update

package.json

@@ -20,8 +20,7 @@
     "karma-jasmine": "^5.0.0",
     "watchify": "^4.0.0",
     "webpack": "^5.72.0",
-    "webpack-cli": "^4.9.2",
-    "worker-loader": "^3.0.8"
+    "webpack-cli": "^4.9.2"
   },
   "scripts": {
     "test": "karma start"

src/encGroup.js

@@ -42,13 +42,16 @@ export class Channel {
    * 2.Read Position
    *
    * Figure:
-   *  ------------------------------------------------------------------------
-   * | ReadPointer (4 bytes) | WritePointer (4 Bytes) | Data Area (N bytes)  |
-   * -------------------------------------------------------------------------
+   *  --------------------------------------------------------------------------------------------
+   * | ReadPointer (4 bytes) | WritePointer (4 Bytes) | Private (4 Bytes) | Data Area (N bytes)  |
+   * --------------------------------------------------------------------------------------------
    * where N >= 2
    *
    * */
-  #numOfMetaField = 2
+  #rFieldPosLen = 4;
+  #wFieldPosLen = 4;
+  #priFieldLen  = 4;
+  #numOfMetaField = 3
   #fieldSize = 0;
 
   #metaSize = 0;
@@ -73,9 +76,8 @@ export class Channel {
     this.#WW = WW;
     this.#size = size;
 
-    // 4 Bytes
-    this.#fieldSize = 4;
-    this.#metaSize = this.#numOfMetaField * this.#fieldSize;
+    // Init shared memory
+    this.#metaSize = this.#rFieldPosLen + this.#wFieldPosLen + this.#priFieldLen;
     this.#shMem = new bufferType(size + this.#metaSize);
     this.#view = new DataView(this.#shMem);
     this.#buffer = new Uint8Array(this.#shMem);
@@ -84,6 +86,8 @@ export class Channel {
     this.#totalSize = this.#metaSize + this.#size;
     this.#endPos = this.#metaSize + this.#size;
 
+    // Init readPointer and writePointer to
+    // the first bytes of data area.
     this.#view.setUint32(0, this.#metaSize);
     this.#view.setUint32(4, this.#metaSize);
   }
@@ -92,6 +96,27 @@ export class Channel {
     return this.#view.getUint32(0);
   }
 
+  readPriv() {
+    return [
+      this.#view.getUint8(8),
+      this.#view.getUint8(9),
+      this.#view.getUint8(10),
+      this.#view.getUint8(11),
+    ];
+  }
+
+  writePriv(privData) {
+    if (!(privData instanceof Array) ||
+        privData.length > this.#priFieldLen) {
+      throw new Error("Invalid Private datas");
+    }
+
+    for (let i = 8; i < 12; ++i) {
+      this.#view.setUint8(i);
+    }
+
+  }
+
   /* Semantic: Is able to write 'size' of datas
    * into #shMem. */
   #isAbleToWrite(size) {

tests/WW.spec.js

 import { WW } from '../src/WW.js';
-
+import '../src/res.js';
 
 // For Webpack 5
 let url = new URL('../resources/worker.js', import.meta.url);

webpack.tdd.conf.js

@@ -14,9 +14,10 @@ module.exports = {
       {
         test: /\.(js|jsx)$/,
         exclude: /node_modules/,
-        use: {
-          loader: "babel-loader"
-        }
+        use: ['babel-loader']
+      },
+      {
+
       }
     ]
   },