media/mtransport/sigslot.h

// sigslot.h: Signal/Slot classes
//
// Written by Sarah Thompson (sarah@telergy.com) 2002.
//
// License: Public domain. You are free to use this code however you like, with
// the proviso that
//          the author takes on no responsibility or liability for any use.
//
// QUICK DOCUMENTATION
//
//				(see also the full documentation at
// http://sigslot.sourceforge.net/)
//
//		#define switches
//			SIGSLOT_PURE_ISO			- Define this to
// force  ISO  C++ compliance. This also disables
//										  all
// of  the  thread safety support on platforms where it is
//										  available.
//
//			SIGSLOT_USE_POSIX_THREADS	- Force use of Posix
// threads  when using a C++ compiler other than
//										  gcc
// on  a  platform that supports Posix threads. (When using gcc,
//										  this
// is  the  default - use SIGSLOT_PURE_ISO to disable this if
//										  necessary)
//
//			SIGSLOT_DEFAULT_MT_POLICY	- Where thread support
// is  enabled, this defaults to multi_threaded_global.
//										  Otherwise,
// the  default is single_threaded. #define this yourself to
//										  override
// the  default. In pure ISO mode, anything other than
//										  single_threaded
// will cause a compiler error.
//
//		PLATFORM NOTES
//
//			Win32						- On
// Win32,  the  WIN32 symbol must be #defined. Most mainstream
//										  compilers
// do  this by default, but you may need to define it
//										  yourself
// if  your  build environment is less standard. This causes
//										  the
// Win32  thread  support to be compiled in and used automatically.
//
//			Unix/Linux/BSD, etc.		- If you're using gcc,
// it  is  assumed that you have Posix threads
//										  available,
// so  they are used automatically. You can override this
//										  (as
// under  Windows) with the SIGSLOT_PURE_ISO switch. If you're using
//										  something
// other  than gcc but still want to use Posix threads, you
//										  need
// to #define  SIGSLOT_USE_POSIX_THREADS.
//
//			ISO C++						- If
// none  of  the  supported platforms are detected, or if
//										  SIGSLOT_PURE_ISO
// is defined, all multithreading support is turned off,
//										  along
// with  any  code that might cause a pure ISO C++ environment to
//										  complain.
// Before  you ask, gcc -ansi -pedantic won't compile this
//										  library,
// but  gcc -ansi is fine. Pedantic mode seems to throw a lot of
//										  errors
// that  aren't really there. If you feel like investigating this,
//										  please
// contact  the author.
//
//
//		THREADING MODES
//
//			single_threaded				- Your program
// is  assumed to be single threaded from the point of view
//										  of
// signal/slot  usage (i.e. all objects using signals and slots are
//										  created
// and  destroyed from a single thread). Behaviour if objects are
//										  destroyed
// concurrently is undefined (i.e. you'll get the occasional
//										  segmentation
// fault/memory exception).
//
//			multi_threaded_global		- Your program is
// assumed  to be multi threaded. Objects using signals and
//										  slots
// can  be  safely created and destroyed from any thread, even when
//										  connections
// exist. In multi_threaded_global mode, this is achieved by a
//										  single
// global  mutex (actually a critical section on Windows because they
//										  are
// faster).  This option uses less OS resources, but results in more
//										  opportunities
// for contention, possibly resulting in more context switches
//										  than
// are  strictly necessary.
//
//			multi_threaded_local		- Behaviour in this mode
// is  essentially the same as multi_threaded_global,
//										  except
// that  each  signal, and each object that inherits has_slots, all
//										  have
// their  own  mutex/critical section. In practice, this means that
//										  mutex
// collisions (and hence context switches) only happen if they are
//										  absolutely
// essential. However, on some platforms, creating a lot of
//										  mutexes
// can  slow  down the whole OS, so use this option with care.
//
//		USING THE LIBRARY
//
//			See the full documentation at
// http://sigslot.sourceforge.net/
//
//
// Libjingle specific:
// This file has been modified such that has_slots and signalx do not have to be
// using the same threading requirements. E.g. it is possible to connect a
// has_slots<single_threaded> and signal0<multi_threaded_local> or
// has_slots<multi_threaded_local> and signal0<single_threaded>.
// If has_slots is single threaded the user must ensure that it is not trying
// to connect or disconnect to signalx concurrently or data race may occur.
// If signalx is single threaded the user must ensure that disconnect, connect
// or signal is not happening concurrently or data race may occur.

#ifndef TALK_BASE_SIGSLOT_H__
#define TALK_BASE_SIGSLOT_H__

#include <list>
#include <set>
#include <stdlib.h>

// On our copy of sigslot.h, we set single threading as default.
#define SIGSLOT_DEFAULT_MT_POLICY single_threaded

// For now, this avoids windows.h in bindings (PeerConnectionImpl.h) on WIN32
// TODO: wrap win32 crit section and move to another file instead (Bug 932570)
#define SIGSLOT_LEAVE_OUT_MULTITHREADING 1

#if defined(SIGSLOT_PURE_ISO) || (!defined(WIN32) && !defined(__GNUG__) && \
                                  !defined(SIGSLOT_USE_POSIX_THREADS))
#define _SIGSLOT_SINGLE_THREADED
#elif defined(WIN32)
#define _SIGSLOT_HAS_WIN32_THREADS
#ifndef SIGSLOT_LEAVE_OUT_MULTITHREADING
#if !defined(WIN32_LEAN_AND_MEAN)
#define WIN32_LEAN_AND_MEAN
#endif
#include "windows.h"
#endif
#elif defined(__GNUG__) || defined(SIGSLOT_USE_POSIX_THREADS)
#define _SIGSLOT_HAS_POSIX_THREADS
#include <pthread.h>
#else
#define _SIGSLOT_SINGLE_THREADED
#endif

#ifndef SIGSLOT_DEFAULT_MT_POLICY
#ifdef _SIGSLOT_SINGLE_THREADED
#define SIGSLOT_DEFAULT_MT_POLICY single_threaded
#else
#define SIGSLOT_DEFAULT_MT_POLICY multi_threaded_local
#endif
#endif

// TODO: change this namespace to talk_base?
namespace sigslot {

class single_threaded {
 public:
  single_threaded() { ; }

  virtual ~single_threaded() { ; }

  virtual void lock() { ; }

  virtual void unlock() { ; }
};

#ifndef SIGSLOT_LEAVE_OUT_MULTITHREADING
#ifdef _SIGSLOT_HAS_WIN32_THREADS

// The multi threading policies only get compiled in if they are enabled.
class multi_threaded_global {
 public:
  multi_threaded_global() {
    static bool isinitialised = false;

    if (!isinitialised) {
      InitializeCriticalSection(get_critsec());
      isinitialised = true;
    }
  }

  multi_threaded_global(const multi_threaded_global&) { ; }

  virtual ~multi_threaded_global() { ; }

  virtual void lock() { EnterCriticalSection(get_critsec()); }

  virtual void unlock() { LeaveCriticalSection(get_critsec()); }

 private:
  CRITICAL_SECTION* get_critsec() {
    static CRITICAL_SECTION g_critsec;
    return &g_critsec;
  }
};

class multi_threaded_local {
 public:
  multi_threaded_local() { InitializeCriticalSection(&m_critsec); }

  multi_threaded_local(const multi_threaded_local&) {
    InitializeCriticalSection(&m_critsec);
  }

  virtual ~multi_threaded_local() { DeleteCriticalSection(&m_critsec); }

  virtual void lock() { EnterCriticalSection(&m_critsec); }

  virtual void unlock() { LeaveCriticalSection(&m_critsec); }

 private:
  CRITICAL_SECTION m_critsec;
};
#endif  // _SIGSLOT_HAS_WIN32_THREADS

#ifdef _SIGSLOT_HAS_POSIX_THREADS
// The multi threading policies only get compiled in if they are enabled.
class multi_threaded_global {
 public:
  multi_threaded_global() { pthread_mutex_init(get_mutex(), NULL); }

  multi_threaded_global(const multi_threaded_global&) { ; }

  virtual ~multi_threaded_global() { ; }

  virtual void lock() { pthread_mutex_lock(get_mutex()); }

  virtual void unlock() { pthread_mutex_unlock(get_mutex()); }

 private:
  pthread_mutex_t* get_mutex() {
    static pthread_mutex_t g_mutex;
    return &g_mutex;
  }
};

class multi_threaded_local {
 public:
  multi_threaded_local() { pthread_mutex_init(&m_mutex, NULL); }

  multi_threaded_local(const multi_threaded_local&) {
    pthread_mutex_init(&m_mutex, NULL);
  }

  virtual ~multi_threaded_local() { pthread_mutex_destroy(&m_mutex); }

  virtual void lock() { pthread_mutex_lock(&m_mutex); }

  virtual void unlock() { pthread_mutex_unlock(&m_mutex); }

 private:
  pthread_mutex_t m_mutex;
};
#endif  // _SIGSLOT_HAS_POSIX_THREADS
#endif  // SIGSLOT_LEAVE_OUT_MULTITHREADING

template <class mt_policy>
class lock_block {
 public:
  mt_policy* m_mutex;

  explicit lock_block(mt_policy* mtx) : m_mutex(mtx) { m_mutex->lock(); }

  ~lock_block() { m_mutex->unlock(); }
};

class has_slots_interface;

template <class mt_policy>
class _connection_base0 {
 public:
  virtual ~_connection_base0() {}
  virtual has_slots_interface* getdest() const = 0;
  virtual void emit() = 0;
  virtual _connection_base0* clone() = 0;
  virtual _connection_base0* duplicate(has_slots_interface* pnewdest) = 0;
};

template <class arg1_type, class mt_policy>
class _connection_base1 {
 public:
  virtual ~_connection_base1() {}
  virtual has_slots_interface* getdest() const = 0;
  virtual void emit(arg1_type) = 0;
  virtual _connection_base1<arg1_type, mt_policy>* clone() = 0;
  virtual _connection_base1<arg1_type, mt_policy>* duplicate(
      has_slots_interface* pnewdest) = 0;
};

template <class arg1_type, class arg2_type, class mt_policy>
class _connection_base2 {
 public:
  virtual ~_connection_base2() {}
  virtual has_slots_interface* getdest() const = 0;
  virtual void emit(arg1_type, arg2_type) = 0;
  virtual _connection_base2<arg1_type, arg2_type, mt_policy>* clone() = 0;
  virtual _connection_base2<arg1_type, arg2_type, mt_policy>* duplicate(
      has_slots_interface* pnewdest) = 0;
};

template <class arg1_type, class arg2_type, class arg3_type, class mt_policy>
class _connection_base3 {
 public:
  virtual ~_connection_base3() {}
  virtual has_slots_interface* getdest() const = 0;
  virtual void emit(arg1_type, arg2_type, arg3_type) = 0;
  virtual _connection_base3<arg1_type, arg2_type, arg3_type, mt_policy>*
  clone() = 0;
  virtual _connection_base3<arg1_type, arg2_type, arg3_type, mt_policy>*
  duplicate(has_slots_interface* pnewdest) = 0;
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class mt_policy>
class _connection_base4 {
 public:
  virtual ~_connection_base4() {}
  virtual has_slots_interface* getdest() const = 0;
  virtual void emit(arg1_type, arg2_type, arg3_type, arg4_type) = 0;
  virtual _connection_base4<arg1_type, arg2_type, arg3_type, arg4_type,
                            mt_policy>*
  clone() = 0;
  virtual _connection_base4<arg1_type, arg2_type, arg3_type, arg4_type,
                            mt_policy>*
  duplicate(has_slots_interface* pnewdest) = 0;
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class mt_policy>
class _connection_base5 {
 public:
  virtual ~_connection_base5() {}
  virtual has_slots_interface* getdest() const = 0;
  virtual void emit(arg1_type, arg2_type, arg3_type, arg4_type, arg5_type) = 0;
  virtual _connection_base5<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, mt_policy>*
  clone() = 0;
  virtual _connection_base5<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, mt_policy>*
  duplicate(has_slots_interface* pnewdest) = 0;
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class arg6_type, class mt_policy>
class _connection_base6 {
 public:
  virtual ~_connection_base6() {}
  virtual has_slots_interface* getdest() const = 0;
  virtual void emit(arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                    arg6_type) = 0;
  virtual _connection_base6<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, mt_policy>*
  clone() = 0;
  virtual _connection_base6<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, mt_policy>*
  duplicate(has_slots_interface* pnewdest) = 0;
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class arg6_type, class arg7_type, class mt_policy>
class _connection_base7 {
 public:
  virtual ~_connection_base7() {}
  virtual has_slots_interface* getdest() const = 0;
  virtual void emit(arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                    arg6_type, arg7_type) = 0;
  virtual _connection_base7<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, arg7_type, mt_policy>*
  clone() = 0;
  virtual _connection_base7<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, arg7_type, mt_policy>*
  duplicate(has_slots_interface* pnewdest) = 0;
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class arg6_type, class arg7_type, class arg8_type,
          class mt_policy>
class _connection_base8 {
 public:
  virtual ~_connection_base8() {}
  virtual has_slots_interface* getdest() const = 0;
  virtual void emit(arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                    arg6_type, arg7_type, arg8_type) = 0;
  virtual _connection_base8<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, arg7_type, arg8_type,
                            mt_policy>*
  clone() = 0;
  virtual _connection_base8<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, arg7_type, arg8_type,
                            mt_policy>*
  duplicate(has_slots_interface* pnewdest) = 0;
};

class _signal_base_interface {
 public:
  virtual void slot_disconnect(has_slots_interface* pslot) = 0;
  virtual void slot_duplicate(const has_slots_interface* poldslot,
                              has_slots_interface* pnewslot) = 0;
};

template <class mt_policy>
class _signal_base : public _signal_base_interface, public mt_policy {};

class has_slots_interface {
 public:
  has_slots_interface() { ; }

  virtual void signal_connect(_signal_base_interface* sender) = 0;

  virtual void signal_disconnect(_signal_base_interface* sender) = 0;

  virtual ~has_slots_interface() {}

  virtual void disconnect_all() = 0;
};

template <class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class has_slots : public has_slots_interface, public mt_policy {
 private:
  typedef std::set<_signal_base_interface*> sender_set;
  typedef sender_set::const_iterator const_iterator;

 public:
  has_slots() { ; }

  has_slots(const has_slots& hs) {
    lock_block<mt_policy> lock(this);
    const_iterator it = hs.m_senders.begin();
    const_iterator itEnd = hs.m_senders.end();

    while (it != itEnd) {
      (*it)->slot_duplicate(&hs, this);
      m_senders.insert(*it);
      ++it;
    }
  }

  void signal_connect(_signal_base_interface* sender) override {
    lock_block<mt_policy> lock(this);
    m_senders.insert(sender);
  }

  void signal_disconnect(_signal_base_interface* sender) override {
    lock_block<mt_policy> lock(this);
    m_senders.erase(sender);
  }

  virtual ~has_slots() { disconnect_all(); }

  void disconnect_all() override {
    lock_block<mt_policy> lock(this);
    const_iterator it = m_senders.begin();
    const_iterator itEnd = m_senders.end();

    while (it != itEnd) {
      (*it)->slot_disconnect(this);
      ++it;
    }

    m_senders.erase(m_senders.begin(), m_senders.end());
  }

 private:
  sender_set m_senders;
};

template <class mt_policy>
class _signal_base0 : public _signal_base<mt_policy> {
 public:
  typedef std::list<_connection_base0<mt_policy>*> connections_list;

  _signal_base0() { ; }

  _signal_base0(const _signal_base0& s) : _signal_base<mt_policy>(s) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = s.m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = s.m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_connect(this);
      m_connected_slots.push_back((*it)->clone());

      ++it;
    }
  }

  ~_signal_base0() { disconnect_all(); }

  bool is_empty() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    return it == itEnd;
  }

  void disconnect_all() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_disconnect(this);
      delete *it;

      ++it;
    }

    m_connected_slots.erase(m_connected_slots.begin(), m_connected_slots.end());
  }

#ifdef _DEBUG
  bool connected(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    while (it != itEnd) {
      itNext = it;
      ++itNext;
      if ((*it)->getdest() == pclass) return true;
      it = itNext;
    }
    return false;
  }
#endif

  void disconnect(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == pclass) {
        delete *it;
        m_connected_slots.erase(it);
        pclass->signal_disconnect(this);
        return;
      }

      ++it;
    }
  }

  void slot_disconnect(has_slots_interface* pslot) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      typename connections_list::iterator itNext = it;
      ++itNext;

      if ((*it)->getdest() == pslot) {
        delete *it;
        m_connected_slots.erase(it);
      }

      it = itNext;
    }
  }

  void slot_duplicate(const has_slots_interface* oldtarget,
                      has_slots_interface* newtarget) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == oldtarget) {
        m_connected_slots.push_back((*it)->duplicate(newtarget));
      }

      ++it;
    }
  }

 protected:
  connections_list m_connected_slots;
};

template <class arg1_type, class mt_policy>
class _signal_base1 : public _signal_base<mt_policy> {
 public:
  typedef std::list<_connection_base1<arg1_type, mt_policy>*> connections_list;

  _signal_base1() { ; }

  _signal_base1(const _signal_base1<arg1_type, mt_policy>& s)
      : _signal_base<mt_policy>(s) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = s.m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = s.m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_connect(this);
      m_connected_slots.push_back((*it)->clone());

      ++it;
    }
  }

  void slot_duplicate(const has_slots_interface* oldtarget,
                      has_slots_interface* newtarget) override {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == oldtarget) {
        m_connected_slots.push_back((*it)->duplicate(newtarget));
      }

      ++it;
    }
  }

  ~_signal_base1() { disconnect_all(); }

  bool is_empty() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    return it == itEnd;
  }

  void disconnect_all() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_disconnect(this);
      delete *it;

      ++it;
    }

    m_connected_slots.erase(m_connected_slots.begin(), m_connected_slots.end());
  }

#ifdef _DEBUG
  bool connected(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    while (it != itEnd) {
      itNext = it;
      ++itNext;
      if ((*it)->getdest() == pclass) return true;
      it = itNext;
    }
    return false;
  }
#endif

  void disconnect(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == pclass) {
        delete *it;
        m_connected_slots.erase(it);
        pclass->signal_disconnect(this);
        return;
      }

      ++it;
    }
  }

  void slot_disconnect(has_slots_interface* pslot) override {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      typename connections_list::iterator itNext = it;
      ++itNext;

      if ((*it)->getdest() == pslot) {
        delete *it;
        m_connected_slots.erase(it);
      }

      it = itNext;
    }
  }

 protected:
  connections_list m_connected_slots;
};

template <class arg1_type, class arg2_type, class mt_policy>
class _signal_base2 : public _signal_base<mt_policy> {
 public:
  typedef std::list<_connection_base2<arg1_type, arg2_type, mt_policy>*>
      connections_list;

  _signal_base2() { ; }

  _signal_base2(const _signal_base2<arg1_type, arg2_type, mt_policy>& s)
      : _signal_base<mt_policy>(s) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = s.m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = s.m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_connect(this);
      m_connected_slots.push_back((*it)->clone());

      ++it;
    }
  }

  void slot_duplicate(const has_slots_interface* oldtarget,
                      has_slots_interface* newtarget) override {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == oldtarget) {
        m_connected_slots.push_back((*it)->duplicate(newtarget));
      }

      ++it;
    }
  }

  ~_signal_base2() { disconnect_all(); }

  bool is_empty() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    return it == itEnd;
  }

  void disconnect_all() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_disconnect(this);
      delete *it;

      ++it;
    }

    m_connected_slots.erase(m_connected_slots.begin(), m_connected_slots.end());
  }

#ifdef _DEBUG
  bool connected(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    while (it != itEnd) {
      itNext = it;
      ++itNext;
      if ((*it)->getdest() == pclass) return true;
      it = itNext;
    }
    return false;
  }
#endif

  void disconnect(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == pclass) {
        delete *it;
        m_connected_slots.erase(it);
        pclass->signal_disconnect(this);
        return;
      }

      ++it;
    }
  }

  void slot_disconnect(has_slots_interface* pslot) override {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      typename connections_list::iterator itNext = it;
      ++itNext;

      if ((*it)->getdest() == pslot) {
        delete *it;
        m_connected_slots.erase(it);
      }

      it = itNext;
    }
  }

 protected:
  connections_list m_connected_slots;
};

template <class arg1_type, class arg2_type, class arg3_type, class mt_policy>
class _signal_base3 : public _signal_base<mt_policy> {
 public:
  typedef std::list<
      _connection_base3<arg1_type, arg2_type, arg3_type, mt_policy>*>
      connections_list;

  _signal_base3() { ; }

  _signal_base3(
      const _signal_base3<arg1_type, arg2_type, arg3_type, mt_policy>& s)
      : _signal_base<mt_policy>(s) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = s.m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = s.m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_connect(this);
      m_connected_slots.push_back((*it)->clone());

      ++it;
    }
  }

  void slot_duplicate(const has_slots_interface* oldtarget,
                      has_slots_interface* newtarget) override {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == oldtarget) {
        m_connected_slots.push_back((*it)->duplicate(newtarget));
      }

      ++it;
    }
  }

  ~_signal_base3() { disconnect_all(); }

  bool is_empty() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    return it == itEnd;
  }

  void disconnect_all() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_disconnect(this);
      delete *it;

      ++it;
    }

    m_connected_slots.erase(m_connected_slots.begin(), m_connected_slots.end());
  }

#ifdef _DEBUG
  bool connected(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    while (it != itEnd) {
      itNext = it;
      ++itNext;
      if ((*it)->getdest() == pclass) return true;
      it = itNext;
    }
    return false;
  }
#endif

  void disconnect(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == pclass) {
        delete *it;
        m_connected_slots.erase(it);
        pclass->signal_disconnect(this);
        return;
      }

      ++it;
    }
  }

  void slot_disconnect(has_slots_interface* pslot) override {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      typename connections_list::iterator itNext = it;
      ++itNext;

      if ((*it)->getdest() == pslot) {
        delete *it;
        m_connected_slots.erase(it);
      }

      it = itNext;
    }
  }

 protected:
  connections_list m_connected_slots;
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class mt_policy>
class _signal_base4 : public _signal_base<mt_policy> {
 public:
  typedef std::list<
      _connection_base4<arg1_type, arg2_type, arg3_type, arg4_type, mt_policy>*>
      connections_list;

  _signal_base4() { ; }

  _signal_base4(const _signal_base4<arg1_type, arg2_type, arg3_type, arg4_type,
                                    mt_policy>& s)
      : _signal_base<mt_policy>(s) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = s.m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = s.m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_connect(this);
      m_connected_slots.push_back((*it)->clone());

      ++it;
    }
  }

  void slot_duplicate(const has_slots_interface* oldtarget,
                      has_slots_interface* newtarget) override {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == oldtarget) {
        m_connected_slots.push_back((*it)->duplicate(newtarget));
      }

      ++it;
    }
  }

  ~_signal_base4() { disconnect_all(); }

  bool is_empty() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    return it == itEnd;
  }

  void disconnect_all() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_disconnect(this);
      delete *it;

      ++it;
    }

    m_connected_slots.erase(m_connected_slots.begin(), m_connected_slots.end());
  }

#ifdef _DEBUG
  bool connected(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    while (it != itEnd) {
      itNext = it;
      ++itNext;
      if ((*it)->getdest() == pclass) return true;
      it = itNext;
    }
    return false;
  }
#endif

  void disconnect(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == pclass) {
        delete *it;
        m_connected_slots.erase(it);
        pclass->signal_disconnect(this);
        return;
      }

      ++it;
    }
  }

  void slot_disconnect(has_slots_interface* pslot) override {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      typename connections_list::iterator itNext = it;
      ++itNext;

      if ((*it)->getdest() == pslot) {
        delete *it;
        m_connected_slots.erase(it);
      }

      it = itNext;
    }
  }

 protected:
  connections_list m_connected_slots;
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class mt_policy>
class _signal_base5 : public _signal_base<mt_policy> {
 public:
  typedef std::list<_connection_base5<arg1_type, arg2_type, arg3_type,
                                      arg4_type, arg5_type, mt_policy>*>
      connections_list;

  _signal_base5() { ; }

  _signal_base5(const _signal_base5<arg1_type, arg2_type, arg3_type, arg4_type,
                                    arg5_type, mt_policy>& s)
      : _signal_base<mt_policy>(s) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = s.m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = s.m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_connect(this);
      m_connected_slots.push_back((*it)->clone());

      ++it;
    }
  }

  void slot_duplicate(const has_slots_interface* oldtarget,
                      has_slots_interface* newtarget) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == oldtarget) {
        m_connected_slots.push_back((*it)->duplicate(newtarget));
      }

      ++it;
    }
  }

  ~_signal_base5() { disconnect_all(); }

  bool is_empty() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    return it == itEnd;
  }

  void disconnect_all() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_disconnect(this);
      delete *it;

      ++it;
    }

    m_connected_slots.erase(m_connected_slots.begin(), m_connected_slots.end());
  }

#ifdef _DEBUG
  bool connected(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    while (it != itEnd) {
      itNext = it;
      ++itNext;
      if ((*it)->getdest() == pclass) return true;
      it = itNext;
    }
    return false;
  }
#endif

  void disconnect(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == pclass) {
        delete *it;
        m_connected_slots.erase(it);
        pclass->signal_disconnect(this);
        return;
      }

      ++it;
    }
  }

  void slot_disconnect(has_slots_interface* pslot) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      typename connections_list::iterator itNext = it;
      ++itNext;

      if ((*it)->getdest() == pslot) {
        delete *it;
        m_connected_slots.erase(it);
      }

      it = itNext;
    }
  }

 protected:
  connections_list m_connected_slots;
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class arg6_type, class mt_policy>
class _signal_base6 : public _signal_base<mt_policy> {
 public:
  typedef std::list<
      _connection_base6<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        arg6_type, mt_policy>*>
      connections_list;

  _signal_base6() { ; }

  _signal_base6(const _signal_base6<arg1_type, arg2_type, arg3_type, arg4_type,
                                    arg5_type, arg6_type, mt_policy>& s)
      : _signal_base<mt_policy>(s) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = s.m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = s.m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_connect(this);
      m_connected_slots.push_back((*it)->clone());

      ++it;
    }
  }

  void slot_duplicate(const has_slots_interface* oldtarget,
                      has_slots_interface* newtarget) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == oldtarget) {
        m_connected_slots.push_back((*it)->duplicate(newtarget));
      }

      ++it;
    }
  }

  ~_signal_base6() { disconnect_all(); }

  bool is_empty() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    return it == itEnd;
  }

  void disconnect_all() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_disconnect(this);
      delete *it;

      ++it;
    }

    m_connected_slots.erase(m_connected_slots.begin(), m_connected_slots.end());
  }

#ifdef _DEBUG
  bool connected(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    while (it != itEnd) {
      itNext = it;
      ++itNext;
      if ((*it)->getdest() == pclass) return true;
      it = itNext;
    }
    return false;
  }
#endif

  void disconnect(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == pclass) {
        delete *it;
        m_connected_slots.erase(it);
        pclass->signal_disconnect(this);
        return;
      }

      ++it;
    }
  }

  void slot_disconnect(has_slots_interface* pslot) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      typename connections_list::iterator itNext = it;
      ++itNext;

      if ((*it)->getdest() == pslot) {
        delete *it;
        m_connected_slots.erase(it);
      }

      it = itNext;
    }
  }

 protected:
  connections_list m_connected_slots;
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class arg6_type, class arg7_type, class mt_policy>
class _signal_base7 : public _signal_base<mt_policy> {
 public:
  typedef std::list<
      _connection_base7<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        arg6_type, arg7_type, mt_policy>*>
      connections_list;

  _signal_base7() { ; }

  _signal_base7(
      const _signal_base7<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                          arg6_type, arg7_type, mt_policy>& s)
      : _signal_base<mt_policy>(s) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = s.m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = s.m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_connect(this);
      m_connected_slots.push_back((*it)->clone());

      ++it;
    }
  }

  void slot_duplicate(const has_slots_interface* oldtarget,
                      has_slots_interface* newtarget) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == oldtarget) {
        m_connected_slots.push_back((*it)->duplicate(newtarget));
      }

      ++it;
    }
  }

  ~_signal_base7() { disconnect_all(); }

  bool is_empty() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    return it == itEnd;
  }

  void disconnect_all() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_disconnect(this);
      delete *it;

      ++it;
    }

    m_connected_slots.erase(m_connected_slots.begin(), m_connected_slots.end());
  }

#ifdef _DEBUG
  bool connected(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    while (it != itEnd) {
      itNext = it;
      ++itNext;
      if ((*it)->getdest() == pclass) return true;
      it = itNext;
    }
    return false;
  }
#endif

  void disconnect(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == pclass) {
        delete *it;
        m_connected_slots.erase(it);
        pclass->signal_disconnect(this);
        return;
      }

      ++it;
    }
  }

  void slot_disconnect(has_slots_interface* pslot) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      typename connections_list::iterator itNext = it;
      ++itNext;

      if ((*it)->getdest() == pslot) {
        delete *it;
        m_connected_slots.erase(it);
      }

      it = itNext;
    }
  }

 protected:
  connections_list m_connected_slots;
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class arg6_type, class arg7_type, class arg8_type,
          class mt_policy>
class _signal_base8 : public _signal_base<mt_policy> {
 public:
  typedef std::list<
      _connection_base8<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        arg6_type, arg7_type, arg8_type, mt_policy>*>
      connections_list;

  _signal_base8() { ; }

  _signal_base8(
      const _signal_base8<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                          arg6_type, arg7_type, arg8_type, mt_policy>& s)
      : _signal_base<mt_policy>(s) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = s.m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = s.m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_connect(this);
      m_connected_slots.push_back((*it)->clone());

      ++it;
    }
  }

  void slot_duplicate(const has_slots_interface* oldtarget,
                      has_slots_interface* newtarget) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == oldtarget) {
        m_connected_slots.push_back((*it)->duplicate(newtarget));
      }

      ++it;
    }
  }

  ~_signal_base8() { disconnect_all(); }

  bool is_empty() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    return it == itEnd;
  }

  void disconnect_all() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      (*it)->getdest()->signal_disconnect(this);
      delete *it;

      ++it;
    }

    m_connected_slots.erase(m_connected_slots.begin(), m_connected_slots.end());
  }

#ifdef _DEBUG
  bool connected(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();
    while (it != itEnd) {
      itNext = it;
      ++itNext;
      if ((*it)->getdest() == pclass) return true;
      it = itNext;
    }
    return false;
  }
#endif

  void disconnect(has_slots_interface* pclass) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      if ((*it)->getdest() == pclass) {
        delete *it;
        m_connected_slots.erase(it);
        pclass->signal_disconnect(this);
        return;
      }

      ++it;
    }
  }

  void slot_disconnect(has_slots_interface* pslot) {
    lock_block<mt_policy> lock(this);
    typename connections_list::iterator it = m_connected_slots.begin();
    typename connections_list::iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      typename connections_list::iterator itNext = it;
      ++itNext;

      if ((*it)->getdest() == pslot) {
        delete *it;
        m_connected_slots.erase(it);
      }

      it = itNext;
    }
  }

 protected:
  connections_list m_connected_slots;
};

template <class dest_type, class mt_policy>
class _connection0 : public _connection_base0<mt_policy> {
 public:
  _connection0() {
    m_pobject = NULL;
    m_pmemfun = NULL;
  }

  _connection0(dest_type* pobject, void (dest_type::*pmemfun)()) {
    m_pobject = pobject;
    m_pmemfun = pmemfun;
  }

  virtual ~_connection0() {}

  virtual _connection_base0<mt_policy>* clone() {
    return new _connection0<dest_type, mt_policy>(*this);
  }

  virtual _connection_base0<mt_policy>* duplicate(
      has_slots_interface* pnewdest) {
    return new _connection0<dest_type, mt_policy>((dest_type*)pnewdest,
                                                  m_pmemfun);
  }

  virtual void emit() { (m_pobject->*m_pmemfun)(); }

  virtual has_slots_interface* getdest() const { return m_pobject; }

 private:
  dest_type* m_pobject;
  void (dest_type::*m_pmemfun)();
};

template <class dest_type, class arg1_type, class mt_policy>
class _connection1 : public _connection_base1<arg1_type, mt_policy> {
 public:
  _connection1() {
    m_pobject = NULL;
    m_pmemfun = NULL;
  }

  _connection1(dest_type* pobject, void (dest_type::*pmemfun)(arg1_type)) {
    m_pobject = pobject;
    m_pmemfun = pmemfun;
  }

  virtual ~_connection1() {}

  virtual _connection_base1<arg1_type, mt_policy>* clone() override {
    return new _connection1<dest_type, arg1_type, mt_policy>(*this);
  }

  virtual _connection_base1<arg1_type, mt_policy>* duplicate(
      has_slots_interface* pnewdest) override {
    return new _connection1<dest_type, arg1_type, mt_policy>(
        (dest_type*)pnewdest, m_pmemfun);
  }

  virtual void emit(arg1_type a1) override { (m_pobject->*m_pmemfun)(a1); }

  virtual has_slots_interface* getdest() const override { return m_pobject; }

 private:
  dest_type* m_pobject;
  void (dest_type::*m_pmemfun)(arg1_type);
};

template <class dest_type, class arg1_type, class arg2_type, class mt_policy>
class _connection2 : public _connection_base2<arg1_type, arg2_type, mt_policy> {
 public:
  _connection2() {
    m_pobject = NULL;
    m_pmemfun = NULL;
  }

  _connection2(dest_type* pobject,
               void (dest_type::*pmemfun)(arg1_type, arg2_type)) {
    m_pobject = pobject;
    m_pmemfun = pmemfun;
  }

  virtual ~_connection2() {}

  virtual _connection_base2<arg1_type, arg2_type, mt_policy>* clone() override {
    return new _connection2<dest_type, arg1_type, arg2_type, mt_policy>(*this);
  }

  virtual _connection_base2<arg1_type, arg2_type, mt_policy>* duplicate(
      has_slots_interface* pnewdest) override {
    return new _connection2<dest_type, arg1_type, arg2_type, mt_policy>(
        (dest_type*)pnewdest, m_pmemfun);
  }

  virtual void emit(arg1_type a1, arg2_type a2) override {
    (m_pobject->*m_pmemfun)(a1, a2);
  }

  virtual has_slots_interface* getdest() const override { return m_pobject; }

 private:
  dest_type* m_pobject;
  void (dest_type::*m_pmemfun)(arg1_type, arg2_type);
};

template <class dest_type, class arg1_type, class arg2_type, class arg3_type,
          class mt_policy>
class _connection3
    : public _connection_base3<arg1_type, arg2_type, arg3_type, mt_policy> {
 public:
  _connection3() {
    m_pobject = NULL;
    m_pmemfun = NULL;
  }

  _connection3(dest_type* pobject,
               void (dest_type::*pmemfun)(arg1_type, arg2_type, arg3_type)) {
    m_pobject = pobject;
    m_pmemfun = pmemfun;
  }

  virtual ~_connection3() {}

  virtual _connection_base3<arg1_type, arg2_type, arg3_type, mt_policy>* clone()
      override {
    return new _connection3<dest_type, arg1_type, arg2_type, arg3_type,
                            mt_policy>(*this);
  }

  virtual _connection_base3<arg1_type, arg2_type, arg3_type, mt_policy>*
  duplicate(has_slots_interface* pnewdest) override {
    return new _connection3<dest_type, arg1_type, arg2_type, arg3_type,
                            mt_policy>((dest_type*)pnewdest, m_pmemfun);
  }

  virtual void emit(arg1_type a1, arg2_type a2, arg3_type a3) override {
    (m_pobject->*m_pmemfun)(a1, a2, a3);
  }

  virtual has_slots_interface* getdest() const override { return m_pobject; }

 private:
  dest_type* m_pobject;
  void (dest_type::*m_pmemfun)(arg1_type, arg2_type, arg3_type);
};

template <class dest_type, class arg1_type, class arg2_type, class arg3_type,
          class arg4_type, class mt_policy>
class _connection4 : public _connection_base4<arg1_type, arg2_type, arg3_type,
                                              arg4_type, mt_policy> {
 public:
  _connection4() {
    m_pobject = NULL;
    m_pmemfun = NULL;
  }

  _connection4(dest_type* pobject,
               void (dest_type::*pmemfun)(arg1_type, arg2_type, arg3_type,
                                          arg4_type)) {
    m_pobject = pobject;
    m_pmemfun = pmemfun;
  }

  virtual ~_connection4() {}

  virtual _connection_base4<arg1_type, arg2_type, arg3_type, arg4_type,
                            mt_policy>*
  clone() override {
    return new _connection4<dest_type, arg1_type, arg2_type, arg3_type,
                            arg4_type, mt_policy>(*this);
  }

  virtual _connection_base4<arg1_type, arg2_type, arg3_type, arg4_type,
                            mt_policy>*
  duplicate(has_slots_interface* pnewdest) override {
    return new _connection4<dest_type, arg1_type, arg2_type, arg3_type,
                            arg4_type, mt_policy>((dest_type*)pnewdest,
                                                  m_pmemfun);
  }

  virtual void emit(arg1_type a1, arg2_type a2, arg3_type a3,
                    arg4_type a4) override {
    (m_pobject->*m_pmemfun)(a1, a2, a3, a4);
  }

  virtual has_slots_interface* getdest() const override { return m_pobject; }

 private:
  dest_type* m_pobject;
  void (dest_type::*m_pmemfun)(arg1_type, arg2_type, arg3_type, arg4_type);
};

template <class dest_type, class arg1_type, class arg2_type, class arg3_type,
          class arg4_type, class arg5_type, class mt_policy>
class _connection5 : public _connection_base5<arg1_type, arg2_type, arg3_type,
                                              arg4_type, arg5_type, mt_policy> {
 public:
  _connection5() {
    m_pobject = NULL;
    m_pmemfun = NULL;
  }

  _connection5(dest_type* pobject,
               void (dest_type::*pmemfun)(arg1_type, arg2_type, arg3_type,
                                          arg4_type, arg5_type)) {
    m_pobject = pobject;
    m_pmemfun = pmemfun;
  }

  virtual ~_connection5() {}

  virtual _connection_base5<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, mt_policy>*
  clone() {
    return new _connection5<dest_type, arg1_type, arg2_type, arg3_type,
                            arg4_type, arg5_type, mt_policy>(*this);
  }

  virtual _connection_base5<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, mt_policy>*
  duplicate(has_slots_interface* pnewdest) {
    return new _connection5<dest_type, arg1_type, arg2_type, arg3_type,
                            arg4_type, arg5_type, mt_policy>(
        (dest_type*)pnewdest, m_pmemfun);
  }

  virtual void emit(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
                    arg5_type a5) {
    (m_pobject->*m_pmemfun)(a1, a2, a3, a4, a5);
  }

  virtual has_slots_interface* getdest() const { return m_pobject; }

 private:
  dest_type* m_pobject;
  void (dest_type::*m_pmemfun)(arg1_type, arg2_type, arg3_type, arg4_type,
                               arg5_type);
};

template <class dest_type, class arg1_type, class arg2_type, class arg3_type,
          class arg4_type, class arg5_type, class arg6_type, class mt_policy>
class _connection6
    : public _connection_base6<arg1_type, arg2_type, arg3_type, arg4_type,
                               arg5_type, arg6_type, mt_policy> {
 public:
  _connection6() {
    m_pobject = NULL;
    m_pmemfun = NULL;
  }

  _connection6(dest_type* pobject,
               void (dest_type::*pmemfun)(arg1_type, arg2_type, arg3_type,
                                          arg4_type, arg5_type, arg6_type)) {
    m_pobject = pobject;
    m_pmemfun = pmemfun;
  }

  virtual ~_connection6() {}

  virtual _connection_base6<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, mt_policy>*
  clone() {
    return new _connection6<dest_type, arg1_type, arg2_type, arg3_type,
                            arg4_type, arg5_type, arg6_type, mt_policy>(*this);
  }

  virtual _connection_base6<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, mt_policy>*
  duplicate(has_slots_interface* pnewdest) {
    return new _connection6<dest_type, arg1_type, arg2_type, arg3_type,
                            arg4_type, arg5_type, arg6_type, mt_policy>(
        (dest_type*)pnewdest, m_pmemfun);
  }

  virtual void emit(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
                    arg5_type a5, arg6_type a6) {
    (m_pobject->*m_pmemfun)(a1, a2, a3, a4, a5, a6);
  }

  virtual has_slots_interface* getdest() const { return m_pobject; }

 private:
  dest_type* m_pobject;
  void (dest_type::*m_pmemfun)(arg1_type, arg2_type, arg3_type, arg4_type,
                               arg5_type, arg6_type);
};

template <class dest_type, class arg1_type, class arg2_type, class arg3_type,
          class arg4_type, class arg5_type, class arg6_type, class arg7_type,
          class mt_policy>
class _connection7
    : public _connection_base7<arg1_type, arg2_type, arg3_type, arg4_type,
                               arg5_type, arg6_type, arg7_type, mt_policy> {
 public:
  _connection7() {
    m_pobject = NULL;
    m_pmemfun = NULL;
  }

  _connection7(dest_type* pobject,
               void (dest_type::*pmemfun)(arg1_type, arg2_type, arg3_type,
                                          arg4_type, arg5_type, arg6_type,
                                          arg7_type)) {
    m_pobject = pobject;
    m_pmemfun = pmemfun;
  }

  virtual ~_connection7() {}

  virtual _connection_base7<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, arg7_type, mt_policy>*
  clone() {
    return new _connection7<dest_type, arg1_type, arg2_type, arg3_type,
                            arg4_type, arg5_type, arg6_type, arg7_type,
                            mt_policy>(*this);
  }

  virtual _connection_base7<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, arg7_type, mt_policy>*
  duplicate(has_slots_interface* pnewdest) {
    return new _connection7<dest_type, arg1_type, arg2_type, arg3_type,
                            arg4_type, arg5_type, arg6_type, arg7_type,
                            mt_policy>((dest_type*)pnewdest, m_pmemfun);
  }

  virtual void emit(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
                    arg5_type a5, arg6_type a6, arg7_type a7) {
    (m_pobject->*m_pmemfun)(a1, a2, a3, a4, a5, a6, a7);
  }

  virtual has_slots_interface* getdest() const { return m_pobject; }

 private:
  dest_type* m_pobject;
  void (dest_type::*m_pmemfun)(arg1_type, arg2_type, arg3_type, arg4_type,
                               arg5_type, arg6_type, arg7_type);
};

template <class dest_type, class arg1_type, class arg2_type, class arg3_type,
          class arg4_type, class arg5_type, class arg6_type, class arg7_type,
          class arg8_type, class mt_policy>
class _connection8 : public _connection_base8<arg1_type, arg2_type, arg3_type,
                                              arg4_type, arg5_type, arg6_type,
                                              arg7_type, arg8_type, mt_policy> {
 public:
  _connection8() {
    m_pobject = NULL;
    m_pmemfun = NULL;
  }

  _connection8(dest_type* pobject,
               void (dest_type::*pmemfun)(arg1_type, arg2_type, arg3_type,
                                          arg4_type, arg5_type, arg6_type,
                                          arg7_type, arg8_type)) {
    m_pobject = pobject;
    m_pmemfun = pmemfun;
  }

  virtual ~_connection8() {}

  virtual _connection_base8<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, arg7_type, arg8_type,
                            mt_policy>*
  clone() {
    return new _connection8<dest_type, arg1_type, arg2_type, arg3_type,
                            arg4_type, arg5_type, arg6_type, arg7_type,
                            arg8_type, mt_policy>(*this);
  }

  virtual _connection_base8<arg1_type, arg2_type, arg3_type, arg4_type,
                            arg5_type, arg6_type, arg7_type, arg8_type,
                            mt_policy>*
  duplicate(has_slots_interface* pnewdest) {
    return new _connection8<dest_type, arg1_type, arg2_type, arg3_type,
                            arg4_type, arg5_type, arg6_type, arg7_type,
                            arg8_type, mt_policy>((dest_type*)pnewdest,
                                                  m_pmemfun);
  }

  virtual void emit(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
                    arg5_type a5, arg6_type a6, arg7_type a7, arg8_type a8) {
    (m_pobject->*m_pmemfun)(a1, a2, a3, a4, a5, a6, a7, a8);
  }

  virtual has_slots_interface* getdest() const { return m_pobject; }

 private:
  dest_type* m_pobject;
  void (dest_type::*m_pmemfun)(arg1_type, arg2_type, arg3_type, arg4_type,
                               arg5_type, arg6_type, arg7_type, arg8_type);
};

template <class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class signal0 : public _signal_base0<mt_policy> {
 public:
  typedef _signal_base0<mt_policy> base;
  typedef typename base::connections_list connections_list;
  using base::m_connected_slots;

  signal0() { ; }

  signal0(const signal0<mt_policy>& s) : _signal_base0<mt_policy>(s) { ; }

  template <class desttype>
  void connect(desttype* pclass, void (desttype::*pmemfun)()) {
    lock_block<mt_policy> lock(this);
    _connection0<desttype, mt_policy>* conn =
        new _connection0<desttype, mt_policy>(pclass, pmemfun);
    m_connected_slots.push_back(conn);
    pclass->signal_connect(this);
  }

  void emit() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit();

      it = itNext;
    }
  }

  void operator()() {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit();

      it = itNext;
    }
  }
};

template <class arg1_type, class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class signal1 : public _signal_base1<arg1_type, mt_policy> {
 public:
  typedef _signal_base1<arg1_type, mt_policy> base;
  typedef typename base::connections_list connections_list;
  using base::m_connected_slots;

  signal1() { ; }

  signal1(const signal1<arg1_type, mt_policy>& s)
      : _signal_base1<arg1_type, mt_policy>(s) {
    ;
  }

  template <class desttype>
  void connect(desttype* pclass, void (desttype::*pmemfun)(arg1_type)) {
    lock_block<mt_policy> lock(this);
    _connection1<desttype, arg1_type, mt_policy>* conn =
        new _connection1<desttype, arg1_type, mt_policy>(pclass, pmemfun);
    m_connected_slots.push_back(conn);
    pclass->signal_connect(this);
  }

  void emit(arg1_type a1) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1);

      it = itNext;
    }
  }

  void operator()(arg1_type a1) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1);

      it = itNext;
    }
  }
};

template <class arg1_type, class arg2_type,
          class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class signal2 : public _signal_base2<arg1_type, arg2_type, mt_policy> {
 public:
  typedef _signal_base2<arg1_type, arg2_type, mt_policy> base;
  typedef typename base::connections_list connections_list;
  using base::m_connected_slots;

  signal2() { ; }

  signal2(const signal2<arg1_type, arg2_type, mt_policy>& s)
      : _signal_base2<arg1_type, arg2_type, mt_policy>(s) {
    ;
  }

  template <class desttype>
  void connect(desttype* pclass,
               void (desttype::*pmemfun)(arg1_type, arg2_type)) {
    lock_block<mt_policy> lock(this);
    _connection2<desttype, arg1_type, arg2_type, mt_policy>* conn =
        new _connection2<desttype, arg1_type, arg2_type, mt_policy>(pclass,
                                                                    pmemfun);
    m_connected_slots.push_back(conn);
    pclass->signal_connect(this);
  }

  void emit(arg1_type a1, arg2_type a2) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2);

      it = itNext;
    }
  }

  void operator()(arg1_type a1, arg2_type a2) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2);

      it = itNext;
    }
  }
};

template <class arg1_type, class arg2_type, class arg3_type,
          class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class signal3
    : public _signal_base3<arg1_type, arg2_type, arg3_type, mt_policy> {
 public:
  typedef _signal_base3<arg1_type, arg2_type, arg3_type, mt_policy> base;
  typedef typename base::connections_list connections_list;
  using base::m_connected_slots;

  signal3() { ; }

  signal3(const signal3<arg1_type, arg2_type, arg3_type, mt_policy>& s)
      : _signal_base3<arg1_type, arg2_type, arg3_type, mt_policy>(s) {
    ;
  }

  template <class desttype>
  void connect(desttype* pclass,
               void (desttype::*pmemfun)(arg1_type, arg2_type, arg3_type)) {
    lock_block<mt_policy> lock(this);
    _connection3<desttype, arg1_type, arg2_type, arg3_type, mt_policy>* conn =
        new _connection3<desttype, arg1_type, arg2_type, arg3_type, mt_policy>(
            pclass, pmemfun);
    m_connected_slots.push_back(conn);
    pclass->signal_connect(this);
  }

  void emit(arg1_type a1, arg2_type a2, arg3_type a3) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3);

      it = itNext;
    }
  }

  void operator()(arg1_type a1, arg2_type a2, arg3_type a3) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3);

      it = itNext;
    }
  }
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class signal4 : public _signal_base4<arg1_type, arg2_type, arg3_type, arg4_type,
                                     mt_policy> {
 public:
  typedef _signal_base4<arg1_type, arg2_type, arg3_type, arg4_type, mt_policy>
      base;
  typedef typename base::connections_list connections_list;
  using base::m_connected_slots;

  signal4() { ; }

  signal4(
      const signal4<arg1_type, arg2_type, arg3_type, arg4_type, mt_policy>& s)
      : _signal_base4<arg1_type, arg2_type, arg3_type, arg4_type, mt_policy>(
            s) {
    ;
  }

  template <class desttype>
  void connect(desttype* pclass,
               void (desttype::*pmemfun)(arg1_type, arg2_type, arg3_type,
                                         arg4_type)) {
    lock_block<mt_policy> lock(this);
    _connection4<desttype, arg1_type, arg2_type, arg3_type, arg4_type,
                 mt_policy>* conn =
        new _connection4<desttype, arg1_type, arg2_type, arg3_type, arg4_type,
                         mt_policy>(pclass, pmemfun);
    m_connected_slots.push_back(conn);
    pclass->signal_connect(this);
  }

  void emit(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3, a4);

      it = itNext;
    }
  }

  void operator()(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3, a4);

      it = itNext;
    }
  }
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class signal5 : public _signal_base5<arg1_type, arg2_type, arg3_type, arg4_type,
                                     arg5_type, mt_policy> {
 public:
  typedef _signal_base5<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        mt_policy>
      base;
  typedef typename base::connections_list connections_list;
  using base::m_connected_slots;

  signal5() { ; }

  signal5(const signal5<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        mt_policy>& s)
      : _signal_base5<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                      mt_policy>(s) {
    ;
  }

  template <class desttype>
  void connect(desttype* pclass,
               void (desttype::*pmemfun)(arg1_type, arg2_type, arg3_type,
                                         arg4_type, arg5_type)) {
    lock_block<mt_policy> lock(this);
    _connection5<desttype, arg1_type, arg2_type, arg3_type, arg4_type,
                 arg5_type, mt_policy>* conn =
        new _connection5<desttype, arg1_type, arg2_type, arg3_type, arg4_type,
                         arg5_type, mt_policy>(pclass, pmemfun);
    m_connected_slots.push_back(conn);
    pclass->signal_connect(this);
  }

  void emit(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
            arg5_type a5) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3, a4, a5);

      it = itNext;
    }
  }

  void operator()(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
                  arg5_type a5) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3, a4, a5);

      it = itNext;
    }
  }
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class arg6_type,
          class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class signal6 : public _signal_base6<arg1_type, arg2_type, arg3_type, arg4_type,
                                     arg5_type, arg6_type, mt_policy> {
 public:
  typedef _signal_base6<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        arg6_type, mt_policy>
      base;
  typedef typename base::connections_list connections_list;
  using base::m_connected_slots;

  signal6() { ; }

  signal6(const signal6<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        arg6_type, mt_policy>& s)
      : _signal_base6<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                      arg6_type, mt_policy>(s) {
    ;
  }

  template <class desttype>
  void connect(desttype* pclass,
               void (desttype::*pmemfun)(arg1_type, arg2_type, arg3_type,
                                         arg4_type, arg5_type, arg6_type)) {
    lock_block<mt_policy> lock(this);
    _connection6<desttype, arg1_type, arg2_type, arg3_type, arg4_type,
                 arg5_type, arg6_type, mt_policy>* conn =
        new _connection6<desttype, arg1_type, arg2_type, arg3_type, arg4_type,
                         arg5_type, arg6_type, mt_policy>(pclass, pmemfun);
    m_connected_slots.push_back(conn);
    pclass->signal_connect(this);
  }

  void emit(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
            arg5_type a5, arg6_type a6) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3, a4, a5, a6);

      it = itNext;
    }
  }

  void operator()(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
                  arg5_type a5, arg6_type a6) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3, a4, a5, a6);

      it = itNext;
    }
  }
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class arg6_type, class arg7_type,
          class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class signal7
    : public _signal_base7<arg1_type, arg2_type, arg3_type, arg4_type,
                           arg5_type, arg6_type, arg7_type, mt_policy> {
 public:
  typedef _signal_base7<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        arg6_type, arg7_type, mt_policy>
      base;
  typedef typename base::connections_list connections_list;
  using base::m_connected_slots;

  signal7() { ; }

  signal7(const signal7<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        arg6_type, arg7_type, mt_policy>& s)
      : _signal_base7<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                      arg6_type, arg7_type, mt_policy>(s) {
    ;
  }

  template <class desttype>
  void connect(desttype* pclass,
               void (desttype::*pmemfun)(arg1_type, arg2_type, arg3_type,
                                         arg4_type, arg5_type, arg6_type,
                                         arg7_type)) {
    lock_block<mt_policy> lock(this);
    _connection7<desttype, arg1_type, arg2_type, arg3_type, arg4_type,
                 arg5_type, arg6_type, arg7_type, mt_policy>* conn =
        new _connection7<desttype, arg1_type, arg2_type, arg3_type, arg4_type,
                         arg5_type, arg6_type, arg7_type, mt_policy>(pclass,
                                                                     pmemfun);
    m_connected_slots.push_back(conn);
    pclass->signal_connect(this);
  }

  void emit(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
            arg5_type a5, arg6_type a6, arg7_type a7) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3, a4, a5, a6, a7);

      it = itNext;
    }
  }

  void operator()(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
                  arg5_type a5, arg6_type a6, arg7_type a7) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3, a4, a5, a6, a7);

      it = itNext;
    }
  }
};

template <class arg1_type, class arg2_type, class arg3_type, class arg4_type,
          class arg5_type, class arg6_type, class arg7_type, class arg8_type,
          class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class signal8 : public _signal_base8<arg1_type, arg2_type, arg3_type, arg4_type,
                                     arg5_type, arg6_type, arg7_type, arg8_type,
                                     mt_policy> {
 public:
  typedef _signal_base8<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        arg6_type, arg7_type, arg8_type, mt_policy>
      base;
  typedef typename base::connections_list connections_list;
  using base::m_connected_slots;

  signal8() { ; }

  signal8(const signal8<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                        arg6_type, arg7_type, arg8_type, mt_policy>& s)
      : _signal_base8<arg1_type, arg2_type, arg3_type, arg4_type, arg5_type,
                      arg6_type, arg7_type, arg8_type, mt_policy>(s) {
    ;
  }

  template <class desttype>
  void connect(desttype* pclass,
               void (desttype::*pmemfun)(arg1_type, arg2_type, arg3_type,
                                         arg4_type, arg5_type, arg6_type,
                                         arg7_type, arg8_type)) {
    lock_block<mt_policy> lock(this);
    _connection8<desttype, arg1_type, arg2_type, arg3_type, arg4_type,
                 arg5_type, arg6_type, arg7_type, arg8_type, mt_policy>* conn =
        new _connection8<desttype, arg1_type, arg2_type, arg3_type, arg4_type,
                         arg5_type, arg6_type, arg7_type, arg8_type, mt_policy>(
            pclass, pmemfun);
    m_connected_slots.push_back(conn);
    pclass->signal_connect(this);
  }

  void emit(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
            arg5_type a5, arg6_type a6, arg7_type a7, arg8_type a8) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3, a4, a5, a6, a7, a8);

      it = itNext;
    }
  }

  void operator()(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4,
                  arg5_type a5, arg6_type a6, arg7_type a7, arg8_type a8) {
    lock_block<mt_policy> lock(this);
    typename connections_list::const_iterator itNext,
        it = m_connected_slots.begin();
    typename connections_list::const_iterator itEnd = m_connected_slots.end();

    while (it != itEnd) {
      itNext = it;
      ++itNext;

      (*it)->emit(a1, a2, a3, a4, a5, a6, a7, a8);

      it = itNext;
    }
  }
};

}  // namespace sigslot

#endif  // TALK_BASE_SIGSLOT_H__