Ich versuche, einfach Java-Profiler zu machen und ClassLoader dafür zu verwenden.ClassLoader mit RMI-Aufruf
Dies ist meine Implementierung von Classloader:
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
public class CustomClassLoader extends ClassLoader {
private Notifier notifier;
public CustomClassLoader() {
super();
}
public CustomClassLoader(ClassLoader parent) {
super(parent);
}
private void initNotifier() {
if (notifier != null) return;
try {
System.out.println("2");
Registry registry = LocateRegistry.getRegistry(Const.registryPort);
System.out.println("3");
notifier = (Notifier) registry.lookup(Const.stubName);
System.out.println("4");
} catch (Exception e) {
e.printStackTrace();
System.exit(1);
}
}
@Override
protected synchronized Class<?> loadClass(String name, boolean resolve)
throws ClassNotFoundException {
System.out.println("0");
Class clazz = super.loadClass(name, resolve);
System.out.println("1");
initNotifier();
System.out.println("5");
try {
notifier.classLoaded(name);
System.out.println("6");
} catch (RemoteException e) {
e.printStackTrace();
System.exit(1);
}
return clazz;
}
}
Wenn ich habe versuchen, diese Klassenlade ich diese Ausgabe erhalten zu verwenden (ich habe versucht 1.6_37 und 1.7_10 jkd zu verwenden):
C:\Users\Scepion1d>java -cp C:\Users\Scepion1d\Dropbox\Workspace\IntellijIDEA\pr
ofiler\out\artifacts\loader\loader.jar;C:\Users\Scepion1d\Dropbox\Workspace\Inte
llijIDEA\app\out\production\app -Djava.system.class.loader=CustomClassLoader Main
0
1
2
0
1
2
3
0
1
2
3
java.lang.IllegalArgumentException: Non-positive latency: 0
at sun.misc.GC$LatencyRequest.<init>(GC.java:190)
at sun.misc.GC$LatencyRequest.<init>(GC.java:156)
at sun.misc.GC.requestLatency(GC.java:254)
at sun.rmi.transport.DGCClient$EndpointEntry.lookup(DGCClient.java:212)
at sun.rmi.transport.DGCClient.registerRefs(DGCClient.java:120)
at sun.rmi.transport.ConnectionInputStream.registerRefs(ConnectionInputS
tream.java:80)
at sun.rmi.transport.StreamRemoteCall.releaseInputStream(StreamRemoteCal
l.java:138)
at sun.rmi.transport.StreamRemoteCall.done(StreamRemoteCall.java:292)
at sun.rmi.server.UnicastRef.done(UnicastRef.java:431)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at CustomClassLoader.initNotifier(CustomClassLoader.java:22)
at CustomClassLoader.loadClass(CustomClassLoader.java:35)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at sun.security.jca.ProviderConfig$3.run(ProviderConfig.java:234)
at java.security.AccessController.doPrivileged(Native Method)
at sun.security.jca.ProviderConfig.doLoadProvider(ProviderConfig.java:22
5)
at sun.security.jca.ProviderConfig.getProvider(ProviderConfig.java:205)
at sun.security.jca.ProviderList.getProvider(ProviderList.java:215)
at sun.security.jca.ProviderList.getService(ProviderList.java:313)
at sun.security.jca.GetInstance.getInstance(GetInstance.java:140)
at java.security.Security.getImpl(Security.java:659)
at java.security.MessageDigest.getInstance(MessageDigest.java:129)
at java.rmi.dgc.VMID.computeAddressHash(VMID.java:140)
at java.rmi.dgc.VMID.<clinit>(VMID.java:27)
at sun.rmi.transport.DGCClient.<clinit>(DGCClient.java:66)
at sun.rmi.transport.ConnectionInputStream.registerRefs(ConnectionInputS
tream.java:80)
at sun.rmi.transport.StreamRemoteCall.releaseInputStream(StreamRemoteCal
l.java:138)
at sun.rmi.transport.StreamRemoteCall.done(StreamRemoteCall.java:292)
at sun.rmi.server.UnicastRef.done(UnicastRef.java:431)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at CustomClassLoader.initNotifier(CustomClassLoader.java:22)
at CustomClassLoader.loadClass(CustomClassLoader.java:35)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at sun.security.jca.ProviderConfig$3.run(ProviderConfig.java:234)
at java.security.AccessController.doPrivileged(Native Method)
at sun.security.jca.ProviderConfig.doLoadProvider(ProviderConfig.java:22
5)
at sun.security.jca.ProviderConfig.getProvider(ProviderConfig.java:205)
at sun.security.jca.ProviderList.getProvider(ProviderList.java:215)
at sun.security.jca.ProviderList$3.get(ProviderList.java:130)
at sun.security.jca.ProviderList$3.get(ProviderList.java:125)
at java.util.AbstractList$Itr.next(AbstractList.java:345)
at java.security.SecureRandom.getPrngAlgorithm(SecureRandom.java:522)
at java.security.SecureRandom.getDefaultPRNG(SecureRandom.java:165)
at java.security.SecureRandom.<init>(SecureRandom.java:133)
at java.rmi.server.UID.<init>(UID.java:92)
at java.rmi.server.ObjID.<clinit>(ObjID.java:71)
at java.rmi.registry.LocateRegistry.getRegistry(LocateRegistry.java:158)
at java.rmi.registry.LocateRegistry.getRegistry(LocateRegistry.java:106)
at java.rmi.registry.LocateRegistry.getRegistry(LocateRegistry.java:73)
at CustomClassLoader.initNotifier(CustomClassLoader.java:20)
at CustomClassLoader.loadClass(CustomClassLoader.java:35)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Ich habe gedacht, dass das Problem in der RMI-Server ist, aber ich schrieb einen anderen RMI-Client und es funktioniert gut. Weiß jemand, wo ist das Problem (s) und wie man es (sie) löst?
Sie sollten eine andere (neuere oder andere Version) Java versuchen und wenn es nicht hilft, dann senden Sie einen Fehler (http://bugs.sun.com/) – tcb
Dies ist wirklich eine versehentliche Rekursion. Werfen Sie einen guten Blick auf die Stack-Trace. Sie scheinen Ihren Klassenlader zu sehr zu benutzen. – EJP
Um es weiter zu verfolgen, können Sie auch 'name' zu Ihrem Ausdruck für" 0 "hinzufügen. – JoshDM