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package compiler.intrinsics;

import compiler.lib.ir_framework.*;

import jdk.jfr.Event;
import jdk.jfr.Recording;

/**
 * @test
 * @summary Tests that the getEventWriter call to write_checkpoint correctly
 *          reports returning an oop
 * @bug 8347463
 * @requires vm.hasJFR
 * @library /test/lib /
 * @run driver compiler.intrinsics.TestReturnOopSetForJFRWriteCheckpoint
 */
public class TestReturnOopSetForJFRWriteCheckpoint {

    private static class TestEvent extends Event {
    }

    public static void main(String... args) {
        TestFramework.run();
    }

    // Crash was due to the return_oop field not being set
    // for the write_checkpoint call. Instead of explicitly checking for
    // it, we look for an non-void return type (which comes hand-in-hand
    // with the return_oop information).
    @Test
    @IR(failOn = { IRNode.STATIC_CALL_OF_METHOD, "write_checkpoint.*void"})
    public void testWriteCheckpointReturnType() {
        try (Recording r = new Recording()) {
            r.start();
            emitEvent();
        }
    }

    @ForceInline
    public void emitEvent() {
        TestEvent t = new TestEvent();
        t.commit();
    }
}