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Hands-On System Programming with Linux
book

Hands-On System Programming with Linux

by Kaiwan N. Billimoria, Tigran Aivazian
October 2018
Beginner content levelBeginner
794 pages
19h 23m
English
Packt Publishing
Content preview from Hands-On System Programming with Linux

The return of the ghost

There is still a hidden problem. Let's do some more experimentation: let's write a third version of this program (let's call it ch14/pthreads3.c). In it, we say, what if the worker threads take longer to perform their work (than they are currently taking)? We can easily simulate this with a simple sleep(3) function, which is going to be introduced into the worker routine:

[...]void * worker(void *data){      long datum = (long)data;      printf("Worker thread #%ld running ...\n", datum);      sleep(3);      printf("#%ld: work done, exiting now\n", datum);      pthread_exit(NULL);}[...]

Let's try it out:

$ ./pthreads3 Worker thread #0 running ...Worker thread #1 running ...Worker thread #2 running ...[... All three threads sleep for 3s ...] ...
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Publisher Resources

ISBN: 9781788998475Supplemental Content