mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-10 13:00:29 +03:00
1682f0b760
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 *
47 lines
931 B
C++
47 lines
931 B
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Forward.h>
|
|
#include <AK/HashTable.h>
|
|
|
|
namespace AK {
|
|
|
|
class IDAllocator {
|
|
|
|
public:
|
|
IDAllocator() = default;
|
|
~IDAllocator() = default;
|
|
|
|
int allocate()
|
|
{
|
|
int r = rand();
|
|
for (int i = 0; i < 100000; ++i) {
|
|
int allocated_id = r + i;
|
|
// Make sure we never vend ID 0, as some code may interpret that as "no ID"
|
|
if (allocated_id == 0)
|
|
++allocated_id;
|
|
if (!m_allocated_ids.contains(allocated_id)) {
|
|
m_allocated_ids.set(allocated_id);
|
|
return allocated_id;
|
|
}
|
|
}
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
void deallocate(int id)
|
|
{
|
|
m_allocated_ids.remove(id);
|
|
}
|
|
|
|
private:
|
|
HashTable<int> m_allocated_ids;
|
|
};
|
|
}
|
|
|
|
using AK::IDAllocator;
|