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- /****************************************************************************
- * sched/group/group_foreachchild.c
- *
- * Copyright (C) 2013, 2018 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <nuttx/sched.h>
- #include "group/group.h"
- #ifdef HAVE_GROUP_MEMBERS
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: group_foreachchild
- *
- * Description:
- * Execute a function for each child of a group.
- *
- * Input Parameters:
- * group - The group containing the children
- * handler - The function to be called
- * arg - An additional argument to provide to the handler
- *
- * Returned Value:
- * Success (OK) is always returned unless the handler returns a non-zero
- * value (a negated errno on errors). In that case, the traversal
- * terminates and that non-zero value is returned.
- *
- * Assumptions:
- *
- ****************************************************************************/
- int group_foreachchild(FAR struct task_group_s *group,
- foreachchild_t handler, FAR void *arg)
- {
- int ret;
- int i;
- DEBUGASSERT(group);
- /* Visit the main thread last (if present) */
- for (i = group->tg_nmembers - 1; i >= 0; i--)
- {
- ret = handler(group->tg_members[i], arg);
- if (ret != 0)
- {
- return ret;
- }
- }
- return 0;
- }
- #endif /* HAVE_GROUP_MEMBERS */
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