From 06663064d677ad511748fa2e5cdec61f1db372ef Mon Sep 17 00:00:00 2001
From: Hengyu Ai <aihy2023@shanghaitech.edu.cn>
Date: Mon, 11 Mar 2024 00:46:12 +0800
Subject: [PATCH] remake script clangd

---
 lecture_note/docs/pintos/proj2.md | 18 ++++++++++++++++--
 pintos/src/userprog/remake.sh     |  5 +++--
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/lecture_note/docs/pintos/proj2.md b/lecture_note/docs/pintos/proj2.md
index 62ca91a..b1cf7fc 100644
--- a/lecture_note/docs/pintos/proj2.md
+++ b/lecture_note/docs/pintos/proj2.md
@@ -11,7 +11,7 @@
 
 ## 分析
 
-在 `src/tests/userprog/Make.tests` 内有此 project 的自测数据点.
+在 `tests/userprog/Make.tests` 内有此 project 的自测数据点.
 
 ```
 tests/userprog/args-none_SRC = tests/userprog/args.c
@@ -36,4 +36,18 @@ else
 msg ("end");
 ```
 
-主要内容为打印命令行参数, 也就是需要实现为 user program 传参.
\ No newline at end of file
+主要内容为打印命令行参数, 也就是需要实现为 user program 传参.
+
+分析调用过程: 在 `threads/init.c` 中, `main() -> run_actions() -> run_task() -> process_wait (process_execute (task))`
+
+看一下 `process_wait()`
+
+```c
+int
+process_wait (tid_t child_tid UNUSED) 
+{
+  return -1;
+}
+```
+
+按照注释里的内容, 这个函数作用是等待编号 `child_tid` 线程的运行结果, 如果被系统中止/传入的 `tid` 不存在/则返回 `-1`, 否则返回
\ No newline at end of file
diff --git a/pintos/src/userprog/remake.sh b/pintos/src/userprog/remake.sh
index fae2d60..76b308b 100755
--- a/pintos/src/userprog/remake.sh
+++ b/pintos/src/userprog/remake.sh
@@ -1,9 +1,10 @@
 #!/bin/bash
 
 make clean
-make
+bear -- make
+mv compile_commands.json build/
 cd build/
 pintos-mkdisk filesys.dsk --filesys-size=2
 cd ..
 
-echo "userprog/ clean & rebuild."
\ No newline at end of file
+echo "userprog/ clean & rebuild."