CODEWITHSUNDEEP
cpthreads
user2040136
user2040136

Reputation: 31

How to reuse threads using pthread_exit()

My computer allows 380 threads per process, which is fine for me. I have no problem when I call 380 times to function sdfpthread_create (). But successive call returns the erro 11 (Resource temporarily unavailable).

The apparent solution is to use the pthread_exit (), but I did not solve the problem, the limit is still 380 threads created.

How I can reuse thread?



    #include <stdio.h>
    #include <string.h>
    #include <pthread.h>
    #include <stdlib.h>
    #include <unistd.h>


    void *doSomeThing()
    {
        sleep(99);
        pthread_exit(NULL);
    }

    int main(void)
    {
        pthread_t tid;
        int i;
        int err;

        /* Create threads */
        for (i=0; i<380; ++i)  {
            err = pthread_create(&tid, NULL, doSomeThing, NULL);
            if (err != 0)
                printf("\n1) Can't create thread :[%s]", strerror(err));
        }

        sleep(1);

        /* Reuse threads */
        for (i=0; i<5; ++i)  {
            err = pthread_create(&tid, NULL, doSomeThing, NULL);
            if (err != 0)
                printf("\n2) Can't create thread :[%s]", strerror(err));
        }

        exit(0);
    }

Upvotes: 2

Views: 637

Answers (1)

Nikolai Fetissov
Nikolai Fetissov

Reputation: 84151

You need to call pthread_join(3) to actually cleanup thread exit state, or create threads that are not joinable.

Edi 0:

Please see and read:

Upvotes: 4

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