--- a/TaskManager/Gpu/GpuThreads.cc	Fri Apr 06 18:30:09 2012 +0900
+++ b/TaskManager/Gpu/GpuThreads.cc	Sat Apr 07 09:29:09 2012 +0900
@@ -53,3 +53,26 @@
 
     return NULL
 }
+
+int
+GpuThreads::get_mail(memaddr *ret)
+{
+    *ret = args.scheduler->mail_read_from_host();
+    return 1;
+}
+
+int
+GpuThreads::has_mail(memaddr *ret)
+{
+    if (args.scheduler->has_mail_from_host() != 0) {
+        return get_mail(ret);
+    } else {
+        return 0;
+    }
+}
+
+void
+CpuThreads::send_mail(int cpuid, int num, memaddr *data)
+{
+    args.scheduler->mail_write_from_host(*data);
+}