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test/micro/org/openjdk/bench/java/lang/foreign/LoopOverPollutedBuffer.java

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 41 import java.util.concurrent.TimeUnit;
 42 
 43 import static java.lang.foreign.ValueLayout.JAVA_INT;
 44 
 45 @BenchmarkMode(Mode.AverageTime)
 46 @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
 47 @Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
 48 @State(org.openjdk.jmh.annotations.Scope.Thread)
 49 @OutputTimeUnit(TimeUnit.MILLISECONDS)
 50 @Fork(value = 3, jvmArgs = { "--add-opens=java.base/jdk.internal.misc=ALL-UNNAMED" })
 51 public class LoopOverPollutedBuffer {
 52 
 53     static final int ELEM_SIZE = 1_000_000;
 54     static final int CARRIER_SIZE = (int) JAVA_INT.byteSize();
 55     static final int ALLOC_SIZE = ELEM_SIZE * CARRIER_SIZE;
 56 
 57     static final Unsafe unsafe = Utils.unsafe;
 58 
 59     ByteBuffer dbb = ByteBuffer.allocateDirect(ALLOC_SIZE).order(ByteOrder.nativeOrder());
 60     byte[] arr = new byte[ALLOC_SIZE];

 61     ByteBuffer hbb = ByteBuffer.wrap(arr).order(ByteOrder.nativeOrder());
 62     FloatBuffer hfb = hbb.asFloatBuffer();
 63 
 64 
 65     @Setup
 66     public void setup() {
 67         for (int i = 0; i < ELEM_SIZE; i++) {
 68             dbb.putFloat(i * 4, i);
 69             hbb.putFloat(i * 4, i);
 70         }
 71         for (int i = 0; i < ELEM_SIZE; i++) {
 72             hfb.put(i, i);
 73         }
 74     }
 75 
 76     @TearDown
 77     public void tearDown() {
 78         unsafe.invokeCleaner(dbb);
 79         arr = null;
 80         hbb = null;

 41 import java.util.concurrent.TimeUnit;
 42 
 43 import static java.lang.foreign.ValueLayout.JAVA_INT;
 44 
 45 @BenchmarkMode(Mode.AverageTime)
 46 @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
 47 @Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
 48 @State(org.openjdk.jmh.annotations.Scope.Thread)
 49 @OutputTimeUnit(TimeUnit.MILLISECONDS)
 50 @Fork(value = 3, jvmArgs = { "--add-opens=java.base/jdk.internal.misc=ALL-UNNAMED" })
 51 public class LoopOverPollutedBuffer {
 52 
 53     static final int ELEM_SIZE = 1_000_000;
 54     static final int CARRIER_SIZE = (int) JAVA_INT.byteSize();
 55     static final int ALLOC_SIZE = ELEM_SIZE * CARRIER_SIZE;
 56 
 57     static final Unsafe unsafe = Utils.unsafe;
 58 
 59     ByteBuffer dbb = ByteBuffer.allocateDirect(ALLOC_SIZE).order(ByteOrder.nativeOrder());
 60     byte[] arr = new byte[ALLOC_SIZE];
 61     @SuppressWarnings("initialization")
 62     ByteBuffer hbb = ByteBuffer.wrap(arr).order(ByteOrder.nativeOrder());
 63     FloatBuffer hfb = hbb.asFloatBuffer();
 64 
 65 
 66     @Setup
 67     public void setup() {
 68         for (int i = 0; i < ELEM_SIZE; i++) {
 69             dbb.putFloat(i * 4, i);
 70             hbb.putFloat(i * 4, i);
 71         }
 72         for (int i = 0; i < ELEM_SIZE; i++) {
 73             hfb.put(i, i);
 74         }
 75     }
 76 
 77     @TearDown
 78     public void tearDown() {
 79         unsafe.invokeCleaner(dbb);
 80         arr = null;
 81         hbb = null;
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