Add Batch logging

src/gpu/GrTargetCommands.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTargetCommands_DEFINED
 #define GrTargetCommands_DEFINED
 
@@ skipping 25 matching lines @@
             kSetState_CmdType          = 2,
             kClear_CmdType             = 3,
             kClearStencil_CmdType      = 4,
             kCopySurface_CmdType       = 5,
             kDrawPath_CmdType          = 6,
             kDrawPaths_CmdType         = 7,
             kDrawBatch_CmdType         = 8,
             kXferBarrier_CmdType       = 9,
         };
 
-        Cmd(CmdType type) : fMarkerID(-1), fType(type) {}
+        Cmd(CmdType type)
+            : fMarkerID(-1)
+            , fType(type)
+#if GR_BATCH_SPEW
+            , fUniqueID(GenID(&gUniqueID))
+#endif
+{}
         virtual ~Cmd() {}
 
         virtual void execute(GrGpu*) = 0;
 
         CmdType type() const { return fType; }
 
         // trace markers
         bool isTraced() const { return -1 != fMarkerID; }
         void setMarkerID(int markerID) { SkASSERT(-1 == fMarkerID); fMarkerID = markerID; }
         int markerID() const { return fMarkerID; }
+        GrBATCH_SPEW(uint32_t uniqueID() const { return fUniqueID;} )
 
     private:
+        // TODO move this to a common header so it can be shared with GrBatch
+        static uint32_t GenID(int32_t* idCounter) {
+            uint32_t id = static_cast<uint32_t>(sk_atomic_inc(idCounter)) + 1;
+            if (!id) {
+                SkFAIL("This should never wrap\n");
+            }
+            return id;
+        }
         int              fMarkerID;
         CmdType          fType;
+        GrBATCH_SPEW(uint32_t fUniqueID);
+        GrBATCH_SPEW(static int32_t gUniqueID;)
     };
 
     void reset();
     void flush(GrBufferedDrawTarget*);
 
 private:
     friend class GrCommandBuilder;
     friend class GrBufferedDrawTarget; // This goes away when State becomes just a pipeline
     friend class GrReorderCommandBuilder;
 
@@ skipping 191 matching lines @@
 
     CmdBuffer* cmdBuffer() { return &fCmdBuffer; }
     GrBatchTarget* batchTarget() { return &fBatchTarget; }
 
     CmdBuffer                           fCmdBuffer;
     GrBatchTarget                       fBatchTarget;
 };
 
 #endif