From 25b4284d09f666b874f9d31f014f7de6899c857a Mon Sep 17 00:00:00 2001
From: Andrew Golovashevich <landgrafhomyak@gmail.com>
Date: Fri, 11 Oct 2024 01:49:48 +0300
Subject: [PATCH] Fixes in lab1

---
 lab1/v7/using_signal_handlers.c | 29 +++++++++++++----------------
 1 file changed, 13 insertions(+), 16 deletions(-)

diff --git a/lab1/v7/using_signal_handlers.c b/lab1/v7/using_signal_handlers.c
index 590ef6e..47d5c2a 100644
--- a/lab1/v7/using_signal_handlers.c
+++ b/lab1/v7/using_signal_handlers.c
@@ -1,15 +1,7 @@
 #include <stdlib.h>
 #include <stdio.h>
-#include <time.h>
-#include <fcntl.h>
 #include <unistd.h>
 #include <signal.h>
-#include <strings.h>
-
-void wait_clocks(clock_t clocks_to_wait) {
-    const clock_t end = clock() + clocks_to_wait;
-    while (clock() < end);
-}
 
 struct ping_pong_data_t {
     char const *name;
@@ -23,12 +15,11 @@ void do_ping_pong(int signo) {
     if (signo != SIGUSR1)
         return;
 
-    const clock_t delay_clocks = (clock_t) (CLOCKS_PER_SEC * ping_pong_data.delay_seconds);
 
     printf("[%s] Got signal\n", ping_pong_data.name);
-    printf("[%s] PID=%d\n", ping_pong_data.name, ping_pong_data.pid_to_print);
+    printf("[%s] Another side PID=%d\n", ping_pong_data.name, ping_pong_data.pid_to_print);
     printf("[%s] Sleeping %lf seconds before sending signal\n", ping_pong_data.name, ping_pong_data.delay_seconds);
-    wait_clocks(delay_clocks);
+    usleep((useconds_t) (1000 * 1000 * ping_pong_data.delay_seconds));
     printf("[%s] Sending signal\n", ping_pong_data.name);
     kill(ping_pong_data.pid_to_send, SIGUSR1);
 }
@@ -55,29 +46,35 @@ int main(void) {
         case 0:
             child_pid = getpid();
 
-            ping_pong_data.name = "c";
-            ping_pong_data.delay_seconds = 2.5;
+            ping_pong_data.name = "\033[36mchild\033[0m";
+            ping_pong_data.delay_seconds = 1.5;
             ping_pong_data.pid_to_print = parent_pid;
             ping_pong_data.pid_to_send = parent_pid;
 
+            printf("[%s] My PID=%d\n", ping_pong_data.name, getpid());
+
             signal(SIGUSR1, do_ping_pong);
 
             break;
         default:
-            ping_pong_data.name = "c";
-            ping_pong_data.delay_seconds = 2.5;
+            ping_pong_data.name = "\033[31mparent\033[0m";
+            ping_pong_data.delay_seconds = 1.5;
             ping_pong_data.pid_to_print = child_pid;
             ping_pong_data.pid_to_send = child_pid;
 
+            printf("[%s] My PID=%d\n", ping_pong_data.name, getpid());
+
             signal(SIGUSR1, do_ping_pong);
 
             kill(parent_pid, SIGUSR1);
-            
+
             break;
 
     }
 
     while (is_running)
         pause();
+
+    printf("[%s] Interrupted\n", ping_pong_data.name);
     return EXIT_SUCCESS;
 }
\ No newline at end of file