Implement a benchmark for GrResourceCache

bench/RefCntBench.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkBenchmark.h"
 #include "SkRefCnt.h"
 #include "SkThread.h"
 #include "SkWeakRefCnt.h"
 #include <memory>
 
 enum {
     M = 2
 };
 
 class RefCntBench_Stack : public SkBenchmark {
 public:
-    RefCntBench_Stack() {
-        fIsRendering = false;
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
     }
+
 protected:
     virtual const char* onGetName() {
         return "ref_cnt_stack";
     }
 
     virtual void onDraw(SkCanvas*) {
         for (int i = 0; i < this->getLoops(); ++i) {
             SkRefCnt ref;
             for (int j = 0; j < M; ++j) {
                 ref.ref();
@@ skipping 14 matching lines @@
     void operator delete(void*) { }
 
 private:
     typedef SkRefCnt INHERITED;
 };
 
 SK_DEFINE_INST_COUNT(PlacedRefCnt)
 
 class RefCntBench_Heap : public SkBenchmark {
 public:
-    RefCntBench_Heap() {
-        fIsRendering = false;
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
     }
+
 protected:
     virtual const char* onGetName() {
         return "ref_cnt_heap";
     }
 
     virtual void onDraw(SkCanvas*) {
         char memory[sizeof(PlacedRefCnt)];
         for (int i = 0; i < this->getLoops(); ++i) {
             PlacedRefCnt* ref = new (memory) PlacedRefCnt();
             for (int j = 0; j < M; ++j) {
                 ref->ref();
                 ref->unref();
             }
             ref->unref();
         }
     }
 
 private:
     typedef SkBenchmark INHERITED;
 };
 
 class RefCntBench_New : public SkBenchmark {
 public:
-    RefCntBench_New() {
-        fIsRendering = false;
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
     }
+
 protected:
     virtual const char* onGetName() {
         return "ref_cnt_new";
     }
 
     virtual void onDraw(SkCanvas*) {
         for (int i = 0; i < this->getLoops(); ++i) {
             SkRefCnt* ref = new SkRefCnt();
             for (int j = 0; j < M; ++j) {
                 ref->ref();
                 ref->unref();
             }
             ref->unref();
         }
     }
 
 private:
     typedef SkBenchmark INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 class WeakRefCntBench_Stack : public SkBenchmark {
 public:
-    WeakRefCntBench_Stack() {
-        fIsRendering = false;
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
     }
+
 protected:
     virtual const char* onGetName() {
         return "ref_cnt_stack_weak";
     }
 
     virtual void onDraw(SkCanvas*) {
         for (int i = 0; i < this->getLoops(); ++i) {
             SkWeakRefCnt ref;
             for (int j = 0; j < M; ++j) {
                 ref.ref();
                 ref.unref();
             }
         }
     }
 
 private:
     typedef SkBenchmark INHERITED;
 };
 
 class PlacedWeakRefCnt : public SkWeakRefCnt {
 public:
     PlacedWeakRefCnt() : SkWeakRefCnt() { }
     void operator delete(void*) { }
 };
 
 class WeakRefCntBench_Heap : public SkBenchmark {
 public:
-    WeakRefCntBench_Heap() {
-        fIsRendering = false;
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
     }
+
 protected:
     virtual const char* onGetName() {
         return "ref_cnt_heap_weak";
     }
 
     virtual void onDraw(SkCanvas*) {
         char memory[sizeof(PlacedWeakRefCnt)];
         for (int i = 0; i < this->getLoops(); ++i) {
             PlacedWeakRefCnt* ref = new (memory) PlacedWeakRefCnt();
             for (int j = 0; j < M; ++j) {
                 ref->ref();
                 ref->unref();
             }
             ref->unref();
         }
     }
 
 private:
     typedef SkBenchmark INHERITED;
 };
 
 class WeakRefCntBench_New : public SkBenchmark {
 public:
-    WeakRefCntBench_New() {
-        fIsRendering = false;
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
     }
+
 protected:
     virtual const char* onGetName() {
         return "ref_cnt_new_weak";
     }
 
     virtual void onDraw(SkCanvas*) {
         for (int i = 0; i < this->getLoops(); ++i) {
             SkWeakRefCnt* ref = new SkWeakRefCnt();
             for (int j = 0; j < M; ++j) {
                 ref->ref();
                 ref->unref();
             }
             ref->unref();
         }
     }
 
 private:
     typedef SkBenchmark INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 DEF_BENCH( return new RefCntBench_Stack(); )
 DEF_BENCH( return new RefCntBench_Heap(); )
 DEF_BENCH( return new RefCntBench_New(); )
 
 DEF_BENCH( return new WeakRefCntBench_Stack(); )
 DEF_BENCH( return new WeakRefCntBench_Heap(); )
 DEF_BENCH( return new WeakRefCntBench_New(); )