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Merge "Don't allow more than 3 actively running users at a time." into jb-mr1-dev

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This commit is contained in:
Dianne Hackborn
2012-09-18 18:22:15 -07:00
committed by Android (Google) Code Review
parent 6d4e887da4 bb1aeff320
commit 1e5aeecb64
1 changed files with 77 additions and 42 deletions
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119
services/java/com/android/server/am/ActivityManagerService.java
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@@ -253,6 +253,9 @@ public final class ActivityManagerService extends ActivityManagerNative
// giving up on them and unfreezing the screen.
static final int USER_SWITCH_TIMEOUT = 2*1000;
// Maximum number of users we allow to be running at a time.
static final int MAX_RUNNING_USERS = 3;
static final int MY_PID = Process.myPid();
static final String[] EMPTY_STRING_ARRAY = new String[0];
@@ -14123,6 +14126,33 @@ public final class ActivityManagerService extends ActivityManagerNative
android.Manifest.permission.RECEIVE_BOOT_COMPLETED,
false, false, MY_PID, Process.SYSTEM_UID, userId);
}
int num = mUserLru.size();
int i = 0;
while (num > MAX_RUNNING_USERS && i < mUserLru.size()) {
Integer oldUserId = mUserLru.get(i);
UserStartedState oldUss = mStartedUsers.get(oldUserId);
if (oldUss == null) {
// Shouldn't happen, but be sane if it does.
mUserLru.remove(i);
num--;
continue;
}
if (oldUss.mState == UserStartedState.STATE_STOPPING) {
// This user is already stopping, doesn't count.
num--;
i++;
continue;
}
if (oldUserId == UserHandle.USER_OWNER || oldUserId == mCurrentUserId) {
// Owner and current can't be stopped, but count as running.
i++;
continue;
}
// This is a user to be stopped.
stopUserLocked(oldUserId, null);
num--;
i++;
}
}
}
@@ -14141,52 +14171,56 @@ public final class ActivityManagerService extends ActivityManagerNative
throw new IllegalArgumentException("Can't stop primary user " + userId);
}
synchronized (this) {
if (mCurrentUserId == userId) {
return ActivityManager.USER_OP_IS_CURRENT;
}
return stopUserLocked(userId, callback);
}
}
final UserStartedState uss = mStartedUsers.get(userId);
if (uss == null) {
// User is not started, nothing to do... but we do need to
// callback if requested.
if (callback != null) {
mHandler.post(new Runnable() {
@Override
public void run() {
try {
callback.userStopped(userId);
} catch (RemoteException e) {
}
}
});
}
return ActivityManager.USER_OP_SUCCESS;
}
private int stopUserLocked(final int userId, final IStopUserCallback callback) {
if (mCurrentUserId == userId) {
return ActivityManager.USER_OP_IS_CURRENT;
}
final UserStartedState uss = mStartedUsers.get(userId);
if (uss == null) {
// User is not started, nothing to do... but we do need to
// callback if requested.
if (callback != null) {
uss.mStopCallbacks.add(callback);
}
if (uss.mState != UserStartedState.STATE_STOPPING) {
uss.mState = UserStartedState.STATE_STOPPING;
long ident = Binder.clearCallingIdentity();
try {
// Inform of user switch
Intent intent = new Intent(Intent.ACTION_SHUTDOWN);
final IIntentReceiver resultReceiver = new IIntentReceiver.Stub() {
@Override
public void performReceive(Intent intent, int resultCode, String data,
Bundle extras, boolean ordered, boolean sticky, int sendingUser) {
finishUserStop(uss);
mHandler.post(new Runnable() {
@Override
public void run() {
try {
callback.userStopped(userId);
} catch (RemoteException e) {
}
};
broadcastIntentLocked(null, null, intent,
null, resultReceiver, 0, null, null, null,
true, false, MY_PID, Process.SYSTEM_UID, userId);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
});
}
return ActivityManager.USER_OP_SUCCESS;
}
if (callback != null) {
uss.mStopCallbacks.add(callback);
}
if (uss.mState != UserStartedState.STATE_STOPPING) {
uss.mState = UserStartedState.STATE_STOPPING;
long ident = Binder.clearCallingIdentity();
try {
// Inform of user switch
Intent intent = new Intent(Intent.ACTION_SHUTDOWN);
final IIntentReceiver resultReceiver = new IIntentReceiver.Stub() {
@Override
public void performReceive(Intent intent, int resultCode, String data,
Bundle extras, boolean ordered, boolean sticky, int sendingUser) {
finishUserStop(uss);
}
};
broadcastIntentLocked(null, null, intent,
null, resultReceiver, 0, null, null, null,
true, false, MY_PID, Process.SYSTEM_UID, userId);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
@@ -14206,6 +14240,7 @@ public final class ActivityManagerService extends ActivityManagerNative
stopped = true;
// User can no longer run.
mStartedUsers.remove(userId);
mUserLru.remove(Integer.valueOf(userId));
// Clean up all state and processes associated with the user.
// Kill all the processes for the user.