Hi,
I have a program that runs two threads in stead of two processes. I want to use pipe to redirect the output of the first thread to the input of the second thread.
One thread is continuously writing to a pipe, and the other thread will read from the pipe.
How do I do that?
Is there... (2 Replies)
Hi All,
Please explain me when i have to use multiple process and when I have to use Multiple threads? Please give me an example.It will be very helpful for me.
Thanks in advance. (0 Replies)
I am writing java application on windows.
There are more than 100 threads run within java.exe.
I want to know what threads run within process java.exe so that I can find out if there are abnormal java threads. (4 Replies)
Hello all,
I have a directory of files of varying sizes.
I want to copy all these files in n number of threads to another directory such that each
copy set is more or less the same size.
Example :
Say /mydirA
It has around say 23 files of various sizes.
Number of copy... (0 Replies)
Scenario:
I have two PCs (named as A & B) which would send some traps to my third PC (named as C).
In PC C, I have to write a shell script such that it should accept the datas from both the PC-A & B parallely.
So my question is, is it possible to have two different child threads/tasks... (2 Replies)
Hello,
Is there any method thorugh which script can take argument if pass otherwise if argument doesn't pass then it takes the argument from the configuration file
i.e I am workiing on a script which will run through crontab and the script will
chekout the code ,zip and copy to the... (3 Replies)
Hello,
In a unix Solaris environment, (for simulation) how to start multiple threads (as Light Weight Process, not background process)?
thanks,
J. (7 Replies)
Hi , i need to run multiple scripts parallely ,on my server....i have 8 cpus . planning to run minimum of 6 scripts paralley ....could you please suggest someone .
thanks in advance , (3 Replies)
hi guys. i have a question for you
i have a one file and inside this file there are 1000 lines and each line is a linux command
running this commands takes long time so i want to create one bash script and run this lines in a loop with max number of threads
for example i want to run... (2 Replies)
Discussion started by: avtaritet
2 Replies
LEARN ABOUT PLAN9
pthread_atfork
PTHREAD_ATFORK(3) Library Functions Manual PTHREAD_ATFORK(3)NAME
pthread_atfork - register handlers to be called at fork(2) time
SYNOPSIS
#include <pthread.h>
int pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void));
DESCRIPTION
pthread_atfork registers handler functions to be called just before and just after a new process is created with fork(2). The prepare han-
dler will be called from the parent process, just before the new process is created. The parent handler will be called from the parent
process, just before fork(2) returns. The child handler will be called from the child process, just before fork(2) returns.
One or several of the three handlers prepare, parent and child can be given as NULL, meaning that no handler needs to be called at the cor-
responding point.
pthread_atfork can be called several times to install several sets of handlers. At fork(2) time, the prepare handlers are called in LIFO
order (last added with pthread_atfork, first called before fork), while the parent and child handlers are called in FIFO order (first
added, first called).
To understand the purpose of pthread_atfork, recall that fork(2) duplicates the whole memory space, including mutexes in their current
locking state, but only the calling thread: other threads are not running in the child process. The mutexes are not usable after the fork
and must be initialized with pthread_mutex_init in the child process. This is a limitation of the current implementation and might or
might not be present in future versions.
RETURN VALUE
pthread_atfork returns 0 on success and a non-zero error code on error.
ERRORS
ENOMEM insufficient memory available to register the handlers.
AUTHOR
Xavier Leroy <Xavier.Leroy@inria.fr>
SEE ALSO fork(2), pthread_mutex_lock(3), pthread_mutex_unlock(3).
LinuxThreads PTHREAD_ATFORK(3)