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SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
brief: |
Task create extensions are invoked when a task is created.
copyrights:
- Copyright (C) 2009, 2021 embedded brains GmbH (http://www.embedded-brains.de)
definition:
default: ${/score/userext/if/thread-create:/name} ${.:/name}
variants: []
description: null
enabled-by: true
index-entries: []
interface-type: typedef
links:
- role: interface-placement
uid: header
- role: interface-ingroup
uid: group
- role: constraint
uid: /constraint/thread-dispatching-disabled-init
- role: constraint
uid: /constraint/thread-dispatching-enabled-multitasking
- role: constraint
uid: ../constraint/object-allocator-system
- role: constraint
uid: ../constraint/object-allocator-task-create
- role: constraint
uid: ../constraint/object-allocator-task-construct
- role: constraint
uid: ../constraint/object-allocator-pthread-create
name: rtems_task_create_extension
notes: |
The task create extensions are invoked in
${/glossary/extension-forward-order:/term}.
The task create extensions are invoked after a new task has been completely
initialized, but before it is started.
While normal tasks are created, the executing thread is the owner of the
object allocator mutex. The object allocator mutex allows nesting, so the
normal memory allocation routines can be used allocate memory for the created
thread.
If the task create extension returns ${/c/if/false:/name}, then the task
create operation stops immediately and the entire task create operation will
fail. In this case, all task delete extensions are invoked, see
${task-delete:/name}.
params:
- description: |
is the ${/glossary/tcb:/term} of the executing thread. When the idle
thread is created, the executing thread is equal to ${/c/if/null:/name}.
dir: null
name: executing
- description: |
is the ${/glossary/tcb:/term} of the created thread.
dir: null
name: created
return:
return: |
Returns true, if the task create extension was successful, otherwise false.
return-values: []
type: interface
|
