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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "generation_hold_list.h"
#include <cassert>
namespace vespalib {
template <typename T, bool track_bytes_held, bool use_deque>
void
GenerationHoldList<T, track_bytes_held, use_deque>::assign_generation_internal(generation_t current_gen)
{
for (auto& elem : _phase_1_list) {
_phase_2_list.push_back(ElemWithGen(std::move(elem), current_gen));
}
_phase_1_list.clear();
}
template <typename T, bool track_bytes_held, bool use_deque>
void
GenerationHoldList<T, track_bytes_held, use_deque>::reclaim_internal(generation_t oldest_used_gen)
{
auto itr = _phase_2_list.begin();
auto ite = _phase_2_list.end();
for (; itr != ite; ++itr) {
if (itr->gen >= oldest_used_gen) {
break;
}
if (track_bytes_held) {
_held_bytes.store(get_held_bytes() - itr->byte_size(), std::memory_order_relaxed);
}
}
if (itr != _phase_2_list.begin()) {
_phase_2_list.erase(_phase_2_list.begin(), itr);
}
}
template <typename T, bool track_bytes_held, bool use_deque>
GenerationHoldList<T, track_bytes_held, use_deque>::GenerationHoldList()
: _phase_1_list(),
_phase_2_list(),
_held_bytes()
{
}
template <typename T, bool track_bytes_held, bool use_deque>
GenerationHoldList<T, track_bytes_held, use_deque>::~GenerationHoldList()
{
assert(_phase_1_list.empty());
assert(_phase_2_list.empty());
assert(get_held_bytes() == 0);
}
template <typename T, bool track_bytes_held, bool use_deque>
void
GenerationHoldList<T, track_bytes_held, use_deque>::insert(T data)
{
_phase_1_list.push_back(std::move(data));
if (track_bytes_held) {
_held_bytes.store(get_held_bytes() + _phase_1_list.back()->byte_size(), std::memory_order_relaxed);
}
}
template <typename T, bool track_bytes_held, bool use_deque>
void
GenerationHoldList<T, track_bytes_held, use_deque>::reclaim_all()
{
_phase_1_list.clear();
_phase_2_list.clear();
_held_bytes = 0;
}
}
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