P09 lab code added

2020-04-26 15:02:50 +02:00
parent 94945069e3
commit f4c374887c
45 changed files with 2116 additions and 0 deletions
@@ -0,0 +1,48 @@
+//***************************************************************************
+// File:             ProcA7.c
+// Original Author:  M. Thaler (Modul BSY)
+//***************************************************************************
+
+//***************************************************************************
+// system includes
+//***************************************************************************
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+
+//***************************************************************************
+// Function: main(), parameter: none
+//***************************************************************************
+
+int main(void) {
+
+    pid_t   pid;
+    int j;
+
+    for (j = 0; j < 3; j++) {       // generate 3 processes
+        pid = fork();
+        switch (pid) {
+          case -1:
+            perror("Could not fork");
+            break;
+          case 0:
+            sleep(j+2);             // process j sleeps for j+2 sec
+            exit(0);                // then exits
+            break;
+          default:                  // parent
+            break;
+        }
+    }
+    sleep(8);   // parent process sleeps for 6 sec
+    wait(NULL); // consult manual for "wait"
+    sleep(2);
+    wait(NULL);
+    sleep(2);
+    wait(NULL);
+    sleep(2);
+    exit(0);
+}
@@ -0,0 +1,27 @@
+# *************************************************************
+# Original Autor:  M. Thaler (Modul BSY)
+# *************************************************************
+
+CMP=        gcc
+CMPFLAGS=   -Wall
+LDFLAGS=
+EXENAMES=   aaaa.e
+FNAME=      ProcA6
+LIBNAME=
+
+$(EXENAMES):	$(FNAME).o
+	$(CMP)  $(FNAME).o $(LIBNAME) $(LDFLAGS) -o $@
+
+.c.o:
+	$(CMP) -c $(CMPFLAGS) $<
+
+.cc.o:
+	$(CMP) -c $(CMPFLAGS) $<
+
+clean:
+	rm -f *.o $(EXENAMES)
+
+all:
+	@make clean
+	@make
+
@@ -0,0 +1,19 @@
+#!/bin/bash
+# M. Thaler, InIT/ZHAW 11/2014
+# Version v.fs20
+
+if test "$1" = ""
+then
+    cmd="-a"
+else
+    cmd="-C $1"
+fi
+
+forever="1"
+while test "$forever" = "1"
+do
+    clear
+    ps $cmd
+    sleep 1
+done
+