If the sleep() function returns because the requested time has elapsed, the value returned will be zero. If the sleep() function returns due to the delivery of a signal, the value returned will be the unslept amount (the requested time minus the time actually slept) in seconds. SEE ALSO...
这些问题通常由需要处理硬件延迟并可能对Linux内核的内部工作机制不够熟悉的驱动程序编写者面临。 Inserting Delays 插入延迟 首先,也是最重要的问题是你需要问自己的是: “我的代码是否在原子上下文中?” “它真的需要在原子上下文中延迟吗?” 原子上下文: 你必须使用 *delay 函数族。这些函数使用时钟速度的jiffie...
Thesleepfunction waits forsecondsor until a signal is delivered, whichever happens first. Ifsleepfunction returns because the requested interval is over, it returns a value of zero. If it returns because of delivery of a signal, its return value is the remaining time in the sleep interval. 参...
在<windows.h>里面。在VC中使用时，sleep函数的头文件为windows。h，在Linux下，gcc编译器中，使用的头文件因gcc版本的不同而不同 在VC中，Sleep中的第一个英文字符为大写的"S"，在linux下不要大写，在标准C中是sleep，不要大写，简单的说VC用Sleep，别的一律使用sleep 在VC中，Sleep（）里面的...
In conclusion, the sleep function in theheader file in Red Hat Enterprise Linux is an essential tool for managing processes and threads. By leveraging the functions provided in this header file, developers can create high-quality applications that meet the demands of modern enterprise environments. ...
the value returned will be zero. If the sleep() function returns due to the delivery of a signal, the value returned will be the unslept amount (the requested time minus the time actually slept) in seconds. 也就是说在执行第一个 sleep 的时候,进程正准备休眠的时候,被一个信号唤醒了,再执行...
Thesleepcommand in Linux may seem very basic at first since its function is to delay the execution of scripts or commands for a specified amount of time. However, when incorporated into more complex scripts or used in combination with other commands,sleepcan become a useful tool for managing ...
【C/C++】linuxC中sleep“卡住”的问题 linux环境下C语言中sleep的问题printf默认是输出到标准输出,而标准输出默认使用的是行缓冲。在sleep之前fflush(stdout)强制刷缓冲,或者在程序开始使用setbuf(stdout, NULL)禁用缓冲当然,假如你有足够的耐心,大约过几个小时后,缓冲区终于满了,你会看到效果 ...
Linux中并没有提供系统调用sleep(),sleep()是在库函数中实现的,它是通过调用alarm()来设定报警时间,调用sigsuspend()将进程挂起在信号SIGALARM上,sleep()只能精确到秒级上。 nanosleep()则是Linux中的系统调用,它是使用定时器来实现的,该调用使调用进程睡眠,并往定时器队列上加入一个timer_list型定时器,time_lis...
log("===delay==="); // delay 延迟几秒后执行函数 function delay(fn, seconds, ...args) { return new Promise((resolve) => setTimeout(() => { // console.log(args); Promise.resolve(fn(...args)).then(resolve); }, seconds) ); } async function delayTest() { console.log("Start...