Add plumbing for dumping database info using dumpsys.

Change-Id: I51b0364c3d3d41aa38a759fbce48e625fff1b2dd

4 files changed, 48 insertions, 0 deletions

diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index 9e88bc6..bac3c6c 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -65,6 +65,7 @@ import android.util.DisplayMetrics;
 import android.util.EventLog;
 import android.util.Log;
 import android.util.LogPrinter;
+import android.util.PrintWriterPrinter;
 import android.util.Slog;
 import android.view.Display;
 import android.view.HardwareRenderer;
@@ -1039,6 +1040,14 @@ public final class ActivityThread {
             WindowManagerImpl.getDefault().dumpGfxInfo(fd);
         }
 
+        @Override
+        public void dumpDbInfo(FileDescriptor fd, String[] args) {
+            PrintWriter pw = new PrintWriter(new FileOutputStream(fd));
+            PrintWriterPrinter printer = new PrintWriterPrinter(pw);
+            SQLiteDebug.dump(printer, args);
+            pw.flush();
+        }
+
         private void printRow(PrintWriter pw, String format, Object...objs) {
             pw.println(String.format(format, objs));
         }
diff --git a/core/java/android/app/ApplicationThreadNative.java b/core/java/android/app/ApplicationThreadNative.java
index e6d28ef..e75d7b4 100644
--- a/core/java/android/app/ApplicationThreadNative.java
+++ b/core/java/android/app/ApplicationThreadNative.java
@@ -554,6 +554,26 @@ public abstract class ApplicationThreadNative extends Binder
             reply.writeNoException();
             return true;
         }
+
+        case DUMP_DB_INFO_TRANSACTION:
+        {
+            data.enforceInterface(IApplicationThread.descriptor);
+            ParcelFileDescriptor fd = data.readFileDescriptor();
+            String[] args = data.readStringArray();
+            if (fd != null) {
+                try {
+                    dumpDbInfo(fd.getFileDescriptor(), args);
+                } finally {
+                    try {
+                        fd.close();
+                    } catch (IOException e) {
+                        // swallowed, not propagated back to the caller
+                    }
+                }
+            }
+            reply.writeNoException();
+            return true;
+        }
         }
 
         return super.onTransact(code, data, reply, flags);
@@ -1131,4 +1151,13 @@ class ApplicationThreadProxy implements IApplicationThread {
         mRemote.transact(DUMP_GFX_INFO_TRANSACTION, data, null, IBinder.FLAG_ONEWAY);
         data.recycle();
     }
+
+    public void dumpDbInfo(FileDescriptor fd, String[] args) throws RemoteException {
+        Parcel data = Parcel.obtain();
+        data.writeInterfaceToken(IApplicationThread.descriptor);
+        data.writeFileDescriptor(fd);
+        data.writeStringArray(args);
+        mRemote.transact(DUMP_DB_INFO_TRANSACTION, data, null, IBinder.FLAG_ONEWAY);
+        data.recycle();
+    }
 }
diff --git a/core/java/android/app/IApplicationThread.java b/core/java/android/app/IApplicationThread.java
index a362778..6ad1736 100644
--- a/core/java/android/app/IApplicationThread.java
+++ b/core/java/android/app/IApplicationThread.java
@@ -127,6 +127,7 @@ public interface IApplicationThread extends IInterface {
     Debug.MemoryInfo dumpMemInfo(FileDescriptor fd, boolean checkin, boolean all,
             String[] args) throws RemoteException;
     void dumpGfxInfo(FileDescriptor fd, String[] args) throws RemoteException;
+    void dumpDbInfo(FileDescriptor fd, String[] args) throws RemoteException;
 
     String descriptor = "android.app.IApplicationThread";
 
@@ -174,4 +175,5 @@ public interface IApplicationThread extends IInterface {
     int DUMP_MEM_INFO_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+42;
     int DUMP_GFX_INFO_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+43;
     int DUMP_PROVIDER_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+44;
+    int DUMP_DB_INFO_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+45;
 }
diff --git a/core/java/android/database/sqlite/SQLiteDebug.java b/core/java/android/database/sqlite/SQLiteDebug.java
index cc057e0..029bb4a 100644
--- a/core/java/android/database/sqlite/SQLiteDebug.java
+++ b/core/java/android/database/sqlite/SQLiteDebug.java
@@ -21,6 +21,7 @@ import java.util.ArrayList;
 import android.os.Build;
 import android.os.SystemProperties;
 import android.util.Log;
+import android.util.Printer;
 
 /**
  * Provides debugging info about all SQLite databases running in the current process.
@@ -181,6 +182,13 @@ public final class SQLiteDebug {
     }
 
     /**
+     * Dumps detailed information about all databases used by the process.
+     * @param printer The printer for dumping database state.
+     */
+    public static void dump(Printer printer, String[] args) {
+    }
+
+    /**
      * Gathers statistics about all pagers in the current process.
      */
     public static native void getPagerStats(PagerStats stats);