update name of code to labcodes

labcodes/lab5/kern/debug/panic.c

@@ -0,0 +1,49 @@
+#include <defs.h>
+#include <stdio.h>
+#include <intr.h>
+#include <kmonitor.h>
+
+static bool is_panic = 0;
+
+/* *
+ * __panic - __panic is called on unresolvable fatal errors. it prints
+ * "panic: 'message'", and then enters the kernel monitor.
+ * */
+void
+__panic(const char *file, int line, const char *fmt, ...) {
+    if (is_panic) {
+        goto panic_dead;
+    }
+    is_panic = 1;
+
+    // print the 'message'
+    va_list ap;
+    va_start(ap, fmt);
+    cprintf("kernel panic at %s:%d:\n    ", file, line);
+    vcprintf(fmt, ap);
+    cprintf("\n");
+    va_end(ap);
+
+panic_dead:
+    intr_disable();
+    while (1) {
+        kmonitor(NULL);
+    }
+}
+
+/* __warn - like panic, but don't */
+void
+__warn(const char *file, int line, const char *fmt, ...) {
+    va_list ap;
+    va_start(ap, fmt);
+    cprintf("kernel warning at %s:%d:\n    ", file, line);
+    vcprintf(fmt, ap);
+    cprintf("\n");
+    va_end(ap);
+}
+
+bool
+is_kernel_panic(void) {
+    return is_panic;
+}
+