X-Git-Url: https://gapil.gnulinux.it/gitweb/?a=blobdiff_plain;f=sources%2FForkTest.c;fp=sources%2FForkTest.c;h=da38629b41892b6be703821222303d4da4073576;hb=0d1802dcd969187e6133ba143ebc473c9fefc259;hp=0000000000000000000000000000000000000000;hpb=67a484c6ccfdb14cdd37678ca5df0db699801935;p=gapil.git

diff --git a/sources/ForkTest.c b/sources/ForkTest.c
new file mode 100644
index 0000000..da38629
--- /dev/null
+++ b/sources/ForkTest.c
@@ -0,0 +1,95 @@
+/****************************************************************
+ *
+ * Program ForkTest.c: 
+ * Program to test process creation
+ *
+ * Author: Simone Piccardi
+ * Sep. 2001
+ *
+ * Usage: forktest -h give all info's
+ *
+ * $Id: ForkTest.c,v 1.1 2001/09/09 17:39:15 piccardi Exp $
+ *
+ ****************************************************************/
+/* 
+ * Include needed headers
+ */
+#include <errno.h>       /* error definitions and routines */ 
+#include <stdlib.h>      /* C standard library */
+#include <unistd.h>      /* unix standard library */
+#include <stdio.h>	 /* standard I/O library */
+#include <string.h>      /* string functions */
+
+/* Help printing routine */
+void usage(void);
+
+int main(int argc, char *argv[])
+{
+/* 
+ * Variables definition  
+ */
+    int i;
+    int nchild;
+    pid_t pid;
+    /*
+     * Input section: decode command line parameters 
+     * Use getopt function
+     */
+    opterr = 0;	 /* don't want writing to stderr */
+    while ( (i = getopt(argc, argv, "h")) != -1) {
+	switch (i) {
+	/* 
+	 * Handling options 
+	 */ 
+	case 'h':  
+	    printf("Wrong -h option use\n");
+	    usage();
+	    return(0);
+	    break;
+	case '?':   /* unrecognized options */
+	    printf("Unrecognized options -%c\n",optopt);
+	    usage();
+	default:    /* should not reached */
+	    usage();
+	}
+    }
+    /* ***********************************************************
+     * 
+     *		 Options processing completed
+     *
+     *		      Main code beginning
+     * 
+     * ***********************************************************/
+    /* There must be remaing parameters */
+    if (optind == argc) {
+	usage();
+    }
+    nchild = atoi(argv[optind]);
+    printf("Test for forking %d child\n", nchild);
+    /* loop to fork children */
+    for (i=0; i<nchild; i++) {
+	if ( (pid = fork()) < 0) {
+	    printf("Error on %d child creation, %s\n", i, strerror(errno));
+	}
+	if (pid == 0) {   /* child */
+	    printf("Child %d successfully executing\n", i++);
+	    sleep(2);
+	    printf("Child %d exiting\n", i);
+	    exit(0);
+	} else {          /* parent */
+	    printf("Spawned %d child, pid %d \n", i, pid);
+	}
+    }
+    /* normal exit */
+    return 0;
+}
+/*
+ * routine to print usage info and exit
+ */
+void usage(void) {
+    printf("Program forktest: fork a given number of child \n");
+    printf("Usage:\n");
+    printf("  forktest [-h] child to fork \n");
+    printf("  -h	   print this help\n");
+    exit(1);
+}