citra/src/common/detached_tasks.h
Andrea Pappacoda cdb240f3d4
chore: make yuzu REUSE compliant
[REUSE] is a specification that aims at making file copyright
information consistent, so that it can be both human and machine
readable. It basically requires that all files have a header containing
copyright and licensing information. When this isn't possible, like
when dealing with binary assets, generated files or embedded third-party
dependencies, it is permitted to insert copyright information in the
`.reuse/dep5` file.

Oh, and it also requires that all the licenses used in the project are
present in the `LICENSES` folder, that's why the diff is so huge.
This can be done automatically with `reuse download --all`.

The `reuse` tool also contains a handy subcommand that analyzes the
project and tells whether or not the project is (still) compliant,
`reuse lint`.

Following REUSE has a few advantages over the current approach:

- Copyright information is easy to access for users / downstream
- Files like `dist/license.md` do not need to exist anymore, as
  `.reuse/dep5` is used instead
- `reuse lint` makes it easy to ensure that copyright information of
  files like binary assets / images is always accurate and up to date

To add copyright information of files that didn't have it I looked up
who committed what and when, for each file. As yuzu contributors do not
have to sign a CLA or similar I couldn't assume that copyright ownership
was of the "yuzu Emulator Project", so I used the name and/or email of
the commit author instead.

[REUSE]: https://reuse.software

Follow-up to 01cf05bc75
2022-07-27 12:53:49 +02:00

40 lines
1.2 KiB
C++

// SPDX-FileCopyrightText: 2018 Citra Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <condition_variable>
#include <functional>
namespace Common {
/**
* A background manager which ensures that all detached task is finished before program exits.
*
* Some tasks, telemetry submission for example, prefer executing asynchronously and don't care
* about the result. These tasks are suitable for std::thread::detach(). However, this is unsafe if
* the task is launched just before the program exits (which is a common case for telemetry), so we
* need to block on these tasks on program exit.
*
* To make detached task safe, a single DetachedTasks object should be placed in the main(), and
* call WaitForAllTasks() after all program execution but before global/static variable destruction.
* Any potentially unsafe detached task should be executed via DetachedTasks::AddTask.
*/
class DetachedTasks {
public:
DetachedTasks();
~DetachedTasks();
void WaitForAllTasks();
static void AddTask(std::function<void()> task);
private:
static DetachedTasks* instance;
std::condition_variable cv;
std::mutex mutex;
int count = 0;
};
} // namespace Common