add

TsinghuaDatabaseGroup · TsinghuaDatabaseGroup · commit 566e3c22127e · 2024-05-05T22:35:59.000+08:00
diff --git a/lec11/p2-coroutine.md b/lec11/p2-coroutine.md
@@ -689,10 +689,10 @@ fn main() { //Asynchronous multi-threaded concurrent webserver
 
 #### Architecture of SharedScheduler
 
-![bg right:60% 95% arch](figs/arch.png)
+![bg right:50% 95% arch](figs/arch.png)
 
 1. 操作系统与用户程序各自的 Executor 维护协程
-2. SharedScheduler 通过 vDSO 共享给用户进程
+2. SharedScheduler 通过 vDSO (virtual Dynamic Shared Object) 共享给用户进程
 3. 通过 Global Bitmap 进行操作系统与用户进程之间协调调度
 
 <!--
diff --git a/lec9/p4-fs-lab.md b/lec9/p4-fs-lab.md
@@ -713,12 +713,12 @@ pub struct TaskControlBlockInner {
 
 pub struct OSInode {//进程管理的inode
     readable: bool,  writable: bool,
-    inner: UPSafeCell<OSInodeInner>,
+    inner: UPSafeCell<OSInodeInner>,//多线程并发安全
 }
 
 pub struct OSInodeInner {
     offset: usize, //文件读写的偏移位置
-    inode: Arc<Inode>,//存储设备inode
+    inode: Arc<Inode>,//存储设备inode，线程安全的引用计数指针
 }
 ```
 ![bg right:42% 95%](figs/fs-fsdisk.png)

Original file line number	Diff line number	Diff line change
`@@ -713,12 +713,12 @@ pub struct TaskControlBlockInner {`
`713`	`713`
`714`	`714`	`pub struct OSInode {//进程管理的inode`
`715`	`715`	`readable: bool, writable: bool,`
`716`		`- inner: UPSafeCell<OSInodeInner>,`
	`716`	`+ inner: UPSafeCell<OSInodeInner>,//多线程并发安全`
`717`	`717`	`}`
`718`	`718`
`719`	`719`	`pub struct OSInodeInner {`
`720`	`720`	`offset: usize, //文件读写的偏移位置`
`721`		`- inode: Arc<Inode>,//存储设备inode`
	`721`	`+ inode: Arc<Inode>,//存储设备inode，线程安全的引用计数指针`
`722`	`722`	`}`
`723`	`723`	```
`724`	`724`	`![bg right:42% 95%](figs/fs-fsdisk.png)`