9de27f16bc
* Publishing R5 content * Updated ade revision * updated readme * add possibility to build CPU plugin with Intel MKL package
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
// Copyright (C) 2018 Intel Corporation
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// SPDX-License-Identifier: Apache-2.0
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//
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/**
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* @brief POSIX compatible loader for a shared object
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* @file lin_shared_object_loader.h
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*/
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#pragma once
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#include <dlfcn.h>
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#include "../../ie_api.h"
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#include "../ie_exception.hpp"
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namespace InferenceEngine {
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namespace details {
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/**
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* @brief This class provides an OS shared module abstraction
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*/
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class SharedObjectLoader {
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private:
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void *shared_object = nullptr;
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public:
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/**
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* @brief Loads a library with the name specified. The library is loaded according to
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* the POSIX rules for dlopen
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* @param pluginName Full or relative path to the library
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*/
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explicit SharedObjectLoader(const char* pluginName) {
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shared_object = dlopen(pluginName, RTLD_LAZY);
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if (shared_object == nullptr)
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THROW_IE_EXCEPTION << "Cannot load library '" << pluginName << "': " << dlerror();
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}
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~SharedObjectLoader() noexcept(false) {
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if (0 != dlclose(shared_object)) {
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THROW_IE_EXCEPTION << "dlclose failed: " << dlerror();
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}
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}
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/**
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* @brief Searches for a function symbol in the loaded module
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* @param symbolName Name of the function to find
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* @return A pointer to the function if found
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* @throws InferenceEngineException if the function is not found
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*/
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void *get_symbol(const char* symbolName) const {
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void * procAddr = nullptr;
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procAddr = dlsym(shared_object, symbolName);
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if (procAddr == nullptr)
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THROW_IE_EXCEPTION << "dlSym cannot locate method '" << symbolName << "': " << dlerror();
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return procAddr;
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}
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};
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} // namespace details
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} // namespace InferenceEngine
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