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d64744cc764eb970df263aaebc44474d465686cb
frameworks_base/services/java/com/android/server/am/CompatModePackages.java
Dianne Hackborn 78a369c90f Improve process tracking. 
We now keep track of when each process is running, batched
by the current memory status of the device.  In addition,
the stats are organized by package first, and then processes
associated with each package inside of that.  Finally, we
also keep track of the overall time spent in each memory
status.

This should start to actually get us to some information
we can reach some conclusions about.  The total time spent
in each memory status gives us some indication of how much
we are running while memory is low; the new package organization
batched by memory status lets us see what packages have
what processes running when memory is low.

Change-Id: I389d62d39d115a846126cf354e4c20070d8f1180
2013-06-12 11:45:27 -07:00

386 lines
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Java
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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.containsKey(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);
}
}
}
}
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