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package org.openjdk.bench.java.lang.foreign;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;

import java.lang.foreign.MemorySegment;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.concurrent.TimeUnit;

@BenchmarkMode(Mode.AverageTime)
@Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Benchmark)
public class SegmentOfBuffer {

    private final ByteBuffer buffer = ByteBuffer
            .allocateDirect(0x1000)
            .order(ByteOrder.nativeOrder());

    @Benchmark
    @Fork(value = 3)
    public long ofBuffer() {
        return MemorySegment.ofBuffer(buffer).address();
    }

    @Benchmark
    @Fork(value = 3, jvmArgs = "-XX:CompileCommand=inline,jdk.internal.foreign.AbstractMemorySegmentImpl::ofBuffer,false")
    public long ofBufferInlineFalse() {
        return MemorySegment.ofBuffer(buffer).address();
    }

    @Benchmark
    @Fork(value = 3, jvmArgs = "-XX:CompileCommand=inline,jdk.internal.foreign.AbstractMemorySegmentImpl::ofBuffer,true")
    public long ofBufferInlineTrue() {
        return MemorySegment.ofBuffer(buffer).address();
    }

}