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// Copyright 2006-2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef V8_DEBUG_AGENT_H_
#define V8_DEBUG_AGENT_H_
#ifdef ENABLE_DEBUGGER_SUPPORT
#include "../include/v8-debug.h"
#include "platform.h"
namespace v8 {
namespace internal {
// Forward decelrations.
class DebuggerAgentSession;
// Debugger agent which starts a socket listener on the debugger port and
// handles connection from a remote debugger.
class DebuggerAgent: public Thread {
public:
explicit DebuggerAgent(const char* name, int port)
: name_(StrDup(name)), port_(port),
server_(OS::CreateSocket()), terminate_(false),
session_access_(OS::CreateMutex()), session_(NULL),
terminate_now_(OS::CreateSemaphore(0)),
listening_(OS::CreateSemaphore(0)) {
ASSERT(instance_ == NULL);
instance_ = this;
}
~DebuggerAgent() {
instance_ = NULL;
delete server_;
}
void Shutdown();
void WaitUntilListening();
private:
void Run();
void CreateSession(Socket* socket);
void DebuggerMessage(const v8::Debug::Message& message);
void CloseSession();
void OnSessionClosed(DebuggerAgentSession* session);
SmartPointer<const char> name_; // Name of the embedding application.
int port_; // Port to use for the agent.
Socket* server_; // Server socket for listen/accept.
bool terminate_; // Termination flag.
Mutex* session_access_; // Mutex guarging access to session_.
DebuggerAgentSession* session_; // Current active session if any.
Semaphore* terminate_now_; // Semaphore to signal termination.
Semaphore* listening_;
static DebuggerAgent* instance_;
friend class DebuggerAgentSession;
friend void DebuggerAgentMessageHandler(const v8::Debug::Message& message);
DISALLOW_COPY_AND_ASSIGN(DebuggerAgent);
};
// Debugger agent session. The session receives requests from the remote
// debugger and sends debugger events/responses to the remote debugger.
class DebuggerAgentSession: public Thread {
public:
DebuggerAgentSession(DebuggerAgent* agent, Socket* client)
: agent_(agent), client_(client) {}
void DebuggerMessage(Vector<uint16_t> message);
void Shutdown();
private:
void Run();
void DebuggerMessage(Vector<char> message);
DebuggerAgent* agent_;
Socket* client_;
DISALLOW_COPY_AND_ASSIGN(DebuggerAgentSession);
};
// Utility methods factored out to be used by the D8 shell as well.
class DebuggerAgentUtil {
public:
static const char* kContentLength;
static int kContentLengthSize;
static SmartPointer<char> ReceiveMessage(const Socket* conn);
static bool SendConnectMessage(const Socket* conn,
const char* embedding_host);
static bool SendMessage(const Socket* conn, const Vector<uint16_t> message);
static bool SendMessage(const Socket* conn,
const v8::Handle<v8::String> message);
static int ReceiveAll(const Socket* conn, char* data, int len);
};
} } // namespace v8::internal
#endif // ENABLE_DEBUGGER_SUPPORT
#endif // V8_DEBUG_AGENT_H_
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