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//
// Copyright 2010-2011 Ettus Research LLC
//
// 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 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#ifndef INCLUDED_UHD_TRANSPORT_BOUNDED_BUFFER_HPP
#define INCLUDED_UHD_TRANSPORT_BOUNDED_BUFFER_HPP
#include <uhd/transport/bounded_buffer.ipp> //detail
namespace uhd{ namespace transport{
/*!
* Implement a templated bounded buffer:
* Used for passing elements between threads in a producer-consumer model.
* The bounded buffer implemented waits and timed waits with condition variables.
* The pop operation blocks on the bounded_buffer to become non empty.
* The push operation blocks on the bounded_buffer to become non full.
*/
template <typename elem_type> class bounded_buffer{
public:
/*!
* Create a new bounded buffer object.
* \param capacity the bounded_buffer capacity
*/
bounded_buffer(size_t capacity):
_detail(capacity)
{
/* NOP */
}
/*!
* Push a new element into the bounded buffer immediately.
* The element will not be pushed when the buffer is full.
* \param elem the element reference pop to
* \return false when the buffer is full
*/
UHD_INLINE bool push_with_haste(const elem_type &elem){
return _detail.push_with_haste(elem);
}
/*!
* Push a new element into the bounded buffer.
* If the buffer is full prior to the push,
* make room by poping the oldest element.
* \param elem the new element to push
* \return true if the element fit without popping for space
*/
UHD_INLINE bool push_with_pop_on_full(const elem_type &elem){
return _detail.push_with_pop_on_full(elem);
}
/*!
* Push a new element into the bounded_buffer.
* Wait until the bounded_buffer becomes non-full.
* \param elem the new element to push
*/
UHD_INLINE void push_with_wait(const elem_type &elem){
return _detail.push_with_wait(elem);
}
/*!
* Push a new element into the bounded_buffer.
* Wait until the bounded_buffer becomes non-full or timeout.
* \param elem the new element to push
* \param timeout the timeout in seconds
* \return false when the operation times out
*/
UHD_INLINE bool push_with_timed_wait(const elem_type &elem, double timeout){
return _detail.push_with_timed_wait(elem, timeout);
}
/*!
* Pop an element from the bounded buffer immediately.
* The element will not be popped when the buffer is empty.
* \param elem the element reference pop to
* \return false when the buffer is empty
*/
UHD_INLINE bool pop_with_haste(elem_type &elem){
return _detail.pop_with_haste(elem);
}
/*!
* Pop an element from the bounded_buffer.
* Wait until the bounded_buffer becomes non-empty.
* \param elem the element reference pop to
*/
UHD_INLINE void pop_with_wait(elem_type &elem){
return _detail.pop_with_wait(elem);
}
/*!
* Pop an element from the bounded_buffer.
* Wait until the bounded_buffer becomes non-empty or timeout.
* \param elem the element reference pop to
* \param timeout the timeout in seconds
* \return false when the operation times out
*/
UHD_INLINE bool pop_with_timed_wait(elem_type &elem, double timeout){
return _detail.pop_with_timed_wait(elem, timeout);
}
private: bounded_buffer_detail<elem_type> _detail;
};
}} //namespace
#endif /* INCLUDED_UHD_TRANSPORT_BOUNDED_BUFFER_HPP */
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