POSIX Thread Tutorial

                              \ //      workers terminate

                                |

                                |        join workers with pthread_join()

                                |

                          Master Thread

Starting from an initial thread in main(), we'll create several worker threads. Each of these will print its message while the original thread waits for them to complete. As each one exits, the master thread will join it and destroy the system resources it uses. Finally, the original thread will call exit() and the whole process will terminate.

Here's the hello world program (click here for source):

 1: /******************************************************************

 2:  * simple.c -- multithreaded "hello world"

 3:  *

 4:  * Author: Mark Hays 

 5:  */

 6: 

 7: /* Linux with glibc:

 8:  *   _REENTRANT to grab thread-safe libraries

 9:  *   _POSIX_SOURCE to get POSIX semantics

10:  */

11: #ifdef __linux__

12: #  define _REENTRANT

13: #  define _POSIX_SOURCE

14: #endif

15: 

16: /* Hack for LinuxThreads */

17: #ifdef __linux__

18: #  define _P __P

19: #endif

20: 

21: #include 

22: 

23: #include    /* for strerror() */

24: 

25: #include 

26: 

27: #define NTHREADS 4

28: 

29: #define errexit(code,str)                          \

30:   


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