jdk-24/test/hotspot/jtreg/runtime/cds/MaxMetaspaceSize.java

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/**
 * @test
 * @requires vm.cds
 * @requires vm.flagless
 * @bug 8067187 8200078
 * @summary Testing CDS dumping with the -XX:MaxMetaspaceSize=<size> option
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run driver MaxMetaspaceSize
 */

import java.util.ArrayList;

import jdk.test.lib.cds.CDSTestUtils;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.Platform;

public class MaxMetaspaceSize {
  public static void main(String[] args) throws Exception {
    ArrayList<String> processArgs = new ArrayList<>();
    processArgs.add("-Xshare:dump");

    if (Platform.is64bit()) {
      processArgs.add("-XX:MaxMetaspaceSize=3m");
      processArgs.add("-XX:CompressedClassSpaceSize=1m");
    } else {
      processArgs.add("-XX:MaxMetaspaceSize=1m");
    }

    String msg = "OutOfMemoryError: ((Metaspace)|(Compressed class space))";
    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(processArgs);
    CDSTestUtils.executeAndLog(pb, "dump").shouldMatch(msg).shouldHaveExitValue(1);
  }
}