From db7a9aa6f9c46b41ded8ac326b6c32b612591325 Mon Sep 17 00:00:00 2001
From: Liuyuan <96400967+LiuYuan-SHU@users.noreply.github.com>
Date: Fri, 30 Dec 2022 14:36:19 +0800
Subject: [PATCH] doc: Update cpp.md (#254)
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开始添加多线程部分，主要添加了线程的创建、销毁和this_thread的所有函数

尚未开始的内容：锁、互斥量、线程同步
---
 docs/cpp.md | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/docs/cpp.md b/docs/cpp.md
index 097c93e3..92848d08 100644
--- a/docs/cpp.md
+++ b/docs/cpp.md
@@ -626,6 +626,71 @@ std::for_each(vec.begin(), vec.end(), [](int& ele) -> void
     });
 ```
 
+## C++多线程
+
+> g++编译选项：`std=c++11`
+>
+> 包含头文件：
+>
+> + `#include <thread>`：C++多线程库
+> + `#include <mutex>`：C++互斥量库
+
+### 线程的创建
+
+以普通函数作为线程入口函数：
+
+```c++
+void thread_entry_function_1() { }
+void thread_entry_function_2(int val) { }
+
+std::thread my_thread_1(thread_entry_function_1);
+std::thread my_thread_2(thread_entry_function_2, 5);
+```
+
+以类对象作为线程入口函数：
+
+```c++
+class Entry
+{
+    void operator()() { }
+    void entry_function() { }
+};
+
+Entry entry;
+// 调用operator()()
+std::thread my_thread_1(entry);	
+// 调用Entry::entry_function
+std::thread my_thread_2(&Entry::entry_function, &entry);	
+```
+
+以lambda表达式作为线程入口函数：
+
+```c++
+std::thread my_thread([]() -> void 
+      {
+         // ... 
+      });
+```
+
+### 线程的销毁
+
+```c++
+thread my_thread;
+// 阻塞
+my_thread.join();
+// 非阻塞
+my_thread.detach();
+```
+
+### `this_thread`
+
+```c++
+std::this_thread::get_id();		// 获取当前线程ID
+std::this_thread::sleep_for();	// 使当前线程休眠一段指定时间
+std::this_thread::sleep_until();// 使当前线程休眠到指定时间
+std::this_thread::yield();		// 暂停当前线程的执行，让别的线程执行
+```
+
 C++ 预处理器
 ------------