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//===-- Event.h -------------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_Event_h_
#define liblldb_Event_h_
// C Includes
// C++ Includes
#include <memory>
#include <string>
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-private.h"
#include "lldb/Core/ConstString.h"
#include "lldb/Host/Predicate.h"
namespace lldb_private {
//----------------------------------------------------------------------
// lldb::EventData
//----------------------------------------------------------------------
class EventData
{
friend class Event;
public:
EventData ();
virtual
~EventData();
virtual const ConstString &
GetFlavor () const = 0;
virtual void
Dump (Stream *s) const;
private:
virtual void
DoOnRemoval (Event *event_ptr)
{
}
DISALLOW_COPY_AND_ASSIGN (EventData);
};
//----------------------------------------------------------------------
// lldb::EventDataBytes
//----------------------------------------------------------------------
class EventDataBytes : public EventData
{
public:
//------------------------------------------------------------------
// Constructors
//------------------------------------------------------------------
EventDataBytes ();
EventDataBytes (const char *cstr);
EventDataBytes (const void *src, size_t src_len);
~EventDataBytes() override;
//------------------------------------------------------------------
// Member functions
//------------------------------------------------------------------
const ConstString &
GetFlavor () const override;
void
Dump (Stream *s) const override;
const void *
GetBytes() const;
size_t
GetByteSize() const;
void
SetBytes (const void *src, size_t src_len);
void
SwapBytes (std::string &new_bytes);
void
SetBytesFromCString (const char *cstr);
//------------------------------------------------------------------
// Static functions
//------------------------------------------------------------------
static const EventDataBytes *
GetEventDataFromEvent (const Event *event_ptr);
static const void *
GetBytesFromEvent (const Event *event_ptr);
static size_t
GetByteSizeFromEvent (const Event *event_ptr);
static const ConstString &
GetFlavorString ();
private:
std::string m_bytes;
DISALLOW_COPY_AND_ASSIGN (EventDataBytes);
};
//----------------------------------------------------------------------
// lldb::Event
//----------------------------------------------------------------------
class Event
{
friend class Broadcaster;
friend class Listener;
friend class EventData;
public:
Event(Broadcaster *broadcaster, uint32_t event_type, EventData *data = nullptr);
Event(uint32_t event_type, EventData *data = nullptr);
~Event ();
void
Dump (Stream *s) const;
EventData *
GetData ()
{
return m_data_ap.get();
}
const EventData *
GetData () const
{
return m_data_ap.get();
}
void
SetData (EventData *new_data)
{
m_data_ap.reset (new_data);
}
uint32_t
GetType () const
{
return m_type;
}
void
SetType (uint32_t new_type)
{
m_type = new_type;
}
Broadcaster *
GetBroadcaster () const
{
return m_broadcaster;
}
bool
BroadcasterIs (Broadcaster *broadcaster)
{
return broadcaster == m_broadcaster;
}
void
Clear()
{
m_data_ap.reset();
}
private:
// This is only called by Listener when it pops an event off the queue for
// the listener. It calls the Event Data's DoOnRemoval() method, which is
// virtual and can be overridden by the specific data classes.
void
DoOnRemoval ();
// Called by Broadcaster::BroadcastEvent prior to letting all the listeners
// know about it update the contained broadcaster so that events can be
// popped off one queue and re-broadcast to others.
void
SetBroadcaster (Broadcaster *broadcaster)
{
m_broadcaster = broadcaster;
}
Broadcaster * m_broadcaster; // The broadcaster that sent this event
uint32_t m_type; // The bit describing this event
std::unique_ptr<EventData> m_data_ap; // User specific data for this event
DISALLOW_COPY_AND_ASSIGN (Event);
Event(); // Disallow default constructor
};
} // namespace lldb_private
#endif // liblldb_Event_h_
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