625    XPt* xpt    = perm_malloc(sizeof(XPt));  in new_XPt()  local
626    xpt->ip     = ip;  in new_XPt()
627    xpt->szB    = 0;  in new_XPt()
628    xpt->parent = parent;  in new_XPt()
633    xpt->n_children   = 0;  in new_XPt()
634    xpt->max_children = 0;  in new_XPt()
635    xpt->children     = NULL;  in new_XPt()
640    return xpt;  in new_XPt()
681 static SXPt* dup_XTree(XPt* xpt, SizeT total_szB)  in dup_XTree()  argument
710    for (i = 0; i < xpt->n_children; i++) {  in dup_XTree()
711       if (xpt->children[i]->szB >= sig_child_threshold_szB) {  in dup_XTree()
715    n_insig_children = xpt->n_children - n_sig_children;  in dup_XTree()
722    sxpt->szB            = xpt->szB;  in dup_XTree()
723    sxpt->Sig.ip         = xpt->ip;  in dup_XTree()
736       for (i = 0; i < xpt->n_children; i++) {  in dup_XTree()
737          if (xpt->children[i]->szB >= sig_child_threshold_szB) {  in dup_XTree()
738             sxpt->Sig.children[j++] = dup_XTree(xpt->children[i], total_szB);  in dup_XTree()
739             sig_children_szB   += xpt->children[i]->szB;  in dup_XTree()
741             insig_children_szB += xpt->children[i]->szB;  in dup_XTree()
792 static void sanity_check_XTree(XPt* xpt, XPt* parent)  in sanity_check_XTree()  argument
794    tl_assert(xpt != NULL);  in sanity_check_XTree()
797    tl_assert2(xpt->parent == parent,  in sanity_check_XTree()
798       "xpt->parent = %p, parent = %p\n", xpt->parent, parent);  in sanity_check_XTree()
801    tl_assert(xpt->n_children <= xpt->max_children);  in sanity_check_XTree()
939    XPt* xpt = alloc_xpt;  in get_XCon()  local
959          if (ch == xpt->n_children) {  in get_XCon()
962             XPt* new_child_xpt = new_XPt(ip, xpt);  in get_XCon()
963             add_child_xpt(xpt, new_child_xpt);  in get_XCon()
964             xpt = new_child_xpt;  in get_XCon()
967          } else if (ip == xpt->children[ch]->ip) {  in get_XCon()
969             xpt = xpt->children[ch];  in get_XCon()
998    if (0 != xpt->n_children) {  in get_XCon()
1013    return xpt;  in get_XCon()
1017 static void update_XCon(XPt* xpt, SSizeT space_delta)  in update_XCon()  argument
1020    tl_assert(NULL != xpt);  in update_XCon()
1025    while (xpt != alloc_xpt) {  in update_XCon()
1026       if (space_delta < 0) tl_assert(xpt->szB >= -space_delta);  in update_XCon()
1027       xpt->szB += space_delta;  in update_XCon()
1028       xpt = xpt->parent;  in update_XCon()