#include <semaphore.h> // POSIX semaphores!
#include "list.hpp"    // list implementation
#include "globals.hpp" // lists, sems, muts
#include "consumer.hpp"

int consume(block* c);

void *consumer (void *) {
   block *c;
   while (true) {
      // wait for element on list2
      wait(sem_list2);
      // mutual exclusion for list2
      wait(mut_list2);
      //* c:=unlink(list-2);
      c = unlink(list2);
      // mutual exclusion for list2
      signal(mut_list2);

      //* consume_information_in_block(c)
      consume(c);

      // mutual exclusion for freelist
      wait(mut_freelist);
      //* link(c, freelist)
      link(c, freelist);
      // mutual exclusion for freelist
      signal(mut_freelist);
      // signal thread-1 to continue
      signal(sem_freelist_minus_1);
      // signal new element on freelist
      signal(sem_freelist);
   }
   return nullptr;
}

int consume(block *c) {
   return 0;
}