When I study the rbtree of nginx I can't understand the comments. Can
someone give me a concrete example?Thanks :)

for ( ;; ) {

/*
* Timer values
* 1) are spread in small range, usually several minutes,
* 2) and overflow each 49 days, if milliseconds are stored in 32
bits.
* The comparison takes into account that overflow.
*/

/* node->key < temp->key */

p = ((ngx_rbtree_key_int_t) (node->key - temp->key) < 0)
? &temp->left : &temp->right;

if (*p == sentinel) {
break;
}

temp = *p;
}
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