static void toggle_congestion (void (*drawscreen_ptr) (void)) {
/* Turns the congestion display on and off. */
char msg[BUFSIZE];
int inode, num_congested;
show_nets = FALSE;
draw_rr_toggle = DRAW_NO_RR;
show_congestion = !show_congestion;
if (!show_congestion) {
update_message (default_message);
}
else {
num_congested = 0;
for (inode=0;inode<num_rr_nodes;inode++) {
if (rr_node[inode].occ > rr_node[inode].capacity)
num_congested++;
}
sprintf (msg, "%d routing resources are overused.", num_congested);
update_message (msg);
}
drawscreen_ptr ();
}
static void toggle_nets (void (*drawscreen_ptr) (void)) {
/* Enables/disables drawing of nets when a the user clicks on a button. *
* Also disables drawing of routing resources. See graphics.c for details *
* of how buttons work. */
show_nets = !show_nets;
draw_rr_toggle = DRAW_NO_RR;
show_congestion = FALSE;
update_message (default_message);
drawscreen_ptr ();
}
static void toggle_rr (void (*drawscreen_ptr) (void)) {
/* Cycles through the options for viewing the routing resources available *
* in an FPGA. If a routing isn't on screen, the routing graph hasn't been *
* built, and this routine doesn't switch the view. Otherwise, this routine *
* switches to the routing resource view. Clicking on the toggle cycles *
* through the options: DRAW_NO_RR, DRAW_ALL_RR, DRAW_ALL_BUT_BUFFERS_RR, *
* DRAW_NODES_AND_SBOX_RR, and DRAW_NODES_RR. */
draw_rr_toggle = (draw_rr_toggle + 1) % (DRAW_NODES_RR + 1);
show_nets = FALSE;
show_congestion = FALSE;
update_message (default_message);
drawscreen_ptr ();
}
void act_on_toggle_nets_button (void (*drawscreen_ptr) (void)) {
show_nets = (show_nets) ? false : true;
// Re-draw the screen (a few squares are changing colour with time)
drawscreen_ptr();
}
static void highlight_crit_path (void (*drawscreen_ptr) (void)) {
/* Highlights all the blocks and nets on the critical path. */
t_linked_int *critical_path_head, *critical_path_node;
int inode, iblk, inet, num_nets_seen;
static int nets_to_highlight = 1;
char msg[BUFSIZE];
if (nets_to_highlight == 0) { /* Clear the display of all highlighting. */
nets_to_highlight = 1;
deselect_all ();
update_message (default_message);
drawscreen_ptr ();
return;
}
critical_path_head = allocate_and_load_critical_path ();
critical_path_node = critical_path_head;
num_nets_seen = 0;
while (critical_path_node != NULL) {
inode = critical_path_node->data;
get_tnode_block_and_output_net (inode, &iblk, &inet);
if (num_nets_seen == nets_to_highlight) /* Last block */
block_color[iblk] = MAGENTA;
else if (num_nets_seen == nets_to_highlight - 1) /* 2nd last block */
block_color[iblk] = YELLOW;
else if (num_nets_seen < nets_to_highlight) /* Earlier block */
block_color[iblk] = DARKGREEN;
if (inet != OPEN) {
num_nets_seen++;
if (num_nets_seen < nets_to_highlight) /* First nets. */
net_color[inet] = DARKGREEN;
else if (num_nets_seen == nets_to_highlight)
net_color[inet] = CYAN; /* Last (new) net. */
}
critical_path_node = critical_path_node->next;
}
if (nets_to_highlight == num_nets_seen) {
nets_to_highlight = 0;
sprintf (msg, "All %d nets on the critical path highlighted.",
num_nets_seen);
}
else {
sprintf (msg, "First %d nets on the critical path highlighted.",
nets_to_highlight);
nets_to_highlight++;
}
free_int_list (&critical_path_head);
update_message (msg);
drawscreen_ptr ();
}