omp_get_max_threads

Returns an integer that is equal to or greater than the number of threads that would be available if a parallel region without num_threads were defined at that point in the code.

int omp_get_max_threads( )

Remarks

For more information, see 3.1.3 omp_get_max_threads Function.

Example

// omp_get_max_threads.cpp
// compile with: /openmp
#include <stdio.h>
#include <omp.h>

int main( ) 
{
    omp_set_num_threads(8);
    printf_s("%d\n", omp_get_max_threads( ));
    #pragma omp parallel
        #pragma omp master
        {
            printf_s("%d\n", omp_get_max_threads( ));
        }

    printf_s("%d\n", omp_get_max_threads( ));

    #pragma omp parallel num_threads(3)
        #pragma omp master
        {
            printf_s("%d\n", omp_get_max_threads( ));
        }

    printf_s("%d\n", omp_get_max_threads( ));
}

8
8
8
8
8

See Also

Concepts

OpenMP Functions