1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
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3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
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9 // copyright notice, this list of conditions and the following
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11 // with the distribution.
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13 // contributors may be used to endorse or promote products derived
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16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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28 #ifndef V8_DEBUG_AGENT_H_
29 #define V8_DEBUG_AGENT_H_
31 #ifdef ENABLE_DEBUGGER_SUPPORT
32 #include "../include/v8-debug.h"
38 // Forward decelrations.
39 class DebuggerAgentSession;
42 // Debugger agent which starts a socket listener on the debugger port and
43 // handles connection from a remote debugger.
44 class DebuggerAgent: public Thread {
46 DebuggerAgent(const char* name, int port)
48 isolate_(Isolate::Current()),
49 name_(StrDup(name)), port_(port),
50 server_(OS::CreateSocket()), terminate_(false),
51 session_access_(OS::CreateMutex()), session_(NULL),
52 terminate_now_(OS::CreateSemaphore(0)),
53 listening_(OS::CreateSemaphore(0)) {
54 ASSERT(isolate_->debugger_agent_instance() == NULL);
55 isolate_->set_debugger_agent_instance(this);
58 isolate_->set_debugger_agent_instance(NULL);
63 void WaitUntilListening();
65 Isolate* isolate() { return isolate_; }
69 void CreateSession(Socket* socket);
70 void DebuggerMessage(const v8::Debug::Message& message);
72 void OnSessionClosed(DebuggerAgentSession* session);
75 SmartArrayPointer<const char> name_; // Name of the embedding application.
76 int port_; // Port to use for the agent.
77 Socket* server_; // Server socket for listen/accept.
78 bool terminate_; // Termination flag.
79 Mutex* session_access_; // Mutex guarging access to session_.
80 DebuggerAgentSession* session_; // Current active session if any.
81 Semaphore* terminate_now_; // Semaphore to signal termination.
82 Semaphore* listening_;
84 friend class DebuggerAgentSession;
85 friend void DebuggerAgentMessageHandler(const v8::Debug::Message& message);
87 DISALLOW_COPY_AND_ASSIGN(DebuggerAgent);
91 // Debugger agent session. The session receives requests from the remote
92 // debugger and sends debugger events/responses to the remote debugger.
93 class DebuggerAgentSession: public Thread {
95 DebuggerAgentSession(DebuggerAgent* agent, Socket* client)
96 : Thread("v8:DbgAgntSessn"),
97 agent_(agent), client_(client) {}
99 void DebuggerMessage(Vector<uint16_t> message);
105 void DebuggerMessage(Vector<char> message);
107 DebuggerAgent* agent_;
110 DISALLOW_COPY_AND_ASSIGN(DebuggerAgentSession);
114 // Utility methods factored out to be used by the D8 shell as well.
115 class DebuggerAgentUtil {
117 static const char* const kContentLength;
119 static SmartArrayPointer<char> ReceiveMessage(const Socket* conn);
120 static bool SendConnectMessage(const Socket* conn,
121 const char* embedding_host);
122 static bool SendMessage(const Socket* conn, const Vector<uint16_t> message);
123 static bool SendMessage(const Socket* conn,
124 const v8::Handle<v8::String> message);
125 static int ReceiveAll(const Socket* conn, char* data, int len);
128 } } // namespace v8::internal
130 #endif // ENABLE_DEBUGGER_SUPPORT
132 #endif // V8_DEBUG_AGENT_H_