};
+ /**
+ * A message object passed to the debug message handler.
+ */
+ class Message {
+ public:
+ /**
+ * Check type of message.
+ */
+ virtual bool IsEvent() const = 0;
+ virtual bool IsResponse() const = 0;
+ virtual DebugEvent GetEvent() const = 0;
+
+ /**
+ * Indicate whether this is a response to a continue command which will
+ * start the VM running after this is processed.
+ */
+ virtual bool WillStartRunning() const = 0;
+
+ /**
+ * Access to execution state and event data. Don't store these cross
+ * callbacks as their content becomes invalid. These objects are from the
+ * debugger event that started the debug message loop.
+ */
+ virtual Handle<Object> GetExecutionState() const = 0;
+ virtual Handle<Object> GetEventData() const = 0;
+
+ /**
+ * Get the debugger protocol JSON.
+ */
+ virtual Handle<String> GetJSON() const = 0;
+
+ /**
+ * Get the context active when the debug event happened. Note this is not
+ * the current active context as the JavaScript part of the debugger is
+ * running in it's own context which is entered at this point.
+ */
+ virtual Handle<Context> GetEventContext() const = 0;
+
+ /**
+ * Client data passed with the corresponding request if any. This is the
+ * client_data data value passed into Debug::SendCommand along with the
+ * request that led to the message or NULL if the message is an event. The
+ * debugger takes ownership of the data and will delete it even if there is
+ * no message handler.
+ */
+ virtual ClientData* GetClientData() const = 0;
+
+ virtual ~Message() {}
+ };
+
+
/**
* Debug event callback function.
*
* \param data value passed by the user to SetDebugEventListener
*/
typedef void (*EventCallback)(DebugEvent event,
- Handle<Object> exec_state,
- Handle<Object> event_data,
- Handle<Value> data);
+ Handle<Object> exec_state,
+ Handle<Object> event_data,
+ Handle<Value> data);
/**
* Debug message callback function.
*
- * \param message the debug message
+ * \param message the debug message handler message object
* \param length length of the message
* \param data the data value passed when registering the message handler
- * \param client_data the data value passed into Debug::SendCommand along
- * with the request that led to the message or NULL if the message is an
- * asynchronous event. The debugger takes ownership of the data and will
- * delete it before dying even if there is no message handler.
+
* A MessageHandler does not take posession of the message string,
* and must not rely on the data persisting after the handler returns.
*/
- typedef void (*MessageHandler)(const uint16_t* message, int length,
- ClientData* client_data);
+ typedef void (*MessageHandler)(const Message& message);
/**
* Debug host dispatch callback function.
// Public V8 debugger API message handler function. This function just delegates
// to the debugger agent through it's data parameter.
-void DebuggerAgentMessageHandler(const uint16_t* message, int length,
- v8::Debug::ClientData* client_data) {
- DebuggerAgent::instance_->DebuggerMessage(message, length);
+void DebuggerAgentMessageHandler(const v8::Debug::Message& message) {
+ DebuggerAgent::instance_->DebuggerMessage(message);
}
// static
}
-void DebuggerAgent::DebuggerMessage(const uint16_t* message, int length) {
+void DebuggerAgent::DebuggerMessage(const v8::Debug::Message& message) {
ScopedLock with(session_access_);
// Forward the message handling to the session.
if (session_ != NULL) {
- session_->DebuggerMessage(Vector<uint16_t>(const_cast<uint16_t*>(message),
- length));
+ v8::String::Value val(message.GetJSON());
+ session_->DebuggerMessage(Vector<uint16_t>(const_cast<uint16_t*>(*val),
+ val.length()));
}
}
private:
void Run();
void CreateSession(Socket* socket);
- void DebuggerMessage(const uint16_t* message, int length);
+ void DebuggerMessage(const v8::Debug::Message& message);
void CloseSession();
void OnSessionClosed(DebuggerAgentSession* session);
static DebuggerAgent* instance_;
friend class DebuggerAgentSession;
- friend void DebuggerAgentMessageHandler(const uint16_t* message, int length,
- v8::Debug::ClientData* client_data);
+ friend void DebuggerAgentMessageHandler(const v8::Debug::Message& message);
DISALLOW_COPY_AND_ASSIGN(DebuggerAgent);
};
#include "stub-cache.h"
#include "log.h"
+#include "../include/v8-debug.h"
+
namespace v8 { namespace internal {
#ifdef ENABLE_DEBUGGER_SUPPORT
return;
}
- // Process debug event
- ProcessDebugEvent(v8::Exception, event_data, false);
+ // Process debug event.
+ ProcessDebugEvent(v8::Exception, Handle<JSObject>::cast(event_data), false);
// Return to continue execution from where the exception was thrown.
}
return;
}
- // Process debug event
- ProcessDebugEvent(v8::Break, event_data, auto_continue);
+ // Process debug event.
+ ProcessDebugEvent(v8::Break,
+ Handle<JSObject>::cast(event_data),
+ auto_continue);
}
return;
}
- // Process debug event
- ProcessDebugEvent(v8::BeforeCompile, event_data, true);
+ // Process debug event.
+ ProcessDebugEvent(v8::BeforeCompile,
+ Handle<JSObject>::cast(event_data),
+ true);
}
if (caught_exception) {
return;
}
- // Process debug event
- ProcessDebugEvent(v8::AfterCompile, event_data, true);
+ // Process debug event.
+ ProcessDebugEvent(v8::AfterCompile,
+ Handle<JSObject>::cast(event_data),
+ true);
}
return;
}
// Process debug event.
- ProcessDebugEvent(v8::NewFunction, event_data, true);
+ ProcessDebugEvent(v8::NewFunction, Handle<JSObject>::cast(event_data), true);
}
void Debugger::ProcessDebugEvent(v8::DebugEvent event,
- Handle<Object> event_data,
+ Handle<JSObject> event_data,
bool auto_continue) {
HandleScope scope;
}
// First notify the message handler if any.
if (message_handler_ != NULL) {
- NotifyMessageHandler(event, exec_state, event_data, auto_continue);
+ NotifyMessageHandler(event,
+ Handle<JSObject>::cast(exec_state),
+ event_data,
+ auto_continue);
}
// Notify registered debug event listener. This can be either a C or a
// JavaScript function.
FUNCTION_CAST<v8::Debug::EventCallback>(callback_obj->proxy());
callback(event,
v8::Utils::ToLocal(Handle<JSObject>::cast(exec_state)),
- v8::Utils::ToLocal(Handle<JSObject>::cast(event_data)),
+ v8::Utils::ToLocal(event_data),
v8::Utils::ToLocal(Handle<Object>::cast(event_listener_data_)));
} else {
// JavaScript debug event listener.
const int argc = 4;
Object** argv[argc] = { Handle<Object>(Smi::FromInt(event)).location(),
exec_state.location(),
- event_data.location(),
+ Handle<Object>::cast(event_data).location(),
event_listener_data_.location() };
Handle<Object> result = Execution::TryCall(fun, Top::global(),
argc, argv, &caught_exception);
void Debugger::NotifyMessageHandler(v8::DebugEvent event,
- Handle<Object> exec_state,
- Handle<Object> event_data,
+ Handle<JSObject> exec_state,
+ Handle<JSObject> event_data,
bool auto_continue) {
HandleScope scope;
// Notify the debugger that a debug event has occurred unless auto continue is
// active in which case no event is send.
if (sendEventMessage) {
- InvokeMessageHandlerWithEvent(event_data);
+ MessageImpl message = MessageImpl::NewEvent(
+ event,
+ auto_continue,
+ Handle<JSObject>::cast(exec_state),
+ Handle<JSObject>::cast(event_data));
+ InvokeMessageHandler(message);
}
if (auto_continue && !HasCommands()) {
return;
request = v8::String::New(command.text().start(),
command.text().length());
- command.text().Dispose();
static const int kArgc = 1;
v8::Handle<Value> argv[kArgc] = { request };
v8::Local<v8::Value> response_val = fun->Call(cmd_processor, kArgc, argv);
}
// Return the result.
- InvokeMessageHandler(response, command.client_data());
+ MessageImpl message = MessageImpl::NewResponse(
+ event,
+ running,
+ Handle<JSObject>::cast(exec_state),
+ Handle<JSObject>::cast(event_data),
+ Handle<String>(Utils::OpenHandle(*response)),
+ command.client_data());
+ InvokeMessageHandler(message);
+ command.Dispose();
// Return from debug event processing if either the VM is put into the
// runnning state (through a continue command) or auto continue is active
// Calls the registered debug message handler. This callback is part of the
-// public API. Messages are kept internally as Vector<uint16_t> strings, which
-// are allocated in various places and deallocated by the calling function
-// sometime after this call.
-void Debugger::InvokeMessageHandler(v8::Handle<v8::String> output,
- v8::Debug::ClientData* data) {
+// public API.
+void Debugger::InvokeMessageHandler(MessageImpl message) {
ScopedLock with(debugger_access_);
if (message_handler_ != NULL) {
- Vector<uint16_t> text = Vector<uint16_t>::New(output->Length());
- output->Write(text.start(), 0, output->Length());
-
- message_handler_(text.start(),
- text.length(),
- data);
-
- text.Dispose();
- }
- delete data;
-}
-
-
-bool Debugger::InvokeMessageHandlerWithEvent(Handle<Object> event_data) {
- v8::HandleScope scope;
- // Call toJSONProtocol on the debug event object.
- v8::Local<v8::Object> api_event_data =
- v8::Utils::ToLocal(Handle<JSObject>::cast(event_data));
- v8::Local<v8::String> fun_name = v8::String::New("toJSONProtocol");
- v8::Local<v8::Function> fun =
- v8::Function::Cast(*api_event_data->Get(fun_name));
- v8::TryCatch try_catch;
- v8::Local<v8::Value> json_event = *fun->Call(api_event_data, 0, NULL);
- v8::Local<v8::String> json_event_string;
- if (!try_catch.HasCaught()) {
- if (!json_event->IsUndefined()) {
- json_event_string = json_event->ToString();
- if (FLAG_trace_debug_json) {
- PrintLn(json_event_string);
- }
- InvokeMessageHandler(json_event_string,
- NULL /* no user data since there was no request */);
- } else {
- InvokeMessageHandler(v8::String::Empty(), NULL);
- }
- } else {
- PrintLn(try_catch.Exception());
- return false;
+ message_handler_(message);
}
- return true;
}
}
+MessageImpl MessageImpl::NewEvent(DebugEvent event,
+ bool running,
+ Handle<JSObject> exec_state,
+ Handle<JSObject> event_data) {
+ MessageImpl message(true, event, running,
+ exec_state, event_data, Handle<String>(), NULL);
+ return message;
+}
+
+
+MessageImpl MessageImpl::NewResponse(DebugEvent event,
+ bool running,
+ Handle<JSObject> exec_state,
+ Handle<JSObject> event_data,
+ Handle<String> response_json,
+ v8::Debug::ClientData* client_data) {
+ MessageImpl message(false, event, running,
+ exec_state, event_data, response_json, client_data);
+ return message;
+}
+
+
+MessageImpl::MessageImpl(bool is_event,
+ DebugEvent event,
+ bool running,
+ Handle<JSObject> exec_state,
+ Handle<JSObject> event_data,
+ Handle<String> response_json,
+ v8::Debug::ClientData* client_data)
+ : is_event_(is_event),
+ event_(event),
+ running_(running),
+ exec_state_(exec_state),
+ event_data_(event_data),
+ response_json_(response_json),
+ client_data_(client_data) {}
+
+
+bool MessageImpl::IsEvent() const {
+ return is_event_;
+}
+
+
+bool MessageImpl::IsResponse() const {
+ return !is_event_;
+}
+
+
+DebugEvent MessageImpl::GetEvent() const {
+ return event_;
+}
+
+
+bool MessageImpl::WillStartRunning() const {
+ return running_;
+}
+
+
+v8::Handle<v8::Object> MessageImpl::GetExecutionState() const {
+ return v8::Utils::ToLocal(exec_state_);
+}
+
+
+v8::Handle<v8::Object> MessageImpl::GetEventData() const {
+ return v8::Utils::ToLocal(event_data_);
+}
+
+
+v8::Handle<v8::String> MessageImpl::GetJSON() const {
+ v8::HandleScope scope;
+
+ if (IsEvent()) {
+ // Call toJSONProtocol on the debug event object.
+ Handle<Object> fun = GetProperty(event_data_, "toJSONProtocol");
+ if (!fun->IsJSFunction()) {
+ return v8::Handle<v8::String>();
+ }
+ bool caught_exception;
+ Handle<Object> json = Execution::TryCall(Handle<JSFunction>::cast(fun),
+ event_data_,
+ 0, NULL, &caught_exception);
+ if (caught_exception || !json->IsString()) {
+ return v8::Handle<v8::String>();
+ }
+ return scope.Close(v8::Utils::ToLocal(Handle<String>::cast(json)));
+ } else {
+ return v8::Utils::ToLocal(response_json_);
+ }
+}
+
+
+v8::Handle<v8::Context> MessageImpl::GetEventContext() const {
+ return v8::Handle<v8::Context>();
+}
+
+
+v8::Debug::ClientData* MessageImpl::GetClientData() const {
+ return client_data_;
+}
+
+
CommandMessage::CommandMessage() : text_(Vector<uint16_t>::empty()),
client_data_(NULL) {
}
};
+// Message delivered to the message handler callback. This is either a debugger
+// event or the response to a command.
+class MessageImpl: public v8::Debug::Message {
+ public:
+ // Create a message object for a debug event.
+ static MessageImpl NewEvent(DebugEvent event,
+ bool running,
+ Handle<JSObject> exec_state,
+ Handle<JSObject> event_data);
+
+ // Create a message object for the response to a debug command.
+ static MessageImpl NewResponse(DebugEvent event,
+ bool running,
+ Handle<JSObject> exec_state,
+ Handle<JSObject> event_data,
+ Handle<String> response_json,
+ v8::Debug::ClientData* client_data);
+
+ // Implementation of interface v8::Debug::Message.
+ virtual bool IsEvent() const;
+ virtual bool IsResponse() const;
+ virtual DebugEvent GetEvent() const;
+ virtual bool WillStartRunning() const;
+ virtual v8::Handle<v8::Object> GetExecutionState() const;
+ virtual v8::Handle<v8::Object> GetEventData() const;
+ virtual v8::Handle<v8::String> GetJSON() const;
+ virtual v8::Handle<v8::Context> GetEventContext() const;
+ virtual v8::Debug::ClientData* GetClientData() const;
+
+ private:
+ MessageImpl(bool is_event,
+ DebugEvent event,
+ bool running,
+ Handle<JSObject> exec_state,
+ Handle<JSObject> event_data,
+ Handle<String> response_json,
+ v8::Debug::ClientData* client_data);
+
+ bool is_event_; // Does this message represent a debug event?
+ DebugEvent event_; // Debug event causing the break.
+ bool running_; // Will the VM start running after this event?
+ Handle<JSObject> exec_state_; // Current execution state.
+ Handle<JSObject> event_data_; // Data associated with the event.
+ Handle<String> response_json_; // Response JSON if message holds a response.
+ v8::Debug::ClientData* client_data_; // Client data passed with the request.
+};
+
+
// Message send by user to v8 debugger or debugger output message.
// In addition to command text it may contain a pointer to some user data
// which are expected to be passed along with the command reponse to message
Handle<JSFunction> fun);
static void OnNewFunction(Handle<JSFunction> fun);
static void ProcessDebugEvent(v8::DebugEvent event,
- Handle<Object> event_data,
+ Handle<JSObject> event_data,
bool auto_continue);
static void NotifyMessageHandler(v8::DebugEvent event,
- Handle<Object> exec_state,
- Handle<Object> event_data,
+ Handle<JSObject> exec_state,
+ Handle<JSObject> event_data,
bool auto_continue);
static void SetEventListener(Handle<Object> callback, Handle<Object> data);
static void SetMessageHandler(v8::Debug::MessageHandler handler);
int period);
// Invoke the message handler function.
- static void InvokeMessageHandler(v8::Handle<v8::String> output,
- v8::Debug::ClientData* data);
-
- // Send the JSON message for a debug event.
- static bool InvokeMessageHandlerWithEvent(Handle<Object> event_data);
+ static void InvokeMessageHandler(MessageImpl message);
// Add a debugger command to the command queue.
static void ProcessCommand(Vector<const uint16_t> command,
void Run();
};
-static void MessageHandler(const uint16_t* message, int length,
- v8::Debug::ClientData* client_data) {
+static void MessageHandler(const v8::Debug::Message& message) {
static char print_buffer[1000];
- Utf16ToAscii(message, length, print_buffer);
+ v8::String::Value json(message.GetJSON());
+ Utf16ToAscii(*json, json.length(), print_buffer);
if (IsBreakEventMessage(print_buffer)) {
// Lets test script wait until break occurs to send commands.
// Signals when a break is reported.
static int handled_client_data_instances_count = 0;
static void MessageHandlerCountingClientData(
- const uint16_t* message,
- int length,
- v8::Debug::ClientData* client_data) {
- if (client_data) {
+ const v8::Debug::Message& message) {
+ if (message.GetClientData() != NULL) {
handled_client_data_instances_count++;
}
}
}
-static void ThreadedMessageHandler(const uint16_t* message, int length,
- v8::Debug::ClientData* client_data) {
+static void ThreadedMessageHandler(const v8::Debug::Message& message) {
static char print_buffer[1000];
- Utf16ToAscii(message, length, print_buffer);
+ v8::String::Value json(message.GetJSON());
+ Utf16ToAscii(*json, json.length(), print_buffer);
if (IsBreakEventMessage(print_buffer)) {
threaded_debugging_barriers.barrier_2.Wait();
}
Barriers* breakpoints_barriers;
-static void BreakpointsMessageHandler(const uint16_t* message,
- int length,
- v8::Debug::ClientData* client_data) {
+static void BreakpointsMessageHandler(const v8::Debug::Message& message) {
static char print_buffer[1000];
- Utf16ToAscii(message, length, print_buffer);
+ v8::String::Value json(message.GetJSON());
+ Utf16ToAscii(*json, json.length(), print_buffer);
printf("%s\n", print_buffer);
fflush(stdout);
}
-static void DummyMessageHandler(const uint16_t* message,
- int length,
- v8::Debug::ClientData* client_data) {
+static void DummyMessageHandler(const v8::Debug::Message& message) {
}
// Debugger message handler which counts the number of times it is called.
static int message_handler_hit_count = 0;
-static void MessageHandlerHitCount(const uint16_t* message,
- int length,
- v8::Debug::ClientData* client_data) {
+static void MessageHandlerHitCount(const v8::Debug::Message& message) {
message_handler_hit_count++;
const int kBufferSize = 1000;
// Debugger message handler which clears the message handler while active.
static void MessageHandlerClearingMessageHandler(
- const uint16_t* message,
- int length,
- v8::Debug::ClientData* client_data) {
+ const v8::Debug::Message& message) {
message_handler_hit_count++;
// Clear debug message handler.
Barriers* host_dispatch_barriers;
-static void HostDispatchMessageHandler(const uint16_t* message,
- int length,
- v8::Debug::ClientData* client_data) {
+static void HostDispatchMessageHandler(const v8::Debug::Message& message) {
static char print_buffer[1000];
- Utf16ToAscii(message, length, print_buffer);
+ v8::String::Value json(message.GetJSON());
+ Utf16ToAscii(*json, json.length(), print_buffer);
printf("%s\n", print_buffer);
fflush(stdout);
}
projects / platform / upstream / v8.git / commitdiff