From fc8581b2d8c63439162c701623bce096088ce6e6 Mon Sep 17 00:00:00 2001
From: "reed@google.com" <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81>
Date: Mon, 9 Jul 2012 17:40:48 +0000
Subject: revert 4478

git-svn-id: http://skia.googlecode.com/svn/trunk@4479 2bbb7eff-a529-9590-31e7-b0007b416f81
---
 bench/ChecksumBench.cpp | 86 ++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 71 insertions(+), 15 deletions(-)

(limited to 'bench/ChecksumBench.cpp')

diff --git a/bench/ChecksumBench.cpp b/bench/ChecksumBench.cpp
index fe3fd47789..903e584c55 100644
--- a/bench/ChecksumBench.cpp
+++ b/bench/ChecksumBench.cpp
@@ -7,41 +7,97 @@
 #include "SkBenchmark.h"
 #include "SkCanvas.h"
 #include "SkChecksum.h"
-#include "SkRandom.h"
+#include "SkString.h"
 
 class ComputeChecksumBench : public SkBenchmark {
+public:
+    ComputeChecksumBench(void* param, const char name[]) : INHERITED(param) {
+        fName.printf("compute_checksum_%s", name);
+    }
+
     enum {
-        U32COUNT  = 256,
-        SIZE      = U32COUNT * 4,
+        DATA_SIZE = 1024,
         N         = SkBENCHLOOP(100000),
     };
-    uint32_t    fData[U32COUNT];
+protected:
+    virtual const char* onGetName() {
+        return fName.c_str();
+    }
+
+    virtual void onDraw(SkCanvas* canvas) {
+        uint64_t data[DATA_SIZE / sizeof(uint64_t)];
+        computeChecksum(data, DATA_SIZE);
+    }
+
+    virtual void computeChecksum(const uint64_t*, size_t) = 0;
 
+    SkString fName;
+private:
+    typedef SkBenchmark INHERITED;
+};
+
+/*
+ *  Use SkComputeChecksum32 to compute a checksum on a datablock
+ */
+class ComputeChecksum32Bench : public ComputeChecksumBench {
 public:
-    ComputeChecksumBench(void* param) : INHERITED(param) {
-        SkRandom rand;
-        for (int i = 0; i < U32COUNT; ++i) {
-            fData[i] = rand.nextU();
+    ComputeChecksum32Bench(void* param)
+        : INHERITED(param, "32") { }
+
+protected:
+    virtual void computeChecksum(const uint64_t* data, size_t len) {
+        for (int i = 0; i < N; i++) {
+            volatile uint32_t result = SkComputeChecksum32(reinterpret_cast<const uint32_t*>(data), len);
         }
     }
 
+private:
+    typedef ComputeChecksumBench INHERITED;
+};
+
+/*
+ *  Use SkComputeChecksum64 to compute a checksum on a datablock
+ */
+class ComputeChecksum64Bench : public ComputeChecksumBench {
+public:
+    ComputeChecksum64Bench(void* param)
+    : INHERITED(param, "64") { }
+    
 protected:
-    virtual const char* onGetName() {
-        return "compute_checksum";
+    virtual void computeChecksum(const uint64_t* data, size_t len) {
+        for (int i = 0; i < N; i++) {
+            volatile uint64_t result = SkComputeChecksum64(data, len);
+        }
     }
+    
+private:
+    typedef ComputeChecksumBench INHERITED;
+};
 
-    virtual void onDraw(SkCanvas* canvas) {
+/*
+ *  Use SkComputeChecksum64 to compute a checksum on a datablock
+ */
+class ComputeChecksumXXBench : public ComputeChecksumBench {
+public:
+    ComputeChecksumXXBench(void* param) : INHERITED(param, "XX") { }
+    
+protected:
+    virtual void computeChecksum(const uint64_t* data, size_t len) {
         for (int i = 0; i < N; i++) {
-            volatile uint32_t result = SkChecksum::Compute(fData, sizeof(fData));
+            volatile uint32_t result = SkChecksum::Compute(reinterpret_cast<const uint32_t*>(data), len);
         }
     }
-
+    
 private:
-    typedef SkBenchmark INHERITED;
+    typedef ComputeChecksumBench INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
-static SkBenchmark* Fact0(void* p) { return new ComputeChecksumBench(p); }
+static SkBenchmark* Fact0(void* p) { return new ComputeChecksum32Bench(p); }
+static SkBenchmark* Fact1(void* p) { return new ComputeChecksum64Bench(p); }
+static SkBenchmark* Fact2(void* p) { return new ComputeChecksumXXBench(p); }
 
 static BenchRegistry gReg0(Fact0);
+static BenchRegistry gReg1(Fact1);
+static BenchRegistry gReg2(Fact2);
-- 
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