8014765: VM exits if MaxTenuringThreshold is set below the default InitialTenuringThreshold, and InitialTenuringThreshold is not set
Summary: The VM exits when the condition in the subject line applies. The fix sets InitialTenuringThreshold to MaxTenuringThreshold if it is larger than MaxTenuringThreshold and InitialTenuringThreshold has not been set (is default).
Reviewed-by: jwilhelm, jmasa, brutisso, johnc
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/*
* @test TestInitialTenuringThreshold
* @key gc
* @bug 8014765
* @summary Tests argument processing for initial tenuring threshold
* @library /testlibrary
* @run main/othervm TestInitialTenuringThreshold
* @author thomas.schatzl@oracle.com
*/
import com.oracle.java.testlibrary.*;
public class TestInitialTenuringThreshold {
public static void runWithThresholds(int initial, int max, boolean shouldfail) throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:InitialTenuringThreshold=" + String.valueOf(initial),
"-XX:MaxTenuringThreshold=" + String.valueOf(max),
"-version"
);
OutputAnalyzer output = new OutputAnalyzer(pb.start());
if (shouldfail) {
output.shouldHaveExitValue(1);
} else {
output.shouldHaveExitValue(0);
}
}
public static void main(String args[]) throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
// some value below the default value of InitialTenuringThreshold of 7
"-XX:MaxTenuringThreshold=1",
"-version"
);
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldHaveExitValue(0);
// successful tests
runWithThresholds(0, 10, false);
runWithThresholds(5, 5, false);
// failing tests
runWithThresholds(10, 0, true);
runWithThresholds(9, 8, true);
runWithThresholds(-1, 8, true);
runWithThresholds(8, -1, true);
runWithThresholds(8, 16, true);
runWithThresholds(16, 8, true);
}
}