1 files changed, 97 insertions, 0 deletions
diff --git a/chromium/third_party/skia/bench/ChecksumBench.cpp b/chromium/third_party/skia/bench/ChecksumBench.cpp
new file mode 100644
index 00000000000..7d3ec9ff9f4
--- /dev/null
+++ b/chromium/third_party/skia/bench/ChecksumBench.cpp
@@ -0,0 +1,97 @@
+/*
+ * 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 "Benchmark.h"
+#include "SkCanvas.h"
+#include "SkChecksum.h"
+#include "SkMD5.h"
+#include "SkRandom.h"
+#include "SkSHA1.h"
+#include "SkTemplates.h"
+
+enum ChecksumType {
+    kChecksum_ChecksumType,
+    kMD5_ChecksumType,
+    kSHA1_ChecksumType,
+    kMurmur3_ChecksumType,
+};
+
+class ComputeChecksumBench : public Benchmark {
+    enum {
+        U32COUNT  = 256,
+        SIZE      = U32COUNT * 4,
+    };
+    uint32_t    fData[U32COUNT];
+    ChecksumType fType;
+
+public:
+    ComputeChecksumBench(ChecksumType type) : fType(type) {
+        SkRandom rand;
+        for (int i = 0; i < U32COUNT; ++i) {
+            fData[i] = rand.nextU();
+        }
+    }
+
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
+    }
+
+protected:
+    virtual const char* onGetName() {
+        switch (fType) {
+            case kChecksum_ChecksumType: return "compute_checksum";
+            case kMD5_ChecksumType: return "compute_md5";
+            case kSHA1_ChecksumType: return "compute_sha1";
+            case kMurmur3_ChecksumType: return "compute_murmur3";
+
+            default: SK_CRASH(); return "";
+        }
+    }
+
+    virtual void onDraw(const int loops, SkCanvas*) {
+        switch (fType) {
+            case kChecksum_ChecksumType: {
+                for (int i = 0; i < loops; i++) {
+                    volatile uint32_t result = SkChecksum::Compute(fData, sizeof(fData));
+                    sk_ignore_unused_variable(result);
+                }
+            } break;
+            case kMD5_ChecksumType: {
+                for (int i = 0; i < loops; i++) {
+                    SkMD5 md5;
+                    md5.update(reinterpret_cast<uint8_t*>(fData), sizeof(fData));
+                    SkMD5::Digest digest;
+                    md5.finish(digest);
+                }
+            } break;
+            case kSHA1_ChecksumType: {
+                for (int i = 0; i < loops; i++) {
+                    SkSHA1 sha1;
+                    sha1.update(reinterpret_cast<uint8_t*>(fData), sizeof(fData));
+                    SkSHA1::Digest digest;
+                    sha1.finish(digest);
+                }
+            } break;
+            case kMurmur3_ChecksumType: {
+                for (int i = 0; i < loops; i++) {
+                    volatile uint32_t result = SkChecksum::Murmur3(fData, sizeof(fData));
+                    sk_ignore_unused_variable(result);
+                }
+            }break;
+        }
+
+    }
+
+private:
+    typedef Benchmark INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+DEF_BENCH( return new ComputeChecksumBench(kChecksum_ChecksumType); )
+DEF_BENCH( return new ComputeChecksumBench(kMD5_ChecksumType); )
+DEF_BENCH( return new ComputeChecksumBench(kSHA1_ChecksumType); )
+DEF_BENCH( return new ComputeChecksumBench(kMurmur3_ChecksumType); )