Request for review: 8016302: Change type of the number of GC workers to unsigned int (2)

[Vladimir Kempik]

Hi all,

Could I have a couple of reviews for this change?

http://cr.openjdk.java.net/~vkempik/8016302/webrev.04/

In 7121618 variables representing GC workers (worker id, worker id 
offset) have been changed from int to unsigned int.

Since then, code reintroduced the use of int's for this type of 
variable; fixing this by aligning the code to use uints for ints.

Since last september the fix was updated for jdk9 and size_t was 
replaced with uint in
dirtyCardQueue.hpp,

   54 bool apply_closure(CardTableEntryClosure* cl,
   55                      bool consume = true,
   56                      size_t worker_i = 0);

   99   // The number of parallel ids that can be claimed to allow
collector or
  100   // mutator threads to do card-processing work.
  101   static size_t num_par_ids();

Thanks,
Vladimir