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58 lines
1.8 KiB
58 lines
1.8 KiB
// Copyright 2023 The Centipede 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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// https://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 "./centipede/execution_metadata.h"
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#include <cstddef>
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#include <functional>
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#include "./centipede/shared_memory_blob_sequence.h"
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#include "./common/defs.h"
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namespace fuzztest::internal {
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bool ExecutionMetadata::AppendCmpEntry(ByteSpan a, ByteSpan b) {
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if (a.size() != b.size()) return false;
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// Size must fit in a byte.
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if (a.size() >= 256) return false;
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cmp_data.push_back(a.size());
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cmp_data.insert(cmp_data.end(), a.begin(), a.end());
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cmp_data.insert(cmp_data.end(), b.begin(), b.end());
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return true;
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}
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bool ExecutionMetadata::Write(Blob::SizeAndTagT tag,
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BlobSequence &outputs_blobseq) const {
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return outputs_blobseq.Write({tag, cmp_data.size(), cmp_data.data()});
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}
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void ExecutionMetadata::Read(Blob blob) {
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cmp_data.assign(blob.data, blob.data + blob.size);
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}
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bool ExecutionMetadata::ForEachCmpEntry(
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std::function<void(ByteSpan, ByteSpan)> callback) const {
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size_t i = 0;
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while (i < cmp_data.size()) {
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auto size = cmp_data[i];
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if (i + 2 * size + 1 > cmp_data.size()) return false;
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ByteSpan a(cmp_data.data() + i + 1, size);
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ByteSpan b(cmp_data.data() + i + size + 1, size);
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i += 1 + 2 * size;
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callback(a, b);
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}
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return true;
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}
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} // namespace fuzztest::internal
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