消息驱动框架post_message sys_get_message

message.c

@@ -0,0 +1,18 @@
+#include<linux/sched.h>
+#include<asm/segment.h>
+#include <asm/system.h>
+#include<all.h>
+int volatile jumpp;
+void post_message(int type){
+	cli();
+	if(jumpp<=10)
+	jumpp++;
+	sti();
+	return;
+}
+int sys_get_message(struct message *msg) {
+   	if(jumpp>0) --jumpp;
+	return jumpp;
+}
+	
+