Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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88 lines
3.3 KiB
88 lines
3.3 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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// This file contains support code for generated C++ thunks. |
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#ifndef GOOGLE_PROTOBUF_RUST_CPP_KERNEL_CPP_H__ |
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#define GOOGLE_PROTOBUF_RUST_CPP_KERNEL_CPP_H__ |
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#include <cstddef> |
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#include "google/protobuf/message.h" |
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namespace google { |
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namespace protobuf { |
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namespace rust_internal { |
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// Represents serialized Protobuf wire format data. |
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// |
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// Only to be used to transfer serialized data from C++ to Rust under these |
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// assumptions: |
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// * Rust and C++ versions of this struct are ABI compatible. |
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// * Rust version owns and frees its data. |
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// * The data were allocated using the Rust allocator. |
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// |
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extern "C" struct SerializedData { |
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// Owns the memory. |
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const char* data; |
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size_t len; |
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SerializedData(const char* data, size_t len) : data(data), len(len) {} |
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}; |
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// Allocates memory using the current Rust global allocator. |
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// |
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// This function is defined in `rust_alloc_for_cpp_api.rs`. |
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extern "C" void* __pb_rust_alloc(size_t size, size_t align); |
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inline SerializedData SerializeMsg(const google::protobuf::Message* msg) { |
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size_t len = msg->ByteSizeLong(); |
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void* bytes = __pb_rust_alloc(len, alignof(char)); |
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if (!msg->SerializeToArray(bytes, static_cast<int>(len))) { |
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ABSL_LOG(FATAL) << "Couldn't serialize the message."; |
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} |
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return SerializedData(static_cast<char*>(bytes), len); |
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} |
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// Represents an ABI-stable version of &[u8]/string_view (borrowed slice of |
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// bytes) for FFI use only. |
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struct PtrAndLen { |
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/// Borrows the memory. |
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const char* ptr; |
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size_t len; |
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PtrAndLen(const char* ptr, size_t len) : ptr(ptr), len(len) {} |
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}; |
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} // namespace rust_internal |
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} // namespace protobuf |
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} // namespace google |
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#endif // GOOGLE_PROTOBUF_RUST_CPP_KERNEL_CPP_H__
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