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      1 /*
      2  * Copyright (C) 2019 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "fuzzing/OperationManager.h"
     18 
     19 #include <vector>
     20 
     21 #include "TestNeuralNetworksWrapper.h"
     22 #include "fuzzing/RandomGraphGeneratorUtils.h"
     23 
     24 namespace android {
     25 namespace nn {
     26 namespace fuzzing_test {
     27 
     28 template <typename T>
     29 inline bool hasValue(const std::vector<T>& vec, const T& val) {
     30     // Empty vector indicates "no filter", i.e. always true.
     31     return vec.empty() || std::count(vec.begin(), vec.end(), val) > 0;
     32 }
     33 
     34 bool OperationSignature::matchFilter(const OperationFilter& filter) {
     35     if (!hasValue(filter.opcodes, opType) || !hasValue(filter.versions, version)) {
     36         return false;
     37     }
     38 
     39     // Match data types.
     40     std::vector<Type> combinedDataTypes;
     41     for (auto dataType : supportedDataTypes) {
     42         if (hasValue(filter.dataTypes, dataType)) combinedDataTypes.push_back(dataType);
     43     }
     44     if (combinedDataTypes.empty()) return false;
     45     supportedDataTypes = combinedDataTypes;
     46 
     47     // Match rank.
     48     std::vector<uint32_t> combinedRanks;
     49     for (auto rank : supportedRanks) {
     50         if (hasValue(filter.ranks, rank)) combinedRanks.push_back(rank);
     51     }
     52     if (combinedRanks.empty()) return false;
     53     supportedRanks = combinedRanks;
     54     return true;
     55 }
     56 
     57 OperationManager* OperationManager::get() {
     58     static OperationManager instance;
     59     return &instance;
     60 }
     61 
     62 void OperationManager::addSignature(const std::string& name, const OperationSignature& signature) {
     63     mOperationSignatures.emplace(name, signature);
     64 }
     65 
     66 void OperationManager::applyFilter(const OperationFilter& filter) {
     67     mFilteredSignatures.clear();
     68     for (const auto& pair : mOperationSignatures) {
     69         mFilteredSignatures.push_back(pair.second);
     70         if (!mFilteredSignatures.back().matchFilter(filter)) mFilteredSignatures.pop_back();
     71     }
     72 }
     73 
     74 const OperationSignature& OperationManager::getRandomOperation() const {
     75     NN_FUZZER_CHECK(!mFilteredSignatures.empty());
     76     return getRandomChoice(mFilteredSignatures);
     77 }
     78 
     79 }  // namespace fuzzing_test
     80 }  // namespace nn
     81 }  // namespace android
     82