Android/frameworks_base
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
be4e6aaa0252dd7da28b7aa85beba982538efa46
frameworks_base/services/java/com/android/server/am/CompatModePackages.java
Dianne Hackborn be4e6aaa02 Initial super-primitive process tracker. 
The goal of this is to keep track of what app processes
are doing, to determine who is being abusive, when the system
is getting into memory constrained situations, and help the
user determine how to resolve this.

Right now it doesn't really do any of that, just keeps track
of how long every process has been running since boot.

Also update the activity manager to use "cached" as the terminology
for what it used to interchangeably call hidden and background
processes, and switch ProcessMap over to using ArrayMap.

Change-Id: I270b0006aab1f38e17b7d9b65728679173c343f2
2013-06-07 15:09:17 -07:00

386 lines
14 KiB
Java
Raw Blame History

package com.android.server.am;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;
import com.android.internal.util.FastXmlSerializer;
import android.app.ActivityManager;
import android.app.AppGlobals;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageManager;
import android.content.res.CompatibilityInfo;
import android.os.Handler;
import android.os.Message;
import android.os.RemoteException;
import android.util.AtomicFile;
import android.util.Slog;
import android.util.Xml;
public final class CompatModePackages {
private final String TAG = ActivityManagerService.TAG;
private final boolean DEBUG_CONFIGURATION = ActivityManagerService.DEBUG_CONFIGURATION;
private final ActivityManagerService mService;
private final AtomicFile mFile;
// Compatibility state: no longer ask user to select the mode.
public static final int COMPAT_FLAG_DONT_ASK = 1<<0;
// Compatibility state: compatibility mode is enabled.
public static final int COMPAT_FLAG_ENABLED = 1<<1;
private final HashMap<String, Integer> mPackages = new HashMap<String, Integer>();
private static final int MSG_WRITE = ActivityManagerService.FIRST_COMPAT_MODE_MSG;
private final Handler mHandler = new Handler() {
@Override public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_WRITE:
saveCompatModes();
break;
default:
super.handleMessage(msg);
break;
}
}
};
public CompatModePackages(ActivityManagerService service, File systemDir) {
mService = service;
mFile = new AtomicFile(new File(systemDir, "packages-compat.xml"));
FileInputStream fis = null;
try {
fis = mFile.openRead();
XmlPullParser parser = Xml.newPullParser();
parser.setInput(fis, null);
int eventType = parser.getEventType();
while (eventType != XmlPullParser.START_TAG) {
eventType = parser.next();
}
String tagName = parser.getName();
if ("compat-packages".equals(tagName)) {
eventType = parser.next();
do {
if (eventType == XmlPullParser.START_TAG) {
tagName = parser.getName();
if (parser.getDepth() == 2) {
if ("pkg".equals(tagName)) {
String pkg = parser.getAttributeValue(null, "name");
if (pkg != null) {
String mode = parser.getAttributeValue(null, "mode");
int modeInt = 0;
if (mode != null) {
try {
modeInt = Integer.parseInt(mode);
} catch (NumberFormatException e) {
}
}
mPackages.put(pkg, modeInt);
}
}
}
}
eventType = parser.next();
} while (eventType != XmlPullParser.END_DOCUMENT);
}
} catch (XmlPullParserException e) {
Slog.w(TAG, "Error reading compat-packages", e);
} catch (java.io.IOException e) {
if (fis != null) Slog.w(TAG, "Error reading compat-packages", e);
} finally {
if (fis != null) {
try {
fis.close();
} catch (java.io.IOException e1) {
}
}
}
}
public HashMap<String, Integer> getPackages() {
return mPackages;
}
private int getPackageFlags(String packageName) {
Integer flags = mPackages.get(packageName);
return flags != null ? flags : 0;
}
public void handlePackageAddedLocked(String packageName, boolean updated) {
ApplicationInfo ai = null;
try {
ai = AppGlobals.getPackageManager().getApplicationInfo(packageName, 0, 0);
} catch (RemoteException e) {
}
if (ai == null) {
return;
}
CompatibilityInfo ci = compatibilityInfoForPackageLocked(ai);
final boolean mayCompat = !ci.alwaysSupportsScreen()
&& !ci.neverSupportsScreen();
if (updated) {
// Update -- if the app no longer can run in compat mode, clear
// any current settings for it.
if (!mayCompat && mPackages.containsKey(packageName)) {
mPackages.remove(packageName);
mHandler.removeMessages(MSG_WRITE);
Message msg = mHandler.obtainMessage(MSG_WRITE);
mHandler.sendMessageDelayed(msg, 10000);
}
}
}
public CompatibilityInfo compatibilityInfoForPackageLocked(ApplicationInfo ai) {
CompatibilityInfo ci = new CompatibilityInfo(ai, mService.mConfiguration.screenLayout,
mService.mConfiguration.smallestScreenWidthDp,
(getPackageFlags(ai.packageName)&COMPAT_FLAG_ENABLED) != 0);
//Slog.i(TAG, "*********** COMPAT FOR PKG " + ai.packageName + ": " + ci);
return ci;
}
public int computeCompatModeLocked(ApplicationInfo ai) {
boolean enabled = (getPackageFlags(ai.packageName)&COMPAT_FLAG_ENABLED) != 0;
CompatibilityInfo info = new CompatibilityInfo(ai,
mService.mConfiguration.screenLayout,
mService.mConfiguration.smallestScreenWidthDp, enabled);
if (info.alwaysSupportsScreen()) {
return ActivityManager.COMPAT_MODE_NEVER;
}
if (info.neverSupportsScreen()) {
return ActivityManager.COMPAT_MODE_ALWAYS;
}
return enabled ? ActivityManager.COMPAT_MODE_ENABLED
: ActivityManager.COMPAT_MODE_DISABLED;
}
public boolean getFrontActivityAskCompatModeLocked() {
ActivityRecord r = mService.getFocusedStack().topRunningActivityLocked(null);
if (r == null) {
return false;
}
return getPackageAskCompatModeLocked(r.packageName);
}
public boolean getPackageAskCompatModeLocked(String packageName) {
return (getPackageFlags(packageName)&COMPAT_FLAG_DONT_ASK) == 0;
}
public void setFrontActivityAskCompatModeLocked(boolean ask) {
ActivityRecord r = mService.getFocusedStack().topRunningActivityLocked(null);
if (r != null) {
setPackageAskCompatModeLocked(r.packageName, ask);
}
}
public void setPackageAskCompatModeLocked(String packageName, boolean ask) {
int curFlags = getPackageFlags(packageName);
int newFlags = ask ? (curFlags&~COMPAT_FLAG_DONT_ASK) : (curFlags|COMPAT_FLAG_DONT_ASK);
if (curFlags != newFlags) {
if (newFlags != 0) {
mPackages.put(packageName, newFlags);
} else {
mPackages.remove(packageName);
}
mHandler.removeMessages(MSG_WRITE);
Message msg = mHandler.obtainMessage(MSG_WRITE);
mHandler.sendMessageDelayed(msg, 10000);
}
}
public int getFrontActivityScreenCompatModeLocked() {
ActivityRecord r = mService.getFocusedStack().topRunningActivityLocked(null);
if (r == null) {
return ActivityManager.COMPAT_MODE_UNKNOWN;
}
return computeCompatModeLocked(r.info.applicationInfo);
}
public void setFrontActivityScreenCompatModeLocked(int mode) {
ActivityRecord r = mService.getFocusedStack().topRunningActivityLocked(null);
if (r == null) {
Slog.w(TAG, "setFrontActivityScreenCompatMode failed: no top activity");
return;
}
setPackageScreenCompatModeLocked(r.info.applicationInfo, mode);
}
public int getPackageScreenCompatModeLocked(String packageName) {
ApplicationInfo ai = null;
try {
ai = AppGlobals.getPackageManager().getApplicationInfo(packageName, 0, 0);
} catch (RemoteException e) {
}
if (ai == null) {
return ActivityManager.COMPAT_MODE_UNKNOWN;
}
return computeCompatModeLocked(ai);
}
public void setPackageScreenCompatModeLocked(String packageName, int mode) {
ApplicationInfo ai = null;
try {
ai = AppGlobals.getPackageManager().getApplicationInfo(packageName, 0, 0);
} catch (RemoteException e) {
}
if (ai == null) {
Slog.w(TAG, "setPackageScreenCompatMode failed: unknown package " + packageName);
return;
}
setPackageScreenCompatModeLocked(ai, mode);
}
private void setPackageScreenCompatModeLocked(ApplicationInfo ai, int mode) {
final String packageName = ai.packageName;
int curFlags = getPackageFlags(packageName);
boolean enable;
switch (mode) {
case ActivityManager.COMPAT_MODE_DISABLED:
enable = false;
break;
case ActivityManager.COMPAT_MODE_ENABLED:
enable = true;
break;
case ActivityManager.COMPAT_MODE_TOGGLE:
enable = (curFlags&COMPAT_FLAG_ENABLED) == 0;
break;
default:
Slog.w(TAG, "Unknown screen compat mode req #" + mode + "; ignoring");
return;
}
int newFlags = curFlags;
if (enable) {
newFlags |= COMPAT_FLAG_ENABLED;
} else {
newFlags &= ~COMPAT_FLAG_ENABLED;
}
CompatibilityInfo ci = compatibilityInfoForPackageLocked(ai);
if (ci.alwaysSupportsScreen()) {
Slog.w(TAG, "Ignoring compat mode change of " + packageName
+ "; compatibility never needed");
newFlags = 0;
}
if (ci.neverSupportsScreen()) {
Slog.w(TAG, "Ignoring compat mode change of " + packageName
+ "; compatibility always needed");
newFlags = 0;
}
if (newFlags != curFlags) {
if (newFlags != 0) {
mPackages.put(packageName, newFlags);
} else {
mPackages.remove(packageName);
}
// Need to get compatibility info in new state.
ci = compatibilityInfoForPackageLocked(ai);
mHandler.removeMessages(MSG_WRITE);
Message msg = mHandler.obtainMessage(MSG_WRITE);
mHandler.sendMessageDelayed(msg, 10000);
final ActivityStack stack = mService.getFocusedStack();
ActivityRecord starting = stack.restartPackage(packageName);
// Tell all processes that loaded this package about the change.
for (int i=mService.mLruProcesses.size()-1; i>=0; i--) {
ProcessRecord app = mService.mLruProcesses.get(i);
if (!app.pkgList.contains(packageName)) {
continue;
}
try {
if (app.thread != null) {
if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending to proc "
+ app.processName + " new compat " + ci);
app.thread.updatePackageCompatibilityInfo(packageName, ci);
}
} catch (Exception e) {
}
}
if (starting != null) {
stack.ensureActivityConfigurationLocked(starting, 0);
// And we need to make sure at this point that all other activities
// are made visible with the correct configuration.
stack.ensureActivitiesVisibleLocked(starting, 0);
}
}
}
void saveCompatModes() {
HashMap<String, Integer> pkgs;
synchronized (mService) {
pkgs = new HashMap<String, Integer>(mPackages);
}
FileOutputStream fos = null;
try {
fos = mFile.startWrite();
XmlSerializer out = new FastXmlSerializer();
out.setOutput(fos, "utf-8");
out.startDocument(null, true);
out.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true);
out.startTag(null, "compat-packages");
final IPackageManager pm = AppGlobals.getPackageManager();
final int screenLayout = mService.mConfiguration.screenLayout;
final int smallestScreenWidthDp = mService.mConfiguration.smallestScreenWidthDp;
final Iterator<Map.Entry<String, Integer>> it = pkgs.entrySet().iterator();
while (it.hasNext()) {
Map.Entry<String, Integer> entry = it.next();
String pkg = entry.getKey();
int mode = entry.getValue();
if (mode == 0) {
continue;
}
ApplicationInfo ai = null;
try {
ai = pm.getApplicationInfo(pkg, 0, 0);
} catch (RemoteException e) {
}
if (ai == null) {
continue;
}
CompatibilityInfo info = new CompatibilityInfo(ai, screenLayout,
smallestScreenWidthDp, false);
if (info.alwaysSupportsScreen()) {
continue;
}
if (info.neverSupportsScreen()) {
continue;
}
out.startTag(null, "pkg");
out.attribute(null, "name", pkg);
out.attribute(null, "mode", Integer.toString(mode));
out.endTag(null, "pkg");
}
out.endTag(null, "compat-packages");
out.endDocument();
mFile.finishWrite(fos);
} catch (java.io.IOException e1) {
Slog.w(TAG, "Error writing compat packages", e1);
if (fos != null) {
mFile.failWrite(fos);
}
}
}
}
Reference in New Issue View Git Blame Copy Permalink