hwloc_backend Struct Reference

#include <plugins.h>

Data Fields
unsigned long	flags
int	is_custom
int	is_thissystem
void *	private_data
void(*	disable )(struct hwloc_backend *backend)
int(*	discover )(struct hwloc_backend *backend)
int(*	get_obj_cpuset )(struct hwloc_backend *backend, struct hwloc_backend *caller, struct hwloc_obj *obj, hwloc_bitmap_t cpuset)
int(*	notify_new_object )(struct hwloc_backend *backend, struct hwloc_backend *caller, struct hwloc_obj *obj)

Detailed Description

Discovery backend structure.

A backend is the instantiation of a discovery component. When a component gets enabled for a topology, its instantiate() callback creates a backend.

hwloc_backend_alloc() initializes all fields to default values that the component may change (except "component" and "next") before enabling the backend with hwloc_backend_enable().

Field Documentation

void(* hwloc_backend::disable)(struct hwloc_backend *backend)

Callback for freeing the private_data. May be NULL.

int(* hwloc_backend::discover)(struct hwloc_backend *backend)

Main discovery callback. returns > 0 if it modified the topology tree, -1 on error, 0 otherwise. May be NULL if type is HWLOC_DISC_COMPONENT_TYPE_MISC.

unsigned long hwloc_backend::flags

Backend flags, as an OR'ed set of HWLOC_BACKEND_FLAG_*.

int(* hwloc_backend::get_obj_cpuset)(struct hwloc_backend *backend, struct hwloc_backend *caller, struct hwloc_obj *obj, hwloc_bitmap_t cpuset)

Callback used by the PCI backend to retrieve the locality of a PCI object from the OS/cpu backend. May be NULL.

int hwloc_backend::is_custom

Backend-specific 'is_custom' property. Shortcut on !strcmp(..->component->name, "custom"). Only the custom component should touch this.

int hwloc_backend::is_thissystem

Backend-specific 'is_thissystem' property. Set to 0 or 1 if the backend should enforce the thissystem flag when it gets enabled. Set to -1 if the backend doesn't care (default).

int(* hwloc_backend::notify_new_object)(struct hwloc_backend *backend, struct hwloc_backend *caller, struct hwloc_obj *obj)

Callback called by backends to notify this backend that a new object was added. returns > 0 if it modified the topology tree, 0 otherwise. May be NULL.

void* hwloc_backend::private_data

Backend private data, or NULL if none.

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

• plugins.h