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alloc api having new attributes for micro optimisations.

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- SDL_MALLOC when the pointer returned is not aliased.
- SDL_ALLOC_SIZE* to gives hint about the size.
This commit is contained in:
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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30
include/begin_code.h
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@ -174,3 +174,33 @@
#undef _HAS_FALLTHROUGH
#endif /* C++17 or C2x */
#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 */