AuroraMiddleware/protobuf
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Added copyright notice, made constants constant, added GC call before each test.

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jonathan.skeet 2009-03-05 11:10:35 +00:00
parent ff9c9e4d93
commit 8604c745fc
1 changed files with 34 additions and 2 deletions
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36
benchmarks/ProtoBench.java
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@ -1,3 +1,33 @@
// Protocol Buffers - Google's data interchange format
// Copyright 2009 Google Inc. All rights reserved.
// http://code.google.com/p/protobuf/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package com.google.protocolbuffers; package com.google.protocolbuffers;
import java.io.ByteArrayInputStream; import java.io.ByteArrayInputStream;
@ -13,8 +43,8 @@ import com.google.protobuf.Message;
public class ProtoBench { public class ProtoBench {
private static long MIN_SAMPLE_TIME_MS = 2 * 1000; private static final long MIN_SAMPLE_TIME_MS = 2 * 1000;
private static long TARGET_TIME_MS = 30 * 1000; private static final long TARGET_TIME_MS = 30 * 1000;
private ProtoBench() { private ProtoBench() {
// Prevent instantiation // Prevent instantiation
@ -110,6 +140,7 @@ public class ProtoBench {
iterations *= 2; iterations *= 2;
elapsed = timeAction(action, iterations); elapsed = timeAction(action, iterations);
} }
// Upscale the sample to the target time. Do this in floating point arithmetic // Upscale the sample to the target time. Do this in floating point arithmetic
// to avoid overflow issues. // to avoid overflow issues.
iterations = (int) ((TARGET_TIME_MS / (double) elapsed) * iterations); iterations = (int) ((TARGET_TIME_MS / (double) elapsed) * iterations);
@ -121,6 +152,7 @@ public class ProtoBench {
} }
private static long timeAction(Action action, int iterations) throws IOException { private static long timeAction(Action action, int iterations) throws IOException {
System.gc();
long start = System.currentTimeMillis(); long start = System.currentTimeMillis();
for (int i = 0; i < iterations; i++) { for (int i = 0; i < iterations; i++) {
action.execute(); action.execute();