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Added functions to query and set the SDL memory allocation functions:

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SDL_GetMemoryFunctions()
    SDL_SetMemoryFunctions()
    SDL_GetNumAllocations()
This commit is contained in:
Sam Lantinga 2017-10-12 13:44:28 -07:00
parent 949947d95b
commit 4d7a2db434
25 changed files with 311 additions and 68 deletions
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31
include/SDL_stdinc.h
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@ -347,6 +347,37 @@ extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
extern DECLSPEC void SDLCALL SDL_free(void *mem);
typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);
typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
typedef void (SDLCALL *SDL_free_func)(void *mem);
/**
* \brief Get the current set of SDL memory functions
*/
extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
SDL_calloc_func *calloc_func,
SDL_realloc_func *realloc_func,
SDL_free_func *free_func);
/**
* \brief Replace SDL's memory allocation functions with a custom set
*
* \note If you are replacing SDL's memory functions, you should call
* SDL_GetNumAllocations() and be very careful if it returns non-zero.
* That means that your free function will be called with memory
* allocated by the previous memory allocation functions.
*/
extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
SDL_calloc_func calloc_func,
SDL_realloc_func realloc_func,
SDL_free_func free_func);
/**
* \brief Get the number of outstanding (unfreed) allocations
*/
extern DECLSPEC int SDLCALL SDL_GetNumAllocations();
extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);