2 * Copyright (c) Meta Platforms, Inc. and affiliates.
5 * This source code is licensed under both the BSD-style license (found in the
6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
7 * in the COPYING file in the root directory of this source tree).
18 // Coordinates graceful shutdown of the pzstd pipeline
20 std::atomic<bool> error_;
24 ErrorHolder() : error_(false) {}
26 bool hasError() noexcept {
30 void setError(std::string message) noexcept {
31 // Given multiple possibly concurrent calls, exactly one will ever succeed.
32 bool expected = false;
33 if (error_.compare_exchange_strong(expected, true)) {
34 message_ = std::move(message);
38 bool check(bool predicate, std::string message) noexcept {
40 setError(std::move(message));
45 std::string getError() noexcept {
47 return std::move(message_);