Simple thread counting-group example
The following example has two threads in a counting-group. The body of the auxiliary thread's initialization routine is the same as in the previous example.
main()
{
... same initialization as in previous example ...
pm_set_program_mygroup(&prog); /* create counting group */
(1) pm_start_mygroup()
pthread_create(&threadid, &attr, doit, NULL)
(2) pm_start_mythread();
... usefull work ....
pm_stop_mythread();
pm_get_data_mythread(&data)
... print main thread results ...
pthread_join(threadid, &status);
... print auxiliary thread results ...
pm_get_data_mygroup(&data)
... print group results ...
}In the preceding example, the call in (2) is necessary because the call in (1) only turns on counting for the group, not the individual threads in it. At the end, the group results are the sum of both threads results.