void visit(const Nodecl::Symbol& node)
{
TL::Symbol sym = node.get_symbol();
if ((_data_sharing.get_data_sharing(sym, /* check_enclosing */ false) & ~DS_IMPLICIT)
== DS_UNDEFINED)
{
// Mark this as an implicit firstprivate
_data_sharing.set_data_sharing(sym, TL::OpenMP::DataSharingAttribute( DS_FIRSTPRIVATE | DS_IMPLICIT) );
std::cerr << node.get_locus_str() << ": warning: assuming '" << sym.get_qualified_name() << "' as firstprivate" << std::endl;
}
}
void LoweringVisitor::loop_spawn_worksharing(OutlineInfo& outline_info,
Nodecl::NodeclBase construct,
Nodecl::List distribute_environment,
Nodecl::RangeLoopControl& range,
const std::string& outline_name,
TL::Symbol structure_symbol,
TL::Symbol slicer_descriptor,
Nodecl::NodeclBase task_label)
{
Symbol enclosing_function = Nodecl::Utils::get_enclosing_function(construct);
Nodecl::OpenMP::Schedule schedule = distribute_environment.find_first<Nodecl::OpenMP::Schedule>();
ERROR_CONDITION(schedule.is_null(), "Schedule tree is missing", 0);
Nodecl::NodeclBase lower = range.get_lower();
Nodecl::NodeclBase upper = range.get_upper();
Nodecl::NodeclBase step = range.get_step();
Source struct_size, dynamic_size, struct_arg_type_name;
struct_arg_type_name
<< ((structure_symbol.get_type().is_template_specialized_type()
&& structure_symbol.get_type().is_dependent()) ? "typename " : "")
<< structure_symbol.get_qualified_name(enclosing_function.get_scope())
;
struct_size << "sizeof( " << struct_arg_type_name << " )" << dynamic_size;
Source immediate_decl;
allocate_immediate_structure(
structure_symbol.get_user_defined_type(),
outline_info,
struct_arg_type_name,
struct_size,
// out
immediate_decl,
dynamic_size);
Source call_outline_function;
Source schedule_setup;
schedule_setup
<< "int nanos_chunk;"
;
if (schedule.get_text() == "runtime")
{
schedule_setup
<< "nanos_omp_sched_t nanos_runtime_sched;"
<< "nanos_err = nanos_omp_get_schedule(&nanos_runtime_sched, &nanos_chunk);"
<< "if (nanos_err != NANOS_OK)"
<< "nanos_handle_error(nanos_err);"
<< "nanos_ws_t current_ws_policy = nanos_omp_find_worksharing(nanos_runtime_sched);"
;
}
else
{
Source schedule_name;
if (Nanos::Version::interface_is_at_least("openmp", 8))
{
schedule_name << "nanos_omp_sched_" << schedule.get_text();
}
else
{
// We used nanos_omp_sched in versions prior to 8
schedule_name << "omp_sched_" << schedule.get_text();
}
schedule_setup
<< "nanos_ws_t current_ws_policy = nanos_omp_find_worksharing(" << schedule_name << ");"
<< "if (current_ws_policy == 0)"
<< "nanos_handle_error(NANOS_UNIMPLEMENTED);"
<< "nanos_chunk = " << as_expression(schedule.get_chunk()) << ";"
;
}
Source worksharing_creation;
if (IS_CXX_LANGUAGE)
{
worksharing_creation
<< as_statement(Nodecl::CxxDef::make(Nodecl::NodeclBase::null(), slicer_descriptor));
}
worksharing_creation
<< "nanos_err = nanos_worksharing_create("
<< "&" << as_symbol(slicer_descriptor) << ","
<< "current_ws_policy,"
<< "(void**)&nanos_setup_info_loop,"
<< "&single_guard);"
<< "if (nanos_err != NANOS_OK)"
<< "nanos_handle_error(nanos_err);"
;
Nodecl::NodeclBase fill_outline_arguments_tree, fill_immediate_arguments_tree;
TL::Source pm_specific_code;
if (!_lowering->in_ompss_mode())
{
// OpenMP
pm_specific_code
<< immediate_decl
<< statement_placeholder(fill_immediate_arguments_tree)
<< "smp_" << outline_name << "(imm_args);"
;
}
else
{
// OmpSs
std::string wd_description =
(!task_label.is_null()) ? task_label.get_text() : enclosing_function.get_name();
Source const_wd_info;
const_wd_info
<< fill_const_wd_info(struct_arg_type_name,
/* is_untied */ false,
/* mandatory_creation */ true,
/* is_function_task */ false,
wd_description,
outline_info,
construct);
std::string dyn_props_var = "nanos_wd_dyn_props";
Source dynamic_wd_info;
dynamic_wd_info << "nanos_wd_dyn_props_t " << dyn_props_var << ";";
fill_dynamic_properties(dyn_props_var,
/* priority_expr */ nodecl_null(), /* final_expr */ nodecl_null(), /* is_implicit */ 0, dynamic_wd_info);
pm_specific_code
<< struct_arg_type_name << " *ol_args = (" << struct_arg_type_name <<"*) 0;"
<< const_wd_info
<< "nanos_wd_t nanos_wd_ = (nanos_wd_t) 0;"
<< dynamic_wd_info
<< "static nanos_slicer_t replicate = (nanos_slicer_t)0;"
<< "if (replicate == (nanos_slicer_t)0)"
<< "replicate = nanos_find_slicer(\"replicate\");"
<< "if (replicate == (nanos_slicer_t)0)"
<< "nanos_handle_error(NANOS_UNIMPLEMENTED);"
<< "nanos_err = nanos_create_sliced_wd(&nanos_wd_, "
<< "nanos_wd_const_data.base.num_devices, nanos_wd_const_data.devices, "
<< "(size_t)" << struct_size << ", nanos_wd_const_data.base.data_alignment, "
<< "(void**)&ol_args, nanos_current_wd(), replicate,"
<< "&nanos_wd_const_data.base.props, &" << dyn_props_var << ", 0, (nanos_copy_data_t**)0,"
<< "0, (nanos_region_dimension_internal_t**)0"
<< ");"
<< "if (nanos_err != NANOS_OK)"
<< "nanos_handle_error(nanos_err);"
<< statement_placeholder(fill_outline_arguments_tree)
<< "nanos_err = nanos_submit(nanos_wd_, 0, (nanos_data_access_t *) 0, (nanos_team_t) 0);"
<< "if (nanos_err != NANOS_OK)"
<< "nanos_handle_error(nanos_err);"
;
}
TL::Source implicit_barrier_or_tw;
if (!distribute_environment.find_first<Nodecl::OpenMP::BarrierAtEnd>().is_null())
{
implicit_barrier_or_tw << get_implicit_sync_end_construct_source();
}
Source spawn_code;
spawn_code
<< "{"
<< as_type(get_bool_type()) << " single_guard;"
<< "nanos_err_t nanos_err;"
<< schedule_setup
<< "nanos_ws_info_loop_t nanos_setup_info_loop;"
<< "nanos_setup_info_loop.lower_bound = " << as_expression(lower) << ";"
<< "nanos_setup_info_loop.upper_bound = " << as_expression(upper) << ";"
<< "nanos_setup_info_loop.loop_step = " << as_expression(step) << ";"
<< "nanos_setup_info_loop.chunk_size = nanos_chunk;"
<< worksharing_creation
<< pm_specific_code
<< implicit_barrier_or_tw
<< "}"
;
Source fill_outline_arguments, fill_immediate_arguments;
fill_arguments(construct, outline_info, fill_outline_arguments, fill_immediate_arguments);
if (IS_FORTRAN_LANGUAGE)
Source::source_language = SourceLanguage::C;
Nodecl::NodeclBase spawn_code_tree = spawn_code.parse_statement(construct);
if (IS_FORTRAN_LANGUAGE)
Source::source_language = SourceLanguage::Current;
Nodecl::NodeclBase arguments_tree;
TL::Source *fill_arguments;
if (!_lowering->in_ompss_mode())
{
// OpenMP
arguments_tree = fill_immediate_arguments_tree;
fill_arguments = &fill_immediate_arguments;
}
else
{
// OmpSs
arguments_tree = fill_outline_arguments_tree;
fill_arguments = &fill_outline_arguments;
}
// Now attach the slicer symbol to its final scope (see tl-lower-for-worksharing.cpp)
const decl_context_t* spawn_inner_context = arguments_tree.retrieve_context().get_decl_context();
slicer_descriptor.get_internal_symbol()->decl_context = spawn_inner_context;
::insert_entry(spawn_inner_context->current_scope, slicer_descriptor.get_internal_symbol());
// Parse the arguments
Nodecl::NodeclBase new_tree = fill_arguments->parse_statement(arguments_tree);
arguments_tree.replace(new_tree);
// Finally, replace the construct by the tree that represents the spawn code
construct.replace(spawn_code_tree);
}