144 lines
4.8 KiB
C
144 lines
4.8 KiB
C
/****************************************************************************
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* sched/group/group.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __SCHED_GROUP_GROUP_H
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#define __SCHED_GROUP_GROUP_H
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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 <sys/types.h>
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#include <stdbool.h>
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#include <queue.h>
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#include <sched.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/sched.h>
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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typedef int (*foreachchild_t)(pid_t pid, FAR void *arg);
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#if defined(HAVE_GROUP_MEMBERS) || defined(CONFIG_ARCH_ADDRENV)
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/* This is the head of a list of all group members */
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extern FAR struct task_group_s *g_grouphead;
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#endif
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#ifdef CONFIG_ARCH_ADDRENV
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/* This variable holds the PID of the current task group. This ID is
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* zero if the current task is a kernel thread that has no address
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* environment (other than the kernel context).
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*
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* This must only be accessed with interrupts disabled.
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*/
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extern pid_t g_pid_current;
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef CONFIG_SCHED_CHILD_STATUS
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void weak_function task_initialize(void);
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#endif
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/* Task group data structure management */
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int group_allocate(FAR struct task_tcb_s *tcb, uint8_t ttype);
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void group_initialize(FAR struct task_tcb_s *tcb);
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#ifndef CONFIG_DISABLE_PTHREAD
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int group_bind(FAR struct pthread_tcb_s *tcb);
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int group_join(FAR struct pthread_tcb_s *tcb);
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#endif
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void group_leave(FAR struct tcb_s *tcb);
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#if defined(CONFIG_SCHED_WAITPID) && !defined(CONFIG_SCHED_HAVE_PARENT)
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void group_add_waiter(FAR struct task_group_s *group);
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void group_del_waiter(FAR struct task_group_s *group);
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#endif
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#if defined(HAVE_GROUP_MEMBERS) || defined(CONFIG_ARCH_ADDRENV)
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FAR struct task_group_s *group_findbypid(pid_t pid);
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#endif
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#ifdef HAVE_GROUP_MEMBERS
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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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int group_kill_children(FAR struct tcb_s *tcb);
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#ifdef CONFIG_SIG_SIGSTOP_ACTION
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int group_suspend_children(FAR struct tcb_s *tcb);
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int group_continue(FAR struct tcb_s *tcb);
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#endif
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#endif
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#ifdef CONFIG_ARCH_ADDRENV
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/* Group address environment management */
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int group_addrenv(FAR struct tcb_s *tcb);
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#endif
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/* Convenience functions */
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FAR struct task_group_s *task_getgroup(pid_t pid);
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/* Signaling group members */
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int group_signal(FAR struct task_group_s *group, FAR siginfo_t *siginfo);
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/* Parent/child data management */
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#ifdef CONFIG_SCHED_HAVE_PARENT
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int task_reparent(pid_t ppid, pid_t chpid);
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#ifdef CONFIG_SCHED_CHILD_STATUS
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FAR struct child_status_s *group_alloc_child(void);
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void group_free_child(FAR struct child_status_s *status);
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void group_add_child(FAR struct task_group_s *group,
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FAR struct child_status_s *child);
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FAR struct child_status_s *group_exit_child(FAR struct task_group_s *group);
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FAR struct child_status_s *group_find_child(FAR struct task_group_s *group,
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pid_t pid);
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FAR struct child_status_s *group_remove_child(FAR struct task_group_s *group,
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pid_t pid);
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void group_remove_children(FAR struct task_group_s *group);
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#endif /* CONFIG_SCHED_CHILD_STATUS */
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#endif /* CONFIG_SCHED_HAVE_PARENT */
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/* Group data resource configuration */
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int group_setupidlefiles(FAR struct task_tcb_s *tcb);
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int group_setuptaskfiles(FAR struct task_tcb_s *tcb);
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#ifdef CONFIG_FILE_STREAM
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int group_setupstreams(FAR struct task_tcb_s *tcb);
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#endif
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#endif /* __SCHED_GROUP_GROUP_H */
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