add bench for fontcache performance (measurement)
BUG=
Review URL: https://codereview.chromium.org/16374009
git-svn-id: http://skia.googlecode.com/svn/trunk@9508 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/FontCacheBench.cpp b/bench/FontCacheBench.cpp
new file mode 100644
index 0000000..4224e87
--- /dev/null
+++ b/bench/FontCacheBench.cpp
@@ -0,0 +1,52 @@
+/*
+ * 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 "SkFontHost.h"
+#include "SkPaint.h"
+#include "SkString.h"
+#include "SkTemplates.h"
+
+#include "glyphs.h"
+
+class FontCacheBench : public SkBenchmark {
+ enum { N = SkBENCHLOOP(800) };
+public:
+ FontCacheBench(void* param) : INHERITED(param) {
+ }
+
+protected:
+ virtual const char* onGetName() SK_OVERRIDE {
+ return "fontcache";
+ }
+
+ virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+ SkPaint paint;
+ this->setupPaint(&paint);
+ paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
+
+ for (int i = 0; i < N; ++i) {
+ const int16_t* array = gUniqueGlyphIDs;
+ while (*array >= 0) {
+ const int16_t* end = array + 1;
+ while (*end >= 0) {
+ end += 1;
+ }
+ paint.measureText(array, end - array);
+ array = end + 1; // skip the sentinel
+ }
+ }
+ }
+
+private:
+ typedef SkBenchmark INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+DEF_BENCH( return new FontCacheBench(p); )