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# pthread\_cond\_broadcast(3)

`pthread_cond_broadcast` — 唤醒所有等待条件变量的线程

## 名称

`pthread_cond_broadcast`

## 库

Lb libpthread

## 概要

`#include <pthread.h>`

`Ft int Fn pthread_cond_broadcast pthread_cond_t *cond`

## 描述

`Fn pthread_cond_broadcast` 函数唤醒所有等待条件变量 `cond` 的线程。

## 返回值

若成功，`Fn pthread_cond_broadcast` 函数将返回零，否则将返回一个错误号以指示错误。

## 错误

`Fn pthread_cond_broadcast` 函数在以下情况下会失败：

**\[Er** EINVAL] `cond` 指定的值无效。

## 参见

[pthread\_cond\_destroy(3)](/pthread/pthread_cond_destroy.3.md), [pthread\_cond\_init(3)](/pthread/pthread_cond_init.3.md), [pthread\_cond\_signal(3)](/pthread/pthread_cond_signal.3.md), [pthread\_cond\_timedwait(3)](/pthread/pthread_cond_timedwait.3.md), [pthread\_cond\_wait(3)](/pthread/pthread_cond_wait.3.md)

## 标准

`Fn pthread_cond_broadcast` 函数遵循 ISO/IEC 9945-1:1996 ("POSIX.1") 标准。