add bench for sk_memset16/32

bench/MemsetBench.cpp

Index: bench/MemsetBench.cpp
diff --git a/bench/MemsetBench.cpp b/bench/MemsetBench.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..29370818a3acae452bad5b8a0ab7280d7d2d28a8
--- /dev/null
+++ b/bench/MemsetBench.cpp
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2013 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 "SkCanvas.h"
+#include "SkUtils.h"
+#include "SkString.h"
+
+class MemsetBench : public SkBenchmark {
+    SkString    fName;
+
+protected:
+    size_t      fMinSize;
+    size_t      fMaxSize;
+    enum {
+        kLoop = 100,
+        kBufferSize = 10000,
+        VALUE32 = 0x12345678,
+        VALUE16 = 0x1234
+    };
+
+    enum MemsetType {
+        MEMSET16 = 16,
+        MEMSET32 = 32
+    };
+
+public:
+    MemsetBench(void* param, MemsetType type, size_t minSize, size_t maxSize) : INHERITED(param) {
+        SkASSERT((minSize < maxSize) && (maxSize <= kBufferSize));
+        fMinSize = minSize;
+        fMaxSize = maxSize;
+        fName.printf("memset%d_" SK_SIZE_T_SPECIFIER "_" SK_SIZE_T_SPECIFIER,
+                     type, minSize, maxSize);
+        fIsRendering = false;
+    }
+
+    virtual void performTest() = 0;
+
+protected:
+    virtual const char* onGetName() SK_OVERRIDE {
+        return fName.c_str();
+    }
+
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+        for (int i = 0; i < kLoop; ++i) {
+            this->performTest();
+        }
+    }
+
+private:
+    typedef SkBenchmark INHERITED;
+};
+
+class Memset32Bench : public MemsetBench {
+    uint32_t kBuffer[kBufferSize + 3];
+public:
+    Memset32Bench(void* param, size_t minSize, size_t maxSize)
+        : INHERITED(param, MEMSET32, minSize, maxSize) {}
+
+protected:
+    virtual inline void performTest() SK_OVERRIDE {
+        for(size_t j = fMinSize; j < fMaxSize; ++j){
+            sk_memset32(kBuffer, VALUE32, j);
+            sk_memset32(kBuffer + 1, VALUE32, j);
+            sk_memset32(kBuffer + 2, VALUE32, j);
+            sk_memset32(kBuffer + 3, VALUE32, j);
+        }
+    }
+private:
+    typedef MemsetBench INHERITED;
+};
+
+class Memset16Bench : public MemsetBench {
+    uint16_t kBuffer[kBufferSize + 7];
+public:
+    Memset16Bench(void* param, size_t minSize, size_t maxSize)
+        : INHERITED(param, MEMSET16, minSize, maxSize) {}
+
+protected:
+    virtual inline void performTest() SK_OVERRIDE {
+        for(size_t j = fMinSize; j < fMaxSize; ++j){
+            sk_memset16(kBuffer, VALUE16, j);
+            sk_memset16(kBuffer + 1, VALUE16, j);
+            sk_memset16(kBuffer + 2, VALUE16, j);
+            sk_memset16(kBuffer + 3, VALUE16, j);
+            sk_memset16(kBuffer + 4, VALUE16, j);
+            sk_memset16(kBuffer + 5, VALUE16, j);
+            sk_memset16(kBuffer + 6, VALUE16, j);
+            sk_memset16(kBuffer + 7, VALUE16, j);
+        }
+    }
+private:
+    typedef MemsetBench INHERITED;
+};
+
+DEF_BENCH(return new Memset32Bench(p, 1, 600);)
+DEF_BENCH(return new Memset32Bench(p, 600, 800);)
+DEF_BENCH(return new Memset32Bench(p, 800, 1000);)
+DEF_BENCH(return new Memset32Bench(p, 1000, 2000);)
+DEF_BENCH(return new Memset32Bench(p, 2000, 3000);)
+DEF_BENCH(return new Memset32Bench(p, 3000, 4000);)
+DEF_BENCH(return new Memset32Bench(p, 4000, 5000);)
+
+DEF_BENCH(return new Memset16Bench(p, 1, 600);)
+DEF_BENCH(return new Memset16Bench(p, 600, 800);)
+DEF_BENCH(return new Memset16Bench(p, 800, 1000);)
+DEF_BENCH(return new Memset16Bench(p, 1000, 2000);)
+DEF_BENCH(return new Memset16Bench(p, 2000, 3000);)
+DEF_BENCH(return new Memset16Bench(p, 3000, 4000);)
+DEF_BENCH(return new Memset16Bench(p, 4000, 5000);)