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Method toArray has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring.
Open

        @SuppressWarnings("unchecked") public final <T> T[] toArray(T[] a) {
            long sz = map.mappingCount();
            if (sz > (long)(MAX_ARRAY_SIZE))
                throw new OutOfMemoryError(oomeMsg);
            int m = (int)sz;
Severity: Minor
Found in ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method toArray has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring.
Open

        @SuppressWarnings("unchecked") public final <T> T[] toArray(T[] a) {
            long sz = map.mappingCount();
            if (sz > (long)(MAX_ARRAY_SIZE))
                throw new OutOfMemoryError(oomeMsg);
            int m = (int)sz;
Severity: Minor
Found in ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method compute_if_absent has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring.
Open

    def compute_if_absent(key)
      hash          = key_hash(key)
      current_table = table || initialize_table
      while true
        if !(node = current_table.volatile_get(i = current_table.hash_to_index(hash)))
Severity: Minor
Found in lib/thread_safe/atomic_reference_cache_backend.rb - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Identical blocks of code found in 4 locations. Consider refactoring.
Open

                if (g != null) {
                    for (Node e = g;;) {
                        Object ek, ev;
                        if ((e.hash & HASH_BITS) == h && (ev = e.val) != null &&
                                ((ek = e.key) == k || k.equals(ek)))
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java and 3 other locations - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 1511..1522
ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 1503..1514
ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 1626..1637

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 114.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 4 locations. Consider refactoring.
Open

                if (g != null) { // at least 2 nodes -- search and maybe resize
                    for (Node e = g;;) {
                        Object ek, ev;
                        if ((e.hash & HASH_BITS) == h && (ev = e.val) != null &&
                                ((ek = e.key) == k || k.equals(ek)))
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java and 3 other locations - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 1511..1522
ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 1634..1645
ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 1626..1637

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 114.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 4 locations. Consider refactoring.
Open

                if (g != null) { // at least 2 nodes -- search and maybe resize
                    for (Node e = g;;) {
                        Object ek, ev;
                        if ((e.hash & HASH_BITS) == h && (ev = e.val) != null &&
                                ((ek = e.key) == k || k.equals(ek)))
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java and 3 other locations - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 1634..1645
ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 1503..1514
ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 1626..1637

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 114.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 4 locations. Consider refactoring.
Open

                if (g != null) {
                    for (Node e = g;;) {
                        Object ek, ev;
                        if ((e.hash & HASH_BITS) == h && (ev = e.val) != null &&
                                ((ek = e.key) == k || k.equals(ek)))
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java and 3 other locations - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 1511..1522
ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 1634..1645
ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 1503..1514

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 114.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

    @SuppressWarnings("serial") static final class ValueIterator<K,V> extends Traverser<K,V,Object>
            implements Spliterator<V>, Enumeration<V> {
        ValueIterator(ConcurrentHashMapV8<K, V> map) { super(map); }
        ValueIterator(Traverser<K,V,Object> it) {
            super(it);
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 3245..3266

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 111.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

    @SuppressWarnings("serial") static final class ValueIterator<K,V> extends Traverser<K,V,Object>
            implements Spliterator<V>, Enumeration<V> {
        ValueIterator(ConcurrentHashMapV8<K, V> map) { super(map); }
        ValueIterator(Traverser<K,V,Object> it) {
            super(it);
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 3237..3258

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 111.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

        for (Node e = t.first; e != null; e = e.next) {
            int h = e.hash & HASH_BITS;
            Object k = e.key, v = e.val;
            if ((h & bit) == 0) {
                ++lc;
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 2287..2298

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 110.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

        for (Node e = t.first; e != null; e = e.next) {
            int h = e.hash & HASH_BITS;
            Object k = e.key, v = e.val;
            if ((h & bit) == 0) {
                ++lc;
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 2279..2290

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 110.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

    private static final int tableSizeFor(int c) {
        int n = c - 1;
        n |= n >>> 1;
        n |= n >>> 2;
        n |= n >>> 4;
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 2047..2055

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 108.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

    private static final int tableSizeFor(int c) {
        int n = c - 1;
        n |= n >>> 1;
        n |= n >>> 2;
        n |= n >>> 4;
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 2039..2047

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 108.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

    public static final class ValuesView<K,V> extends CHMView<K,V>
            implements Collection<V> {
        ValuesView(ConcurrentHashMapV8<K, V> map)   { super(map); }
        public final boolean contains(Object o) { return map.containsValue(o); }
        public final boolean remove(Object o) {
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 3710..3746

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 107.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

    public static final class ValuesView<K,V> extends CHMView<K,V>
            implements Collection<V> {
        ValuesView(ConcurrentHashMapV8<K, V> map)   { super(map); }
        public final boolean contains(Object o) { return map.containsValue(o); }
        public final boolean remove(Object o) {
Severity: Major
Found in ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 3702..3738

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 107.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method rebuild has 40 lines of code (exceeds 25 allowed). Consider refactoring.
Open

    def rebuild(table)
      old_table_size = table.size
      new_table      = table.next_in_size_table
      # puts "#{old_table_size} -> #{new_table.size}"
      forwarder      = Node.new(MOVED, new_table, NULL)
Severity: Minor
Found in lib/thread_safe/atomic_reference_cache_backend.rb - About 1 hr to fix

    Method internal_replace has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.
    Open

        def internal_replace(key, expected_old_value = NULL, &block)
      hash          = key_hash(key)
      current_table = table
      while current_table
        if !(node = current_table.volatile_get(i = current_table.hash_to_index(hash)))
    Severity: Minor
    Found in lib/thread_safe/atomic_reference_cache_backend.rb - About 1 hr to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Identical blocks of code found in 2 locations. Consider refactoring.
    Open

                            while (p != null) {
                            int j = p.hash & mask;
                            Node next = p.next;
                            Node q = p.next = tabAt(tab, j);
                            setTabAt(tab, j, p);
    Severity: Major
    Found in ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
    ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java on lines 3417..3425

    Duplicated Code

    Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

    Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

    When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

    Tuning

    This issue has a mass of 104.

    We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

    The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

    If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

    See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

    Refactorings

    Further Reading

    Identical blocks of code found in 2 locations. Consider refactoring.
    Open

                            while (p != null) {
                            int j = p.hash & mask;
                            Node next = p.next;
                            Node q = p.next = tabAt(tab, j);
                            setTabAt(tab, j, p);
    Severity: Major
    Found in ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
    ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 3409..3417

    Duplicated Code

    Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

    Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

    When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

    Tuning

    This issue has a mass of 104.

    We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

    The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

    If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

    See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

    Refactorings

    Further Reading

    Identical blocks of code found in 2 locations. Consider refactoring.
    Open

        @SuppressWarnings("serial") static final class KeyIterator<K,V> extends Traverser<K,V,Object>
            implements Spliterator<K>, Enumeration<K> {
        KeyIterator(ConcurrentHashMapV8<K, V> map) { super(map); }
        KeyIterator(Traverser<K,V,Object> it) {
            super(it);
    Severity: Major
    Found in ext/org/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8.java and 1 other location - About 1 hr to fix
    ext/org/jruby/ext/thread_safe/jsr166e/nounsafe/ConcurrentHashMapV8.java on lines 3215..3235

    Duplicated Code

    Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

    Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

    When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

    Tuning

    This issue has a mass of 101.

    We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

    The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

    If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

    See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

    Refactorings

    Further Reading

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