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ext.cpp
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ext.cpp
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#include <boost/python/module.hpp>
#include <boost/python/scope.hpp>
#include <boost/python/class.hpp>
#include <boost/python/def.hpp>
#include <boost/python/tuple.hpp>
#include <omptbx/omp_or_stubs.h>
namespace omptbx { namespace boost_python { namespace {
void
set_num_threads(int num_threads) { omp_set_num_threads(num_threads); }
int
get_num_threads() { return omp_get_num_threads(); }
int
get_max_threads() { return omp_get_max_threads(); }
int
get_num_procs() { return omp_get_num_procs(); }
int
get_dynamic() { return omp_get_dynamic(); }
void
set_dynamic(int dynamic_threads) { omp_set_dynamic(dynamic_threads); }
int
get_nested() { return omp_get_nested(); }
void
set_nested(int nested) { omp_set_nested(nested); }
void
tst_parallel(){
#pragma omp parallel for
for (int ix = 0; ix<omp_get_num_threads(); ++ix){
int tid = omp_get_thread_num();
printf("Hello world from omp thread %d of %d\n", tid, omp_get_num_threads());
}
}
boost::python::tuple
tst_environment()
{
int foo=0, bar=0;
int m,n;
#pragma omp parallel sections reduction(+:foo)
{
m = omp_get_num_threads();
#pragma omp section
{
foo += 1;
}
#pragma omp section
{
foo += 1;
}
#pragma omp section
{
foo += 1;
}
#pragma omp section
{
foo += 1;
}
}
#if defined(_OPENMP) && _OPENMP <= 199819
omp_set_num_threads(4);
#pragma omp parallel sections reduction(+:bar)
#else
#pragma omp parallel sections reduction(+:bar) \
num_threads(4)
#endif
{
n = omp_get_num_threads();
#pragma omp section
{
bar += 1;
}
#pragma omp section
{
bar += 1;
}
#pragma omp section
{
bar += 1;
}
#pragma omp section
{
bar += 1;
}
}
return boost::python::make_tuple(foo,m, bar,n);
}
void
init_module()
{
using namespace boost::python;
scope s;
#if defined(OMPTBX_HAVE_OMP_H)
s.attr("omp_version") = _OPENMP;
s.attr("have_stubs_h") = false;
s.attr("have_omp_h") = true;
#else
s.attr("omp_version") = object();
s.attr("have_stubs_h") = true;
s.attr("have_omp_h") = false;
#endif
def("omp_set_num_threads", set_num_threads);
def("omp_get_num_threads", get_num_threads);
def("omp_get_max_threads", get_max_threads);
def("omp_get_num_procs", get_num_procs);
def("omp_get_dynamic", get_dynamic);
def("omp_set_dynamic", set_dynamic);
def("omp_get_nested", get_nested);
def("omp_set_nested", set_nested);
def("tst_environment", &tst_environment);
def("tst_parallel", &tst_parallel);
}
}}} // namespace omptbx::boost_python::<anonymous>
BOOST_PYTHON_MODULE(omptbx_ext)
{
omptbx::boost_python::init_module();
}