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serenity/Userland/Libraries/LibJS/Heap/Allocator.cpp
Brian Gianforcaro 1682f0b760 Everything: Move to SPDX license identifiers in all files.
SPDX License Identifiers are a more compact / standardized
way of representing file license information.

See: https://spdx.dev/resources/use/#identifiers

This was done with the `ambr` search and replace tool.

 ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-04-22 11:22:27 +02:00

49 lines
1,001 B
C++

/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Badge.h>
#include <LibJS/Heap/Allocator.h>
#include <LibJS/Heap/HeapBlock.h>
namespace JS {
Allocator::Allocator(size_t cell_size)
: m_cell_size(cell_size)
{
}
Allocator::~Allocator()
{
}
Cell* Allocator::allocate_cell(Heap& heap)
{
if (m_usable_blocks.is_empty()) {
auto block = HeapBlock::create_with_cell_size(heap, m_cell_size);
m_usable_blocks.append(*block.leak_ptr());
}
auto& block = *m_usable_blocks.last();
auto* cell = block.allocate();
VERIFY(cell);
if (block.is_full())
m_full_blocks.append(*m_usable_blocks.last());
return cell;
}
void Allocator::block_did_become_empty(Badge<Heap>, HeapBlock& block)
{
block.m_list_node.remove();
delete &block;
}
void Allocator::block_did_become_usable(Badge<Heap>, HeapBlock& block)
{
VERIFY(!block.is_full());
m_usable_blocks.append(block);
}
}