Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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31 lines
1.1 KiB
31 lines
1.1 KiB
// Protocol Buffers - Google's data interchange format |
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// Copyright 2023 Google LLC. All rights reserved. |
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// |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file or at |
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// https://developers.google.com/open-source/licenses/bsd |
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#ifndef UPB_PROTOS_PROTOS_EXTENSION_LOCK_H_ |
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#define UPB_PROTOS_PROTOS_EXTENSION_LOCK_H_ |
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#include <atomic> |
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namespace protos::internal { |
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// TODO: Temporary locking api for cross-language |
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// concurrency issue around extension api that uses lazy promotion |
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// from unknown data to upb_MiniTableExtension. Will be replaced by |
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// a core runtime solution in the future. |
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// |
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// Any api(s) using unknown or extension data (GetOrPromoteExtension, |
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// Serialize and others) call lock/unlock to provide a way for |
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// mixed language implementations to avoid race conditions) |
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using UpbExtensionUnlocker = void (*)(const void*); |
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using UpbExtensionLocker = UpbExtensionUnlocker (*)(const void*); |
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// TODO: Expose as function instead of global. |
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extern std::atomic<UpbExtensionLocker> upb_extension_locker_global; |
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} // namespace protos::internal |
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#endif // UPB_PROTOS_PROTOS_EXTENSION_LOCK_H_
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