Skip to content

Fix #92 #93

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
taoky merged 2 commits into from
Oct 3, 2025
Merged

Fix #92 #93

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
f405d95
Fix #92
iBug Oct 3, 2025
d75061e
Ignore /site
iBug Oct 3, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 2 additions & 2 deletions .gitignore
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
env/
venv/
venv-mkdocs/
site/
.env/

node_modules/
node_modules/
/site
4 changes: 2 additions & 2 deletions docs/Ch04/supplement.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,7 @@ Fork 是类 UNIX 中创建进程的基本方法：将当前的进程完整复制

许多守护进程直接由命令行的 shell 经 fork 产生，这样的进程首先要脱离当前会话，否则父进程退出时子进程也会退出。创建会话的系统调用是 `setsid()`。然而从 shell 中 fork 出来的进程为进程组组长，不能调用 setsid 另开会话：

```
```text
DESCRIPTION
setsid() creates a new session if the calling process is not a process group leader. The calling
process is the leader of the new session (i.e., its session ID is made the same as its process
Expand Down Expand Up @@ -183,7 +183,7 @@ int main() {

![forking](images/forking.png)

按下 T 键，界面显示的进程将转化为树状结构，直观描述了父子进程之间的关系。此处可以明显观察到树梢子进程的 PID 等于父进程的 PPID。
按下 T 键，界面显示的进程将转化为树状结构，直观描述了父子进程之间的关系。此处可以明显观察到树梢子进程的 PPID 等于父进程的 PID。

同时由 shell 进程创立的 forking 进程的进程组号 (PGRP) 为自己的 PID，剩余进程的 PGRP 则继承自最开始的 forking 进程，PGRP 可以通过系统调用修改为自身，从原进程组中独立出去另起门户。

Expand Down