Hi guys,
I am creating two posix threads. I have some queries, hopefully you will help me out with them
1) How can I put a thread to indefinite sleep, for indefinite time period. I am familiar with this
for 5 second, how can I make it indefinite??
2) How can one thread wake another sleeping thread
3) Can one thread force another thread to go to sleep
Here is the program which is really bothering me, the idea is to have two threads, one filling the stack, and one emptying it. But I can't have one of my thread to wake up the other, after the stack is empty or full
See it for yourself!
If you can explain your points with a very small program, that would be so so nice of you.
Desperately waiting for your wonderful replies!!!!
Im old to Unix but new to scripting
I have a MacBook running osx that I want to use as an nfs client. The server will be a linux box with a wake on lan card. Here's the idea. Run a cron command on the mac every minute that checks if I am on my home wireless network (the linux box is wired to... (0 Replies)
m old to Unix but new to scripting
I have a MacBook running osx that I want to use as an nfs client. The server will be a linux box with a wake on lan card. Here's the idea. Run a cron command on the mac every minute that checks if I am on my home wireless network (the linux box is wired to... (6 Replies)
I have two threads: one maintains a thread-safe message queue (handle this queue at the beginning of every loop) and deals with tcp connections, the other one posts message to the former one. the problem is, while the former one was blocking at epoll_wait, it's not sure that how long until the... (0 Replies)
Hello, I'm searching for a proper way to let the kernel space ISR(implemented in a kernel module) wake up a user space thread on a hardware interrupt.
Except for sending a real-time signal, is it possible to use a semaphore?
I've searched it on google, but it seems impossible to share a... (0 Replies)
This is a very crude attempt in Bash at something that I needed but didn't seem to find in the 'sleep' command. However, I would like to be able to do it without the need for the temp file. Please go easy on me if this is already possible in some other way:
How many times have you used the... (5 Replies)
Hi all,
Is it possible to do the following in Linux (kernel 2.6.x):
- A user-space thread goes to "sleep". Using any call/mechanism
- On a hardware generated interrupt, the Interrupt handler (ISR) "wakes" the sleeping user-thread.
I have seen wait_event() and wake_up() but it appears... (1 Reply)
I'm a OS X user (MacBook Pro, OS X Lion) and I need it to wake up on Mondays, Wednesdays, Thursdays and Saturdays at 9:00 AM
on the rest of the days of the week at 7:00
I issue the following commands:
sudo pmset repeat wake MWRS 09:00:00 for the former
sudo pmset repeat wake TFU... (1 Reply)
Discussion started by: scrutinizerix
1 Replies
LEARN ABOUT SUSE
sleep
SLEEP(3) Linux Programmer's Manual SLEEP(3)NAME
sleep - Sleep for the specified number of seconds
SYNOPSIS
#include <unistd.h>
unsigned int sleep(unsigned int seconds);
DESCRIPTION
sleep() makes the calling thread sleep until seconds seconds have elapsed or a signal arrives which is not ignored.
RETURN VALUE
Zero if the requested time has elapsed, or the number of seconds left to sleep, if the call was interrupted by a signal handler.
CONFORMING TO
POSIX.1-2001.
BUGS
sleep() may be implemented using SIGALRM; mixing calls to alarm(2) and sleep() is a bad idea.
Using longjmp(3) from a signal handler or modifying the handling of SIGALRM while sleeping will cause undefined results.
SEE ALSO alarm(2), nanosleep(2), signal(2), signal(7)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2010-02-03 SLEEP(3)