97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
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/****************************************************************************
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* sched/group_foreachchild.c
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/sched.h>
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#include "group_internal.h"
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#ifdef HAVE_GROUP_MEMBERS
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: group_foreachchild
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*
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* Description:
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* Execute a function for each child of a group.
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*
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* Parameters:
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* group - The group containing the children
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* handler - The function to be called
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* arg - An additional argument to provide to the handler
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*
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* Return Value:
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* Success (OK) is always returned unless the handler returns a non-zero
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* value (a negated errno on errors). In that case, the traversal
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* terminates and that non-zero value is returned.
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*
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* Assumptions:
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*
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****************************************************************************/
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int group_foreachchild(FAR struct task_group_s *group,
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foreachchild_t handler, FAR void *arg)
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{
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int ret;
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int i;
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DEBUGASSERT(group);
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for (i = 0; i < group->tg_nmembers; i++)
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{
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ret = handler(group->tg_members[i], arg);
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if (ret != 0)
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{
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return ret;
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}
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}
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return 0;
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}
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#endif /* HAVE_GROUP_MEMBERS */
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