From 46e4e11e1e30c1bcc05335df829a792d657ea781 Mon Sep 17 00:00:00 2001
From: _ov4 <ov4@ov4.org>
Date: Tue, 11 Aug 2026 13:27:46 +0000
Subject: update

---
 tsh.cc | 10 +++++-----
 util.h |  5 +++++
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/tsh.cc b/tsh.cc
index 06cfa2c..fc9b34f 100644
--- a/tsh.cc
+++ b/tsh.cc
@@ -15,8 +15,10 @@
 #include <iostream>
 #include <vector>
 #include <string>
+#include "util.h"
 
 using namespace std;
+using ov4::atomic_print;
 
 /* Misc manifest constants */
 #define MAXLINE    1024   /* max line size */
@@ -318,17 +320,15 @@ void waitfg(pid_t pid)
  */
 void sigchld_handler(int sig) 
 {
-    constexpr int numlen = 20;
     int errno_backup = errno;
     int status, pid;
-    char msg[] = "sig chld, pid: ", num[numlen];
+    char msg[] = "sig chld, pid: ";
     write(STDOUT_FILENO, msg, strlen(msg));
 
     while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
     {
-        // deletejob(NULL, pid);
-        sprintf(num, "%d\n", pid);
-        write(STDOUT_FILENO, num, strlen(num));
+        deletejob(NULL, pid);
+        atomic_print(pid);
     }
 
 
diff --git a/util.h b/util.h
index 7fd874d..4ede5bd 100644
--- a/util.h
+++ b/util.h
@@ -13,6 +13,11 @@
 
 namespace ov4 {
 
+void atomic_print(char *s);
+void atomic_print(int x);
+void reverse(char str[], int length);
+char* itoa(int num, char* str, int base);
+
 const int DECIMAL = 10;
 const int LENGTH = 20;
 
-- 
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