Class BufferRecycler


  • public final class BufferRecycler
    extends java.lang.Object
    This is a small utility class, whose main functionality is to allow simple reuse of raw byte/char buffers. It is usually used through ThreadLocal member of the owning class pointing to instance of this class through a SoftReference. The end result is a low-overhead GC-cleanable recycling: hopefully ideal for use by stream readers.

    Regarding implementation: the key design goal is simplicity; and to that end, different types of buffers are handled separately. While code may look inelegant as a result (would be cleaner to just have generic char[]/byte[] buffer accessors), benefit is that no data structures are needed, just simple references. As long as usage pattern is well known (which it is, for stream readers) this should be highly optimal and robust implementation.

    • Field Detail

      • mSmallCBuffer

        private volatile char[] mSmallCBuffer
      • mMediumCBuffer

        private volatile char[] mMediumCBuffer
      • mFullCBuffer

        private volatile char[] mFullCBuffer
      • mFullBBuffer

        private volatile byte[] mFullBBuffer
    • Constructor Detail

      • BufferRecycler

        public BufferRecycler()
    • Method Detail

      • getSmallCBuffer

        public char[] getSmallCBuffer​(int minSize)
      • returnSmallCBuffer

        public void returnSmallCBuffer​(char[] buffer)
      • getMediumCBuffer

        public char[] getMediumCBuffer​(int minSize)
      • returnMediumCBuffer

        public void returnMediumCBuffer​(char[] buffer)
      • getFullCBuffer

        public char[] getFullCBuffer​(int minSize)
      • returnFullCBuffer

        public void returnFullCBuffer​(char[] buffer)
      • getFullBBuffer

        public byte[] getFullBBuffer​(int minSize)
      • returnFullBBuffer

        public void returnFullBBuffer​(byte[] buffer)