09-08-2008
/*Mark it active*/
active_status_array[i]=1;
/*Create new threads*/
rc = pthread_create(&thdreads[i], &attr, file_parser, (void*)&thread_data_array[i]);
if (rc)
{
printf("ERROR; return code from pthread_create() is %d INDEX %d\n", rc,i);
exit(-1);
}
else
{
/*Deatach thread*/
rc = pthread_detach(thdreads[i]);
if (rc) {
printf("Got an unexpected result! rc=%d\n",rc);
exit(-1);
}
}
10 More Discussions You Might Find Interesting
1. Programming
hi all,
can anyone tell me some good site for the mutithreading tutorials, its application, and some code examples.
-sushil (2 Replies)
Discussion started by: shushilmore
2 Replies
2. Programming
Is there anybody has documents about NPTL
I wanna study about it , but can't find the documents....
anyone help appreciate
:) :) :) (1 Reply)
Discussion started by: alan.zhao
1 Replies
3. Programming
Hello,
i have 2 questions:
1. Can I get the current memory usage of a thread?
2. Can I use a member-function as (void*)(*)(void*) method to create a new thread with "pthread_create(...)"??
I would be happy about any suggestion.
Regards,
Rolf (2 Replies)
Discussion started by: rkasel
2 Replies
4. Programming
Hi all!
I am implementing an http server in c++ using the posix thread, but i am having a memory leak and i cannot find the reason.
I have already commented out the section that initializes the threads and i found out, the problem is when i initialize/run the threads.
In the threads i have... (1 Reply)
Discussion started by: laurovalente
1 Replies
5. Programming
I am facing a strange error while creating posix threads:
Given below are two snippets of code, the first one works whereas the second one gives a garbage value in the output.
Snippet 1
This works:
--------------
int *threadids;
threadids = (int *) malloc (num_threads * sizeof(int));
... (4 Replies)
Discussion started by: kmehta
4 Replies
6. UNIX for Advanced & Expert Users
i am creating threads in my program using the POSIX interface.
when the thread starts executing i run out of memory and get a core dump.
i have tried to increase the threads stack size using pthread_attr_setstacksize, but of no use since i guess the dynamic memory is allocated on the heap and... (1 Reply)
Discussion started by: aniketkadu2002
1 Replies
7. Programming
Hi All,
I have scenario where my callback function data_update() can be called anytime. I have written the function data_update() such that it will create detached thread for processing the data sent to this function.
data_update()
{
pthread_attr_t attr_thread;
... (1 Reply)
Discussion started by: wonderman
1 Replies
8. Programming
Hi All,
I am creating detached threads using pthread_create(). As we know, we need to pass the thread attribute structure as an argument to the pthread_Create() API.
I want to know what is the good time to destroy this thread attributes using pthread_attr_destroy() call. Also, I want to know... (2 Replies)
Discussion started by: wonderman
2 Replies
9. Shell Programming and Scripting
is there a better way to check if a port is active on linux and sunos systems?
this is currently what I'm using in my script:
netstat -an | egrep -i "$PORT"
i know this isn't the best way as there could be numbers in that output that has my port number in it but isn't necessarily a... (0 Replies)
Discussion started by: SkySmart
0 Replies
10. Programming
I want to create a program that creates 2 child process, and each of them creates 2 threads, and each thread prints its thread id. I0ve allread done that the outuput isn't the outuput i want.
When a run the following comand "$./a.out | sort -u | wc -l" I have the folowing output
2
$:
It should... (3 Replies)
Discussion started by: pharaoh
3 Replies
LEARN ABOUT MOJAVE
pthread_create
PTHREAD_CREATE(3) BSD Library Functions Manual PTHREAD_CREATE(3)
NAME
pthread_create -- create a new thread
SYNOPSIS
#include <pthread.h>
int
pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*start_routine)(void *), void *arg);
DESCRIPTION
The pthread_create() function is used to create a new thread, with attributes specified by attr, within a process. If attr is NULL, the
default attributes are used. If the attributes specified by attr are modified later, the thread's attributes are not affected. Upon suc-
cessful completion pthread_create() will store the ID of the created thread in the location specified by thread.
The thread is created executing start_routine with arg as its sole argument. If the start_routine returns, the effect is as if there was an
implicit call to pthread_exit() using the return value of start_routine as the exit status. Note that the thread in which main() was origi-
nally invoked differs from this. When it returns from main(), the effect is as if there was an implicit call to exit() using the return
value of main() as the exit status.
Upon thread exit the storage for the thread must be reclaimed by another thread via a call to pthread_join(). Alternatively,
pthread_detach() may be called on the thread to indicate that the system may automatically reclaim the thread storage upon exit. The
pthread_attr_setdetachstate() function may be used on the attr argument passed to pthread_create() in order to achieve the same effect as a
call to pthread_detach() on the newly created thread.
The signal state of the new thread is initialized as:
o The signal mask is inherited from the creating thread.
o The set of signals pending for the new thread is empty.
RETURN VALUES
If successful, the pthread_create() function will return zero. Otherwise an error number will be returned to indicate the error.
ERRORS
The pthread_create() function will fail if:
[EAGAIN] The system lacked the necessary resources to create another thread, or the system-imposed limit on the total number of
threads in a process [PTHREAD_THREADS_MAX] would be exceeded.
[EPERM] The caller does not have appropriate permission to set the required scheduling parameters or scheduling policy.
[EINVAL] The value specified by attr is invalid.
SEE ALSO
fork(2), pthread_attr(3), pthread_cancel(3), pthread_cleanup_pop(3), pthread_cleanup_push(3), pthread_exit(3), pthread_join(3)
STANDARDS
The pthread_create() function conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').
BSD
March 15, 2014 BSD