src/jdk.attach/share/classes/sun/tools/attach/HotSpotVirtualMachine.java

*** 37,46 ****
--- 37,48 ----
  import java.io.IOException;
  import java.io.InputStreamReader;
  import java.security.AccessController;
  import java.security.PrivilegedAction;
  import java.util.Properties;
+ import java.util.regex.Matcher;
+ import java.util.regex.Pattern;
  import java.util.stream.Collectors;
  
  /*
   * The HotSpot implementation of com.sun.tools.attach.VirtualMachine.
   */
*** 84,105 ****
       * name and it will be expended in the target VM.
       */
      private void loadAgentLibrary(String agentLibrary, boolean isAbsolute, String options)
          throws AgentLoadException, AgentInitializationException, IOException
      {
!         InputStream in = execute("load",
!                                  agentLibrary,
!                                  isAbsolute ? "true" : "false",
!                                  options);
!         try {
!             int result = readInt(in);
!             if (result != 0) {
!                 throw new AgentInitializationException("Agent_OnAttach failed", result);
              }
-         } finally {
-             in.close();
- 
          }
      }
  
      /*
       * Load agent library - library name will be expanded in target VM
--- 86,115 ----
       * name and it will be expended in the target VM.
       */
      private void loadAgentLibrary(String agentLibrary, boolean isAbsolute, String options)
          throws AgentLoadException, AgentInitializationException, IOException
      {
!         try (BufferedReader reader = new BufferedReader(
!                    new InputStreamReader(
!                             execute("load", agentLibrary,
!                                      Boolean.toString(isAbsolute), options)))) {
!             String result = reader.readLine();
!             if (result == null) {
!                 throw new AgentLoadException("Target VM did not respond");
!             } else {
!                 Matcher matcher = Pattern.compile("^return code: (\\d+)$")
!                                          .matcher(result);
!                 if (matcher.matches()) {
!                     int retCode = Integer.parseInt(matcher.group(1));
!                     if (retCode != 0) {
!                         throw new AgentInitializationException(
!                                               "Agent_OnAttach failed", retCode);
!                     }
!                 } else {
!                     throw new AgentLoadException(result);
!                 }
              }
          }
      }
  
      /*
       * Load agent library - library name will be expanded in target VM