Components and Plugins: Discovery backends

Data Structures
struct	hwloc_backend

Enumerations
enum	hwloc_backend_flag_e { HWLOC_BACKEND_FLAG_NEED_LEVELS }

Functions
HWLOC_DECLSPEC struct hwloc_backend *	hwloc_backend_alloc (struct hwloc_disc_component *component)
HWLOC_DECLSPEC int	hwloc_backend_enable (struct hwloc_topology *topology, struct hwloc_backend *backend)
HWLOC_DECLSPEC int	hwloc_backends_get_obj_cpuset (struct hwloc_backend *caller, struct hwloc_obj *obj, hwloc_bitmap_t cpuset)
HWLOC_DECLSPEC int	hwloc_backends_notify_new_object (struct hwloc_backend *caller, struct hwloc_obj *obj)

Detailed Description

Enumeration Type Documentation

enum hwloc_backend_flag_e

Backend flags.

Enumerator
HWLOC_BACKEND_FLAG_NEED_LEVELS	Levels should be reconnected before this backend discover() is used.

Function Documentation

HWLOC_DECLSPEC struct hwloc_backend* hwloc_backend_alloc

(

struct hwloc_disc_component *

component

)

Allocate a backend structure, set good default values, initialize backend->component and topology, etc. The caller will then modify whatever needed, and call hwloc_backend_enable().

HWLOC_DECLSPEC int hwloc_backend_enable	(	struct hwloc_topology *	topology,
		struct hwloc_backend *	backend
	)

Enable a previously allocated and setup backend.

HWLOC_DECLSPEC int hwloc_backends_get_obj_cpuset	(	struct hwloc_backend *	caller,
		struct hwloc_obj *	obj,
		hwloc_bitmap_t	cpuset
	)

Used by backends discovery callbacks to request locality information from others.

Traverse the list of enabled backends until one has a get_obj_cpuset() method, and call it.

HWLOC_DECLSPEC int hwloc_backends_notify_new_object	(	struct hwloc_backend *	caller,
		struct hwloc_obj *	obj
	)

Used by backends discovery callbacks to notify other backends of new objects.

Traverse the list of enabled backends (all but caller) and invoke their notify_new_object() method to notify them that a new object just got added to the topology.

Currently only used for notifying of new PCI device objects.