vasilito
ff4ff35918
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
55 lines
1.2 KiB
C++
55 lines
1.2 KiB
C++
/*
|
|
* Copyright (c) Meta Platforms, Inc. and affiliates.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under both the BSD-style license (found in the
|
|
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
|
|
* in the COPYING file in the root directory of this source tree).
|
|
*/
|
|
#pragma once
|
|
|
|
#include <atomic>
|
|
#include <cassert>
|
|
#include <stdexcept>
|
|
#include <string>
|
|
|
|
namespace pzstd {
|
|
|
|
// Coordinates graceful shutdown of the pzstd pipeline
|
|
class ErrorHolder {
|
|
std::atomic<bool> error_;
|
|
std::string message_;
|
|
|
|
public:
|
|
ErrorHolder() : error_(false) {}
|
|
|
|
bool hasError() noexcept {
|
|
return error_.load();
|
|
}
|
|
|
|
void setError(std::string message) noexcept {
|
|
// Given multiple possibly concurrent calls, exactly one will ever succeed.
|
|
bool expected = false;
|
|
if (error_.compare_exchange_strong(expected, true)) {
|
|
message_ = std::move(message);
|
|
}
|
|
}
|
|
|
|
bool check(bool predicate, std::string message) noexcept {
|
|
if (!predicate) {
|
|
setError(std::move(message));
|
|
}
|
|
return !hasError();
|
|
}
|
|
|
|
std::string getError() noexcept {
|
|
error_.store(false);
|
|
return std::move(message_);
|
|
}
|
|
|
|
~ErrorHolder() {
|
|
assert(!hasError());
|
|
}
|
|
};
|
|
}
|