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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/zstd/contrib/pzstd/ErrorHolder.h | |
parent | Initial commit. (diff) | |
download | ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.tar.xz ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/zstd/contrib/pzstd/ErrorHolder.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/zstd/contrib/pzstd/ErrorHolder.h b/src/zstd/contrib/pzstd/ErrorHolder.h new file mode 100644 index 000000000..829651c59 --- /dev/null +++ b/src/zstd/contrib/pzstd/ErrorHolder.h @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2016-present, Facebook, Inc. + * 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()); + } +}; +} |