doq_timer_cmp
table->timer_tree = rbtree_create(doq_timer_cmp);
int doq_timer_cmp(const void* key1, const void* key2);
else if(fptr == &doq_timer_cmp) return 1;
table->timer_tree = rbtree_create(doq_timer_cmp);
int doq_timer_cmp(const void* key1, const void* key2);
else if(fptr == &doq_timer_cmp) return 1;