C语言中的计时器（如Java） [英] Timer in C (like in Java)

问题描述

您好，我需要一个C语言中的设施，就像一组函数一样，来管理一个

计时器：我应该可以在一段时间内初始化它

（比如x毫秒），启动它，每x毫秒它应该执行某个

函数。简而言之，我需要类似java.util.Timer

类，但对于C（当然不是类）。

你知道任何实现吗？这样的事情（如果可能的话

实时）？

非常感谢

解决方案

< blockquote> Alexander Mahone< sa ****************** @ gmail.comwrites：

你好，我需要C中的一个工具，就像一组函数一样，用来管理一个

计时器：我应该能够在一段时间内初始化它

（比如x毫秒） ，启动它，每x毫秒它应该执行某个

函数。简而言之，我需要类似java.util.Timer

类，但对于C（当然不是类）。

你知道任何实现吗？这样的事情（如果可能的话，实时是b $ b）？

不在标准C.尝试新闻组处理您的操作

系统。


-

Keith Thompson（The_Other_Keith）< ks *** @ mib.org>

诺基亚

我们必须做点什么。这是事情。因此，我们必须这样做。

- Antony Jay和Jonathan Lynn，是部长

Alexander Mahone写道：

您好，我需要一个C语言中的工具，就像一组函数一样，来管理一个

计时器：我应该能够初始化它有一段时间

（比如x毫秒），启动它，每x毫秒它应该执行某个

函数。简而言之，我需要类似java.util.Timer

类，但对于C（当然不是类）。

你知道任何实现吗？这样的事情（如果可能的话

实时）？

非常感谢

标准C有没有你想做的设施。但POSIX

指定ualarm（）和setitimer（）用于在

指定的时间段后中断进程。然后信号处理程序可以调用您的函数。


< http://www.mkssoftware.com/docs/man3/ualarm.3.asp>

< http://www.mkssoftware.com/docs/man3/setitimer.3.asp>

在文章< fu *** ******@registered.motzarella.org> ;,

santosh< sa ********* @ gmail.comwrote：

>标准C没有您想要做的设施。但是，POSIX
指定ualarm（）和setitimer（）用于在指定的时间段后中断进程。然后信号处理程序可以调用您的函数。

两个函数都不是POSIX.1-1990的一部分。


ualarm（）从第4期开始被添加到POSIX ，版本2，并从

X / OPEN UNIX扩展转移到第5期的BASE（我认为是2002年）。

截至第6期（2004年）， ualarm（）标记为过时。
http：/ /www.opengroup.org/onlinepubs/...ns/ualarm.html


setitimer（）也被添加并移动到与ualarm（）相同的问题，

但是setitimer（）没有标记为过时。
http://www.opengroup.org/onlinepubs/...getitimer.html


有关-recommended-的信息POSIX计时器功能是

及其各种权衡，unix编程新闻组应该咨询
。

-

沃尔特示例类。 - Paul Tagliabue

Hello, I need a facility in C, like a set of functions, to manage a
timer: I should be able to initialize it with a certain period of time
(like x msec), start it, and every x msec it should execute a certain
function. In a few words, I need something like the java.util.Timer
class, but for C (of course not a class).
Do you know of any implementation of something like that (if possible
real-time)?
Thanks a lot

解决方案

Alexander Mahone <sa******************@gmail.comwrites:

Hello, I need a facility in C, like a set of functions, to manage a
timer: I should be able to initialize it with a certain period of time
(like x msec), start it, and every x msec it should execute a certain
function. In a few words, I need something like the java.util.Timer
class, but for C (of course not a class).
Do you know of any implementation of something like that (if possible
real-time)?

Not in standard C. Try a newsgroup that deals with your operating
system.

--
Keith Thompson (The_Other_Keith) <ks***@mib.org>
Nokia
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"

Alexander Mahone wrote:

Hello, I need a facility in C, like a set of functions, to manage a
timer: I should be able to initialize it with a certain period of time
(like x msec), start it, and every x msec it should execute a certain
function. In a few words, I need something like the java.util.Timer
class, but for C (of course not a class).
Do you know of any implementation of something like that (if possible
real-time)?
Thanks a lot

Standard C has no facilities for what you want to do. However POSIX
specifies ualarm() and setitimer() for interrupting a process after a
specified period. A signal handler can then call your function.

<http://www.mkssoftware.com/docs/man3/ualarm.3.asp>
<http://www.mkssoftware.com/docs/man3/setitimer.3.asp>

In article <fu*********@registered.motzarella.org>,
santosh <sa*********@gmail.comwrote:

>Standard C has no facilities for what you want to do. However POSIX
specifies ualarm() and setitimer() for interrupting a process after a
specified period. A signal handler can then call your function.

Neither function was part of POSIX.1-1990.

ualarm() was added to POSIX as of Issue 4, Version 2, and moved from
X/OPEN UNIX extension to BASE of of issue 5 (which I think was 2002.)
As of issue 6 (2004), ualarm() is marked obsolescent.
http://www.opengroup.org/onlinepubs/...ns/ualarm.html

setitimer() was also added and moved at the same issues as for ualarm(),
but setitimer() is not marked obsolescent.
http://www.opengroup.org/onlinepubs/...getitimer.html

For information about what the -recommended- POSIX timer functions are
and their various trade-offs, a unix programming newsgroup should
be consulted.
--
"Walter exemplified class." -- Paul Tagliabue

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