39 static Block_t* vmextend(reg Vmalloc_t* vm, size_t size, Vmsearch_f searchf )  in vmextend()  argument
41 static Block_t* vmextend(vm, size, searchf )  in vmextend()
43 size_t		size;		/* desired amount of space	*/
66 	s = size + sizeof(Seg_t) + sizeof(Block_t) + sizeof(Head_t) + 2*ALIGN;
67 	if(s <= size)	/* size was too large and we have wrapped around */
69 	if((size = ROUND(s,vd->incr)) < s)
73 	if(size > 2*vd->incr && vm->disc->round < vd->incr)
84 			if((s = (s/vd->incr)*vd->incr) == size)
85 				size += vd->incr;
88 					  seg->extent+size-s,vm->disc);
94 			size -= s;
99 	{	if((addr = (Vmuchar_t*)(*memoryf)(vm,NIL(Void_t*),0,size,vm->disc)) )
109 			rv = (*exceptf)(vm,VM_NOMEM,(Void_t*)size,vm->disc);
127 				SIZE(bp) = size - sizeof(Head_t);
134 				SIZE(bp) += size;
141 				SIZE(bp) += size;
145 				SIZE(bp) = size - sizeof(Head_t);
149 		seg->size += size;
150 		seg->extent += size;
151 		seg->baddr += size;
163 		seg->extent = size;
164 		seg->baddr = addr + size - (s ? 2*ALIGN : 0);
185 		seg->size = SIZE(bp);
211 static ssize_t vmtruncate(Vmalloc_t* vm, Seg_t* seg, size_t size, int exact)  in vmtruncate()  argument
213 static ssize_t vmtruncate(vm, seg, size, exact)  in vmtruncate()
216 size_t		size;	/* amount of free space		*/
227 	if(size < seg->size)
231 			less = size;
235 			less = (size/less)*less;
237 			if(less > 0 && size > (size_t)less && (size-(size_t)less) < sizeof(Block_t) )
246 		seg->size -= less;
267 			return size;