Update runCode.js

Author: shashankpandey2070

shared/runCode.js

@@ -1,3 +1,5 @@
+// shared/runCode.js   (patched)
+
 import fs from 'fs/promises';
 import { exec as rawExec } from 'child_process';
 import util from 'util';
@@ -7,32 +9,45 @@ export const exec = util.promisify(rawExec);
 export const tempDir = new URL('../tmp/', import.meta.url).pathname;
 await fs.mkdir(tempDir, { recursive: true });
 
+/* ---------- ONE helper that injects /usr/bin/time ---------- */
+const timer = '/usr/bin/time -f "Execution Time: %e seconds\\nMemory Used: %M KB"';
+
+/* ---------- per‑language command builders ---------- */
 export const languageConfigs = {
   cpp: {
     ext: '.cpp',
-    cmd: f =>
-      `/usr/bin/time -f "Execution Time: %e seconds\nMemory Used: %M KB" ` +
-      `g++ ${f} -o ${f}.out && ${f}.out`
+    cmd: f => `${timer} g++ ${f} -o ${f}.out && ${f}.out`
+  },
+
+  python: {
+    ext: '.py',
+    cmd: f => `${timer} python3 ${f}`
   },
-  python: { ext: '.py', cmd: f => `python3 ${f}` },
-  js: { ext: '.js', cmd: f => `node ${f}` },
+
+  js: {
+    ext: '.js',
+    cmd: f => `${timer} node ${f}`
+  },
+
   java: {
     ext: '.java',
     cmd: f => {
       const cls = path.basename(f, '.java');
-      return `javac ${f} && java -cp ${tempDir} ${cls}`;
+      // wrap with sh -c so /usr/bin/time measures both compile + run
+      return `${timer} sh -c "javac ${f} && java -cp ${tempDir} ${cls}"`;
     }
   }
 };
 
-const pick = (s, r) => (s.match(r) || [])[1] || 'N/A';
+/* ---------- helpers ---------- */
+const pick  = (s, r) => (s.match(r) || [])[1] || 'N/A';
 const clean = s =>
-  s
-    .split('\n')
-    .filter(l => !/Execution Time|Memory Used/.test(l))
-    .join('\n')
-    .trim();
+  s.split('\n')
+   .filter(l => !/Execution Time|Memory Used/.test(l))
+   .join('\n')
+   .trim();
 
+/* ---------- main runner ---------- */
 export async function runCode(code, language, jobId) {
   const cfg = languageConfigs[language];
   if (!cfg) throw new Error('Unsupported language');
@@ -48,6 +63,6 @@ export async function runCode(code, language, jobId) {
   return {
     output: stdout.trim(),
     executionTime: pick(stderr, /Execution Time:\s*(.+?)\s*seconds/),
-    memoryUsage: pick(stderr, /Memory Used:\s*(.+?)\s*KB/)
+    memoryUsage:   pick(stderr, /Memory Used:\s*(.+?)\s*KB/)
   };
 }