omp_get_thread_num – Current thread ID

Description:

Returns a unique thread identification number within the current team. In a sequential parts of the program, omp_get_thread_num always returns 0. In parallel regions the return value varies from 0 to omp_get_num_threads -1 inclusive. The return value of the primary thread of a team is always 0.

C/C++:

Prototype:

int omp_get_thread_num(void);

Fortran:

Interface:

integer function omp_get_thread_num()

See also:

omp_get_num_threads – Size of the active team, omp_get_ancestor_thread_num – Ancestor thread ID

Reference:

OpenMP specification v4.5, Section 3.2.4.