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package jdk.jfr.api.consumer;

import jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedEvent;

import jdk.jfr.consumer.RecordedThread;

import jdk.test.lib.Asserts;

import jdk.test.lib.jfr.Events;

import jdk.test.lib.jfr.SimpleEvent;

/**

 * @test

 * @summary Tests that chunks are read in order and constant pools from multiple chunks can be read

 * @key jfr

 * @requires vm.hasJFR

 * @library /test/lib

 * @run main/othervm jdk.jfr.api.consumer.TestRecordingInternals

 */

public class TestRecordingInternals {

    public static void main(String[] args) throws Throwable {

        try (Recording continuous = new Recording()) {

            continuous.start();

            for (int i = 0; i < 3; i++) {

                // Each new recording will create a new chunk

                // with a new set of constant pools, i.e.

                // constant pools for threads and thread groups

                createProfilingRecording(i);

            }

            continuous.stop();

            int i = 0;

            for (RecordedEvent e : Events.fromRecording(continuous)) {

                Integer id = e.getValue("id");

                RecordedThread rt = e.getThread();

                Asserts.assertEquals(id.toString(), rt.getJavaName(), "Thread name should match id");

                Asserts.assertEquals(id.toString(), rt.getThreadGroup().getName(), "Thread group name should match id");

                Asserts.assertEquals(id, Integer.valueOf(i), "Chunks out of order");

                i++;

            }

        }

    }

    private static void createProfilingRecording(int id) throws InterruptedException {

        try (Recording r = new Recording()) {

            r.start();

            ThreadGroup tg = new ThreadGroup(String.valueOf(id));

            Thread t = new Thread(tg, () -> {

                SimpleEvent event = new SimpleEvent();

                event.id = id;

                event.commit();

            }, String.valueOf(id));

            t.start();

            t.join();

            r.stop();

        }

    }

}