#include <parallel_do.h>

Inheritance diagram for tbb::interface9::internal::do_group_task_input< Body, Item >:

Collaboration diagram for tbb::interface9::internal::do_group_task_input< Body, Item >:

Private Types
typedef parallel_do_feeder_impl< Body, Item >	feeder_type

Private Member Functions
	do_group_task_input (feeder_type &feeder)

task *	execute () __TBB_override
	Should be overridden by derived classes.

	~do_group_task_input ()

Private Attributes
feeder_type &	my_feeder

size_t	my_size

aligned_space< Item, max_arg_size >	my_arg

Static Private Attributes
static const size_t	max_arg_size = 4

Friends
template<typename Iterator_ , typename Body_ , typename Item_ >
class	do_task_iter

Additional Inherited Members
Public Types inherited from tbb::task
enum	state_type { executing , reexecute , ready , allocated , freed , recycle }
	Enumeration of task states that the scheduler considers. More...

typedef internal::affinity_id	affinity_id
	An id as used for specifying affinity.

Public Member Functions inherited from tbb::task
virtual	~task ()
	Destructor.

virtual task *	execute ()=0
	Should be overridden by derived classes.

internal::allocate_continuation_proxy &	allocate_continuation ()
	Returns proxy for overloaded new that allocates a continuation task of *this.

internal::allocate_child_proxy &	allocate_child ()
	Returns proxy for overloaded new that allocates a child task of *this.

void	recycle_as_continuation ()
	Change this to be a continuation of its former self.

void	recycle_as_safe_continuation ()
	Recommended to use, safe variant of recycle_as_continuation.

void	recycle_as_child_of (task &new_parent)
	Change this to be a child of new_parent.

void	recycle_to_reexecute ()
	Schedule this for reexecution after current execute() returns.

void	set_ref_count (int count)
	Set reference count.

void	increment_ref_count ()
	Atomically increment reference count.

int	add_ref_count (int count)
	Atomically adds to reference count and returns its new value.

int	decrement_ref_count ()
	Atomically decrement reference count and returns its new value.

void	spawn_and_wait_for_all (task &child)
	Similar to spawn followed by wait_for_all, but more efficient.

void __TBB_EXPORTED_METHOD	spawn_and_wait_for_all (task_list &list)
	Similar to spawn followed by wait_for_all, but more efficient.

void	wait_for_all ()
	Wait for reference count to become one, and set reference count to zero.

task *	parent () const
	task on whose behalf this task is working, or NULL if this is a root.

void	set_parent (task *p)
	sets parent task pointer to specified value

task_group_context *	context ()
	This method is deprecated and will be removed in the future.

task_group_context *	group ()
	Pointer to the task group descriptor.

bool	is_stolen_task () const
	True if task was stolen from the task pool of another thread.

bool	is_enqueued_task () const
	True if the task was enqueued.

state_type	state () const
	Current execution state.

int	ref_count () const
	The internal reference count.

bool __TBB_EXPORTED_METHOD	is_owned_by_current_thread () const
	Obsolete, and only retained for the sake of backward compatibility. Always returns true.

void	set_affinity (affinity_id id)
	Set affinity for this task.

affinity_id	affinity () const
	Current affinity of this task.

virtual void __TBB_EXPORTED_METHOD	note_affinity (affinity_id id)
	Invoked by scheduler to notify task that it ran on unexpected thread.

void __TBB_EXPORTED_METHOD	change_group (task_group_context &ctx)
	Moves this task from its current group into another one.

bool	cancel_group_execution ()
	Initiates cancellation of all tasks in this cancellation group and its subordinate groups.

bool	is_cancelled () const
	Returns true if the context has received cancellation request.

__TBB_DEPRECATED void	set_group_priority (priority_t p)
	Changes priority of the task group this task belongs to.

__TBB_DEPRECATED priority_t	group_priority () const
	Retrieves current priority of the task group this task belongs to.

Static Public Member Functions inherited from tbb::task
static internal::allocate_root_proxy	allocate_root ()
	Returns proxy for overloaded new that allocates a root task.

static internal::allocate_root_with_context_proxy	allocate_root (task_group_context &ctx)
	Returns proxy for overloaded new that allocates a root task associated with user supplied context.

static void	spawn_root_and_wait (task &root)
	Spawn task allocated by allocate_root, wait for it to complete, and deallocate it.

static void	spawn_root_and_wait (task_list &root_list)
	Spawn root tasks on list and wait for all of them to finish.

static void	enqueue (task &t)
	Enqueue task for starvation-resistant execution.

static void	enqueue (task &t, priority_t p)
	Enqueue task for starvation-resistant execution on the specified priority level.

static void	enqueue (task &t, task_arena &arena, priority_t p=priority_t(0))
	Enqueue task in task_arena.

static task &__TBB_EXPORTED_FUNC	self ()
	The innermost task being executed or destroyed by the current thread at the moment.

Protected Member Functions inherited from tbb::task
	task ()
	Default constructor.

Detailed Description

template<typename Body, typename Item>
class tbb::interface9::internal::do_group_task_input< Body, Item >

Definition at line 249 of file parallel_do.h.

Member Typedef Documentation

◆ feeder_type

template<typename Body , typename Item >

typedef parallel_do_feeder_impl<Body, Item> tbb::interface9::internal::do_group_task_input< Body, Item >::feeder_type

private

Definition at line 253 of file parallel_do.h.

Constructor & Destructor Documentation

◆ do_group_task_input()

template<typename Body , typename Item >

tbb::interface9::internal::do_group_task_input< Body, Item >::do_group_task_input ( feeder_type & feeder )

inlineprivate

Definition at line 259 of file parallel_do.h.

260 : my_feeder(feeder), my_size(0)

261 {}

tbb::interface9::internal::do_group_task_input::my_feeder

feeder_type & my_feeder

Definition parallel_do.h:255

tbb::interface9::internal::do_group_task_input::my_size

size_t my_size

Definition parallel_do.h:256

◆ ~do_group_task_input()

template<typename Body , typename Item >

tbb::interface9::internal::do_group_task_input< Body, Item >::~do_group_task_input ( )

inlineprivate

Definition at line 286 of file parallel_do.h.

                              {
            for( size_t k=0; k<my_size; ++k)
                (my_arg.begin() + k)->~Item();
        }

References tbb::interface9::internal::do_group_task_input< Body, Item >::my_arg, and tbb::interface9::internal::do_group_task_input< Body, Item >::my_size.

Member Function Documentation

◆ execute()

template<typename Body , typename Item >

task * tbb::interface9::internal::do_group_task_input< Body, Item >::execute ( )

inlineprivatevirtual

Should be overridden by derived classes.

Implements tbb::task.

Definition at line 263 of file parallel_do.h.

        {
#if __TBB_CPP11_RVALUE_REF_PRESENT
            typedef std::move_iterator<Item*> Item_iterator;
#else
            typedef Item* Item_iterator;
#endif
            typedef do_iteration_task_iter<Item_iterator, Body, Item> iteration_type;
            __TBB_ASSERT( my_size>0, NULL );
            task_list list;
            task* t;
            size_t k=0;
            for(;;) {
                t = new( allocate_child() ) iteration_type( Item_iterator(my_arg.begin() + k), my_feeder );
                if( ++k==my_size ) break;
                list.push_back(*t);
            }
            set_ref_count(int(k+1));
            spawn(list);
            spawn_and_wait_for_all(*t);
            return NULL;
        }