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116 lines
3.8 KiB
C
116 lines
3.8 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/**
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* \file SDL_loadso.h
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*
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* System dependent library loading routines
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*
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* Some things to keep in mind:
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* \li These functions only work on C function names. Other languages may
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* have name mangling and intrinsic language support that varies from
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* compiler to compiler.
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* \li Make sure you declare your function pointers with the same calling
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* convention as the actual library function. Your code will crash
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* mysteriously if you do not do this.
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* \li Avoid namespace collisions. If you load a symbol from the library,
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* it is not defined whether or not it goes into the global symbol
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* namespace for the application. If it does and it conflicts with
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* symbols in your code or other shared libraries, you will not get
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* the results you expect. :)
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*/
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#ifndef SDL_loadso_h_
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#define SDL_loadso_h_
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#include "SDL_stdinc.h"
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#include "SDL_error.h"
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#include "begin_code.h"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Dynamically load a shared object.
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*
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* \param sofile a system-dependent name of the object file
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* \returns an opaque pointer to the object handle or NULL if there was an
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* error; call SDL_GetError() for more information.
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*
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* \since This function is available since SDL 2.0.0.
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*
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* \sa SDL_LoadFunction
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* \sa SDL_UnloadObject
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*/
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extern DECLSPEC void *SDLCALL SDL_LoadObject(const char *sofile);
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/**
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* Look up the address of the named function in a shared object.
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*
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* This function pointer is no longer valid after calling SDL_UnloadObject().
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*
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* This function can only look up C function names. Other languages may have
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* name mangling and intrinsic language support that varies from compiler to
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* compiler.
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*
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* Make sure you declare your function pointers with the same calling
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* convention as the actual library function. Your code will crash
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* mysteriously if you do not do this.
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*
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* If the requested function doesn't exist, NULL is returned.
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*
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* \param handle a valid shared object handle returned by SDL_LoadObject()
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* \param name the name of the function to look up
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* \returns a pointer to the function or NULL if there was an error; call
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* SDL_GetError() for more information.
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*
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* \since This function is available since SDL 2.0.0.
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*
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* \sa SDL_LoadObject
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* \sa SDL_UnloadObject
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*/
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extern DECLSPEC void *SDLCALL SDL_LoadFunction(void *handle,
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const char *name);
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/**
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* Unload a shared object from memory.
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*
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* \param handle a valid shared object handle returned by SDL_LoadObject()
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*
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* \since This function is available since SDL 2.0.0.
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*
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* \sa SDL_LoadFunction
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* \sa SDL_LoadObject
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*/
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extern DECLSPEC void SDLCALL SDL_UnloadObject(void *handle);
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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}
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#endif
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#include "close_code.h"
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#endif /* SDL_loadso_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
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