mirror of https://github.com/alibaba/MNN.git
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
//
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// Backend.cpp
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// MNN
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//
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// Created by MNN on 2018/07/06.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#include <stdio.h>
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#include <mutex>
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#include "MNN_generated.h"
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#include "core/Macro.h"
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#include "core/Backend.hpp"
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namespace MNN {
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void registerBackend();
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static std::map<MNNForwardType, std::pair<const BackendCreator*, bool>>& GetExtraCreator() {
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static std::once_flag flag;
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static std::map<MNNForwardType, std::pair<const BackendCreator*, bool>>* gExtraCreator;
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std::call_once(flag,
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[&]() { gExtraCreator = new std::map<MNNForwardType, std::pair<const BackendCreator*, bool>>; });
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return *gExtraCreator;
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}
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const BackendCreator* MNNGetExtraBackendCreator(MNNForwardType type) {
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registerBackend();
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auto& gExtraCreator = GetExtraCreator();
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auto iter = gExtraCreator.find(type);
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if (iter == gExtraCreator.end()) {
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return nullptr;
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}
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if (!iter->second.second) {
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return iter->second.first;
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}
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Backend::Info info;
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info.type = type;
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std::shared_ptr<Backend> bn(iter->second.first->onCreate(info));
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if (nullptr != bn.get()) {
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return iter->second.first;
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}
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return nullptr;
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}
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bool MNNInsertExtraBackendCreator(MNNForwardType type, const BackendCreator* creator, bool needCheck) {
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auto& gExtraCreator = GetExtraCreator();
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if (gExtraCreator.find(type) != gExtraCreator.end()) {
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MNN_ASSERT(false && "duplicate type");
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return false;
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}
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gExtraCreator.insert(std::make_pair(type, std::make_pair(creator, needCheck)));
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return true;
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}
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} // namespace MNN
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