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Commit 7e3a8d39 authored by Calin Juravle's avatar Calin Juravle
Browse files

Add cmd package shell command for taking profile snapshots 

Test: adb shell cmd package snapshot-profile pkgname
Bug: 74081010

(cherry picked from commit 21216c6a)

Merged-In: I96d73959cb46194667c7801767a9ebd44fd72d90
Change-Id: I96d73959cb46194667c7801767a9ebd44fd72d90
parent 4d6f581a

services/core/java/com/android/server/pm/PackageManagerShellCommand.java

+149 −9
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ import static android.content.pm.PackageManager.INTENT_FILTER_DOMAIN_VERIFICATIO 
import android.accounts.IAccountManager;

import android.app.ActivityManager;

import android.app.ActivityManagerInternal;

import android.app.Application;

import android.content.ComponentName;

import android.content.Context;

import android.content.IIntentReceiver;
@@ -53,17 +54,20 @@ import android.content.pm.PermissionInfo; 
import android.content.pm.ResolveInfo;

import android.content.pm.UserInfo;

import android.content.pm.VersionedPackage;

import android.content.pm.dex.ArtManager;

import android.content.pm.dex.DexMetadataHelper;

import android.content.pm.dex.ISnapshotRuntimeProfileCallback;

import android.content.res.AssetManager;

import android.content.res.Resources;

import android.net.Uri;

import android.os.BaseBundle;

import android.os.Binder;

import android.os.Build;

import android.os.Bundle;

import android.os.IBinder;

import android.os.IUserManager;

import android.os.ParcelFileDescriptor;

import android.os.ParcelFileDescriptor.AutoCloseInputStream;

import android.os.ParcelFileDescriptor.AutoCloseOutputStream;

import android.os.PersistableBundle;

import android.os.Process;

import android.os.RemoteException;
@@ -78,27 +82,41 @@ import android.text.TextUtils; 
import android.text.format.DateUtils;

import android.util.ArraySet;

import android.util.PrintWriterPrinter;



import com.android.internal.content.PackageHelper;

import com.android.internal.util.ArrayUtils;

import com.android.server.LocalServices;

import com.android.server.SystemConfig;



import dalvik.system.DexFile;



import libcore.io.IoUtils;



import java.io.FileDescriptor;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.PrintWriter;

import java.net.URISyntaxException;

import java.util.*;

import java.nio.file.Files;

import java.nio.file.Paths;

import java.nio.file.StandardCopyOption;

import java.nio.file.attribute.FileAttribute;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Comparator;

import java.util.LinkedList;

import java.util.List;

import java.util.Map;

import java.util.Objects;

import java.util.WeakHashMap;

import java.util.concurrent.CountDownLatch;

import java.util.concurrent.SynchronousQueue;

import java.util.concurrent.TimeUnit;

import libcore.io.IoUtils;

import libcore.io.Streams;



class PackageManagerShellCommand extends ShellCommand {

    /** Path for streaming APK content */

    private static final String STDIN_PATH = "-";

    /** Path where ART profiles snapshots are dumped for the shell user */

    private final static String ART_PROFILE_SNAPSHOT_DEBUG_LOCATION = "/data/misc/profman/";



    final IPackageManager mInterface;

    final private WeakHashMap<String, Resources> mResourceCache =
@@ -167,6 +185,8 @@ class PackageManagerShellCommand extends ShellCommand { 
                    return runDexoptJob();

                case "dump-profiles":

                    return runDumpProfiles();

                case "snapshot-profile":

                    return runSnapshotProfile();

                case "uninstall":

                    return runUninstall();

                case "clear":
@@ -1287,6 +1307,120 @@ class PackageManagerShellCommand extends ShellCommand { 
        return 0;

    }



    private int runSnapshotProfile() throws RemoteException {

        PrintWriter pw = getOutPrintWriter();



        // Parse the arguments

        final String packageName = getNextArg();

        final boolean isBootImage = "android".equals(packageName);



        String codePath = null;

        String opt;

        while ((opt = getNextArg()) != null) {

            switch (opt) {

                case "--code-path":

                    if (isBootImage) {

                        pw.write("--code-path cannot be used for the boot image.");

                        return -1;

                    }

                    codePath = getNextArg();

                    break;

                default:

                    pw.write("Unknown arg: " + opt);

                    return -1;

            }

        }



        // If no code path was explicitly requested, select the base code path.

        String baseCodePath = null;

        if (!isBootImage) {

            PackageInfo packageInfo = mInterface.getPackageInfo(packageName, /* flags */ 0,

                    /* userId */0);

            if (packageInfo == null) {

                pw.write("Package not found " + packageName);

                return -1;

            }

            baseCodePath = packageInfo.applicationInfo.getBaseCodePath();

            if (codePath == null) {

                codePath = baseCodePath;

            }

        }



        // Create the profile snapshot.

        final SnapshotRuntimeProfileCallback callback = new SnapshotRuntimeProfileCallback();

        // The calling package is needed to debug permission access.

        final String callingPackage = (Binder.getCallingUid() == Process.ROOT_UID)

                ? "root" : "com.android.shell";

        final int profileType = isBootImage

                ? ArtManager.PROFILE_BOOT_IMAGE : ArtManager.PROFILE_APPS;

        if (!mInterface.getArtManager().isRuntimeProfilingEnabled(profileType, callingPackage)) {

            pw.println("Error: Runtime profiling is not enabled");

            return -1;

        }

        mInterface.getArtManager().snapshotRuntimeProfile(profileType, packageName,

                codePath, callback, callingPackage);

        if (!callback.waitTillDone()) {

            pw.println("Error: callback not called");

            return callback.mErrCode;

        }



        // Copy the snapshot profile to the output profile file.

        try (InputStream inStream = new AutoCloseInputStream(callback.mProfileReadFd)) {

            final String outputFileSuffix = isBootImage || Objects.equals(baseCodePath, codePath)

                    ? "" : ("-" + new File(codePath).getName());

            final String outputProfilePath =

                    ART_PROFILE_SNAPSHOT_DEBUG_LOCATION + packageName + outputFileSuffix + ".prof";

            try (OutputStream outStream = new FileOutputStream(outputProfilePath)) {

                Streams.copy(inStream, outStream);

            }

        } catch (IOException e) {

            pw.println("Error when reading the profile fd: " + e.getMessage());

            e.printStackTrace(pw);

            return -1;

        }

        return 0;

    }



    private static class SnapshotRuntimeProfileCallback

            extends ISnapshotRuntimeProfileCallback.Stub {

        private boolean mSuccess = false;

        private int mErrCode = -1;

        private ParcelFileDescriptor mProfileReadFd = null;

        private CountDownLatch mDoneSignal = new CountDownLatch(1);



        @Override

        public void onSuccess(ParcelFileDescriptor profileReadFd) {

            mSuccess = true;

            try {

                // We need to dup the descriptor. We are in the same process as system server

                // and we will be receiving the same object (which will be closed on the

                // server side).

                mProfileReadFd = profileReadFd.dup();

            } catch (IOException e) {

                e.printStackTrace();

            }

            mDoneSignal.countDown();

        }



        @Override

        public void onError(int errCode) {

            mSuccess = false;

            mErrCode = errCode;

            mDoneSignal.countDown();

        }



        boolean waitTillDone() {

            boolean done = false;

            try {

                // The time-out is an arbitrary large value. Since this is a local call the result

                // will come very fast.

                done = mDoneSignal.await(10000000, TimeUnit.MILLISECONDS);

            } catch (InterruptedException ignored) {

            }

            return done && mSuccess;

        }

    }



    private int runUninstall() throws RemoteException {

        final PrintWriter pw = getOutPrintWriter();

        int flags = 0;
@@ -2761,7 +2895,13 @@ class PackageManagerShellCommand extends ShellCommand { 
        pw.println("");

        pw.println("  dump-profiles TARGET-PACKAGE");

        pw.println("    Dumps method/class profile files to");

        pw.println("    /data/misc/profman/TARGET-PACKAGE.txt");

        pw.println("    " + ART_PROFILE_SNAPSHOT_DEBUG_LOCATION + "TARGET-PACKAGE.txt");

        pw.println("");

        pw.println("  snapshot-profile TARGET-PACKAGE [--code-path path]");

        pw.println("    Take a snapshot of the package profiles to");

        pw.println("    " + ART_PROFILE_SNAPSHOT_DEBUG_LOCATION

                + "TARGET-PACKAGE[-code-path].prof");

        pw.println("    If TARGET-PACKAGE=android it will take a snapshot of the boot image");

        pw.println("");

        pw.println("  set-home-activity [--user USER_ID] TARGET-COMPONENT");

        pw.println("    Set the default home activity (aka launcher).");