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//
// Copyright 2012 Josh Blum
//
// This program 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 3 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifndef INCLUDED_GNURADIO_SBUFFER_IPP
#define INCLUDED_GNURADIO_SBUFFER_IPP
#include <boost/detail/atomic_count.hpp>
namespace gnuradio
{
struct SBufferImpl
{
SBufferImpl(const SBufferConfig &config):
count(0),
config(config)
{
//NOP
}
boost::detail::atomic_count count;
size_t __pad; //avoid a probably non-issue w/ count
SBufferConfig config;
};
inline void intrusive_ptr_add_ref(SBufferImpl *impl)
{
++impl->count;
}
inline void intrusive_ptr_release(SBufferImpl *impl)
{
if (--impl->count == 0)
{
//call the deleter if possible
boost::shared_ptr<SBufferDeleter> token_deleter = impl->config.token.lock();
if (token_deleter)
{
SBuffer buff;
buff.reset(impl);
(*token_deleter)(buff);
}
else if (impl->config.deleter)
{
SBuffer buff;
buff.reset(impl);
impl->config.deleter(buff);
impl->config.deleter = SBufferDeleter(); //reset deleter, so we dont double delete
}
else
{
delete impl; //its really dead now
}
}
}
inline void *SBuffer::get_actual_memory(void) const
{
return (*this)->config.memory;
}
inline size_t SBuffer::get_actual_length(void) const
{
return (*this)->config.length;
}
inline void *SBuffer::get(const ptrdiff_t delta_bytes) const
{
return ((char *)(*this)->config.memory) + this->offset + delta_bytes;
}
inline Affinity SBuffer::get_affinity(void) const
{
return (*this)->config.affinity;
}
inline bool SBuffer::unique(void) const
{
return (*this)->count == 1;
}
inline size_t SBuffer::use_count(void) const
{
return (*this)->count;
}
} //namespace gnuradio
#endif /*INCLUDED_GNURADIO_SBUFFER_IPP*/
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