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macro: add new macro pa_align_ptr()

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This commit is contained in:
Lennart Poettering 2009-04-29 01:52:11 +02:00
parent 8247e4555b
commit 68f3ca9831
1 changed files with 8 additions and 0 deletions
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8
src/pulsecore/macro.h
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@ -57,11 +57,19 @@
#define PA_PAGE_SIZE ((size_t) 4096) #define PA_PAGE_SIZE ((size_t) 4096)
#endif #endif
/* Rounds down */
static inline void* pa_align_ptr(const void *p) {
return (void*) (((size_t) p) & ~(sizeof(void*)-1));
}
#define PA_ALIGN_PTR(x) (pa_align_ptr(x))
/* Rounds up */
static inline size_t pa_align(size_t l) { static inline size_t pa_align(size_t l) {
return (((l + sizeof(void*) - 1) / sizeof(void*)) * sizeof(void*)); return (((l + sizeof(void*) - 1) / sizeof(void*)) * sizeof(void*));
} }
#define PA_ALIGN(x) (pa_align(x)) #define PA_ALIGN(x) (pa_align(x))
/* Rounds down */
static inline void* pa_page_align_ptr(const void *p) { static inline void* pa_page_align_ptr(const void *p) {
return (void*) (((size_t) p) & ~(PA_PAGE_SIZE-1)); return (void*) (((size_t) p) & ~(PA_PAGE_SIZE-1));
} }