8027314: Java should recognize Diagnostic options if -XX:+UnlockDiagnosticVMOptions is not specified and print an informative message
Summary: clarifying the error messages associated with vm options of type diagnostic, experimental, develop, and notproduct
Reviewed-by: kvn, twisti, ctornqvi
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/*
* @test
* @bug 8027314
* @summary Warn if diagnostic or experimental vm option is used and -XX:+UnlockDiagnosticVMOptions or -XX:+UnlockExperimentalVMOptions, respectively, isn't specified. Warn if develop or notproduct vm option is used with product version of VM.
* @library /testlibrary
*/
import com.oracle.java.testlibrary.*;
public class VMOptionWarning {
public static void main(String[] args) throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+PredictedLoadedClassCount", "-version");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldContain("Error: VM option 'PredictedLoadedClassCount' is experimental and must be enabled via -XX:+UnlockExperimentalVMOptions.");
if (Platform.isDebugBuild()) {
System.out.println("Skip the rest of the tests on debug builds since diagnostic, develop, and notproduct options are available on debug builds.");
return;
}
pb = ProcessTools.createJavaProcessBuilder("-XX:+PrintInlining", "-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("Error: VM option 'PrintInlining' is diagnostic and must be enabled via -XX:+UnlockDiagnosticVMOptions.");
pb = ProcessTools.createJavaProcessBuilder("-XX:+TraceJNICalls", "-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("Error: VM option 'TraceJNICalls' is develop and is available only in debug version of VM.");
pb = ProcessTools.createJavaProcessBuilder("-XX:+TraceJVMCalls", "-version");
output = new OutputAnalyzer(pb.start());
output.shouldContain("Error: VM option 'TraceJVMCalls' is notproduct and is available only in debug version of VM.");
}
}