f3eade2f62
Drop the AGPL license in favor of a source-available license. See the blog post [1] for details. [1] https://www.scylladb.com/2024/12/18/why-were-moving-to-a-source-available-license/
41 lines
911 B
C++
41 lines
911 B
C++
/*
|
|
* Copyright (C) 2020-present ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <atomic>
|
|
|
|
namespace utils {
|
|
|
|
/*
|
|
* The neat_id class is purely a debugging thing -- when reading
|
|
* the logs with object IDs in it it's more handy to look at those
|
|
* consisting * of 1-3 digits, rather than 16 hex-digits of a printed
|
|
* pointer.
|
|
*
|
|
* Embed with [[no_unique_address]] tag for memory efficiency
|
|
*/
|
|
template <bool Debug>
|
|
struct neat_id {
|
|
unsigned int operator()() const noexcept { return reinterpret_cast<uintptr_t>(this); }
|
|
};
|
|
|
|
template <>
|
|
struct neat_id<true> {
|
|
unsigned int _id;
|
|
static unsigned int _next() noexcept {
|
|
static std::atomic<unsigned int> rover {1};
|
|
return rover.fetch_add(1);
|
|
}
|
|
|
|
neat_id() noexcept : _id(_next()) {}
|
|
unsigned int operator()() const noexcept { return _id; }
|
|
};
|
|
|
|
} // namespace
|