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In a linux application I'm using pipes to pass information between threads.
The idea behind using pipes is that I can wait for multiple pipes at once using poll(2). That works well in practice, and my threads are sleeping most of the time and only wake up if there is something to do for them.
On…
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Can I and if so then how?
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I need to read and write some data through named pipes.
I have tested it in a simple Ruby app, and it works nice.
But I dont know, where should i put it in my Rails app? I have heard about Rake tasks, but i don't sure, is it right solution.
I need to open a pipe-file, and listen to data. If there…
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Yahoo! Pipe is a free online web application which helps you combine many feeds into one. Sort it by your preference, filter it and finally present it. In other words, Yahoo! Pipes is a web mashup, w... [Author: Debbie Everson - Web Design and Development - March 30, 2010]
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What are all the differences between pipes and message queues?
Please explain both from vxworks & unix perspectives.
I think pipes are unidirectional but message queues aren't.
But don't pipes internally use message queues, then how come pipes are unidirectional but message queues are not?
What…
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I'd like to know if there's a way to get the number of seconds since the UNIX epoch in any POSIX compliant shell, without resorting to non-POSIX languages like perl, or using non-POSIX extensions like GNU awk's strftime function.
Here are some solutions I've already ruled out...
date +%s //…
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Under Ubuntu 8.10, bash shell, the LANG and LC_ALL variables are not set:
user@machine1:~$ locale
LANG=
LC_CTYPE="POSIX"
LC_NUMERIC="POSIX"
LC_TIME="POSIX"
LC_COLLATE="POSIX"
LC_MONETARY="POSIX"
LC_MESSAGES="POSIX"
LC_PAPER="POSIX"
LC_NAME="POSIX"
LC_ADDRESS="POSIX"
LC_TELEPHONE="POSIX"
LC_MEASUREMENT="POSIX"
LC_IDENTIFICATION="POSIX"
LC_ALL=
Where…
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posix does not appear when I run php -m cmd, however, I see it from the phpinfo() –enable-posix=shared on Linux with Plesk 9.
Basically, I can't use posix_*() functions as described at
http://www.php.net/manual/en/ref.posix.php
this shows doesn't exists:
if (function_exists(‘posix_getuid’)) {
echo…
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In a linux application I'm using pipes to pass information between threads.
The idea behind using pipes is that I can wait for multiple pipes at once using poll(2). That works well in practice, and my threads are sleeping most of the time and only wake up if there is something to do for them.
On…
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Hi
Do you know about any good library wrapping posix and linux functions and structures ( eg. sockets or file descriptors ) into C++ classes? For example I'm thinking about a base FileDescriptor class and some inheriting classes ( unix sockets etc ) with methods like write, read or even some syscalls…
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