0) {
+ ActivityRecord self = mMainStack.isInStackLocked(token);
+ if (self == null) {
return;
}
- ActivityRecord self = (ActivityRecord)mMainStack.mHistory.get(index);
final long origId = Binder.clearCallingIdentity();
@@ -2735,8 +2717,7 @@
}
}
- r.stack.cleanUpActivityLocked(r, true);
- r.state = ActivityState.STOPPED;
+ r.stack.cleanUpActivityLocked(r, true, true);
}
atTop = false;
}
@@ -3920,20 +3901,9 @@
final long origId = Binder.clearCallingIdentity();
synchronized (this) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index >= 0) {
- r = (ActivityRecord)mMainStack.mHistory.get(index);
- r.icicle = icicle;
- r.haveState = true;
- r.updateThumbnail(thumbnail, description);
- r.stopped = true;
- r.state = ActivityState.STOPPED;
- if (!r.finishing) {
- if (r.configDestroy) {
- r.stack.destroyActivityLocked(r, true);
- r.stack.resumeTopActivityLocked(null);
- }
- }
+ r = mMainStack.isInStackLocked(token);
+ if (r != null) {
+ r.stack.activityStoppedLocked(r, icicle, thumbnail, description);
}
}
@@ -3966,35 +3936,30 @@
}
private ActivityRecord getCallingRecordLocked(IBinder token) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index >= 0) {
- ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(index);
- if (r != null) {
- return r.resultTo;
- }
+ ActivityRecord r = mMainStack.isInStackLocked(token);
+ if (r == null) {
+ return null;
}
- return null;
+ return r.resultTo;
}
public ComponentName getActivityClassForToken(IBinder token) {
synchronized(this) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index >= 0) {
- ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(index);
- return r.intent.getComponent();
+ ActivityRecord r = mMainStack.isInStackLocked(token);
+ if (r == null) {
+ return null;
}
- return null;
+ return r.intent.getComponent();
}
}
public String getPackageForToken(IBinder token) {
synchronized(this) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index >= 0) {
- ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(index);
- return r.packageName;
+ ActivityRecord r = mMainStack.isInStackLocked(token);
+ if (r == null) {
+ return null;
}
- return null;
+ return r.packageName;
}
}
@@ -4057,11 +4022,10 @@
int requestCode, Intent[] intents, String[] resolvedTypes, int flags) {
ActivityRecord activity = null;
if (type == INTENT_SENDER_ACTIVITY_RESULT) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index < 0) {
+ activity = mMainStack.isInStackLocked(token);
+ if (activity == null) {
return null;
}
- activity = (ActivityRecord)mMainStack.mHistory.get(index);
if (activity.finishing) {
return null;
}
@@ -4183,11 +4147,17 @@
public void setProcessLimit(int max) {
enforceCallingPermission(android.Manifest.permission.SET_PROCESS_LIMIT,
"setProcessLimit()");
- mProcessLimit = max;
+ synchronized (this) {
+ mProcessLimit = max < 0 ? MAX_HIDDEN_APPS : max;
+ mProcessLimitOverride = max;
+ }
+ trimApplications();
}
public int getProcessLimit() {
- return mProcessLimit;
+ synchronized (this) {
+ return mProcessLimitOverride;
+ }
}
void foregroundTokenDied(ForegroundToken token) {
@@ -5451,11 +5421,10 @@
synchronized(this) {
if (r == null) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index < 0) {
+ r = mMainStack.isInStackLocked(token);
+ if (r == null) {
return;
}
- r = (ActivityRecord)mMainStack.mHistory.get(index);
}
if (thumbnail == null && r.thumbHolder != null) {
thumbnail = r.thumbHolder.lastThumbnail;
@@ -6169,9 +6138,8 @@
final long origId = Binder.clearCallingIdentity();
synchronized (this) {
- int index = mMainStack.indexOfTokenLocked(token);
- if (index >= 0) {
- r = (ActivityRecord)mMainStack.mHistory.get(index);
+ r = mMainStack.isInStackLocked(token);
+ if (r != null) {
mMainStack.activitySleptLocked(r);
}
}
@@ -6322,22 +6290,20 @@
public void setImmersive(IBinder token, boolean immersive) {
synchronized(this) {
- int index = (token != null) ? mMainStack.indexOfTokenLocked(token) : -1;
- if (index < 0) {
+ ActivityRecord r = mMainStack.isInStackLocked(token);
+ if (r == null) {
throw new IllegalArgumentException();
}
- ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(index);
r.immersive = immersive;
}
}
public boolean isImmersive(IBinder token) {
synchronized (this) {
- int index = (token != null) ? mMainStack.indexOfTokenLocked(token) : -1;
- if (index < 0) {
+ ActivityRecord r = mMainStack.isInStackLocked(token);
+ if (r == null) {
throw new IllegalArgumentException();
}
- ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(index);
return r.immersive;
}
}
@@ -8800,9 +8766,10 @@
} else {
foreground = " ";
}
- pw.println(String.format("%s%s #%2d: adj=%s/%s%s %s (%s)",
+ pw.println(String.format("%s%s #%2d: adj=%s/%s%s trm=%2d %s (%s)",
prefix, (r.persistent ? persistentLabel : normalLabel),
- N-i, oomAdj, schedGroup, foreground, r.toShortString(), r.adjType));
+ N-i, oomAdj, schedGroup, foreground, r.trimMemoryLevel,
+ r.toShortString(), r.adjType));
if (r.adjSource != null || r.adjTarget != null) {
pw.print(prefix);
pw.print(" ");
@@ -10337,12 +10304,11 @@
ActivityRecord activity = null;
if (token != null) {
- int aindex = mMainStack.indexOfTokenLocked(token);
- if (aindex < 0) {
+ activity = mMainStack.isInStackLocked(token);
+ if (activity == null) {
Slog.w(TAG, "Binding with unknown activity: " + token);
return 0;
}
- activity = (ActivityRecord)mMainStack.mHistory.get(aindex);
}
int clientLabel = 0;
@@ -11556,8 +11522,8 @@
return false;
}
int state = r.state;
- r.state = r.IDLE;
- if (state == r.IDLE) {
+ r.state = BroadcastRecord.IDLE;
+ if (state == BroadcastRecord.IDLE) {
if (explicit) {
Slog.w(TAG, "finishReceiver called but state is IDLE");
}
@@ -12941,7 +12907,7 @@
ProcessRecord proc = mProcessesToGc.get(0);
Message msg = mHandler.obtainMessage(GC_BACKGROUND_PROCESSES_MSG);
- long when = mProcessesToGc.get(0).lastRequestedGc + GC_MIN_INTERVAL;
+ long when = proc.lastRequestedGc + GC_MIN_INTERVAL;
long now = SystemClock.uptimeMillis();
if (when < (now+GC_TIMEOUT)) {
when = now + GC_TIMEOUT;
@@ -13084,16 +13050,14 @@
}
}
- private final boolean updateOomAdjLocked(
+ private final void updateOomAdjLocked(
ProcessRecord app, int hiddenAdj, ProcessRecord TOP_APP) {
app.hiddenAdj = hiddenAdj;
if (app.thread == null) {
- return true;
+ return;
}
- boolean success = true;
-
final boolean wasKeeping = app.keeping;
int adj = computeOomAdjLocked(app, hiddenAdj, TOP_APP, false);
@@ -13129,10 +13093,10 @@
if (Process.setOomAdj(app.pid, adj)) {
if (DEBUG_SWITCH || DEBUG_OOM_ADJ) Slog.v(
TAG, "Set app " + app.processName +
- " oom adj to " + adj);
+ " oom adj to " + adj + " because " + app.adjType);
app.setAdj = adj;
} else {
- success = false;
+ Slog.w(TAG, "Failed setting oom adj of " + app + " to " + adj);
}
}
if (app.setSchedGroup != app.curSchedGroup) {
@@ -13158,8 +13122,7 @@
} finally {
Binder.restoreCallingIdentity(oldId);
}
- }
- if (false) {
+ } else {
if (app.thread != null) {
try {
app.thread.setSchedulingGroup(app.curSchedGroup);
@@ -13169,8 +13132,6 @@
}
}
}
-
- return success;
}
private final ActivityRecord resumedAppLocked() {
@@ -13184,30 +13145,26 @@
return resumedActivity;
}
- private final boolean updateOomAdjLocked(ProcessRecord app) {
+ private final void updateOomAdjLocked(ProcessRecord app) {
final ActivityRecord TOP_ACT = resumedAppLocked();
final ProcessRecord TOP_APP = TOP_ACT != null ? TOP_ACT.app : null;
int curAdj = app.curAdj;
- final boolean wasHidden = app.curAdj >= HIDDEN_APP_MIN_ADJ
- && app.curAdj <= HIDDEN_APP_MAX_ADJ;
+ final boolean wasHidden = curAdj >= HIDDEN_APP_MIN_ADJ
+ && curAdj <= HIDDEN_APP_MAX_ADJ;
mAdjSeq++;
- final boolean res = updateOomAdjLocked(app, app.hiddenAdj, TOP_APP);
- if (res) {
- final boolean nowHidden = app.curAdj >= HIDDEN_APP_MIN_ADJ
- && app.curAdj <= HIDDEN_APP_MAX_ADJ;
- if (nowHidden != wasHidden) {
- // Changed to/from hidden state, so apps after it in the LRU
- // list may also be changed.
- updateOomAdjLocked();
- }
+ updateOomAdjLocked(app, app.hiddenAdj, TOP_APP);
+ final boolean nowHidden = app.curAdj >= HIDDEN_APP_MIN_ADJ
+ && app.curAdj <= HIDDEN_APP_MAX_ADJ;
+ if (nowHidden != wasHidden) {
+ // Changed to/from hidden state, so apps after it in the LRU
+ // list may also be changed.
+ updateOomAdjLocked();
}
- return res;
}
- final boolean updateOomAdjLocked() {
- boolean didOomAdj = true;
+ final void updateOomAdjLocked() {
final ActivityRecord TOP_ACT = resumedAppLocked();
final ProcessRecord TOP_APP = TOP_ACT != null ? TOP_ACT.app : null;
@@ -13229,45 +13186,104 @@
int step = 0;
int numHidden = 0;
- // First try updating the OOM adjustment for each of the
+ // First update the OOM adjustment for each of the
// application processes based on their current state.
int i = mLruProcesses.size();
int curHiddenAdj = HIDDEN_APP_MIN_ADJ;
+ int numBg = 0;
while (i > 0) {
i--;
ProcessRecord app = mLruProcesses.get(i);
//Slog.i(TAG, "OOM " + app + ": cur hidden=" + curHiddenAdj);
- if (updateOomAdjLocked(app, curHiddenAdj, TOP_APP)) {
- if (curHiddenAdj < EMPTY_APP_ADJ
- && app.curAdj == curHiddenAdj) {
- step++;
- if (step >= factor) {
- step = 0;
- curHiddenAdj++;
- }
+ updateOomAdjLocked(app, curHiddenAdj, TOP_APP);
+ if (curHiddenAdj < EMPTY_APP_ADJ
+ && app.curAdj == curHiddenAdj) {
+ step++;
+ if (step >= factor) {
+ step = 0;
+ curHiddenAdj++;
}
+ }
+ if (!app.killedBackground) {
if (app.curAdj >= HIDDEN_APP_MIN_ADJ) {
- if (!app.killedBackground) {
- numHidden++;
- if (numHidden > MAX_HIDDEN_APPS) {
- Slog.i(TAG, "No longer want " + app.processName
- + " (pid " + app.pid + "): hidden #" + numHidden);
- EventLog.writeEvent(EventLogTags.AM_KILL, app.pid,
- app.processName, app.setAdj, "too many background");
- app.killedBackground = true;
- Process.killProcessQuiet(app.pid);
- }
+ numHidden++;
+ if (numHidden > mProcessLimit) {
+ Slog.i(TAG, "No longer want " + app.processName
+ + " (pid " + app.pid + "): hidden #" + numHidden);
+ EventLog.writeEvent(EventLogTags.AM_KILL, app.pid,
+ app.processName, app.setAdj, "too many background");
+ app.killedBackground = true;
+ Process.killProcessQuiet(app.pid);
+ } else {
+ numBg++;
}
+ } else if (app.curAdj >= HOME_APP_ADJ) {
+ numBg++;
}
- } else {
- didOomAdj = false;
}
}
- // If we return false, we will fall back on killing processes to
- // have a fixed limit. Do this if a limit has been requested; else
- // only return false if one of the adjustments failed.
- return ENFORCE_PROCESS_LIMIT || mProcessLimit > 0 ? false : didOomAdj;
+ // Now determine the memory trimming level of background processes.
+ // Unfortunately we need to start at the back of the list to do this
+ // properly. We only do this if the number of background apps we
+ // 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 <= (MAX_HIDDEN_APPS/2)) {
+ final int N = mLruProcesses.size();
+ factor = numBg/3;
+ step = 0;
+ int curLevel = ComponentCallbacks.TRIM_MEMORY_COMPLETE;
+ for (i=0; i<N; i++) {
+ ProcessRecord app = mLruProcesses.get(i);
+ if (app.curAdj >= HIDDEN_APP_MIN_ADJ && !app.killedBackground) {
+ if (app.trimMemoryLevel < curLevel && app.thread != null) {
+ try {
+ app.thread.scheduleTrimMemory(curLevel);
+ } catch (RemoteException e) {
+ }
+ if (curLevel >= ComponentCallbacks.TRIM_MEMORY_COMPLETE) {
+ // For these apps we will also finish their activities
+ // to help them free memory.
+ mMainStack.destroyActivitiesLocked(app, false);
+ }
+ }
+ app.trimMemoryLevel = curLevel;
+ step++;
+ if (step >= factor) {
+ switch (curLevel) {
+ case ComponentCallbacks.TRIM_MEMORY_COMPLETE:
+ curLevel = ComponentCallbacks.TRIM_MEMORY_MODERATE;
+ break;
+ case ComponentCallbacks.TRIM_MEMORY_MODERATE:
+ curLevel = ComponentCallbacks.TRIM_MEMORY_BACKGROUND;
+ break;
+ }
+ }
+ } else if (app.curAdj >= PERCEPTIBLE_APP_ADJ) {
+ if (app.trimMemoryLevel < ComponentCallbacks.TRIM_MEMORY_INVISIBLE
+ && app.thread != null) {
+ try {
+ app.thread.scheduleTrimMemory(ComponentCallbacks.TRIM_MEMORY_INVISIBLE);
+ } catch (RemoteException e) {
+ }
+ }
+ app.trimMemoryLevel = ComponentCallbacks.TRIM_MEMORY_INVISIBLE;
+ } else {
+ app.trimMemoryLevel = 0;
+ }
+ }
+ } else {
+ final int N = mLruProcesses.size();
+ for (i=0; i<N; i++) {
+ ProcessRecord app = mLruProcesses.get(i);
+ app.trimMemoryLevel = 0;
+ }
+ }
+
+ if (mAlwaysFinishActivities) {
+ mMainStack.destroyActivitiesLocked(null, false);
+ }
}
final void trimApplications() {
@@ -13307,165 +13323,8 @@
}
}
- // Now try updating the OOM adjustment for each of the
- // application processes based on their current state.
- // If the setOomAdj() API is not supported, then go with our
- // back-up plan...
- if (!updateOomAdjLocked()) {
-
- // Count how many processes are running services.
- int numServiceProcs = 0;
- for (i=mLruProcesses.size()-1; i>=0; i--) {
- final ProcessRecord app = mLruProcesses.get(i);
-
- if (app.persistent || app.services.size() != 0
- || app.curReceiver != null) {
- // Don't count processes holding services against our
- // maximum process count.
- if (localLOGV) Slog.v(
- TAG, "Not trimming app " + app + " with services: "
- + app.services);
- numServiceProcs++;
- }
- }
-
- int curMaxProcs = mProcessLimit;
- if (curMaxProcs <= 0) curMaxProcs = MAX_PROCESSES;
- if (mAlwaysFinishActivities) {
- curMaxProcs = 1;
- }
- curMaxProcs += numServiceProcs;
-
- // Quit as many processes as we can to get down to the desired
- // process count. First remove any processes that no longer
- // have activites running in them.
- for ( i=0;
- i<mLruProcesses.size()
- && mLruProcesses.size() > curMaxProcs;
- i++) {
- final ProcessRecord app = mLruProcesses.get(i);
- // Quit an application only if it is not currently
- // running any activities.
- if (!app.persistent && app.activities.size() == 0
- && app.curReceiver == null && app.services.size() == 0) {
- Slog.i(
- TAG, "Exiting empty application process "
- + app.processName + " ("
- + (app.thread != null ? app.thread.asBinder() : null)
- + ")\n");
- if (app.pid > 0 && app.pid != MY_PID) {
- EventLog.writeEvent(EventLogTags.AM_KILL, app.pid,
- app.processName, app.setAdj, "empty");
- Process.killProcessQuiet(app.pid);
- } else {
- try {
- app.thread.scheduleExit();
- } catch (Exception e) {
- // Ignore exceptions.
- }
- }
- // todo: For now we assume the application is not buggy
- // or evil, and will quit as a result of our request.
- // Eventually we need to drive this off of the death
- // notification, and kill the process if it takes too long.
- cleanUpApplicationRecordLocked(app, false, i);
- i--;
- }
- }
-
- // If we still have too many processes, now from the least
- // recently used process we start finishing activities.
- if (false) Slog.v(
- TAG, "*** NOW HAVE " + mLruProcesses.size() +
- " of " + curMaxProcs + " processes");
- for ( i=0;
- i<mLruProcesses.size()
- && mLruProcesses.size() > curMaxProcs;
- i++) {
- final ProcessRecord app = mLruProcesses.get(i);
- // Quit the application only if we have a state saved for
- // all of its activities.
- boolean canQuit = !app.persistent && app.curReceiver == null
- && app.services.size() == 0;
- int NUMA = app.activities.size();
- int j;
- if (false) Slog.v(
- TAG, "Looking to quit " + app.processName);
- for (j=0; j<NUMA && canQuit; j++) {
- ActivityRecord r = app.activities.get(j);
- if (false) Slog.v(
- TAG, " " + r.intent.getComponent().flattenToShortString()
- + ": frozen=" + r.haveState + ", visible=" + r.visible);
- canQuit = (r.haveState || !r.stateNotNeeded)
- && !r.visible && r.stopped;
- }
- if (canQuit) {
- // Finish all of the activities, and then the app itself.
- for (j=0; j<NUMA; j++) {
- ActivityRecord r = app.activities.get(j);
- if (!r.finishing) {
- r.stack.destroyActivityLocked(r, false);
- }
- r.resultTo = null;
- }
- Slog.i(TAG, "Exiting application process "
- + app.processName + " ("
- + (app.thread != null ? app.thread.asBinder() : null)
- + ")\n");
- if (app.pid > 0 && app.pid != MY_PID) {
- EventLog.writeEvent(EventLogTags.AM_KILL, app.pid,
- app.processName, app.setAdj, "old background");
- Process.killProcessQuiet(app.pid);
- } else {
- try {
- app.thread.scheduleExit();
- } catch (Exception e) {
- // Ignore exceptions.
- }
- }
- // todo: For now we assume the application is not buggy
- // or evil, and will quit as a result of our request.
- // Eventually we need to drive this off of the death
- // notification, and kill the process if it takes too long.
- cleanUpApplicationRecordLocked(app, false, i);
- i--;
- //dump();
- }
- }
-
- }
-
- int curMaxActivities = MAX_ACTIVITIES;
- if (mAlwaysFinishActivities) {
- curMaxActivities = 1;
- }
-
- // Finally, if there are too many activities now running, try to
- // finish as many as we can to get back down to the limit.
- for ( i=0;
- i<mMainStack.mLRUActivities.size()
- && mMainStack.mLRUActivities.size() > curMaxActivities;
- i++) {
- final ActivityRecord r
- = (ActivityRecord)mMainStack.mLRUActivities.get(i);
-
- // We can finish this one if we have its icicle saved and
- // it is not persistent.
- if ((r.haveState || !r.stateNotNeeded) && !r.visible
- && r.stopped && !r.finishing) {
- final int origSize = mMainStack.mLRUActivities.size();
- r.stack.destroyActivityLocked(r, true);
-
- // This will remove it from the LRU list, so keep
- // our index at the same value. Note that this check to
- // see if the size changes is just paranoia -- if
- // something unexpected happens, we don't want to end up
- // in an infinite loop.
- if (origSize > mMainStack.mLRUActivities.size()) {
- i--;
- }
- }
- }
+ // Now update the oom adj for all processes.
+ updateOomAdjLocked();
}
}