add lab answers

2014-08-20 15:42:20 +08:00
parent d9ec12887b
commit f9773095fe
731 changed files with 92876 additions and 0 deletions
--- a/labcodes_answer/lab7_result/user/yield.c
+++ b/labcodes_answer/lab7_result/user/yield.c
@@ -0,0 +1,16 @@
+#include <ulib.h>
+#include <stdio.h>
+
+int
+main(void) {
+    int i;
+    cprintf("Hello, I am process %d.\n", getpid());
+    for (i = 0; i < 5; i ++) {
+        yield();
+        cprintf("Back in process %d, iteration %d.\n", getpid(), i);
+    }
+    cprintf("All done in process %d.\n", getpid());
+    cprintf("yield pass.\n");
+    return 0;
+}
+