diff --git a/libs/surfaceflinger/Layer.cpp b/libs/surfaceflinger/Layer.cpp
index 1a66970..566428f 100644
--- a/libs/surfaceflinger/Layer.cpp
+++ b/libs/surfaceflinger/Layer.cpp
@@ -47,11 +47,6 @@
 
 // ---------------------------------------------------------------------------
 
-const uint32_t Layer::typeInfo = LayerBaseClient::typeInfo | 4;
-const char* const Layer::typeID = "Layer";
-
-// ---------------------------------------------------------------------------
-
 Layer::Layer(SurfaceFlinger* flinger, DisplayID display, 
         const sp<Client>& c, int32_t i)
     :   LayerBaseClient(flinger, display, c, i),
@@ -572,7 +567,7 @@
     }
     if (visibleRegionScreen.isEmpty()) {
         // an invisible layer should not hold a freeze-lock
-        // (because it may never be updated and thereore never release it)
+        // (because it may never be updated and therefore never release it)
         mFreezeLock.clear();
     }
 }
@@ -585,6 +580,38 @@
             this, mFrontBufferIndex);
 }
 
+
+void Layer::dump(String8& result, char* buffer, size_t SIZE) const
+{
+    LayerBaseClient::dump(result, buffer, SIZE);
+
+    SharedBufferStack::Statistics stats = lcblk->getStats();
+    result.append( lcblk->dump("      ") );
+    sp<const GraphicBuffer> buf0(getBuffer(0));
+    sp<const GraphicBuffer> buf1(getBuffer(1));
+    uint32_t w0=0, h0=0, s0=0;
+    uint32_t w1=0, h1=0, s1=0;
+    if (buf0 != 0) {
+        w0 = buf0->getWidth();
+        h0 = buf0->getHeight();
+        s0 = buf0->getStride();
+    }
+    if (buf1 != 0) {
+        w1 = buf1->getWidth();
+        h1 = buf1->getHeight();
+        s1 = buf1->getStride();
+    }
+    snprintf(buffer, SIZE,
+            "      "
+            "format=%2d, [%3ux%3u:%3u] [%3ux%3u:%3u],"
+            " freezeLock=%p, dq-q-time=%u us\n",
+            pixelFormat(),
+            w0, h0, s0, w1, h1, s1,
+            getFreezeLock().get(), stats.totalTime);
+
+    result.append(buffer);
+}
+
 // ---------------------------------------------------------------------------
 
 Layer::SurfaceLayer::SurfaceLayer(const sp<SurfaceFlinger>& flinger,
diff --git a/libs/surfaceflinger/Layer.h b/libs/surfaceflinger/Layer.h
index 743afb4..98e30d7 100644
--- a/libs/surfaceflinger/Layer.h
+++ b/libs/surfaceflinger/Layer.h
@@ -46,11 +46,6 @@
 class Layer : public LayerBaseClient
 {
 public:    
-    static const uint32_t typeInfo;
-    static const char* const typeID;
-    virtual char const* getTypeID() const { return typeID; }
-    virtual uint32_t getTypeInfo() const { return typeInfo; }
-    
                  Layer(SurfaceFlinger* flinger, DisplayID display,
                          const sp<Client>& client, int32_t i);
 
@@ -73,7 +68,7 @@
     virtual status_t ditch();
     
     // only for debugging
-    inline sp<GraphicBuffer> getBuffer(int i) { return mBuffers[i]; }
+    inline sp<GraphicBuffer> getBuffer(int i) const { return mBuffers[i]; }
     // only for debugging
     inline const sp<FreezeLock>&  getFreezeLock() const { return mFreezeLock; }
     // only for debugging
@@ -81,6 +76,11 @@
     // only for debugging
     inline int getFrontBufferIndex() const { return mFrontBufferIndex; }
 
+    virtual const char* getTypeId() const { return "Layer"; }
+
+protected:
+    virtual void dump(String8& result, char* scratch, size_t size) const;
+
 private:
     inline sp<GraphicBuffer> getFrontBufferLocked() {
         return mBuffers[mFrontBufferIndex];
diff --git a/libs/surfaceflinger/LayerBase.cpp b/libs/surfaceflinger/LayerBase.cpp
index 7feccda..48b0e47 100644
--- a/libs/surfaceflinger/LayerBase.cpp
+++ b/libs/surfaceflinger/LayerBase.cpp
@@ -38,14 +38,6 @@
 
 // ---------------------------------------------------------------------------
 
-const uint32_t LayerBase::typeInfo = 1;
-const char* const LayerBase::typeID = "LayerBase";
-
-const uint32_t LayerBaseClient::typeInfo = LayerBase::typeInfo | 2;
-const char* const LayerBaseClient::typeID = "LayerBaseClient";
-
-// ---------------------------------------------------------------------------
-
 LayerBase::LayerBase(SurfaceFlinger* flinger, DisplayID display)
     : dpy(display), contentDirty(false),
       mFlinger(flinger),
@@ -681,6 +673,22 @@
     return err;
 }
 
+void LayerBase::dump(String8& result, char* buffer, size_t SIZE) const
+{
+    const Layer::State& s(drawingState());
+    snprintf(buffer, SIZE,
+            "+ %s %p\n"
+            "      "
+            "z=%9d, pos=(%4d,%4d), size=(%4d,%4d), "
+            "needsBlending=%1d, needsDithering=%1d, invalidate=%1d, "
+            "alpha=0x%02x, flags=0x%08x, tr=[%.2f, %.2f][%.2f, %.2f]\n",
+            getTypeId(), this, s.z, tx(), ty(), s.w, s.h,
+            needsBlending(), needsDithering(), contentDirty,
+            s.alpha, s.flags,
+            s.transform[0][0], s.transform[0][1],
+            s.transform[1][0], s.transform[1][1]);
+    result.append(buffer);
+}
 
 // ---------------------------------------------------------------------------
 
@@ -713,13 +721,13 @@
     delete lcblk;
 }
 
-int32_t LayerBaseClient::serverIndex() const 
+ssize_t LayerBaseClient::serverIndex() const
 {
     sp<Client> client(this->client.promote());
     if (client != 0) {
         return (client->cid<<16)|mIndex;
     }
-    return 0xFFFF0000 | mIndex;
+    return ssize_t(0xFFFF0000 | mIndex);
 }
 
 sp<LayerBaseClient::Surface> LayerBaseClient::getSurface()
@@ -748,6 +756,21 @@
     lcblk->setStatus(NO_INIT);
 }
 
+void LayerBaseClient::dump(String8& result, char* buffer, size_t SIZE) const
+{
+    LayerBase::dump(result, buffer, SIZE);
+
+    sp<Client> client(this->client.promote());
+    snprintf(buffer, SIZE,
+            "      name=%s\n"
+            "      id=0x%08x, client=0x%08x, identity=%u\n",
+            getName().string(),
+            clientIndex(), client.get() ? client->cid : 0,
+            getIdentity());
+
+    result.append(buffer);
+}
+
 // ---------------------------------------------------------------------------
 
 LayerBaseClient::Surface::Surface(
diff --git a/libs/surfaceflinger/LayerBase.h b/libs/surfaceflinger/LayerBase.h
index 4ff1927..219a53c 100644
--- a/libs/surfaceflinger/LayerBase.h
+++ b/libs/surfaceflinger/LayerBase.h
@@ -51,35 +51,9 @@
 
 class LayerBase : public RefBase
 {
-    // poor man's dynamic_cast below
-    template<typename T>
-    struct getTypeInfoOfAnyType {
-        static uint32_t get() { return T::typeInfo; }
-    };
-
-    template<typename T>
-    struct getTypeInfoOfAnyType<T*> {
-        static uint32_t get() { return getTypeInfoOfAnyType<T>::get(); }
-    };
-
 public:
-    static const uint32_t typeInfo;
-    static const char* const typeID;
-    virtual char const* getTypeID() const { return typeID; }
-    virtual uint32_t getTypeInfo() const { return typeInfo; }
-    
-    template<typename T>
-    static T dynamicCast(LayerBase* base) {
-        uint32_t mostDerivedInfo = base->getTypeInfo();
-        uint32_t castToInfo = getTypeInfoOfAnyType<T>::get();
-        if ((mostDerivedInfo & castToInfo) == castToInfo)
-            return static_cast<T>(base);
-        return 0;
-    }
+            LayerBase(SurfaceFlinger* flinger, DisplayID display);
 
-    
-    LayerBase(SurfaceFlinger* flinger, DisplayID display);
-    
     DisplayID           dpy;
     mutable bool        contentDirty;
             Region      visibleRegionScreen;
@@ -125,6 +99,9 @@
 
             void invalidate();
 
+    virtual const char* getTypeId() const { return "LayerBase"; }
+    virtual ssize_t serverIndex() const { return -1; }
+
     /**
      * draw - performs some global clipping optimizations
      * and calls onDraw().
@@ -217,7 +194,10 @@
      *  current list */
     virtual void onRemoved() { };
     
-    
+    /** always call base class first */
+    virtual void dump(String8& result, char* scratch, size_t size) const;
+
+
     enum { // flags for doTransaction()
         eVisibleRegion      = 0x00000002,
     };
@@ -313,10 +293,6 @@
 {
 public:
     class Surface;
-   static const uint32_t typeInfo;
-    static const char* const typeID;
-    virtual char const* getTypeID() const { return typeID; }
-    virtual uint32_t getTypeInfo() const { return typeInfo; }
 
     // lcblk is (almost) only accessed from the main SF thread, in the places
     // where it's not, a reference to Client must be held
@@ -331,14 +307,12 @@
 
     inline  uint32_t    getIdentity() const { return mIdentity; }
     inline  int32_t     clientIndex() const { return mIndex; }
-            int32_t     serverIndex() const;
-
    
             sp<Surface> getSurface();
     virtual sp<Surface> createSurface() const;
-    
-    virtual void onRemoved();
-
+    virtual ssize_t     serverIndex() const;
+    virtual void        onRemoved();
+    virtual const char* getTypeId() const { return "LayerBaseClient"; }
 
     class Surface : public BnSurface 
     {
@@ -373,8 +347,11 @@
 
     friend class Surface;
 
+protected:
+    virtual void dump(String8& result, char* scratch, size_t size) const;
+
 private:
-                int32_t         mIndex;
+    int32_t         mIndex;
     mutable     Mutex           mLock;
     mutable     wp<Surface>     mClientSurface;
     // only read
diff --git a/libs/surfaceflinger/LayerBlur.cpp b/libs/surfaceflinger/LayerBlur.cpp
index ef91344..2d77876 100644
--- a/libs/surfaceflinger/LayerBlur.cpp
+++ b/libs/surfaceflinger/LayerBlur.cpp
@@ -33,11 +33,6 @@
 namespace android {
 // ---------------------------------------------------------------------------
 
-const uint32_t LayerBlur::typeInfo = LayerBaseClient::typeInfo | 8;
-const char* const LayerBlur::typeID = "LayerBlur";
-
-// ---------------------------------------------------------------------------
-
 LayerBlur::LayerBlur(SurfaceFlinger* flinger, DisplayID display,
         const sp<Client>& client, int32_t i)
     : LayerBaseClient(flinger, display, client, i), mCacheDirty(true),
diff --git a/libs/surfaceflinger/LayerBlur.h b/libs/surfaceflinger/LayerBlur.h
index 5b63dec..380f587 100644
--- a/libs/surfaceflinger/LayerBlur.h
+++ b/libs/surfaceflinger/LayerBlur.h
@@ -31,11 +31,6 @@
 class LayerBlur : public LayerBaseClient
 {
 public:    
-    static const uint32_t typeInfo;
-    static const char* const typeID;
-    virtual char const* getTypeID() const { return typeID; }
-    virtual uint32_t getTypeInfo() const { return typeInfo; }
-    
                 LayerBlur(SurfaceFlinger* flinger, DisplayID display,
                         const sp<Client>& client, int32_t i);
         virtual ~LayerBlur();
@@ -43,6 +38,7 @@
     virtual void onDraw(const Region& clip) const;
     virtual bool needsBlending() const  { return true; }
     virtual bool isSecure() const       { return false; }
+    virtual const char* getTypeId() const { return "LayerBlur"; }
 
     virtual uint32_t doTransaction(uint32_t flags);
     virtual void setVisibleRegion(const Region& visibleRegion);
diff --git a/libs/surfaceflinger/LayerBuffer.cpp b/libs/surfaceflinger/LayerBuffer.cpp
index 5c21593..0041a0f 100644
--- a/libs/surfaceflinger/LayerBuffer.cpp
+++ b/libs/surfaceflinger/LayerBuffer.cpp
@@ -39,8 +39,6 @@
 
 // ---------------------------------------------------------------------------
 
-const uint32_t LayerBuffer::typeInfo = LayerBaseClient::typeInfo | 0x20;
-const char* const LayerBuffer::typeID = "LayerBuffer";
 gralloc_module_t const* LayerBuffer::sGrallocModule = 0;
 
 // ---------------------------------------------------------------------------
diff --git a/libs/surfaceflinger/LayerBuffer.h b/libs/surfaceflinger/LayerBuffer.h
index b176623..243cc43 100644
--- a/libs/surfaceflinger/LayerBuffer.h
+++ b/libs/surfaceflinger/LayerBuffer.h
@@ -52,17 +52,13 @@
     };
 
 public:
-    static const uint32_t typeInfo;
-    static const char* const typeID;
-    virtual char const* getTypeID() const { return typeID; }
-    virtual uint32_t getTypeInfo() const { return typeInfo; }
-
             LayerBuffer(SurfaceFlinger* flinger, DisplayID display,
                     const sp<Client>& client, int32_t i);
         virtual ~LayerBuffer();
 
     virtual void onFirstRef();
     virtual bool needsBlending() const;
+    virtual const char* getTypeId() const { return "LayerBuffer"; }
 
     virtual sp<LayerBaseClient::Surface> createSurface() const;
     virtual status_t ditch();
diff --git a/libs/surfaceflinger/LayerDim.cpp b/libs/surfaceflinger/LayerDim.cpp
index fd61e30..568fedb 100644
--- a/libs/surfaceflinger/LayerDim.cpp
+++ b/libs/surfaceflinger/LayerDim.cpp
@@ -30,9 +30,6 @@
 namespace android {
 // ---------------------------------------------------------------------------
 
-const uint32_t LayerDim::typeInfo = LayerBaseClient::typeInfo | 0x10;
-const char* const LayerDim::typeID = "LayerDim";
-
 bool LayerDim::sUseTexture;
 GLuint LayerDim::sTexId;
 EGLImageKHR LayerDim::sImage;
diff --git a/libs/surfaceflinger/LayerDim.h b/libs/surfaceflinger/LayerDim.h
index d4672a1..19a9990 100644
--- a/libs/surfaceflinger/LayerDim.h
+++ b/libs/surfaceflinger/LayerDim.h
@@ -37,11 +37,6 @@
     static int32_t sWidth;
     static int32_t sHeight;
 public:    
-    static const uint32_t typeInfo;
-    static const char* const typeID;
-    virtual char const* getTypeID() const { return typeID; }
-    virtual uint32_t getTypeInfo() const { return typeInfo; }
-    
                 LayerDim(SurfaceFlinger* flinger, DisplayID display,
                         const sp<Client>& client, int32_t i);
         virtual ~LayerDim();
@@ -49,6 +44,7 @@
     virtual void onDraw(const Region& clip) const;
     virtual bool needsBlending() const  { return true; }
     virtual bool isSecure() const       { return false; }
+    virtual const char* getTypeId() const { return "LayerDim"; }
 
     static void initDimmer(SurfaceFlinger* flinger, uint32_t w, uint32_t h);
 };
diff --git a/libs/surfaceflinger/SurfaceFlinger.cpp b/libs/surfaceflinger/SurfaceFlinger.cpp
index ed75d8e..62d829b 100644
--- a/libs/surfaceflinger/SurfaceFlinger.cpp
+++ b/libs/surfaceflinger/SurfaceFlinger.cpp
@@ -1078,15 +1078,15 @@
 
 status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer)
 {
-    if (layer == 0)
-        return BAD_VALUE;
     ssize_t i = mCurrentState.layersSortedByZ.add(
                 layer, &LayerBase::compareCurrentStateZ);
-    sp<LayerBaseClient> lbc = LayerBase::dynamicCast< LayerBaseClient* >(layer.get());
-    if (lbc != 0) {
-        mLayerMap.add(lbc->serverIndex(), lbc);
-    }
-    return NO_ERROR;
+    return (i < 0) ? status_t(i) : status_t(NO_ERROR);
+}
+
+status_t SurfaceFlinger::addClientLayer_l(const sp<LayerBaseClient>& lbc)
+{
+    ssize_t serverIndex = lbc->serverIndex();
+    return mLayerMap.add(serverIndex, lbc);
 }
 
 status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase)
@@ -1094,10 +1094,9 @@
     ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase);
     if (index >= 0) {
         mLayersRemoved = true;
-        sp<LayerBaseClient> layer =
-            LayerBase::dynamicCast< LayerBaseClient* >(layerBase.get());
-        if (layer != 0) {
-            mLayerMap.removeItem(layer->serverIndex());
+        ssize_t serverIndex = layerBase->serverIndex();
+        if (serverIndex >= 0) {
+            mLayerMap.removeItem(serverIndex);
         }
         return NO_ERROR;
     }
@@ -1306,6 +1305,7 @@
     if (LIKELY(err == NO_ERROR)) {
         layer->initStates(w, h, flags);
         addLayer_l(layer);
+        addClientLayer_l(layer);
     } else {
         LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err));
         layer.clear();
@@ -1320,6 +1320,7 @@
     sp<LayerBlur> layer = new LayerBlur(this, display, client, id);
     layer->initStates(w, h, flags);
     addLayer_l(layer);
+    addClientLayer_l(layer);
     return layer;
 }
 
@@ -1330,6 +1331,7 @@
     sp<LayerDim> layer = new LayerDim(this, display, client, id);
     layer->initStates(w, h, flags);
     addLayer_l(layer);
+    addClientLayer_l(layer);
     return layer;
 }
 
@@ -1340,6 +1342,7 @@
     sp<LayerBuffer> layer = new LayerBuffer(this, display, client, id);
     layer->initStates(w, h, flags);
     addLayer_l(layer);
+    addClientLayer_l(layer);
     return layer;
 }
 
@@ -1511,83 +1514,17 @@
             result.append(buffer);
         }
 
-        size_t s = mClientsMap.size();
-        char name[64];
-        for (size_t i=0 ; i<s ; i++) {
-            sp<Client> client = mClientsMap.valueAt(i);
-            sprintf(name, "  Client (id=0x%08x)", client->cid);
-            client->dump(name);
-        }
         const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
         const size_t count = currentLayers.size();
         for (size_t i=0 ; i<count ; i++) {
-            /*** LayerBase ***/
-            const sp<LayerBase>& layer = currentLayers[i];
-            const Layer::State& s = layer->drawingState();
-            snprintf(buffer, SIZE,
-                    "+ %s %p\n"
-                    "      "
-                    "z=%9d, pos=(%4d,%4d), size=(%4d,%4d), "
-                    "needsBlending=%1d, needsDithering=%1d, invalidate=%1d, "
-                    "alpha=0x%02x, flags=0x%08x, tr=[%.2f, %.2f][%.2f, %.2f]\n",
-                    layer->getTypeID(), layer.get(),
-                    s.z, layer->tx(), layer->ty(), s.w, s.h,
-                    layer->needsBlending(), layer->needsDithering(),
-                    layer->contentDirty,
-                    s.alpha, s.flags,
-                    s.transform[0][0], s.transform[0][1],
-                    s.transform[1][0], s.transform[1][1]);
-            result.append(buffer);
-            buffer[0] = 0;
-            /*** LayerBaseClient ***/
-            sp<LayerBaseClient> lbc =
-                LayerBase::dynamicCast< LayerBaseClient* >(layer.get());
-            if (lbc != 0) {
-                sp<Client> client(lbc->client.promote());
-                snprintf(buffer, SIZE,
-                        "      name=%s\n", lbc->getName().string());
-                result.append(buffer);
-                snprintf(buffer, SIZE,
-                        "      id=0x%08x, client=0x%08x, identity=%u\n",
-                        lbc->clientIndex(), client.get() ? client->cid : 0,
-                        lbc->getIdentity());
-
-                result.append(buffer);
-                buffer[0] = 0;
-            }
-            /*** Layer ***/
-            sp<Layer> l = LayerBase::dynamicCast< Layer* >(layer.get());
-            if (l != 0) {
-                SharedBufferStack::Statistics stats = l->lcblk->getStats();
-                result.append( l->lcblk->dump("      ") );
-                sp<const GraphicBuffer> buf0(l->getBuffer(0));
-                sp<const GraphicBuffer> buf1(l->getBuffer(1));
-                uint32_t w0=0, h0=0, s0=0;
-                uint32_t w1=0, h1=0, s1=0;
-                if (buf0 != 0) {
-                    w0 = buf0->getWidth();
-                    h0 = buf0->getHeight();
-                    s0 = buf0->getStride();
-                }
-                if (buf1 != 0) {
-                    w1 = buf1->getWidth();
-                    h1 = buf1->getHeight();
-                    s1 = buf1->getStride();
-                }
-                snprintf(buffer, SIZE,
-                        "      "
-                        "format=%2d, [%3ux%3u:%3u] [%3ux%3u:%3u],"
-                        " freezeLock=%p, dq-q-time=%u us\n",
-                        l->pixelFormat(),
-                        w0, h0, s0, w1, h1, s1,
-                        l->getFreezeLock().get(), stats.totalTime);
-                result.append(buffer);
-                buffer[0] = 0;
-            }
+            const sp<LayerBase>& layer(currentLayers[i]);
+            layer->dump(result, buffer, SIZE);
+            const Layer::State& s(layer->drawingState());
             s.transparentRegion.dump(result, "transparentRegion");
             layer->transparentRegionScreen.dump(result, "transparentRegionScreen");
             layer->visibleRegionScreen.dump(result, "visibleRegionScreen");
         }
+
         mWormholeRegion.dump(result, "WormholeRegion");
         const DisplayHardware& hw(graphicPlane(0).displayHardware());
         snprintf(buffer, SIZE,
@@ -1600,16 +1537,19 @@
                 "  last transaction time     : %f us\n",
                 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0);
         result.append(buffer);
+
         if (inSwapBuffersDuration || !locked) {
             snprintf(buffer, SIZE, "  eglSwapBuffers time: %f us\n",
                     inSwapBuffersDuration/1000.0);
             result.append(buffer);
         }
+
         if (inTransactionDuration || !locked) {
             snprintf(buffer, SIZE, "  transaction time: %f us\n",
                     inTransactionDuration/1000.0);
             result.append(buffer);
         }
+
         snprintf(buffer, SIZE, "  client count: %d\n", mClientsMap.size());
         result.append(buffer);
         const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
@@ -1772,10 +1712,6 @@
     return lbc;
 }
 
-void Client::dump(const char* what)
-{
-}
-
 // ---------------------------------------------------------------------------
 #if 0
 #pragma mark -
diff --git a/libs/surfaceflinger/SurfaceFlinger.h b/libs/surfaceflinger/SurfaceFlinger.h
index d75dc15..9c8de51 100644
--- a/libs/surfaceflinger/SurfaceFlinger.h
+++ b/libs/surfaceflinger/SurfaceFlinger.h
@@ -73,7 +73,6 @@
 
     inline  bool                    isValid(int32_t i) const;
     sp<LayerBaseClient>             getLayerUser(int32_t i) const;
-    void                            dump(const char* what);
     
     const Vector< wp<LayerBaseClient> >& getLayers() const { 
         return mLayers; 
@@ -281,6 +280,7 @@
             void        destroyConnection(ClientID cid);
             sp<LayerBaseClient> getLayerUser_l(SurfaceID index) const;
             status_t    addLayer_l(const sp<LayerBase>& layer);
+            status_t    addClientLayer_l(const sp<LayerBaseClient>& lbc);
             status_t    removeLayer_l(const sp<LayerBase>& layer);
             status_t    purgatorizeLayer_l(const sp<LayerBase>& layer);
             void        free_resources_l();