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e9c99e93e7
This CL adds the algorithm include to, hopefully, satisfy the MSVC build. Change-Id: Ic0a8a9dfeffe7a02d94d748dbb2813ac576b5371 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/30660 Reviewed-by: Kai Ninomiya <kainino@chromium.org> Commit-Queue: dan sinclair <dsinclair@chromium.org>
67 lines
2.9 KiB
C++
67 lines
2.9 KiB
C++
// Copyright 2020 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "dawn_wire/ChunkedCommandHandler.h"
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#include <algorithm>
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namespace dawn_wire {
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ChunkedCommandHandler::~ChunkedCommandHandler() = default;
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const volatile char* ChunkedCommandHandler::HandleCommands(const volatile char* commands,
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size_t size) {
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if (mChunkedCommandRemainingSize > 0) {
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// If there is a chunked command in flight, append the command data.
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// We append at most |mChunkedCommandRemainingSize| which is enough to finish the
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// in-flight chunked command, and then pass the rest along to a second call to
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// |HandleCommandsImpl|.
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size_t chunkSize = std::min(size, mChunkedCommandRemainingSize);
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mChunkedCommandData.insert(mChunkedCommandData.end(), commands, commands + chunkSize);
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commands += chunkSize;
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mChunkedCommandRemainingSize -= chunkSize;
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size -= chunkSize;
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if (mChunkedCommandRemainingSize == 0) {
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// Once the chunked command is complete, pass the data to the command handler
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// implemenation.
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const char* chunkedCommands = mChunkedCommandData.data();
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size_t chunkedSize = mChunkedCommandData.size();
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if (HandleCommandsImpl(chunkedCommands, chunkedSize) == nullptr) {
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// |HandleCommandsImpl| returns nullptr on error. Forward any errors
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// out.
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return nullptr;
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}
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mChunkedCommandData.clear();
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}
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}
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return HandleCommandsImpl(commands, size);
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}
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void ChunkedCommandHandler::BeginChunkedCommandData(const volatile char* commands,
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size_t commandSize,
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size_t initialSize) {
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ASSERT(mChunkedCommandData.empty());
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// Reserve space for all the command data we're expecting, and append the initial data
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// to the end of the vector.
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mChunkedCommandRemainingSize = commandSize - initialSize;
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mChunkedCommandData.reserve(commandSize);
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mChunkedCommandData.insert(mChunkedCommandData.end(), commands, commands + initialSize);
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}
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} // namespace dawn_wire
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