""

util.c

@@ -0,0 +1,63 @@
+/*
+ * util.c:
+ * Various utility functions.
+ *
+ * Copyright (c) 2002 Chris Lightfoot. All rights reserved.
+ * Email: chris@ex-parrot.com; WWW: http://www.ex-parrot.com/~chris/
+ *
+ */
+
+static const char rcsid[] = "$Id$";
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "iftop.h"
+
+/* xmalloc:
+ * Malloc, and abort if malloc fails. */
+void *xmalloc(size_t n) {
+    void *v;
+    v = malloc(n);
+    if (!v) abort();
+    return v;
+}
+
+/* xcalloc:
+ * As above. */
+void *xcalloc(size_t n, size_t m) {
+    void *v;
+    v = calloc(n, m);
+    if (!v) abort();
+    return v;
+}
+
+/* xrealloc:
+ * As above. */
+void *xrealloc(void *w, size_t n) {
+    void *v;
+    v = realloc(w, n);
+    if (n != 0 && !v) abort();
+    return v;
+}
+
+/* xstrdup:
+ * As above. */
+char *xstrdup(const char *s) {
+    char *t;
+    t = strdup(s);
+    if (!t) abort();
+    return t;
+}
+
+/* xfree:
+ * Free, ignoring a passed NULL value. */
+void xfree(void *v) {
+    if (v) free(v);
+}
+