69 throw new AttachNotSupportedException("Invalid process identifier");
70 }
71
72 // The tool should be a different VM to the target. This check will
73 // eventually be enforced by the target VM.
74 if (!ALLOW_ATTACH_SELF && (pid == 0 || pid == CURRENT_PID)) {
75 throw new IOException("Can not attach to current VM");
76 }
77 }
78
79 /*
80 * Load agent library
81 * If isAbsolute is true then the agent library is the absolute path
82 * to the library and thus will not be expanded in the target VM.
83 * if isAbsolute is false then the agent library is just a library
84 * name and it will be expended in the target VM.
85 */
86 private void loadAgentLibrary(String agentLibrary, boolean isAbsolute, String options)
87 throws AgentLoadException, AgentInitializationException, IOException
88 {
89 InputStream in = execute("load",
90 agentLibrary,
91 isAbsolute ? "true" : "false",
92 options);
93 try {
94 int result = readInt(in);
95 if (result != 0) {
96 throw new AgentInitializationException("Agent_OnAttach failed", result);
97 }
98 } finally {
99 in.close();
100
101 }
102 }
103
104 /*
105 * Load agent library - library name will be expanded in target VM
106 */
107 public void loadAgentLibrary(String agentLibrary, String options)
108 throws AgentLoadException, AgentInitializationException, IOException
109 {
110 loadAgentLibrary(agentLibrary, false, options);
111 }
112
113 /*
114 * Load agent - absolute path of library provided to target VM
115 */
116 public void loadAgentPath(String agentLibrary, String options)
117 throws AgentLoadException, AgentInitializationException, IOException
118 {
119 loadAgentLibrary(agentLibrary, true, options);
120 }
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69 throw new AttachNotSupportedException("Invalid process identifier");
70 }
71
72 // The tool should be a different VM to the target. This check will
73 // eventually be enforced by the target VM.
74 if (!ALLOW_ATTACH_SELF && (pid == 0 || pid == CURRENT_PID)) {
75 throw new IOException("Can not attach to current VM");
76 }
77 }
78
79 /*
80 * Load agent library
81 * If isAbsolute is true then the agent library is the absolute path
82 * to the library and thus will not be expanded in the target VM.
83 * if isAbsolute is false then the agent library is just a library
84 * name and it will be expended in the target VM.
85 */
86 private void loadAgentLibrary(String agentLibrary, boolean isAbsolute, String options)
87 throws AgentLoadException, AgentInitializationException, IOException
88 {
89 String msgPrefix = "return code: ";
90 InputStream in = execute("load",
91 agentLibrary,
92 isAbsolute ? "true" : "false",
93 options);
94 BufferedReader reader = new BufferedReader(new InputStreamReader(in));
95 try (reader) {
96 String result = reader.readLine();
97 if (result == null) {
98 throw new AgentLoadException("Target VM did not respond");
99 } else if (result.startsWith(msgPrefix)) {
100 int retCode = Integer.parseInt(result.substring(msgPrefix.length()));
101 if (retCode != 0) {
102 throw new AgentInitializationException("Agent_OnAttach failed", retCode);
103 }
104 } else {
105 throw new AgentLoadException(result);
106 }
107 }
108 }
109
110 /*
111 * Load agent library - library name will be expanded in target VM
112 */
113 public void loadAgentLibrary(String agentLibrary, String options)
114 throws AgentLoadException, AgentInitializationException, IOException
115 {
116 loadAgentLibrary(agentLibrary, false, options);
117 }
118
119 /*
120 * Load agent - absolute path of library provided to target VM
121 */
122 public void loadAgentPath(String agentLibrary, String options)
123 throws AgentLoadException, AgentInitializationException, IOException
124 {
125 loadAgentLibrary(agentLibrary, true, options);
126 }
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