Restore repo to 90f149e state

This reverts commit 3f16cb502c.

fork_bomb/fork_bomb.c

@@ -6,19 +6,10 @@
 #include <dirent.h>
 #include <ctype.h>
 #include <time.h>
-#include <signal.h>
-#include <termios.h>
 
 
 #define DEFAULT_NUM_LEN 512
 
-static volatile sig_atomic_t stop_requested = 0;
-
-static void handle_termination(int sig) {
-  (void)sig;
-  stop_requested = 1;
-}
-
 char *itoa(long num, char *strnum, size_t size){
   int isNegative = 0;
 
@@ -269,27 +260,6 @@ int main(void)
     perror("fopen csv");
     return 1;
   }
-
-  struct sigaction sa;
-  memset(&sa, 0, sizeof(sa));
-  sa.sa_handler = handle_termination;
-  sigaction(SIGTERM, &sa, NULL);
-  sigaction(SIGINT, &sa, NULL);
-
-  struct sigaction sa_chld;
-  memset(&sa_chld, 0, sizeof(sa_chld));
-  sa_chld.sa_handler = SIG_IGN;
-  sa_chld.sa_flags = SA_NOCLDWAIT;
-  sigaction(SIGCHLD, &sa_chld, NULL);
-
-  pid_t fork_pgid = getpgrp();
-  int owns_pgrp = 0;
-  if (!isatty(STDIN_FILENO) || tcgetpgrp(STDIN_FILENO) != fork_pgid) {
-    if (setpgid(0, 0) == 0) {
-      fork_pgid = getpgrp();
-      owns_pgrp = 1;
-    }
-  }
   fprintf(csv, "timestamp,elapsed_s,load1,load5,load15,mem_total_kb,mem_available_kb,mem_used_kb,proc_count,thread_count_total,pid,cpu_pct,sys_cpu_pct,forks_per_sec,rss_kb,vsz_kb,stack_kb,heap_kb,proc_threads\n");
 
   long count = 0;
@@ -309,9 +279,6 @@ int main(void)
   }
 
   while (1) {
-    if (stop_requested) {
-      break;
-    }
     pid_t pid = fork();
 
     if (pid < 0) {
@@ -384,12 +351,6 @@ int main(void)
     }
   }
 
-  if (owns_pgrp) {
-    signal(SIGTERM, SIG_IGN);
-    signal(SIGINT, SIG_IGN);
-    killpg(fork_pgid, SIGTERM);
-  }
-
   fclose(csv);
 
   return 0;