chore: Use fork when -c is not set

Author: thisalihassan

benchmark/compare.js

@@ -1,6 +1,6 @@
 'use strict';
 
-const { spawn } = require('child_process');
+const { spawn, fork } = require('child_process');
 const { inspect } = require('util');
 const path = require('path');
 const CLI = require('./_cli.js');
@@ -41,7 +41,7 @@ if (benchmarks.length === 0) {
 }
 
 const cpuCoreSetting = cli.optional.set.find(s => s.startsWith('CPUCORE='));
-let cpuCore = '0';
+let cpuCore = null;
 if (cpuCoreSetting) {
   cpuCore = cpuCoreSetting.split('=')[1];
 }
@@ -76,12 +76,23 @@ if (showProgress) {
 (function recursive(i) {
   const job = queue[i];
 
-  const spawnArgs = ['-c', cpuCore, cli.optional[job.binary], path.resolve(__dirname, job.filename), ...cli.optional.set];
-  
-  const child = spawn('taskset', spawnArgs, {
-    env: process.env,
-    stdio: ['inherit', 'pipe', 'inherit', 'ipc'],
-  });
+  const resolvedPath = path.resolve(__dirname, job.filename);
+  let child;
+  if (cpuCore !== null) {
+    const spawnArgs = ['-c', cpuCore, cli.optional[job.binary], resolvedPath, ...cli.optional.set];
+    child = spawn('taskset', spawnArgs, {
+      env: process.env,
+      stdio: ['inherit', 'pipe', 'ipc'],
+    });
+
+    child.stdout.on('data', (data) => {
+      process.stdout.write(data);
+    });
+  } else {
+    child = fork(resolvedPath, cli.optional.set, {
+      execPath: cli.optional[job.binary],
+    });
+  }
 
   child.on('message', (data) => {
     if (data.type === 'report') {

benchmark/run.js

@@ -50,7 +50,7 @@ if (format === 'csv') {
   const args = cli.test ? ['--test'] : cli.optional.set;
 
   const child = spawn('taskset', [`-c`, cpuCore, `node`, scriptPath, ...args], {
-    stdio: ['inherit', 'pipe', 'inherit', 'ipc']
+    stdio: ['inherit', 'pipe', 'ipc']
   });
 
 
@@ -82,6 +82,10 @@ if (format === 'csv') {
     }
   });
 
+  child.stdout.on('data', (data) => {
+    process.stdout.write(data);
+  });
+
   child.once('close', (code) => {
     if (code) {
       process.exit(code);