mirror of
https://github.com/RGBCube/serenity
synced 2025-05-18 05:35:07 +00:00
71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/IntrusiveList.h>
|
|
#include <AK/NonnullOwnPtr.h>
|
|
#include <AK/Vector.h>
|
|
#include <LibJS/Forward.h>
|
|
#include <LibJS/Heap/HeapBlock.h>
|
|
|
|
namespace JS {
|
|
|
|
class Allocator {
|
|
public:
|
|
Allocator(size_t cell_size);
|
|
~Allocator();
|
|
|
|
size_t cell_size() const { return m_cell_size; }
|
|
|
|
Cell* allocate_cell(Heap&);
|
|
|
|
template<typename Callback>
|
|
IterationDecision for_each_block(Callback callback)
|
|
{
|
|
for (auto& block : m_full_blocks) {
|
|
if (callback(block) == IterationDecision::Break)
|
|
return IterationDecision::Break;
|
|
}
|
|
for (auto& block : m_usable_blocks) {
|
|
if (callback(block) == IterationDecision::Break)
|
|
return IterationDecision::Break;
|
|
}
|
|
return IterationDecision::Continue;
|
|
}
|
|
|
|
void block_did_become_empty(Badge<Heap>, HeapBlock&);
|
|
void block_did_become_usable(Badge<Heap>, HeapBlock&);
|
|
|
|
private:
|
|
const size_t m_cell_size;
|
|
|
|
typedef IntrusiveList<HeapBlock, &HeapBlock::m_list_node> BlockList;
|
|
BlockList m_full_blocks;
|
|
BlockList m_usable_blocks;
|
|
};
|
|
|
|
}
|