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// Copyright 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_D8_DEBUG_H_
#define V8_D8_DEBUG_H_
#include "d8.h"
#include "debug.h"
namespace v8 {
void HandleDebugEvent(DebugEvent event,
Handle<Object> exec_state,
Handle<Object> event_data,
Handle<Value> data);
// Start the remove debugger connecting to a V8 debugger agent on the specified
// port.
void RunRemoteDebugger(int port);
// Forward declerations.
class RemoteDebuggerEvent;
class ReceiverThread;
// Remote debugging class.
class RemoteDebugger {
public:
explicit RemoteDebugger(int port)
: port_(port),
event_access_(i::OS::CreateMutex()),
event_available_(i::OS::CreateSemaphore(0)),
head_(NULL), tail_(NULL) {}
void Run();
// Handle events from the subordinate threads.
void MessageReceived(i::SmartPointer<char> message);
void KeyboardCommand(i::SmartPointer<char> command);
void ConnectionClosed();
private:
// Add new debugger event to the list.
void AddEvent(RemoteDebuggerEvent* event);
// Read next debugger event from the list.
RemoteDebuggerEvent* GetEvent();
// Handle a message from the debugged V8.
void HandleMessageReceived(char* message);
// Handle a keyboard command.
void HandleKeyboardCommand(char* command);
// Get connection to agent in debugged V8.
i::Socket* conn() { return conn_; }
int port_; // Port used to connect to debugger V8.
i::Socket* conn_; // Connection to debugger agent in debugged V8.
// Linked list of events from debugged V8 and from keyboard input. Access to
// the list is guarded by a mutex and a semaphore signals new items in the
// list.
i::Mutex* event_access_;
i::Semaphore* event_available_;
RemoteDebuggerEvent* head_;
RemoteDebuggerEvent* tail_;
friend class ReceiverThread;
};
// Thread reading from debugged V8 instance.
class ReceiverThread: public i::Thread {
public:
explicit ReceiverThread(RemoteDebugger* remote_debugger)
: Thread("d8:ReceiverThrd"),
remote_debugger_(remote_debugger) {}
~ReceiverThread() {}
void Run();
private:
RemoteDebugger* remote_debugger_;
};
// Thread reading keyboard input.
class KeyboardThread: public i::Thread {
public:
explicit KeyboardThread(RemoteDebugger* remote_debugger)
: Thread("d8:KeyboardThrd"),
remote_debugger_(remote_debugger) {}
~KeyboardThread() {}
void Run();
private:
RemoteDebugger* remote_debugger_;
};
// Events processed by the main deubgger thread.
class RemoteDebuggerEvent {
public:
RemoteDebuggerEvent(int type, i::SmartPointer<char> data)
: type_(type), data_(data), next_(NULL) {
ASSERT(type == kMessage || type == kKeyboard || type == kDisconnect);
}
static const int kMessage = 1;
static const int kKeyboard = 2;
static const int kDisconnect = 3;
int type() { return type_; }
char* data() { return *data_; }
private:
void set_next(RemoteDebuggerEvent* event) { next_ = event; }
RemoteDebuggerEvent* next() { return next_; }
int type_;
i::SmartPointer<char> data_;
RemoteDebuggerEvent* next_;
friend class RemoteDebugger;
};
} // namespace v8
#endif // V8_D8_DEBUG_H_
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