Add a background timing thread to kilobench

include/gpu/gl/SkGLContext.h

 
 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkGLContext_DEFINED
 #define SkGLContext_DEFINED
 
@@ skipping 67 matching lines @@
     void testAbandon();
 
     /**
      * Creates a new GL context of the same type and makes the returned context current
      * (if not null).
      */
     virtual SkGLContext* createNew() const { return nullptr; }
 
     class GLFenceSync;  // SkGpuFenceSync implementation that uses the OpenGL functionality.
 
+    /*
+     * returns the fencesync object owned by this SkGLContext
+     */
+    SkGpuFenceSync* fenceSync() { return fFenceSync.get(); }
+
 protected:
     SkGLContext();
 
     /*
      * Methods that sublcasses must call from their constructors and destructors.
      */
     void init(const GrGLInterface*, SkGpuFenceSync* = NULL);
     void teardown();
 
     /*
@@ skipping 33 matching lines @@
  * SK_GL(glCtx, GenTextures(1, &texID));
  */
 #define SK_GL(ctx, X) (ctx).gl()->fFunctions.f ## X;    \
                       SkASSERT(0 == (ctx).gl()->fFunctions.fGetError())
 #define SK_GL_RET(ctx, RET, X) (RET) = (ctx).gl()->fFunctions.f ## X;    \
                   SkASSERT(0 == (ctx).gl()->fFunctions.fGetError())
 #define SK_GL_NOERRCHECK(ctx, X) (ctx).gl()->fFunctions.f ## X
 #define SK_GL_RET_NOERRCHECK(ctx, RET, X) (RET) = (ctx).gl()->fFunctions.f ## X
 
 #endif