8232588: G1 concurrent System.gc can return early or late
8233279: G1: GCLocker GC with +GCLockerInvokesConcurrent spins while cycle in progress
Summary: Refactor G1CH::try_collect and fix bugs with concurrent collections.
Reviewed-by: tschatzl, sjohanss
/*
* Copyright (c) 2006, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* 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).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test AnnotationSecurityTest.java
* @bug 6366543 6370080
* @summary Test that having a security manager doesn't trigger a
* NotCompliantMBeanException
* @author Daniel Fuchs, Yves Joan
*
* @modules java.desktop
* java.management
*
* @run clean AnnotationSecurityTest Described UnDescribed DescribedMBean
* UnDescribedMBean SqeDescriptorKey DescribedMX DescribedMXBean
* @run build AnnotationSecurityTest Described UnDescribed DescribedMBean
* UnDescribedMBean SqeDescriptorKey DescribedMX DescribedMXBean
* @run main/othervm AnnotationSecurityTest
*/
// -Djava.security.debug=access,domain,policy
import java.io.File;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.lang.reflect.Method;
import javax.management.MBeanServer;
import javax.management.ObjectName;
/**
*
* @author Sun Microsystems, 2005 - All rights reserved.
*/
public class AnnotationSecurityTest {
/** Creates a new instance of AnnotationSecurityTest */
public AnnotationSecurityTest() {
}
public static void main(String[] argv) {
AnnotationSecurityTest test = new AnnotationSecurityTest();
test.run();
}
public void run() {
try {
final String testSrc = System.getProperty("test.src");
final String codeBase = System.getProperty("test.classes");
final String policy = testSrc + File.separator +
"AnnotationSecurityTest.policy";
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final File pf = new File(policy);
if (!pf.exists())
throw new IOException("policy file not found: " + policy);
if (!pf.canRead())
throw new IOException("policy file not readable: " + policy);
System.out.println("Policy="+policy);
System.setProperty("java.security.policy",policy);
System.setSecurityManager(new SecurityManager());
// We check that 6370080 is fixed.
//
try {
final Method m1 =
DescribedMBean.class.getMethod("getStringProp");
final Method m2 =
DescribedMBean.class.getMethod("setStringProp",
String.class);
m1.getAnnotations();
m2.getAnnotations();
} catch (SecurityException x) {
System.err.println("ERROR: 6370080 not fixed.");
throw new IllegalStateException("ERROR: 6370080 not fixed.",x);
}
// Do the test: we should be able to register these 3 MBeans....
// We now test that the behaviour described in 6366543 does no
// longer appears now that 6370080 is fixed.
//
final ObjectName name1 =
new ObjectName("defaultDomain:class=UnDescribed");
UnDescribed unDescribedMBean = new UnDescribed();
System.out.println("\nWe register an MBean where DescriptorKey is " +
"not used at all");
mbs.registerMBean(unDescribedMBean, name1);
System.out.println("\n\tOK - The MBean "
+ name1 + " is registered = " + mbs.isRegistered(name1));
final ObjectName name2 =
new ObjectName("defaultDomain:class=Described");
final Described describedMBean = new Described();
System.out.println("\nWe register an MBean with exactly the " +
"same management"
+ " interface as above and where DescriptorKey is used.");
mbs.registerMBean(describedMBean, name2);
System.out.println("\n\tOK - The MBean "
+ name2 + " is registered = " + mbs.isRegistered(name2));
final ObjectName name3 =
new ObjectName("defaultDomain:class=DescribedMX");
final DescribedMX describedMXBean = new DescribedMX();
System.out.println("\nWe register an MXBean with exactly the " +
"same management"
+ " interface as above and where DescriptorKey is used.");
mbs.registerMBean(describedMXBean, name3);
System.out.println("\n\tOK - The MXBean "
+ name3 + " is registered = " + mbs.isRegistered(name3));
System.out.println("\nAll three MBeans correctly registered...");
// We check that we don't have getAttribute() permission - as
// it's been voluntarily omitted from our policy file.
// If we don't get the Security Exception there is probably
// a security configuration pb...
//
try {
// We don't have getAttribute() permission, so this must fail.
System.err.println("Trying getStringProp() - should fail");
mbs.getAttribute(name1,"StringProp");
System.err.println("ERROR: didn't get expected SecurityException"
+"\n\t check security configuration & policy file: "+
policy);
throw new RuntimeException("getStringProp() did not get a " +
"SecurityException!");
} catch (SecurityException x) {
// OK!
System.err.println("getStringProp() - failed");
}
} catch (Exception t) {
t.printStackTrace();
if (t instanceof RuntimeException)
throw (RuntimeException)t;
else throw new RuntimeException(t);
}
}
}