The `pthread_join()` function is part of pthread.h used to wait for another thread to finish executing.
A call to pthread_join(t, ...) suspends execution of the caller's thread. It does not return until thread t has finished executing.
Questions tagged [pthread-join]
257 questions
3
votes
2 answers
Merge Sort with PThreads in C
Side Note: I'm beginning to learn how to use pthreads and I'm starting to get the concept. I've been using this example script (written in C++) here to manage a Merge Sort with threads:…
theflarenet
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3
votes
2 answers
how to check if a pthread is joinable?
I know I can create a pthread with joinable attribute set, but once created,
am I right that I can also change that pthread to a detached
pthread?
If that's the case, how can I check if a pthread is joinable? And how can I change a pthread from…
james
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3
votes
1 answer
What happens when pthread_join is commented?
#include
#include "mythreads.h"
#include
#include
void *
mythread(void *arg) {
printf("%s\n", (char *) arg);
return NULL;
}
int
main(int argc, char *argv[])
{
if (argc != 1) {
fprintf(stderr,…
FlyingAura
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3
votes
1 answer
pthread_join does not affect main thread
I have found this Sockets tutorial http://www.binarytides.com/socket-programming-c-linux-tutorial/ and I am having trouble with the last example. It is a threaded server using sockets and pthreads.
The code compiles fine but it does not work as…
user1359448
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3
votes
1 answer
Multithreading in multi cpu multithreading
Suppose I have an undirected graph.
A small portion of the graph :
A -----\
C
B -----/
Now the node A and B proceeds to modify parallely node C. // Node A and Node B process Node C in parallel thread.
I want the thread for Node B will wait…
Soumya Palit
- 31
- 1
3
votes
2 answers
Destroy a detached thread (POSIX)
I was just wondering, if I create a detached thread (POSIX) using an attribute and the function "pthread_attr_setdetachstate" with the argument PTHREAD_CREATE_DETACHED, do I have to destroy the thread at the end of my program ?
I know that I have to…
Dust009
- 315
- 2
- 10
3
votes
2 answers
Segmentation Fault at pthread_join
So when I run my code, I'm getting a segmentation fault right at the pthread_join. There is a print statement after my pthread_join that doesn't run. Does anyone have any idea why? Could you give me some hints or ideas as to how to figure this…
angyxpoo
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3
votes
2 answers
How to join threads created dynamically in c/c++
I have written a C/C++ code which implements socket connection and the main thread is in continuous loop listening at its port. When a connection request comes at this port, I have spawned a thread using pthread calls and offloaded the work on this…
Yogesh lele
- 392
- 4
- 17
3
votes
2 answers
pthread: join a detached thread doesn't set errno correctly
I am checking the behavior of 'pthread_join' and have the following code:
#include
#include
#include
#include
#include
void *thread(void *vargp)
{
pthread_detach(pthread_self());
…
chuchao333
- 1,438
- 1
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3
votes
1 answer
C pthread join an ended thread
I'm building 2 programs (client/server) that communicate through FIFOs. Both programs have threads. When the Client's thread ends it doesn't get joined, and main hangs.
The programs do the following:
Server:
main: reads from FIFO1
main: create…
CiberWizZ
- 45
- 5
2
votes
0 answers
What could delay pthread_join() after threads have exited successfully?
My main thread creates 8 worker threads (on a machine with a 4 core, 8 thread CPU), and then waits for them to complete with pthread_join(). The threads all exit successfully, and the pthread_join() successfully completes. However, I log the times…
Hy Ginsberg
- 31
- 2
2
votes
4 answers
Why is retval a void** in pthread_join?
I am having a hard time understanding why pthread_join's retval argument is a void**. I have read the manpage and tried to wrap my head around it but I still cannot fully understand it. I couldn't convince myself that retval cannot be a void*. Could…
lumapools
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- 6
2
votes
0 answers
It seems that pthread_join() is not invoked or PTHREAD_ATTR_FLAG_DETACHED is not set Flutter Firebase
I've followed a tutorial regarding 'Flutter Firebase Authentication.
I faced many issues due to it being in an old version of firebase, but I migrated and fixed all problems related to the null safety and others. It showed 0 problems/errors.
But on…
Nadia Nadou
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2
votes
1 answer
Code of the function pthread_join - Pthread Library
I'm looking for the code of the pthread_join, but online I found only the prototype. Could you tell me where I can find it please?
Gennaro Arguzzi
- 769
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2
votes
2 answers
Logic problem in C. Define number of interactions on pthreads
So i have these code, i want to define my number of interactions manualy, so for each thread basicaly i define lets say 10 interactios so each thread will compute a block of 10. If i do that the thread wont go after the first 10.
Basically what i…
BloodGreen
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