173 lines
3.0 KiB
C++
173 lines
3.0 KiB
C++
// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Core/DynLib.hpp>
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#include <Nazara/Core/Config.hpp>
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#include <Nazara/Core/Error.hpp>
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#include <memory>
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#if defined(NAZARA_PLATFORM_WINDOWS)
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#include <Nazara/Core/Win32/DynLibImpl.hpp>
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#elif defined(NAZARA_PLATFORM_POSIX)
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#include <Nazara/Core/Posix/DynLibImpl.hpp>
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#else
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#error No implementation for this platform
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#endif
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#if NAZARA_CORE_THREADSAFE && NAZARA_THREADSAFETY_DYNLIB
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#include <Nazara/Core/ThreadSafety.hpp>
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#else
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#include <Nazara/Core/ThreadSafetyOff.hpp>
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#endif
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#include <Nazara/Core/Debug.hpp>
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namespace Nz
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{
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/*!
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* \ingroup core
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* \class Nz::DynLib
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* \brief Core class that represents a dynamic library loader
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*/
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/*!
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* \brief Constructs a DynLib object by default
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*/
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DynLib::DynLib() :
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m_impl(nullptr)
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{
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}
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/*!
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* \brief Constructs a DynLib object by move semantic
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*
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* \param lib DynLib to move into this
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*/
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DynLib::DynLib(DynLib&& lib) :
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m_lastError(std::move(lib.m_lastError)),
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m_impl(lib.m_impl)
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{
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lib.m_impl = nullptr;
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}
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/*!
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* \brief Destructs the object and calls Unload
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*
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* \see Unload
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*/
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DynLib::~DynLib()
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{
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Unload();
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}
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/*!
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* \brief Gets the last error
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* \return Last error
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*/
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String DynLib::GetLastError() const
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{
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NazaraLock(m_mutex)
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return m_lastError;
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}
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/*!
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* \brief Gets the symbol for the name
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* \return Function which is the symbol of the function name
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*
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* \remark Produces a NazaraError if library is not loaded with NAZARA_CORE_SAFE defined
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*/
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DynLibFunc DynLib::GetSymbol(const String& symbol) const
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{
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NazaraLock(m_mutex)
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#if NAZARA_CORE_SAFE
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if (!IsLoaded())
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{
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NazaraError("Library not opened");
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return nullptr;
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}
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#endif
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return m_impl->GetSymbol(symbol, &m_lastError);
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}
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/*!
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* \brief Checks whether the library is loaded
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* \return true if loaded
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*/
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bool DynLib::IsLoaded() const
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{
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return m_impl != nullptr;
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}
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/*!
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* \brief Loads the library with that path
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* \return true if loading is successful
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*
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* \param libraryPath Path of the library
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*
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* \remark Produces a NazaraError if library is could not be loaded
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*/
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bool DynLib::Load(const String& libraryPath)
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{
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NazaraLock(m_mutex)
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Unload();
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std::unique_ptr<DynLibImpl> impl(new DynLibImpl(this));
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if (!impl->Load(libraryPath, &m_lastError))
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{
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NazaraError("Failed to load library: " + m_lastError);
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return false;
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}
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m_impl = impl.release();
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return true;
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}
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/*!
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* \brief Unloads the library
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*/
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void DynLib::Unload()
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{
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NazaraLock(m_mutex)
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if (IsLoaded())
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{
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m_impl->Unload();
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delete m_impl;
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m_impl = nullptr;
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}
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}
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/*!
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* \brief Moves the other lib into this
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* \return A reference to this
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*
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* \param lib DynLib to move in this
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*/
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DynLib& DynLib::operator=(DynLib&& lib)
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{
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Unload();
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m_impl = lib.m_impl;
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m_lastError = std::move(lib.m_lastError);
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lib.m_impl = nullptr;
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return *this;
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}
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}
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