1 files changed, 133 insertions, 0 deletions
diff --git a/benchmarks/src/benchmarks/regression/FormatterBenchmark.java b/benchmarks/src/benchmarks/regression/FormatterBenchmark.java
new file mode 100644
index 0000000..0d4cf26
--- /dev/null
+++ b/benchmarks/src/benchmarks/regression/FormatterBenchmark.java
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2009 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package benchmarks.regression;
+
+import com.google.caliper.Runner;
+import com.google.caliper.SimpleBenchmark;
+import java.util.Formatter;
+import java.util.Locale;
+
+/**
+ * Compares Formatter against hand-written StringBuilder code.
+ */
+public class FormatterBenchmark extends SimpleBenchmark {
+    public void timeFormatter_NoFormatting(int reps) {
+        for (int i = 0; i < reps; i++) {
+            Formatter f = new Formatter();
+            f.format("this is a reasonably short string that doesn't actually need any formatting");
+        }
+    }
+
+    public void timeStringBuilder_NoFormatting(int reps) {
+        for (int i = 0; i < reps; i++) {
+            StringBuilder sb = new StringBuilder();
+            sb.append("this is a reasonably short string that doesn't actually need any formatting");
+        }
+    }
+
+    public void timeFormatter_OneInt(int reps) {
+        Integer value = Integer.valueOf(1024); // We're not trying to benchmark boxing here.
+        for (int i = 0; i < reps; i++) {
+            Formatter f = new Formatter();
+            f.format("this is a reasonably short string that has an int %d in it", value);
+        }
+    }
+
+    public void timeFormatter_OneIntArabic(int reps) {
+        Locale arabic = new Locale("ar");
+        Integer value = Integer.valueOf(1024); // We're not trying to benchmark boxing here.
+        for (int i = 0; i < reps; i++) {
+            Formatter f = new Formatter();
+            f.format(arabic, "this is a reasonably short string that has an int %d in it", value);
+        }
+    }
+
+    public void timeStringBuilder_OneInt(int reps) {
+        for (int i = 0; i < reps; i++) {
+            StringBuilder sb = new StringBuilder();
+            sb.append("this is a reasonably short string that has an int ");
+            sb.append(1024);
+            sb.append(" in it");
+        }
+    }
+
+    public void timeFormatter_OneHexInt(int reps) {
+        Integer value = Integer.valueOf(1024); // We're not trying to benchmark boxing here.
+        for (int i = 0; i < reps; i++) {
+            Formatter f = new Formatter();
+            f.format("this is a reasonably short string that has an int %x in it", value);
+        }
+    }
+
+    public void timeStringBuilder_OneHexInt(int reps) {
+        for (int i = 0; i < reps; i++) {
+            StringBuilder sb = new StringBuilder();
+            sb.append("this is a reasonably short string that has an int ");
+            sb.append(Integer.toHexString(1024));
+            sb.append(" in it");
+        }
+    }
+
+    public void timeFormatter_OneFloat(int reps) {
+        Float value = Float.valueOf(10.24f); // We're not trying to benchmark boxing here.
+        for (int i = 0; i < reps; i++) {
+            Formatter f = new Formatter();
+            f.format("this is a reasonably short string that has a float %f in it", value);
+        }
+    }
+
+    public void timeFormatter_OneFloat_dot2f(int reps) {
+        Float value = Float.valueOf(10.24f); // We're not trying to benchmark boxing here.
+        for (int i = 0; i < reps; i++) {
+            Formatter f = new Formatter();
+            f.format("this is a reasonably short string that has a float %.2f in it", value);
+        }
+    }
+
+    public void timeFormatter_TwoFloats(int reps) {
+        Float value = Float.valueOf(10.24f); // We're not trying to benchmark boxing here.
+        for (int i = 0; i < reps; i++) {
+            Formatter f = new Formatter();
+            f.format("this is a reasonably short string that has two floats %f and %f in it", value, value);
+        }
+    }
+
+    public void timeStringBuilder_OneFloat(int reps) {
+        for (int i = 0; i < reps; i++) {
+            StringBuilder sb = new StringBuilder();
+            sb.append("this is a reasonably short string that has a float ");
+            sb.append(10.24f);
+            sb.append(" in it");
+        }
+    }
+
+    public void timeFormatter_OneString(int reps) {
+        for (int i = 0; i < reps; i++) {
+            Formatter f = new Formatter();
+            f.format("this is a reasonably short string that has a string %s in it", "hello");
+        }
+    }
+
+    public void timeStringBuilder_OneString(int reps) {
+        for (int i = 0; i < reps; i++) {
+            StringBuilder sb = new StringBuilder();
+            sb.append("this is a reasonably short string that has a string ");
+            sb.append("hello");
+            sb.append(" in it");
+        }
+    }
+}