jigewxy · February 9, 2018 09:54 · Feb 9, 2018
diff --git a/child.js b/child.js
@@ -0,0 +1,19 @@
+
+var count =Math.floor(Math.random()*100);
+
+process.on('message', (msg)=>{
+
+  console.log("CHILD: message received from parent process", msg);
+
+  count = parseInt(msg) +1;
+  console.log("CHILD: +1 from child");
+
+  if(count<=100)
+    process.send(count);
+  else
+    process.exit(1);
+
+});
+
+console.log(count);
+process.send(count);
diff --git a/index.js b/index.js
@@ -0,0 +1,52 @@
+
+
+/** spawn example # spawn will not create new V8 instance, it will create a system process*/ 
+
+/*
+const spawn = require('child_process').spawn;
+
+const ls = spawn("cmd", ['/c', '..']);
+
+ls.stdout.on('data', (data)=>{
+
+	console.log(process.pid);
+	console.log(`stdout: ${data}`);	
+
+});
+
+ls.stderr.on('data', (data)=>{
+
+	console.log(`stderr: ${data}`);
+
+});
+
+ls.on('message', (msg)=>{
+
+ console.log(`message from child process is ${msg}`);
+
+}); */
+
+const fork = require('child_process').fork;
+
+const ls = fork("../child/child.js");
+
+
+var count =0;
+
+ls.on('exit', (code)=>{
+
+
+	console.log(`child_process exited with code ${code}`);
+
+});
+
+ls.on('message', (msg)=>{
+
+	 console.log(`PARENT: message from child process is ${msg}`);
+
+	 count = parseInt(msg) + 1;
+	 console.log("PARENT: +1 from parent");
+
+	 ls.send(count);
+
+});
No results found