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alloc api having new attributes for micro optimisations. 

- SDL_MALLOC when the pointer returned is not aliased.
- SDL_ALLOC_SIZE* to gives hint about the size.
main
David Carlier 2022-09-04 15:38:53 +01:00 committed by Ryan C. Gordon
parent a5e9d9bd7e
commit 975ffaea77
2 changed files with 34 additions and 4 deletions
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8
include/SDL_stdinc.h
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@ -436,9 +436,9 @@ extern "C" {
#define SDL_stack_free(data) SDL_free(data) #define SDL_stack_free(data) SDL_free(data)
#endif #endif
extern DECLSPEC void *SDLCALL SDL_malloc(size_t size); extern SDL_MALLOC DECLSPEC void *SDLCALL SDL_malloc(size_t size);
extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size); extern SDL_MALLOC SDL_ALLOC_SIZE2(1, 2) DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size); extern SDL_ALLOC_SIZE(2) DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
extern DECLSPEC void SDLCALL SDL_free(void *mem); extern DECLSPEC void SDLCALL SDL_free(void *mem);
typedef void *(SDLCALL *SDL_malloc_func)(size_t size); typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
@ -576,7 +576,7 @@ extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen); extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes); extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes);
extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen); extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
extern DECLSPEC char *SDLCALL SDL_strdup(const char *str); extern SDL_MALLOC DECLSPEC char *SDLCALL SDL_strdup(const char *str);
extern DECLSPEC char *SDLCALL SDL_strrev(char *str); extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
extern DECLSPEC char *SDLCALL SDL_strupr(char *str); extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
extern DECLSPEC char *SDLCALL SDL_strlwr(char *str); extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);

30
include/begin_code.h
View File

@ -174,3 +174,33 @@
#undef _HAS_FALLTHROUGH #undef _HAS_FALLTHROUGH
#endif /* C++17 or C2x */ #endif /* C++17 or C2x */
#endif /* SDL_FALLTHROUGH not defined */ #endif /* SDL_FALLTHROUGH not defined */
#ifndef SDL_MALLOC
#if defined(__GNUC__)
#define SDL_MALLOC __attribute__((malloc))
#elif defined(_MSC_VER)
#define SDL_MALLOC __declspec(allocator) __desclspec(restrict)
#else
#define SDL_MALLOC
#endif
#endif /* SDL_MALLOC not defined */
#ifndef SDL_ALLOC_SIZE
#if defined(__GNUC__)
#define SDL_ALLOC_SIZE(p) __attribute__((alloc_size(p)))
#elif defined(_MSC_VER)
#define SDL_ALLOC_SIZE(p)
#else
#define SDL_ALLOC_SIZE(p)
#endif
#endif /* SDL_ALLOC_SIZE not defined */
#ifndef SDL_ALLOC_SIZE2
#if defined(__GNUC__)
#define SDL_ALLOC_SIZE2(p1, p2) __attribute__((alloc_size(p1, p2)))
#elif defined(_MSC_VER)
#define SDL_ALLOC_SIZE2(p1, p2)
#else
#define SDL_ALLOC_SIZE2(p1, p2)
#endif
#endif /* SDL_ALLOC_SIZE2 not defined */