Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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54 lines
2.5 KiB
54 lines
2.5 KiB
// Protocol Buffers - Google's data interchange format |
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// Copyright 2023 Google LLC. All rights reserved. |
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// https://developers.google.com/protocol-buffers/ |
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// |
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// Redistribution and use in source and binary forms, with or without |
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// modification, are permitted provided that the following conditions are |
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// met: |
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// |
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// * Redistributions of source code must retain the above copyright |
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// notice, this list of conditions and the following disclaimer. |
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// * Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following disclaimer |
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// in the documentation and/or other materials provided with the |
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// distribution. |
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// * Neither the name of Google LLC nor the names of its |
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// contributors may be used to endorse or promote products derived from |
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// this software without specific prior written permission. |
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// |
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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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(b/295355754): 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(b/295355754): 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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