f76fc34c29
Updated libsigc++ from 2.0.6 to 2.0.17. git-svn-id: svn://localhost/ardour2/branches/2.1-staging@1413 d708f5d6-7413-0410-9779-e7cbd77b26cf
153 lines
3.4 KiB
C++
153 lines
3.4 KiB
C++
// -*- c++ -*-
|
|
/*
|
|
* Copyright 2003, The libsigc++ Development Team
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
#include <sigc++/signal_base.h>
|
|
|
|
namespace sigc {
|
|
namespace internal {
|
|
|
|
signal_impl::signal_impl()
|
|
: ref_count_(0), exec_count_(0), deferred_(0)
|
|
{}
|
|
|
|
// only MSVC needs this to guarantee that all new/delete are executed from the DLL module
|
|
#ifdef SIGC_NEW_DELETE_IN_LIBRARY_ONLY
|
|
void* signal_impl::operator new(size_t size_)
|
|
{
|
|
return malloc(size_);
|
|
}
|
|
|
|
void signal_impl::operator delete(void* p)
|
|
{
|
|
free(p);
|
|
}
|
|
#endif
|
|
|
|
void signal_impl::clear()
|
|
{
|
|
slots_.clear();
|
|
}
|
|
|
|
signal_impl::size_type signal_impl::size() const
|
|
{
|
|
return slots_.size();
|
|
}
|
|
|
|
signal_impl::iterator_type signal_impl::connect(const slot_base& slot_)
|
|
{
|
|
return insert(slots_.end(), slot_);
|
|
}
|
|
|
|
signal_impl::iterator_type signal_impl::erase(iterator_type i)
|
|
{
|
|
return slots_.erase(i);
|
|
}
|
|
|
|
signal_impl::iterator_type signal_impl::insert(signal_impl::iterator_type i, const slot_base& slot_)
|
|
{
|
|
iterator_type temp = slots_.insert(i, slot_);
|
|
temp->set_parent(this, ¬ify);
|
|
return temp;
|
|
}
|
|
|
|
void signal_impl::sweep()
|
|
{
|
|
deferred_ = false;
|
|
iterator_type i = slots_.begin();
|
|
while (i != slots_.end())
|
|
if ((*i).empty())
|
|
i = slots_.erase(i);
|
|
else
|
|
++i;
|
|
}
|
|
|
|
void* signal_impl::notify(void* d)
|
|
{
|
|
signal_impl* self = reinterpret_cast<signal_impl*>(d);
|
|
if (self->exec_count_ == 0)
|
|
self->sweep();
|
|
else // This is occuring during signal emission.
|
|
self->deferred_ = true; // => sweep() will be called from ~signal_exec().
|
|
return 0; // This is safer because we don't have to care about our iterators in emit().
|
|
}
|
|
|
|
} /* namespace internal */
|
|
|
|
signal_base::signal_base()
|
|
: impl_(0)
|
|
{}
|
|
|
|
signal_base::signal_base(const signal_base& src)
|
|
: trackable(),
|
|
impl_(src.impl())
|
|
{
|
|
impl_->reference();
|
|
}
|
|
|
|
signal_base::~signal_base()
|
|
{
|
|
if (impl_)
|
|
impl_->unreference();
|
|
}
|
|
|
|
void signal_base::clear()
|
|
{
|
|
if (impl_)
|
|
impl_->clear();
|
|
}
|
|
|
|
signal_base::size_type signal_base::size() const
|
|
{
|
|
return (impl_ ? impl_->size() : 0);
|
|
}
|
|
|
|
signal_base::iterator_type signal_base::connect(const slot_base& slot_)
|
|
{
|
|
return impl()->connect(slot_);
|
|
}
|
|
|
|
signal_base::iterator_type signal_base::insert(iterator_type i, const slot_base& slot_)
|
|
{
|
|
return impl()->insert(i, slot_);
|
|
}
|
|
|
|
signal_base::iterator_type signal_base::erase(iterator_type i)
|
|
{
|
|
return impl()->erase(i);
|
|
}
|
|
|
|
signal_base& signal_base::operator = (const signal_base& src)
|
|
{
|
|
if (impl_) impl_->unreference();
|
|
impl_ = src.impl();
|
|
impl_->reference();
|
|
return *this;
|
|
}
|
|
|
|
internal::signal_impl* signal_base::impl() const
|
|
{
|
|
if (!impl_) {
|
|
impl_ = new internal::signal_impl;
|
|
impl_->reference(); // start with a reference count of 1
|
|
}
|
|
return impl_;
|
|
}
|
|
|
|
} /* sigc */
|