Method internalComputeIfAbsent has 123 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private final Object internalComputeIfAbsent(K k,
                                                 Fun<? super K, ?> mf) {
        int h = spread(k.hashCode());
        Object val = null;
        int count = 0;

Method getTreeNode has a Cognitive Complexity of 32 (exceeds 5 allowed). Consider refactoring.

Open

        @SuppressWarnings("unchecked") final TreeNode getTreeNode
        (int h, RubyObject k, TreeNode p) {
            RubyClass c = k.getMetaClass(); boolean kNotComparable = !k.respondsTo("<=>");
            while (p != null) {
                int dir, ph;  RubyObject pk; RubyClass pc;

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Method getTreeNode has a Cognitive Complexity of 32 (exceeds 5 allowed). Consider refactoring.

Open

        @SuppressWarnings("unchecked") final TreeNode getTreeNode
        (int h, RubyObject k, TreeNode p) {
            RubyClass c = k.getMetaClass(); boolean kNotComparable = !k.respondsTo("<=>");
            while (p != null) {
                int dir, ph;  RubyObject pk; RubyClass pc;

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Class Channel has 36 methods (exceeds 20 allowed). Consider refactoring.

Open

    class Channel < Concurrent::Synchronization::Object

      # TODO (pitr-ch 06-Jan-2019): rename to Conduit?, to be able to place it into Concurrent namespace?
      # TODO (pitr-ch 14-Jan-2019): better documentation, do few examples from go
      # TODO (pitr-ch 12-Dec-2018): implement channel closing,

Method ns_pop_op has a Cognitive Complexity of 29 (exceeds 5 allowed). Consider refactoring.

Open

      def ns_pop_op(matcher, probe, include_channel)
        message = ns_shift_message matcher

        # got message from buffer
        if message != NOTHING

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Class Channel has 33 methods (exceeds 20 allowed). Consider refactoring.

Open

  class Channel
    extend Forwardable
    include Enumerable

    # NOTE: Move to global IO pool once stable

Method internalMerge has 103 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    @SuppressWarnings("unchecked") private final Object internalMerge
    (K k, V v, BiFun<? super V, ? super V, ? extends V> mf) {
        int h = spread(k.hashCode());
        Object val = null;
        int delta = 0;

Method internalMerge has 103 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    @SuppressWarnings("unchecked") private final Object internalMerge
    (K k, V v, BiFun<? super V, ? super V, ? extends V> mf) {
        int h = spread(k.hashCode());
        Object val = null;
        int delta = 0;

Method single_test has a Cognitive Complexity of 28 (exceeds 5 allowed). Consider refactoring.

Open

def single_test(lock, n_readers, n_writers, reader_iterations=50, writer_iterations=50, reader_sleep=0.001, writer_sleep=0.001)
  puts "Testing #{lock.class} with #{n_readers} readers and #{n_writers} writers. Readers iterate #{reader_iterations} times, sleeping #{reader_sleep}s each time, writers iterate #{writer_iterations} times, sleeping #{writer_sleep}s each time"
  mutex = Mutex.new
  bad   = false
  data  = 0

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Class AbstractEventFuture has 32 methods (exceeds 20 allowed). Consider refactoring.

Open

    class AbstractEventFuture < Synchronization::Object
      safe_initialization!
      attr_atomic(:internal_state)
      private :internal_state=, :swap_internal_state, :compare_and_set_internal_state, :update_internal_state
      # @!method internal_state

Method internalPutAll has 99 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private final void internalPutAll(Map<?, ?> m) {
        tryPresize(m.size());
        long delta = 0L;     // number of uncommitted additions
        boolean npe = false; // to throw exception on exit for nulls
        try {                // to clean up counts on other exceptions

Method internalPutAll has 99 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private final void internalPutAll(Map<?, ?> m) {
        tryPresize(m.size());
        long delta = 0L;     // number of uncommitted additions
        boolean npe = false; // to throw exception on exit for nulls
        try {                // to clean up counts on other exceptions

Method acquire_read_lock has a Cognitive Complexity of 27 (exceeds 5 allowed). Consider refactoring.

Open

    def acquire_read_lock
      if (held = @HeldCount.value) > 0
        # If we already have a lock, there's no need to wait
        if held & READ_LOCK_MASK == 0
          # But we do need to update the counter, if we were holding a write

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Method internalPutIfAbsent has 97 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private final Object internalPutIfAbsent(Object k, Object v) {
        int h = spread(k.hashCode());
        int count = 0;
        for (Node[] tab = table;;) {
            int i; Node f; int fh; Object fk, fv;

Method internalPutIfAbsent has 97 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private final Object internalPutIfAbsent(Object k, Object v) {
        int h = spread(k.hashCode());
        int count = 0;
        for (AtomicReferenceArray<Node> tab = table;;) {
            int i; Node f; int fh; Object fk, fv;

Method rebuild has 94 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private static final AtomicReferenceArray<Node> rebuild(AtomicReferenceArray<Node> tab) {
        int n = tab.length();
        AtomicReferenceArray<Node> nextTab = new AtomicReferenceArray<Node>(n << 1);
        Node fwd = new Node(MOVED, nextTab, null, null);
        int[] buffer = null;       // holds bins to revisit; null until needed

Method rebuild has 94 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private static final Node[] rebuild(Node[] tab) {
        int n = tab.length;
        Node[] nextTab = new Node[n << 1];
        Node fwd = new Node(MOVED, nextTab, null, null);
        int[] buffer = null;       // holds bins to revisit; null until needed

Method signature_types has a Cognitive Complexity of 26 (exceeds 5 allowed). Consider refactoring.

Open

      def signature_types(meth, link = true)
        meth = convert_method_to_overload(meth)
        if meth.respond_to?(:object) && !meth.has_tag?(:return)
          meth = meth.object
        end

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Method do_exchange has a Cognitive Complexity of 26 (exceeds 5 allowed). Consider refactoring.

Open

    def do_exchange(value, timeout)

      # ALGORITHM
      #
      # From the original Java version:

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Method putTreeNode has 93 lines of code (exceeds 25 allowed). Consider refactoring.

Open

        @SuppressWarnings("unchecked") final TreeNode putTreeNode
        (int h, RubyObject k, Object v) {
            RubyClass c = k.getMetaClass();
            boolean kNotComparable = !k.respondsTo("<=>");
            TreeNode pp = root, p = null;