test/hotspot/jtreg/compiler/arguments/TestCompileThresholdScaling.java

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/**
 * @test TestCompileThresholdScaling
 * @bug 8283807
 * @summary With a very large value of CompileThresholdScaling all scaled
 *          thresholds should be outside the allowed range
 * @library /test/lib
 * @run driver compiler.arguments.TestCompileThresholdScaling
 */

package compiler.arguments;

import jdk.test.lib.Asserts;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import java.util.List;

public class TestCompileThresholdScaling {

    public static void main(String args[]) throws Throwable {
        checkCompileThresholdScaling(Double.MAX_VALUE, true);
        checkCompileThresholdScaling(Double.valueOf(Integer.MAX_VALUE), true);
        checkCompileThresholdScaling(1.0, false);
    }

    static void checkCompileThresholdScaling(double value, boolean fail) throws Throwable {
        OutputAnalyzer out = ProcessTools.executeTestJava("-XX:CompileThresholdScaling=" + value, "--version");
        out.shouldHaveExitValue(0);
        String output = out.getOutput();

        List<String> thresholdList = List.of(
        "Tier0InvokeNotifyFreqLog", "Tier0BackedgeNotifyFreqLog", "Tier3InvocationThreshold",
        "Tier3MinInvocationThreshold", "Tier3CompileThreshold", "Tier3BackEdgeThreshold",
        "Tier2InvokeNotifyFreqLog", "Tier2BackedgeNotifyFreqLog", "Tier3InvokeNotifyFreqLog",
        "Tier3BackedgeNotifyFreqLog", "Tier23InlineeNotifyFreqLog", "Tier4InvocationThreshold",
        "Tier4MinInvocationThreshold", "Tier4CompileThreshold", "Tier4BackEdgeThreshold");

        String pattern = ".*CompileThreshold .* must be between .* and .*";
        boolean found = Pattern.compile(pattern).matcher(output).find();
        Asserts.assertEquals(found, fail, "Unexpected result");

        for (String threshold : thresholdList) {
            pattern = ".*" + threshold + "=.* is outside the allowed range";
            Asserts.assertEquals(found, fail, "Unexpected result");
        }
    }

}