From 6aaedb813fa11ba0679c3051bc2eb28646b9506c Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 30 Aug 2025 16:53:58 -0700 Subject: Update to SDL3 --- src/contrib/SDL-3.2.20/include/SDL3/SDL_loadso.h | 145 +++++++++++++++++++++++ 1 file changed, 145 insertions(+) create mode 100644 src/contrib/SDL-3.2.20/include/SDL3/SDL_loadso.h (limited to 'src/contrib/SDL-3.2.20/include/SDL3/SDL_loadso.h') diff --git a/src/contrib/SDL-3.2.20/include/SDL3/SDL_loadso.h b/src/contrib/SDL-3.2.20/include/SDL3/SDL_loadso.h new file mode 100644 index 0000000..f8649d7 --- /dev/null +++ b/src/contrib/SDL-3.2.20/include/SDL3/SDL_loadso.h @@ -0,0 +1,145 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/* WIKI CATEGORY: SharedObject */ + +/** + * # CategorySharedObject + * + * System-dependent library loading routines. + * + * Shared objects are code that is programmatically loadable at runtime. + * Windows calls these "DLLs", Linux calls them "shared libraries", etc. + * + * To use them, build such a library, then call SDL_LoadObject() on it. Once + * loaded, you can use SDL_LoadFunction() on that object to find the address + * of its exported symbols. When done with the object, call SDL_UnloadObject() + * to dispose of it. + * + * Some things to keep in mind: + * + * - These functions only work on C function names. Other languages may have + * name mangling and intrinsic language support that varies from compiler to + * compiler. + * - Make sure you declare your function pointers with the same calling + * convention as the actual library function. Your code will crash + * mysteriously if you do not do this. + * - Avoid namespace collisions. If you load a symbol from the library, it is + * not defined whether or not it goes into the global symbol namespace for + * the application. If it does and it conflicts with symbols in your code or + * other shared libraries, you will not get the results you expect. :) + * - Once a library is unloaded, all pointers into it obtained through + * SDL_LoadFunction() become invalid, even if the library is later reloaded. + * Don't unload a library if you plan to use these pointers in the future. + * Notably: beware of giving one of these pointers to atexit(), since it may + * call that pointer after the library unloads. + */ + +#ifndef SDL_loadso_h_ +#define SDL_loadso_h_ + +#include +#include + +#include +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +extern "C" { +#endif + +/** + * An opaque datatype that represents a loaded shared object. + * + * \since This datatype is available since SDL 3.2.0. + * + * \sa SDL_LoadObject + * \sa SDL_LoadFunction + * \sa SDL_UnloadObject + */ +typedef struct SDL_SharedObject SDL_SharedObject; + +/** + * Dynamically load a shared object. + * + * \param sofile a system-dependent name of the object file. + * \returns an opaque pointer to the object handle or NULL on failure; call + * SDL_GetError() for more information. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_LoadFunction + * \sa SDL_UnloadObject + */ +extern SDL_DECLSPEC SDL_SharedObject * SDLCALL SDL_LoadObject(const char *sofile); + +/** + * Look up the address of the named function in a shared object. + * + * This function pointer is no longer valid after calling SDL_UnloadObject(). + * + * This function can only look up C function names. Other languages may have + * name mangling and intrinsic language support that varies from compiler to + * compiler. + * + * Make sure you declare your function pointers with the same calling + * convention as the actual library function. Your code will crash + * mysteriously if you do not do this. + * + * If the requested function doesn't exist, NULL is returned. + * + * \param handle a valid shared object handle returned by SDL_LoadObject(). + * \param name the name of the function to look up. + * \returns a pointer to the function or NULL on failure; call SDL_GetError() + * for more information. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_LoadObject + */ +extern SDL_DECLSPEC SDL_FunctionPointer SDLCALL SDL_LoadFunction(SDL_SharedObject *handle, const char *name); + +/** + * Unload a shared object from memory. + * + * Note that any pointers from this object looked up through + * SDL_LoadFunction() will no longer be valid. + * + * \param handle a valid shared object handle returned by SDL_LoadObject(). + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_LoadObject + */ +extern SDL_DECLSPEC void SDLCALL SDL_UnloadObject(SDL_SharedObject *handle); + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +} +#endif +#include + +#endif /* SDL_loadso_h_ */ -- cgit v1.2.3