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SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
brief: |
Gets the processor affinity of the task.
copyrights:
- Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
- Copyright (C) 1988, 2017 On-Line Applications Research Corporation (OAR)
definition:
default:
attributes: null
body: null
params:
- ${../../type/if/id:/name} ${.:/params[0]/name}
- ${/c/if/size_t:/name} ${.:/params[1]/name}
- ${/c/if/cpu_set_t:/name} *${.:/params[2]/name}
return: ${../../status/if/code:/name}
variants: []
description: |
This directive returns the processor affinity of the task in
${.:/params[2]/name} of the task specified by ${.:/params[0]/name}.
enabled-by: true
index-entries: []
interface-type: function
links:
- role: interface-placement
uid: header
- role: interface-ingroup
uid: group
- role: constraint
uid: /constraint/directive-ctx-isr
- role: constraint
uid: /constraint/directive-ctx-devinit
- role: constraint
uid: /constraint/directive-ctx-task
- role: constraint
uid: /constraint/directive-no-preempt
name: rtems_task_get_affinity
notes: null
params:
- description: |
is the task identifier. The constant ${self-define:/name} may be used to
specify the calling task.
dir: null
name: id
- description: |
is the size of the processor set referenced by ${.:/params[2]/name} in
bytes.
dir: null
name: cpusetsize
- description: |
is the pointer to a ${/c/if/cpu_set_t:/name} object. When the directive
call is successful, the processor affinity set of the task will be stored
in this object. A set bit in the processor set means that the
corresponding processor is in the processor affinity set of the task,
otherwise the bit is cleared.
dir: out
name: cpuset
return:
return: null
return-values:
- description: |
The requested operation was successful.
value: ${../../status/if/successful:/name}
- description: |
The ${.:/params[2]/name} parameter was ${/c/if/null:/name}.
value: ${../../status/if/invalid-address:/name}
- description: |
There was no task associated with the identifier specified by
${.:/params[0]/name}.
value: ${../../status/if/invalid-id:/name}
- description: |
The size specified by ${.:/params[1]/name} of the processor set was too
small for the processor affinity set of the task.
value: ${../../status/if/invalid-size:/name}
- description: |
The task resided on a remote node.
value: ${../../status/if/illegal-on-remote-object:/name}
type: interface
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