NativeArrays Class — netty Architecture

Source Code

transport-classes-epoll/src/main/java/io/netty/channel/epoll/NativeArrays.java lines 20–61

final class NativeArrays {

    // These are initialized on first use
    private IovArray iovArray;
    private NativeDatagramPacketArray datagramPacketArray;

    /**
     * Return a cleared {@link IovArray} that can be used for writes.
     */
    IovArray cleanIovArray() {
        if (iovArray == null) {
            iovArray = new IovArray();
        } else {
            iovArray.clear();
        }
        return iovArray;
    }

    /**
     * Return a cleared {@link NativeDatagramPacketArray} that can be used for writes.
     */
    NativeDatagramPacketArray cleanDatagramPacketArray() {
        if (datagramPacketArray == null) {
            datagramPacketArray = new NativeDatagramPacketArray();
        } else {
            datagramPacketArray.clear();
        }
        return datagramPacketArray;
    }

    void free() {
        // release native memory
        if (iovArray != null) {
            iovArray.release();
            iovArray = null;
        }
        if (datagramPacketArray != null) {
            datagramPacketArray.release();
            datagramPacketArray = null;
        }
    }
}