87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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The code included in this file is provided under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license. Permission
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To use, copy, modify, and/or distribute this software for any purpose with or
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without fee is hereby granted provided that the above copyright notice and
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this permission notice appear in all copies.
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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/**
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Handles the opening and closing of DLLs.
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This class can be used to open a DLL and get some function pointers from it.
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Since the DLL is freed when this object is deleted, it's handy for managing
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library lifetimes using RAII.
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@tags{Core}
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*/
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class JUCE_API DynamicLibrary
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{
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public:
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/** Creates an unopened DynamicLibrary object.
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Call open() to actually open one.
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*/
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DynamicLibrary() noexcept {}
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/**
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*/
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DynamicLibrary (const String& name) { open (name); }
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/** Move constructor */
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DynamicLibrary (DynamicLibrary&& other) noexcept
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{
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std::swap (handle, other.handle);
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}
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/** Destructor.
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If a library is currently open, it will be closed when this object is destroyed.
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*/
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~DynamicLibrary() { close(); }
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/** Opens a DLL.
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The name and the method by which it gets found is of course platform-specific, and
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may or may not include a path, depending on the OS.
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If a library is already open when this method is called, it will first close the library
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before attempting to load the new one.
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@returns true if the library was successfully found and opened.
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*/
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bool open (const String& name);
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/** Releases the currently-open DLL, or has no effect if none was open. */
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void close();
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/** Tries to find a named function in the currently-open DLL, and returns a pointer to it.
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If no library is open, or if the function isn't found, this will return a null pointer.
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*/
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void* getFunction (const String& functionName) noexcept;
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/** Returns the platform-specific native library handle.
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You'll need to cast this to whatever is appropriate for the OS that's in use.
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*/
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void* getNativeHandle() const noexcept { return handle; }
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private:
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void* handle = nullptr;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (DynamicLibrary)
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};
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} // namespace juce
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