public ConcurrentReferenceHashMap()

in ttl-core/src/main/java/com/alibaba/ttl3/internal/util/ConcurrentReferenceHashMap.java [193:212]

• 19 lines of code
• 2 McCabe index (conditional complexity)

    public ConcurrentReferenceHashMap(
            int initialCapacity, float loadFactor, int concurrencyLevel, ReferenceType referenceType) {

        Assert.isTrue(initialCapacity >= 0, "Initial capacity must not be negative");
        Assert.isTrue(loadFactor > 0f, "Load factor must be positive");
        Assert.isTrue(concurrencyLevel > 0, "Concurrency level must be positive");
        Assert.notNull(referenceType, "Reference type must not be null");
        this.loadFactor = loadFactor;
        this.shift = calculateShift(concurrencyLevel, MAXIMUM_CONCURRENCY_LEVEL);
        int size = 1 << this.shift;
        this.referenceType = referenceType;
        int roundedUpSegmentCapacity = (int) ((initialCapacity + size - 1L) / size);
        int initialSize = 1 << calculateShift(roundedUpSegmentCapacity, MAXIMUM_SEGMENT_SIZE);
        Segment[] segments = (Segment[]) Array.newInstance(Segment.class, size);
        int resizeThreshold = (int) (initialSize * getLoadFactor());
        for (int i = 0; i < segments.length; i++) {
            segments[i] = new Segment(initialSize, resizeThreshold);
        }
        this.segments = segments;
    }