gistfile1.java

@State(Scope.Benchmark)
@Warmup(iterations = 10)
@Measurement(iterations = 25)
public class AbstractByteBufBenchmark extends AbstractMicrobenchmark {
    private ByteBuf asciiBuffer;
    private ByteBuf utf8Buffer;

    @Setup
    public void setup() {
        asciiBuffer = Unpooled.directBuffer(512);
        StringBuilder asciiSequence = new StringBuilder(128);
        for (int i = 0; i < 128; i++) {
            asciiSequence.append('a');
        }
        asciiBuffer.writeBytes(asciiSequence.toString().getBytes(CharsetUtil.US_ASCII));

        // Generate some mixed UTF-8 String for benchmark
        utf8Buffer = Unpooled.directBuffer(512);
        StringBuilder utf8Sequence = new StringBuilder(128);
        char[] chars = "Some UTF-8 like äÄ∏ŒŒ".toCharArray();
        for (int i = 0; i < 128; i++) {
            utf8Sequence.append(chars[i % chars.length]);
        }
        utf8Buffer.writeBytes(utf8Sequence.toString().getBytes(CharsetUtil.UTF_8));
    }

    @TearDown
    public void teardown() {
        asciiBuffer.release();
        utf8Buffer.release();
    }

    @Benchmark
    public String toStringUS_ASCII() {
        return asciiBuffer.toString(CharsetUtil.US_ASCII);
    }

    @Benchmark
    public String toStringUTF_8() {
        return utf8Buffer.toString(CharsetUtil.UTF_8);
    }

    @Benchmark
    public String toStringUTF_8_US_ASCII_DATA() {
        return asciiBuffer.toString(CharsetUtil.UTF_8);
    }

    @Benchmark
    public String toStringOldUS_ASCII() {
        return ByteBufUtil0.toString(asciiBuffer, CharsetUtil.US_ASCII);
    }

    @Benchmark
    public String toStringOldUTF_8() {
        return ByteBufUtil0.toString(utf8Buffer, CharsetUtil.UTF_8);
    }

    @Benchmark
    public String toStringOldUTF_8_US_ASCII_DATA() {
        return ByteBufUtil0.toString(asciiBuffer, CharsetUtil.UTF_8);
    }
}