Ykkrosh
8b7d1fcfb3
* Changed log files to trigger standards mode in Firefox (to be consistent with other browsers), by making it valid HTML5. Changed the font and some spacing. * Made CLogger default to ignoring messages if it hasn't been initialised yet, instead of crashing. * Added leak reporting to the unit tests. * Renamed mods/_tests to mods/_test.xero, since it's only used by Xeromyces and the other tests use mods/_test.otherstuff instead. * Fixed Atlas compilation on Windows. * Moved Atlas's DLL-loading code into a separate class, so it can be shared. This was SVN commit r4707.
64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
#ifndef DLLLOADER_H__
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#define DLLLOADER_H__
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#include "ps/Errors.h"
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ERROR_GROUP(DllLoader);
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ERROR_TYPE(DllLoader, DllNotLoaded);
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ERROR_TYPE(DllLoader, SymbolNotFound);
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class DllLoader
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{
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public:
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/**
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* Prepare the DLL loader. Does no actual work.
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*
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* @param name base name of the library (from which we'll derive
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* "name.dll", "libname_dbg.so", etc). Pointer must remain valid for
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* this object's lifetime (which is fine if you just use a string literal).
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*/
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DllLoader(const char* name);
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~DllLoader();
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/**
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* Attempt to load and initialise the library, if not already. Can be harmlessly
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* called multiple times. Returns false if unsuccessful.
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*/
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bool LoadDLL();
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/**
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* Check whether the library has been loaded successfully. Returns false
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* before {@link #LoadDLL} has been called; otherwise returns the same as
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* LoadDLL did.
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*/
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bool IsLoaded() const;
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/**
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* Attempt to load a named symbol from the library. If {@link #IsLoaded} is
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* false, throws PSERROR_DllLoader_DllNotLoaded. If it cannot load the
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* symbol, throws PSERROR_DllLoader_SymbolNotFound. In both cases, sets fptr
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* to NULL. Otherwise, fptr is set to point to the loaded function.
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*
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* @throws PSERROR_DllLoader
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*/
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template <typename T>
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void LoadSymbol(const char* name, T& fptr) const;
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private:
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// Typeless version - the public LoadSymbol hides the slightly ugly
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// casting from users.
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void LoadSymbolInternal(const char* name, void** fptr) const;
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const char* m_Name;
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void* m_Handle;
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};
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template <typename T>
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void DllLoader::LoadSymbol(const char* name, T& fptr) const
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{
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LoadSymbolInternal(name, (void**)&fptr);
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}
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#endif // DLLLOADER_H__
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