PAPI_thread_id - Man Page

Return values

This function returns a valid thread identifier. It calls the function registered with PAPI through a call to PAPI_thread_init().

unsigned long tid;

if ((tid = PAPI_thread_id()) == (unsigned long int)-1 )
    exit(1);

printf("Initial thread id is: %lu\n", tid );

See also

PAPI_thread_init

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