203  * n: alignment
212 /* Use MALLOCX_ALIGN_GET() if alignment may not be specified in flags. */
229  * Minimum allocation alignment is 2^LG_QUANTUM bytes (ignoring tiny size
282 #    error "Unknown minimum alignment for architecture; specify via "
339 #define	ALIGNMENT_ADDR2BASE(a, alignment)				\  argument
340 	((void *)((uintptr_t)(a) & ((~(alignment)) + 1)))
343 #define	ALIGNMENT_ADDR2OFFSET(a, alignment)				\  argument
344 	((size_t)((uintptr_t)(a) & (alignment - 1)))
346 /* Return the smallest alignment multiple that is >= s. */
347 #define	ALIGNMENT_CEILING(s, alignment)					\  argument
348 	(((s) + (alignment - 1)) & ((~(alignment)) + 1))
575 size_t	sa2u(size_t size, size_t alignment);
810  * specified size and alignment.
813 sa2u(size_t size, size_t alignment)  in sa2u()  argument
817 	assert(alignment != 0 && ((alignment - 1) & alignment) == 0);  in sa2u()
820 	if (size <= SMALL_MAXCLASS && alignment < PAGE) {  in sa2u()
822 		 * Round size up to the nearest multiple of alignment.  in sa2u()
829 		 *   Size |   Base 2 | Minimum alignment  in sa2u()
835 		usize = s2u(ALIGNMENT_CEILING(size, alignment));  in sa2u()
841 	if (likely(size <= large_maxclass) && likely(alignment < chunksize)) {  in sa2u()
843 		 * We can't achieve subpage alignment, so round up alignment  in sa2u()
846 		alignment = PAGE_CEILING(alignment);  in sa2u()
853 		 * would need to allocate in order to guarantee the alignment.  in sa2u()
855 		if (usize + large_pad + alignment - PAGE <= arena_maxrun)  in sa2u()
861 	if (unlikely(alignment > HUGE_MAXCLASS))  in sa2u()
865 	 * We can't achieve subchunk alignment, so round up alignment to the  in sa2u()
868 	alignment = CHUNK_CEILING(alignment);  in sa2u()
883 	 * order to guarantee the alignment.  in sa2u()
885 	if (usize + alignment - PAGE < usize) {  in sa2u()
997 void	*ipallocztm(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,
999 void	*ipalloct(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,
1001 void	*ipalloc(tsd_t *tsd, size_t usize, size_t alignment, bool zero);
1014     size_t extra, size_t alignment, bool zero, tcache_t *tcache,
1017     size_t alignment, bool zero, tcache_t *tcache, arena_t *arena);
1019     size_t alignment, bool zero);
1021     size_t extra, size_t alignment, bool zero);
1078 ipallocztm(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,  in ipallocztm()  argument
1084 	assert(usize == sa2u(usize, alignment));  in ipallocztm()
1088 	ret = arena_palloc(tsdn, arena, usize, alignment, zero, tcache);  in ipallocztm()
1089 	assert(ALIGNMENT_ADDR2BASE(ret, alignment) == ret);  in ipallocztm()
1098 ipalloct(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,  in ipalloct()  argument
1102 	return (ipallocztm(tsdn, usize, alignment, zero, tcache, false, arena));  in ipalloct()
1106 ipalloc(tsd_t *tsd, size_t usize, size_t alignment, bool zero)  in ipalloc()  argument
1109 	return (ipallocztm(tsd_tsdn(tsd), usize, alignment, zero,  in ipalloc()
1204     size_t extra, size_t alignment, bool zero, tcache_t *tcache, arena_t *arena)  in iralloct_realign()  argument
1209 	usize = sa2u(size + extra, alignment);  in iralloct_realign()
1212 	p = ipalloct(tsd_tsdn(tsd), usize, alignment, zero, tcache, arena);  in iralloct_realign()
1217 		usize = sa2u(size, alignment);  in iralloct_realign()
1220 		p = ipalloct(tsd_tsdn(tsd), usize, alignment, zero, tcache,  in iralloct_realign()
1236 iralloct(tsd_t *tsd, void *ptr, size_t oldsize, size_t size, size_t alignment,  in iralloct()  argument
1243 	if (alignment != 0 && ((uintptr_t)ptr & ((uintptr_t)alignment-1))  in iralloct()
1246 		 * Existing object alignment is inadequate; allocate new space  in iralloct()
1249 		return (iralloct_realign(tsd, ptr, oldsize, size, 0, alignment,  in iralloct()
1253 	return (arena_ralloc(tsd, arena, ptr, oldsize, size, alignment, zero,  in iralloct()
1258 iralloc(tsd_t *tsd, void *ptr, size_t oldsize, size_t size, size_t alignment,  in iralloc()  argument
1262 	return (iralloct(tsd, ptr, oldsize, size, alignment, zero,  in iralloc()
1268     size_t alignment, bool zero)  in ixalloc()  argument
1274 	if (alignment != 0 && ((uintptr_t)ptr & ((uintptr_t)alignment-1))  in ixalloc()
1276 		/* Existing object alignment is inadequate. */  in ixalloc()