05-30-2012
Thanks, but what do you mean by "read cancellation point?"
One other matter, my tests show that if, by chance, the thread no longer exists when I call pthread_cancel, the parent will abend with a segfault. What signal might I trap with signal() to prevent this?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All,
I have a written a script in korn shell for importing data into a oracle database. The shell invokes the import within the script. I want to kill this import (child process) . I tries using trap, but this does not kill the import even if i press cnt c. i have to login into other terminal... (2 Replies)
Discussion started by: yerics
2 Replies
2. Shell Programming and Scripting
I am calling another script from my main script and making it run in the background,based upon the value of the input provided by the user I want to kill the child process ,I have written this code
timer.ksh &
PID=$$
print "\n Do you wish to continue .. (Y/N) : \c "
read kill_proc
if ]... (4 Replies)
Discussion started by: mervin2006
4 Replies
3. Shell Programming and Scripting
I have a script that (ideally) starts tcpdump, sleeps a given number of seconds, then kills it.
When I do this for 10 seconds or and hour, it works fine. When I try it for 10 hours (the length I actually want) it just doesn't die, and will actually stick around for days.
Relevant part of my... (1 Reply)
Discussion started by: upnix
1 Replies
4. UNIX for Advanced & Expert Users
Hi,
Is there a way I can kill all the child processes of a process, given its process id.
Many thanks in advance.
J. (1 Reply)
Discussion started by: superuser84
1 Replies
5. UNIX for Advanced & Expert Users
Hi all,
I am writing a script which calls other third party scripts that perform numerous actions. I have no control over these scripts.
My problem is, one of these scripts seems to execute and do what it is meant to do, but my calling / parent script always exits at that point. I need to... (4 Replies)
Discussion started by: mark007
4 Replies
6. Solaris
Hi All
I have a separate thread ListenerThread having a socket listening to info broadcasted by some remote server. This is created in my main thread.
Because of requirements, once the separate thread is started I need to avoid any blocking function on the main thread. Once it comes to the... (2 Replies)
Discussion started by: manustone
2 Replies
7. Red Hat
Hi All,
Hope this is right area to ask this question.
I have a shell script (bash) "wrapper.sh", which contains few simple shell command
which executes a "server.sh" (conatins code to execute a java server) as a daemon.
Now what I want to kill this "server.sh" so that the server should... (2 Replies)
Discussion started by: jw_amp
2 Replies
8. Programming
Parent Thread Of Child Thread
Suppose a process creates some threads say threadC and threadD.
Later on each of these threads create new child threads say threadC1, threadC2, threadC3 etc. So a tree of threads will get created.
Is there any way to find out the parent thread of one such... (1 Reply)
Discussion started by: rupeshkp728
1 Replies
9. Shell Programming and Scripting
I'm likely going to explain this clumsily, so apologies in advance:
I have the following script:
#!/bin/bash
pidPrefix="logGen"
checkPrime ()
{
if /sbin/ifconfig eth0:0|/bin/grep -wq inet;then isPrime=1;else isPrime=0;fi
}
killScript ()
{
/usr/bin/find /var/run -name... (4 Replies)
Discussion started by: DeCoTwc
4 Replies
10. Solaris
Hello,
A little background on what we are doing first. We are running several applications from a CLI, and not all of them are fully functional. They do on occasion core dump, not a problem. We are running a service that takes a screen scrape of those apps and displays them in a more user... (5 Replies)
Discussion started by: Bryan.Eidson
5 Replies
LEARN ABOUT SUNOS
pthread_join
pthread_join(3C) pthread_join(3C)
NAME
pthread_join - wait for thread termination
SYNOPSIS
cc -mt [ flag... ] file... -lpthread [ library... ]
#include <pthread.h>
int pthread_join(pthread_t thread, void **status);
The pthread_join() function suspends processing of the calling thread until the target thread completes. thread must be a member of the
current process and it cannot be a detached thread. See pthread_create(3C).
If two or more threads wait for the same thread to complete, all will suspend processing until the thread has terminated, and then one
thread will return successfully and the others will return with an error of ESRCH. The pthread_join() function will not block processing of
the calling thread if the target thread has already terminated.
If a pthread_join() call returns successfully with a non-null status argument, the value passed to pthread_exit(3C) by the terminating
thread will be placed in the location referenced by status.
If the pthread_join() calling thread is cancelled, then the target thread will remain joinable by pthread_join(). However, the calling
thread may set up a cancellation cleanup handler on thread prior to the join call, which may detach the target thread by calling
pthread_detach(3C). See pthread_detach(3C) and pthread_cancel(3C).
If successful, pthread_join() returns 0. Otherwise, an error number is returned to indicate the error.
EDEADLK A joining deadlock would occur, such as when a thread attempts to wait for itself.
EINVAL The thread corresponding to the given thread ID is a detached thread.
ESRCH No thread could be found corresponding to the given thread ID.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
pthread_cancel(3C), pthread_create(3C), pthread_detach(3C), pthread_exit(3C), wait(3C), attributes(5), standards(5)
The pthread_join(3C) function must specify the thread ID for whose termination it will wait.
Calling pthread_join() also "detaches" the thread; that is, pthread_join() includes the effect of the pthread_detach() function. If a
thread were to be cancelled when blocked in pthread_join(), an explicit detach would have to be performed in the cancellation cleanup han-
dler. The pthread_detach() function exists primarily for this purpose.
23 Mar 2005 pthread_join(3C)