madness::TaskAttributes Class Reference

Contains attributes of a task. More...

#include <thread.h>

Inheritance diagram for madness::TaskAttributes:

Public Member Functions
	TaskAttributes (const TaskAttributes &attr)
	Copy constructor.
	TaskAttributes (unsigned long flags=0)
	Sets the attributes to the desired values.
virtual	~TaskAttributes ()
int	get_nthread () const
	Get the number of threads.
bool	is_generator () const
	Test if the generator attribute is true.
bool	is_high_priority () const
	Test if the high priority attribute is true.
bool	is_stealable () const
	Test if the stealable attribute is true.
template<typename Archive >
void	serialize (Archive &ar)
	Serializes the attributes for I/O.
TaskAttributes &	set_generator (bool generator_hint)
	Sets the generator attribute.
TaskAttributes &	set_highpriority (bool hipri)
	Sets the high priority attribute.
void	set_nthread (int nthread)
	Set the number of threads.
TaskAttributes &	set_stealable (bool stealable)
	Sets the stealable attribute.

Static Public Member Functions
static TaskAttributes	generator ()
static TaskAttributes	hipri ()
static TaskAttributes	multi_threaded (int nthread)

Static Public Attributes
static const unsigned long	GENERATOR = 1ul<<8
	Mask for generator bit.
static const unsigned long	HIGHPRIORITY = GENERATOR<<2
	Mask for priority bit.
static const unsigned long	NTHREAD = 0xff
	Mask for nthread byte.
static const unsigned long	STEALABLE = GENERATOR<<1
	Mask for stealable bit.

Private Attributes
unsigned long	flags
	Byte-string storing the specified attributes.

Detailed Description

Contains attributes of a task.

The current attributes are:

• generator : Setting this hints that a task will produce additional tasks and is used by the scheduler to increase/throttle parallelism. The default is false.
• stealable : Setting this indicates that a task may be migrated to another process for dynamic load balancing. The default value is false.
• highpriority : indicates a high priority task. The default value is false.
• nthread : indicates number of threads. 0 threads is interpreted as 1 thread for backward compatibility and ease of specifying defaults. The default value is 0 (==1).

Constructor & Destructor Documentation

TaskAttributes() [1/2]

madness::TaskAttributes::TaskAttributes ( unsigned long  flags = 0 )

inlineexplicit

Sets the attributes to the desired values.

flags, if unspecified sets all attributes to their default values.

Parameters

[in]

flags

The attribute values.

TaskAttributes() [2/2]

madness::TaskAttributes::TaskAttributes ( const TaskAttributes &  attr )

inline

Copy constructor.

Parameters

[in]

attr

The attributes to copy.

~TaskAttributes()

virtual madness::TaskAttributes::~TaskAttributes ( )

inlinevirtual

Member Function Documentation

generator()

static TaskAttributes madness::TaskAttributes::generator ( )

inlinestatic

Todo:

Brief description needed.

Todo:

Descriptions needed.

Returns

Description needed.

References GENERATOR.

Referenced by madness::FunctionImpl< T, NDIM >::truncate_spawn().

get_nthread()

int madness::TaskAttributes::get_nthread ( ) const

inline

Get the number of threads.

Returns

The number of threads.

References flags, and NTHREAD.

Referenced by TestBarrier::TestBarrier(), TimeBarrier::TimeBarrier(), madness::PoolTaskInterface::execute(), and madness::PoolTaskInterface::set_nthread().

hipri()

static TaskAttributes madness::TaskAttributes::hipri ( )

inlinestatic

Todo:

Brief description needed.

Todo:

Descriptions needed.

Returns

Description needed.

References HIGHPRIORITY.

Referenced by madness::CoeffTracker< T, NDIM >::activate(), madness::FunctionImpl< T, NDIM >::apply_1d_realspace_push_op(), madness::WorldGopInterface::bcast_handler(), madness::WorldGopInterface::bcast_internal(), madness::WorldGopInterface::bcast_internal(), madness::FunctionImpl< T, NDIM >::diff(), madness::FunctionImpl< T, NDIM >::dirac_convolution_op(), madness::FunctionImpl< T, NDIM >::do_apply_kernel(), madness::FunctionImpl< T, NDIM >::do_apply_kernel2(), madness::FunctionImpl< T, NDIM >::do_apply_kernel3(), madness::FunctionImpl< T, NDIM >::do_project_out(), madness::FunctionImpl< T, NDIM >::eval(), madness::FunctionImpl< T, NDIM >::evaldepthpt(), madness::FunctionImpl< T, NDIM >::evalR(), madness::FunctionImpl< T, NDIM >::find_me(), madness::DerivativeBase< T, NDIM >::find_neighbor(), madness::DerivativeBase< T, NDIM >::forward_do_diff1(), madness::FunctionImpl< T, NDIM >::get_norm_tree_recursive(), madness::WorldGopInterface::group_bcast_handler(), madness::WorldGopInterface::lazy_sync(), madness::WorldGopInterface::lazy_sync(), madness::WorldGopInterface::lazy_sync_internal(), madness::FunctionImpl< T, NDIM >::project_out_op< LDIM >::operator()(), madness::FunctionImpl< T, NDIM >::partial_inner_contract(), madness::FunctionImpl< T, NDIM >::project_out2(), madness::WorldGopInterface::reduce_internal(), madness::FunctionImpl< T, NDIM >::refine(), madness::FunctionImpl< T, NDIM >::refine_spawn(), madness::WorldGopInterface::send_internal(), madness::WorldGopInterface::send_internal(), set_highpriority(), madness::FunctionImpl< T, NDIM >::sock_it_to_me(), madness::FunctionImpl< T, NDIM >::sock_it_to_me_too(), and madness::FunctionImpl< T, NDIM >::truncate_reconstructed_spawn().

is_generator()

bool madness::TaskAttributes::is_generator ( ) const

inline

Test if the generator attribute is true.

Returns

True if this task is a generator, false otherwise.

References flags, and GENERATOR.

is_high_priority()

bool madness::TaskAttributes::is_high_priority ( ) const

inline

Test if the high priority attribute is true.

Returns

True if this task is a high priority, false otherwise.

References flags, and HIGHPRIORITY.

is_stealable()

bool madness::TaskAttributes::is_stealable ( ) const

inline

Test if the stealable attribute is true.

Returns

True if this task is stealable, false otherwise.

References flags, and STEALABLE.

multi_threaded()

static TaskAttributes madness::TaskAttributes::multi_threaded ( int  nthread )

inlinestatic

Todo:

Brief description needed.

Todo:

Descriptions needed.

Returns

Description needed.

References set_nthread().

Referenced by test_multi().

serialize()

template<typename Archive >

void madness::TaskAttributes::serialize ( Archive &  ar )

inline

Serializes the attributes for I/O.

tparam Archive The archive type.

Parameters

[in,out]

ar

The archive.

References flags.

set_generator()

TaskAttributes & madness::TaskAttributes::set_generator ( bool  generator_hint )

inline

Sets the generator attribute.

Parameters

[in]

generator_hint

The new value for the generator attribute.

References flags, and GENERATOR.

set_highpriority()

TaskAttributes & madness::TaskAttributes::set_highpriority ( bool  hipri )

inline

Sets the high priority attribute.

Parameters

[in]

hipri

The new value for the high priority attribute.

References flags, HIGHPRIORITY, and hipri().

set_nthread()

void madness::TaskAttributes::set_nthread ( int  nthread )

inline

Set the number of threads.

Attention

Are you sure this is what you want to call? Only call this for a TaskAttributes that is not a base class of a task object. If you are trying to set the number of threads in an existing task you should call TaskInterface::set_nthread() instead. No doubt there is some virtual/protected/something voodoo to prevent you from doing harm.

Todo:

Perhaps investigate a way to make this function only accessible from the intended functions (using the so-called voodoo)?

Parameters

[in]

nthread

The new number of threads.

References flags, MADNESS_ASSERT, and NTHREAD.

Referenced by madness::SystolicMatrixAlgorithm< T >::SystolicMatrixAlgorithm(), multi_threaded(), and madness::PoolTaskInterface::set_nthread().

set_stealable()

TaskAttributes & madness::TaskAttributes::set_stealable ( bool  stealable )

inline

Sets the stealable attribute.

Parameters

[in]

stealable

The new value for the stealable attribute.

References flags, and STEALABLE.

Referenced by main().

Member Data Documentation

flags

unsigned long madness::TaskAttributes::flags

private

Byte-string storing the specified attributes.

Referenced by get_nthread(), is_generator(), is_high_priority(), is_stealable(), serialize(), set_generator(), set_highpriority(), set_nthread(), and set_stealable().

GENERATOR

const unsigned long madness::TaskAttributes::GENERATOR = 1ul<<8

static

Mask for generator bit.

Referenced by generator(), is_generator(), and set_generator().

HIGHPRIORITY

const unsigned long madness::TaskAttributes::HIGHPRIORITY = GENERATOR<<2

static

Mask for priority bit.

Referenced by hipri(), is_high_priority(), and set_highpriority().

NTHREAD

const unsigned long madness::TaskAttributes::NTHREAD = 0xff

static

Mask for nthread byte.

Referenced by get_nthread(), and set_nthread().

STEALABLE

const unsigned long madness::TaskAttributes::STEALABLE = GENERATOR<<1

static

Mask for stealable bit.

Referenced by is_stealable(), and set_stealable().

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The documentation for this class was generated from the following file:

• thread.h