DdmServer: add controls for OpenGL tracing

Add a new JDWP packet to allow control of OpenGL tracing.

Change-Id: Ic89e2f6299238a612df2f914581049f2cbba088c

core/java/android/app/ActivityThread.java

@@ -4277,7 +4277,7 @@ public final class ActivityThread {
 
         // Enable OpenGL tracing if required
         if (data.enableOpenGlTrace) {
-            GLUtils.enableTracing();
+            GLUtils.setTracingLevel(1);
         }
 
         /**

core/java/android/ddm/DdmHandleGlTracing.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.ddm;
+
+import android.opengl.GLUtils;
+
+import org.apache.harmony.dalvik.ddmc.Chunk;
+import org.apache.harmony.dalvik.ddmc.ChunkHandler;
+import org.apache.harmony.dalvik.ddmc.DdmServer;
+
+import java.nio.ByteBuffer;
+
+public class DdmHandleGlTracing extends ChunkHandler {
+    /** GL TRace control packets. Packet data controls starting/stopping the trace. */
+    public static final int CHUNK_GLTR = type("GLTR");
+
+    private static final DdmHandleGlTracing sInstance = new DdmHandleGlTracing();
+
+    /** singleton, do not instantiate. */
+    private DdmHandleGlTracing() {}
+
+    public static void register() {
+        DdmServer.registerHandler(CHUNK_GLTR, sInstance);
+    }
+
+    @Override
+    public void connected() {
+    }
+
+    @Override
+    public void disconnected() {
+    }
+
+    @Override
+    public Chunk handleChunk(Chunk request) {
+        int type = request.type;
+
+        if (type != CHUNK_GLTR) {
+            throw new RuntimeException("Unknown packet " + ChunkHandler.name(type));
+        }
+
+        ByteBuffer in = wrapChunk(request);
+        GLUtils.setTracingLevel(in.getInt());
+        return null;    // empty response
+    }
+}

core/java/android/ddm/DdmHandleHello.java

@@ -36,6 +36,7 @@ public class DdmHandleHello extends ChunkHandler {
 
     private static DdmHandleHello mInstance = new DdmHandleHello();
 
+    private static final String[] NATIVE_FEATURES = new String[] { "opengl-tracing" };
 
     /* singleton, do not instantiate */
     private DdmHandleHello() {}
@@ -149,21 +150,27 @@ public class DdmHandleHello extends ChunkHandler {
     private Chunk handleFEAT(Chunk request) {
         // TODO: query the VM to ensure that support for these features
         // is actually compiled in
-        final String[] features = Debug.getVmFeatureList();
+        final String[] vmFeatures = Debug.getVmFeatureList();
 
         if (false)
             Log.v("ddm-heap", "Got feature list request");
 
-        int size = 4 + 4 * features.length;
-        for (int i = features.length-1; i >= 0; i--)
-            size += features[i].length() * 2;
+        int size = 4 + 4 * (vmFeatures.length + NATIVE_FEATURES.length);
+        for (int i = vmFeatures.length-1; i >= 0; i--)
+            size += vmFeatures[i].length() * 2;
+        for (int i = NATIVE_FEATURES.length-1; i>= 0; i--)
+            size += NATIVE_FEATURES[i].length() * 2;
 
         ByteBuffer out = ByteBuffer.allocate(size);
         out.order(ChunkHandler.CHUNK_ORDER);
-        out.putInt(features.length);
-        for (int i = features.length-1; i >= 0; i--) {
-            out.putInt(features[i].length());
-            putString(out, features[i]);
+        out.putInt(vmFeatures.length + NATIVE_FEATURES.length);
+        for (int i = vmFeatures.length-1; i >= 0; i--) {
+            out.putInt(vmFeatures[i].length());
+            putString(out, vmFeatures[i]);
+        }
+        for (int i = NATIVE_FEATURES.length-1; i >= 0; i--) {
+            out.putInt(NATIVE_FEATURES[i].length());
+            putString(out, NATIVE_FEATURES[i]);
         }
 
         return new Chunk(CHUNK_FEAT, out);

core/java/android/ddm/DdmRegister.java

@@ -51,6 +51,7 @@ public class DdmRegister {
         DdmHandleNativeHeap.register();
         DdmHandleProfiling.register();
         DdmHandleExit.register();
+        DdmHandleGlTracing.register();
 
         DdmServer.registrationComplete();
     }

core/jni/android/opengl/util.cpp

@@ -557,9 +557,9 @@ void nativeUtilsClassInit(JNIEnv *env, jclass clazz)
 }
 
 extern void setGLDebugLevel(int level);
-void nativeEnableTracing(JNIEnv *env, jclass clazz)
+void setTracingLevel(JNIEnv *env, jclass clazz, jint level)
 {
-    setGLDebugLevel(1);
+    setGLDebugLevel(level);
 }
 
 static int checkFormat(SkBitmap::Config config, int format, int type)
@@ -1032,7 +1032,7 @@ static JNINativeMethod gUtilsMethods[] = {
     { "native_getType", "(Landroid/graphics/Bitmap;)I", (void*) util_getType },
     { "native_texImage2D", "(IIILandroid/graphics/Bitmap;II)I", (void*)util_texImage2D },
     { "native_texSubImage2D", "(IIIILandroid/graphics/Bitmap;II)I", (void*)util_texSubImage2D },
-    { "native_enableTracing", "()V",                    (void*)nativeEnableTracing },
+    { "setTracingLevel", "(I)V",                        (void*)setTracingLevel },
 };
 
 static JNINativeMethod gEtc1Methods[] = {

opengl/java/android/opengl/GLUtils.java

@@ -270,12 +270,10 @@ public final class GLUtils {
     }
 
     /**
-     * Enable tracing of OpenGL functions for this application.
+     * Set OpenGL Tracing level for this application.
      * @hide
      */
-    public static void enableTracing() {
-        native_enableTracing();
-    }
+    native public static void setTracingLevel(int level);
 
     native private static void nativeClassInit();
 
@@ -285,5 +283,4 @@ public final class GLUtils {
             Bitmap bitmap, int type, int border);
     native private static int native_texSubImage2D(int target, int level, int xoffset, int yoffset,
             Bitmap bitmap, int format, int type);
-    native private static void native_enableTracing();
 }