> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/pthread/pthread_multi_np.3.md).

# pthread\_multi\_np.3

`pthread_multi_np` — 在多线程与单线程调度模式之间切换

## 名称

`pthread_multi_np`, `pthread_single_np`

## 库

libpthread

## 概要

```c
#include <pthread_np.h>

int
pthread_multi_np(void);

int
pthread_single_np(void);
```

## 描述

`pthread_single_np` 函数将进程切换到单线程模式，即挂起除当前线程以外的所有线程。此函数的语义类似于 [pthread\_suspend\_all\_np(3)](/man/pthread/pthread_suspend_all_np.3.md)。

`pthread_multi_np` 函数将进程切换到多线程模式。此函数的语义类似于 [pthread\_resume\_all\_np(3)](https://github.com/FreeBSD-Ask/freebsd-man-sc/blob/main/man3/pthread_resume_all_np.3.md)。

## 返回值

`pthread_multi_np` 和 `pthread_single_np` 函数始终返回 0。

## 参见

[pthread\_np(3)](https://github.com/FreeBSD-Ask/freebsd-man-sc/blob/main/man3/pthread_np.3.md), [pthread\_resume\_all\_np(3)](https://github.com/FreeBSD-Ask/freebsd-man-sc/blob/main/man3/pthread_resume_all_np.3.md), [pthread\_suspend\_all\_np(3)](/man/pthread/pthread_suspend_all_np.3.md)

## 作者

本手册页由 Alexey Zelkin <phantom@FreeBSD.org> 编写。


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