update name of code to labcodes

labcodes/lab8/user/forktest.c

@@ -0,0 +1,34 @@
+#include <ulib.h>
+#include <stdio.h>
+
+const int max_child = 32;
+
+int
+main(void) {
+    int n, pid;
+    for (n = 0; n < max_child; n ++) {
+        if ((pid = fork()) == 0) {
+            cprintf("I am child %d\n", n);
+            exit(0);
+        }
+        assert(pid > 0);
+    }
+
+    if (n > max_child) {
+        panic("fork claimed to work %d times!\n", n);
+    }
+
+    for (; n > 0; n --) {
+        if (wait() != 0) {
+            panic("wait stopped early\n");
+        }
+    }
+
+    if (wait() == 0) {
+        panic("wait got too many\n");
+    }
+
+    cprintf("forktest pass.\n");
+    return 0;
+}
+