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 * version 2 for more details (a copy is included in the LICENSE file that

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/* @test TestAllocateHeapAtMultiple.java

 * @key gc

 * @summary Test to check allocation of Java Heap with AllocateHeapAt option. Has multiple sub-tests to cover different code paths.

 * @library /test/lib

 * @modules java.base/jdk.internal.misc

 */

import jdk.test.lib.JDKToolFinder;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

import java.util.ArrayList;

import java.util.Collections;

public class TestAllocateHeapAtMultiple {

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

    ArrayList<String> vmOpts = new ArrayList();

    String[] testVmOpts = null;

    String test_dir = System.getProperty("test.dir", ".");

    String testVmOptsStr = System.getProperty("test.java.opts");

    if (!testVmOptsStr.isEmpty()) {

      testVmOpts = testVmOptsStr.split(" ");

    }

    // Extra options for each of the sub-tests

    String[] extraOptsList = new String[] {

      "-Xmx32m -Xms32m -XX:+UseCompressedOops",     // 1. With compressedoops enabled.

      "-Xmx32m -Xms32m -XX:-UseCompressedOops",     // 2. With compressedoops disabled.

      "-Xmx32m -Xms32m -XX:HeapBaseMinAddress=3g",  // 3. With user specified HeapBaseMinAddress.

      "-Xmx4g -Xms4g",                              // 4. With larger heap size (UnscaledNarrowOop not possible).

      "-Xmx4g -Xms4g -XX:+UseLargePages",           // 5. Set UseLargePages.

      "-Xmx4g -Xms4g -XX:+UseNUMA"                  // 6. Set UseNUMA.

    };

    for(String extraOpts : extraOptsList) {

      vmOpts.clear();

      if(testVmOpts != null) {

        Collections.addAll(vmOpts, testVmOpts);

      }

      // Add extra options specific to the sub-test.

      String[] extraOptsArray = extraOpts.split(" ");

      if(extraOptsArray != null) {

        Collections.addAll(vmOpts, extraOptsArray);

      }

      // Add common options

      Collections.addAll(vmOpts, new String[] {"-XX:AllocateHeapAt=" + test_dir,

                                               "-Xlog:gc+heap=info",

                                               "-version"});

      System.out.print("Testing:\n" + JDKToolFinder.getJDKTool("java"));

      for (int i = 0; i < vmOpts.size(); i += 1) {

        System.out.print(" " + vmOpts.get(i));

      }

      System.out.println();

      ProcessBuilder pb =

        ProcessTools.createJavaProcessBuilder(vmOpts.toArray(new String[vmOpts.size()]));

      OutputAnalyzer output = new OutputAnalyzer(pb.start());

      System.out.println("Output:\n" + output.getOutput());

      output.shouldContain("Successfully allocated Java heap at location");

      output.shouldHaveExitValue(0);

    }

  }

}