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/*
Copyright (C) 1998-2009 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __pbd_abstract_ui_h__
#define __pbd_abstract_ui_h__
#include <map>
#include <string>
#include <pthread.h>
#include <glibmm/threads.h>
#include "pbd/libpbd_visibility.h"
#include "pbd/receiver.h"
#include "pbd/ringbufferNPT.h"
#include "pbd/signals.h"
#include "pbd/base_ui.h"
/* We have a special case in libpbd of a template class that gets instantiated
* as the base class of several classes in other libraries. It is not possible
* to use LIBFOO_API to mark this visible, because the FOO in each case is
* different. So we define this generic visible/export/hidden/import pair
* of macros to try to deal with this special case. These should NEVER be
* used anywhere except AbstractUI<T> (or similar cases if they arise.
*
* Note the assumption here that other libs are being built as DLLs if this one is.
*/
#ifdef ABSTRACT_UI_EXPORTS
#define ABSTRACT_UI_API LIBPBD_DLL_EXPORT
#else
#define ABSTRACT_UI_API LIBPBD_DLL_IMPORT
#endif
class Touchable;
template<typename RequestObject>
class ABSTRACT_UI_API AbstractUI : public BaseUI
{
public:
AbstractUI (const std::string& name);
virtual ~AbstractUI() {}
void register_thread (pthread_t, std::string, uint32_t num_requests);
void call_slot (EventLoop::InvalidationRecord*, const boost::function<void()>&);
Glib::Threads::Mutex& slot_invalidation_mutex() { return request_buffer_map_lock; }
Glib::Threads::Mutex request_buffer_map_lock;
Glib::Threads::Mutex request_invalidation_lock;
static void* request_buffer_factory (uint32_t num_requests);
protected:
struct RequestBuffer : public PBD::RingBufferNPT<RequestObject> {
bool dead;
RequestBuffer (uint32_t size)
: PBD::RingBufferNPT<RequestObject> (size)
, dead (false) {}
};
typedef typename RequestBuffer::rw_vector RequestBufferVector;
#if defined(COMPILER_MINGW) && defined(PTW32_VERSION)
struct pthread_cmp
{
bool operator() (const ptw32_handle_t& thread1, const ptw32_handle_t& thread2)
{
return thread1.p < thread2.p;
}
};
typedef typename std::map<pthread_t,RequestBuffer*, pthread_cmp>::iterator RequestBufferMapIterator;
typedef std::map<pthread_t,RequestBuffer*, pthread_cmp> RequestBufferMap;
#else
typedef typename std::map<pthread_t,RequestBuffer*>::iterator RequestBufferMapIterator;
typedef std::map<pthread_t,RequestBuffer*> RequestBufferMap;
#endif
RequestBufferMap request_buffers;
static Glib::Threads::Private<RequestBuffer> per_thread_request_buffer;
Glib::Threads::Mutex request_list_lock;
std::list<RequestObject*> request_list;
RequestObject* get_request (RequestType);
void handle_ui_requests ();
void send_request (RequestObject *);
virtual void do_request (RequestObject *) = 0;
PBD::ScopedConnection new_thread_connection;
};
#endif /* __pbd_abstract_ui_h__ */
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