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circular_buffer.hpp
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circular_buffer.hpp
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#ifndef IRODS_RING_BUFFER_HPP
#define IRODS_RING_BUFFER_HPP
#include <boost/circular_buffer.hpp>
#include "lock_and_wait_strategy.hpp"
namespace irods {
namespace experimental {
// ring buffer with protection for overwrites
// TODO move implementation here
template <typename T>
class circular_buffer {
public:
circular_buffer(
const size_t capacity,
std::unique_ptr<lock_and_wait_strategy> lws = std::make_unique<lock_and_wait>())
: cb_{capacity}
, lws_{std::move(lws)}
{
}
void pop_front(T& entry)
{
(*lws_)([this] { return 0 < cb_.size(); },
[this, &entry] {
auto iter = cb_.begin();
entry = *iter;
cb_.pop_front();
} );
}
void push_back(const T& entry)
{
(*lws_)([this] { return cb_.size() < cb_.capacity(); },
[this, &entry] { cb_.push_back(entry); } );
}
private:
boost::circular_buffer<T> cb_;
std::unique_ptr<lock_and_wait_strategy> lws_;
}; // end class circular_buffer
} // namespace experimental
} // namespace irods
#endif