#include "chord_prot.h"#include "fingers_prot.h"#include "accordion_prot.h"#include "transport_prot.h"#include "id_utils.h"#include <ihash.h>struct f_node {  chordID ID;  vec<float> coords;  str host, hostname;  unsigned short port;  unsigned short vnode_num;  chord_nodelistextres *fingers;  chord_nodelistextres *predecessor;  chord_nodelistextres *successors;  ihash_entry <f_node> link;  unsigned int draw;  bool selected;  bool highlight;  f_node (const chord_node &n);  f_node (chordID i, str h, unsigned short p);  void dnslookup (void);    void dnslookup_cb (ptr<hostent> he, int err);  ~f_node ();};struct annotation {  virtual void draw (bool ggeo, GtkWidget *drawing_area) = 0;  virtual ~annotation () = 0;};struct arrow_annotation : public annotation {  int xa, ya, xb, yb;  arrow_annotation (int a, int b, int c, int d)    : xa (a), ya (b), xb (c), yb (d) {};  void draw (bool ggeo, GtkWidget *drawing_area);};struct arc_annotation : public annotation {  chordID id_a, id_b;  arc_annotation (chordID a, chordID b) : id_a (a), id_b (b) {};  void draw (bool ggeo, GtkWidget *drawing_area);};extern vec<ptr<annotation> > annotations;extern bool simulated_input;extern ihash<chordID, f_node, &f_node::ID, &f_node::link, hashID> nodes;void doRPC (f_node *nu, const rpc_program &prog,	    int procno, const void *in, void *out, aclnt_cb cb);void update_fingers (f_node *n);void update_fingers_got_fingers (chordID ID, str host, unsigned short port, 				 chord_nodelistextres *res, clnt_stat err);void update_succlist (f_node *n);void update_succ_got_succ (chordID ID, str host, unsigned short port, 			   chord_nodelistextres *res, clnt_stat err);void update_pred (f_node *n);void update_pred_got_pred (chordID ID, str host, unsigned short port,			   chord_nodelistextres *res, clnt_stat err);f_node *add_node (const chord_node &n);f_node *add_node (str host, unsigned short port);void get_cb (chordID next);void update ();void update (f_node *n);void update_highlighted ();extern short interval; /* How frequently to update */extern GtkWidget *total_nodes; /* A widget to display how many nodes exist */unsigned int check_get_state (void);void check_set_state (unsigned int newstate);void ID_to_xy (chordID ID, int *x, int *y);void draw_ring ();void draw_arrow (int fromx, int fromy, 		 int tox, int toy, GdkGC *draw_gc);void draw_arc (chordID from, chordID to, GdkGC *draw_gc);void draw_nothing_cb (GtkWidget *widget, gpointer data);void setup_cmd (int p);