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* version 2 for more details (a copy is included in the LICENSE file that
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test TestDisableExplicitGCFlag
 * @key gc
 * @bug 8026047
 * @summary Verify that DisableExplicitGC flag affect System.gc() calls treatment
 * @library /testlibrary
 * @build TestDisableExplicitGCFlag
 * @run main/othervm TestDisableExplicitGCFlag
 */

import com.oracle.java.testlibrary.*;

public class TestDisableExplicitGCFlag {

    public static void main(String args[]) throws Exception {
        String options = System.getProperty("test.java.opts");
        if (options == null) {
            options = "";
        }

        options = options.replaceAll("-Xloggc:[^ ]*", "");

        testDisableExplicitGC(true, options);
        testDisableExplicitGC(false, options);
    }

    public static void testDisableExplicitGC(boolean disableGC, String options) throws Exception {
        options += (disableGC ? " -XX:+DisableExplicitGC" : " -XX:-DisableExplicitGC") +
                   " -XX:+PrintGC " + GCProvoker.class.getName();

        options = options.replaceAll("[\\s]+", " ").trim();

        ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder(options.split(" "));
        OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start());

        analyzer.shouldHaveExitValue(0);

        if (disableGC) {
            analyzer.shouldNotContain("System.gc");
        } else {
            analyzer.shouldContain("System.gc");
        }
    }

    public static class GCProvoker {

        public static void main(String args[]) {
            for (int i = 0; i < 100; i++) {
                System.gc();
            }
        }

    }

}