116 static struct header arena[4] = {
130 static struct header *arenaend;	/* ptr to block marking high end of arena */
131 static struct header *lastblk;	/* the highest block in the arena */
155 	register struct header *p;  in checkq()
201 	struct header *hd;  in memalign()
281 	hd = (struct header *)((char *)fr - minhead);  in memalign()
283 	hd->nextblk = ((struct header *)((char *)alloc_buf - minhead))->nextblk;  in memalign()
284 	((struct header *)((char *)alloc_buf - minhead))->nextblk = SETBUSY(hd);  in memalign()
311 	struct header *blk;  in malloc_unlocked()
317 		arena[1].nextblk = (struct header *)BUSY;  in malloc_unlocked()
318 		arena[0].nextblk = (struct header *)BUSY;  in malloc_unlocked()
397 				    CLRSMAL(lblk->header.nextfree)) ==  in malloc_unlocked()
415 			lblk->header.holder = (struct holdblk *)SETALL(holdblk);  in malloc_unlocked()
437 			lblk->header.holder = (struct holdblk *)SETALL(newhold);  in malloc_unlocked()
441 		assert(((struct holdblk *)CLRALL(lblk->header.holder))->blksz >=  in malloc_unlocked()
449 		struct header *newblk;	/* used for creating a block */  in malloc_unlocked()
469 			struct header *next;		/* following block */  in malloc_unlocked()
470 			struct header *nextnext;	/* block after next */  in malloc_unlocked()
501 			struct header *newend;	/* new end of arena */  in malloc_unlocked()
513 			if ((newblk = (struct header *)sbrk(0)) !=  in malloc_unlocked()
514 			    (struct header *)((char *)arenaend + HEADSZ)) {  in malloc_unlocked()
530 				newend = (struct header *)((char *)newblk + nget  in malloc_unlocked()
561 				    (struct header *)((char *)arenaend+nget);  in malloc_unlocked()
581 				newend = (struct header *)  in malloc_unlocked()
590 			struct header *nblk;	/* next block */  in malloc_unlocked()
607 			newblk = (struct header *)((char *)blk + nb);  in malloc_unlocked()
660 	if (TESTSMAL(((struct header *)((char *)ptr - MINHEAD))->nextblk)) {  in free_unlocked()
665 		assert((struct header *)lblk < arenaend);  in free_unlocked()
666 		assert((struct header *)lblk > arena);  in free_unlocked()
668 		holdblk = lblk->header.holder;  in free_unlocked()
673 		lblk->header.nextfree = SETSMAL(holdblk->lfreeq);  in free_unlocked()
690 		struct header *blk;	/* real start of block */  in free_unlocked()
691 		struct header *next;	/* next = blk->nextblk */  in free_unlocked()
692 		struct header *nextnext;	/* block after next */  in free_unlocked()
694 		blk = (struct header *)((char *)ptr - minhead);  in free_unlocked()
739 	struct header *blk;	/* block ptr is contained in */  in realloc_unlocked()
743 	struct header *next;	/* block after blk */  in realloc_unlocked()
754 	    header.holder)) {  in realloc_unlocked()
770 			    CLRALL(lblk->header.holder))->blksz;  in realloc_unlocked()
776 		blk = (struct header *)((char *)ptr - minhead);  in realloc_unlocked()
807 			struct header *newblk;	/* remainder */  in realloc_unlocked()
814 				newblk = (struct header *)((char *)blk +  in realloc_unlocked()
968 	struct header *blk, *next;	/* ptr to ordinary blocks */  in mallinfo()
1058 		lblk = CLRSMAL(lblk->header.nextfree);  in freespace()
1099 	struct header *blk, *prev, *next;	/* ptr to ordinary blocks */  in check_arena()
1109 	blk = (struct header *)CLRALL(blk->nextblk);  in check_arena()
1110 	next = (struct header *)CLRALL(blk->nextblk);  in check_arena()
1115 		assert(((uintptr_t)((struct header *)blk->nextblk) &  in check_arena()
1123 			assert(((uintptr_t)((struct header *)blk->nextfree) &  in check_arena()
1125 			assert(((uintptr_t)((struct header *)blk->prevfree) &  in check_arena()