29 import java.io.FileInputStream;
  30 import java.io.FileOutputStream;
  31 import java.io.IOException;
  32 import java.io.InputStream;
  33 import java.io.OutputStream;
  34 import java.io.RandomAccessFile;
  35 import java.lang.instrument.ClassFileTransformer;
  36 import java.lang.instrument.Instrumentation;
  37 import java.net.ServerSocket;
  38 import java.net.Socket;
  39 import java.security.ProtectionDomain;
  40 import java.util.concurrent.CountDownLatch;
  41 
  42 
  43 /**
  44  * @test
  45  * @key jfr
  46  * @summary This test runs JFR with a javaagent that reads/writes files and
  47  * sockets during every class definition. This is to verify that the i/o
  48  * instrumentation in JFR does not interfere with javaagents.

  49  *
  50  * @library /test/lib /test/jdk
  51  * @modules java.instrument
  52  *
  53  * @run shell MakeJAR.sh EvilInstrument 'Can-Redefine-Classes: true'
  54  * @run main/othervm -javaagent:EvilInstrument.jar jdk.jfr.event.io.EvilInstrument
  55  */
  56 
  57 public class EvilInstrument {
  58 
  59     CountDownLatch socketEchoReady = new CountDownLatch(1);
  60     ServerSocket ss;
  61 
  62     /**
  63      * Thread that echos everything from a socket.
  64      */
  65     class SocketEcho extends Thread
  66     {
  67         public SocketEcho() {
  68             setDaemon(true);

  29 import java.io.FileInputStream;
  30 import java.io.FileOutputStream;
  31 import java.io.IOException;
  32 import java.io.InputStream;
  33 import java.io.OutputStream;
  34 import java.io.RandomAccessFile;
  35 import java.lang.instrument.ClassFileTransformer;
  36 import java.lang.instrument.Instrumentation;
  37 import java.net.ServerSocket;
  38 import java.net.Socket;
  39 import java.security.ProtectionDomain;
  40 import java.util.concurrent.CountDownLatch;
  41 
  42 
  43 /**
  44  * @test
  45  * @key jfr
  46  * @summary This test runs JFR with a javaagent that reads/writes files and
  47  * sockets during every class definition. This is to verify that the i/o
  48  * instrumentation in JFR does not interfere with javaagents.
  49  * @requires vm.hasJFR
  50  *
  51  * @library /test/lib /test/jdk
  52  * @modules java.instrument
  53  *
  54  * @run shell MakeJAR.sh EvilInstrument 'Can-Redefine-Classes: true'
  55  * @run main/othervm -javaagent:EvilInstrument.jar jdk.jfr.event.io.EvilInstrument
  56  */
  57 
  58 public class EvilInstrument {
  59 
  60     CountDownLatch socketEchoReady = new CountDownLatch(1);
  61     ServerSocket ss;
  62 
  63     /**
  64      * Thread that echos everything from a socket.
  65      */
  66     class SocketEcho extends Thread
  67     {
  68         public SocketEcho() {
  69             setDaemon(true);