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// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
#ifndef INCLUDED_LIBGRAS_IMPL_OUTPUT_BUFFER_QUEUES_HPP
#define INCLUDED_LIBGRAS_IMPL_OUTPUT_BUFFER_QUEUES_HPP
#include <gras/buffer_queue.hpp>
#include <gras_impl/bitset.hpp>
#include <vector>
namespace gras
{
struct OutputBufferQueues
{
void set_buffer_queue(const size_t i, BufferQueueSptr queue)
{
_queues[i] = queue;
_update(i);
}
void set_reserve_bytes(const size_t i, const size_t num_bytes)
{
_reserve_bytes[i] = num_bytes;
_update(i);
}
GRAS_FORCE_INLINE void resize(const size_t size)
{
_bitset.resize(size);
_queues.resize(size);
_reserve_bytes.resize(size, 1);
}
GRAS_FORCE_INLINE void push(const size_t i, const SBuffer &value)
{
_queues[i]->push(value);
_update(i);
}
GRAS_FORCE_INLINE void flush_all(void)
{
const size_t old_size = this->size();
this->resize(0);
this->resize(old_size);
}
//! used for input buffer inlining
/*
GRAS_FORCE_INLINE void push_front(const size_t i, const T &value)
{
ASSERT(not _queues[i].full());
_queues[i].push_front(value);
_bitset.set(i);
}
*/
GRAS_FORCE_INLINE SBuffer &front(const size_t i)
{
ASSERT(not _queues[i]->empty());
return _queues[i]->front();
}
GRAS_FORCE_INLINE void pop(const size_t i)
{
_queues[i]->pop();
_update(i);
}
GRAS_FORCE_INLINE void fail(const size_t i)
{
_bitset.reset(i);
}
/*
GRAS_FORCE_INLINE void flush(const size_t i)
{
_queues[i].clear();
_bitset.reset(i);
}
GRAS_FORCE_INLINE void flush_all(void)
{
for (size_t i = 0; i < this->size(); i++) this->flush(i);
}
*/
GRAS_FORCE_INLINE bool ready(const size_t i) const
{
if (_queues[i]->empty()) return false;
const SBuffer &front = _queues[i]->front();
const size_t avail = front.get_actual_length() - front.offset - front.length;
return avail >= _reserve_bytes[i];
}
GRAS_FORCE_INLINE bool empty(const size_t i) const
{
return _queues[i]->empty();
}
GRAS_FORCE_INLINE bool all_ready(void) const
{
return _bitset.all();
}
GRAS_FORCE_INLINE size_t size(void) const
{
return _queues.size();
}
GRAS_FORCE_INLINE void _update(const size_t i)
{
_bitset.set(i, this->ready(i));
}
BitSet _bitset;
std::vector<BufferQueueSptr> _queues;
std::vector<size_t> _reserve_bytes;
};
} //namespace gras
#endif /*INCLUDED_LIBGRAS_IMPL_OUTPUT_BUFFER_QUEUES_HPP*/
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