test/runtime/NMT/JcmdScale.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @key nmt jcmd
 * @summary Test the NMT scale parameter
 * @library /testlibrary
 * @run main/othervm -XX:NativeMemoryTracking=summary JcmdScale
 */

import com.oracle.java.testlibrary.*;

public class JcmdScale {

  public static void main(String args[]) throws Exception {
    ProcessBuilder pb = new ProcessBuilder();
    OutputAnalyzer output;
    // Grab my own PID
    String pid = Integer.toString(ProcessTools.getProcessId());

    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "scale=KB"});
    output = new OutputAnalyzer(pb.start());
    output.shouldContain("KB, committed=");

    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "scale=MB"});
    output = new OutputAnalyzer(pb.start());
    output.shouldContain("MB, committed=");

    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "scale=GB"});
    output = new OutputAnalyzer(pb.start());
    output.shouldContain("GB, committed=");

    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "scale=apa"});
    output = new OutputAnalyzer(pb.start());
    output.shouldContain("Incorrect scale value: apa");

    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=GB"});
    output = new OutputAnalyzer(pb.start());
    output.shouldContain("GB, committed=");

    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=apa"});
    output = new OutputAnalyzer(pb.start());
    output.shouldContain("Incorrect scale value: apa");

  }
}