First Commit

wasm_pthread_worker.js

@@ -0,0 +1,115 @@
+
+import { Worker }  			from 'worker_threads';
+
+import { isMainThread }  	from 'worker_threads'; 
+
+import { parentPort }  		from 'worker_threads'; 
+
+import { workerData }  		from 'worker_threads';
+
+import { URL } 				from 'node:url'; 
+
+import fs 					from 'fs/promises';
+
+import { setupWebAssembly }	from "./shared_pthread.js"
+
+const wasmBuffer 		= await fs.readFile('./binaries/wasm_add_pthread.wasm');
+
+const __filename 		= new URL('', import.meta.url).pathname;
+
+const __dirname 		= new URL('.', import.meta.url).pathname;
+
+const NUM_THREADS 		= 12;
+
+const ARRAY_SIZE 		= 15000576;
+
+
+
+function getTime() {
+
+	const ns 		= process.hrtime.bigint();
+
+	return Number( ns ) / 1e9; // Returns seconds
+
+}
+
+
+if( isMainThread ) {
+	
+	console.log("isMainThread");
+
+	let start;
+
+	var end;
+
+	start = getTime();
+
+	const sharedArrayBufferA 		= new SharedArrayBuffer(ARRAY_SIZE * 4);
+
+	const sharedArrayBufferB 		= new SharedArrayBuffer(ARRAY_SIZE * 4);
+
+	const sharedArrayBufferC 		= new SharedArrayBuffer(ARRAY_SIZE * 4);
+
+	const a 						= new Float32Array(sharedArrayBufferA);
+
+	const b 						= new Float32Array(sharedArrayBufferB);
+
+	const c 						= new Float32Array(sharedArrayBufferC);
+
+	end = getTime();
+	const allocTime = end - start;
+
+	// Time array initialization (single-threaded, like original C)
+	start = getTime();
+
+	for (let i = 0; i < ARRAY_SIZE; i++) {
+		a[i] = i;
+		b[i] = i * 2;
+	}
+
+	end = getTime();
+
+	const initTime 			= end - start;
+
+	const chunkSize 		= Math.floor(ARRAY_SIZE / NUM_THREADS)
+
+	const workerPromises 	= new Array();
+
+		for (let t = 0; t < NUM_THREADS; t++) {
+
+			const workerStart 		= t * chunkSize;
+			const workerEnd 		= (t === NUM_THREADS - 1) ? ARRAY_SIZE : (t + 1) * chunkSize;
+			
+			const workerData		= {
+										start: workerStart,
+										end: workerEnd,
+										sharedArrayBufferA,
+										sharedArrayBufferB,
+										sharedArrayBufferC
+									};
+
+			const worker 			= new Worker( __filename, { workerData: workerData });
+
+
+
+			workerPromises.push(new Promise((resolve, reject) => {
+
+				worker.on('exit', resolve);
+
+				worker.on('error', reject);
+
+
+			}));
+        }
+
+
+} else {
+	
+	console.log("other Threads");
+
+	// here the ?
+
+
+	setupWebAssembly( wasmBuffer, workerData, ARRAY_SIZE, NUM_THREADS );
+
+}