165 lines
5.8 KiB
C
165 lines
5.8 KiB
C
/****************************************************************************
|
|
* sched/group/group.h
|
|
*
|
|
* Copyright (C) 2007-2013 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __SCHED_GROUP_GROUP_H
|
|
#define __SCHED_GROUP_GROUP_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <stdbool.h>
|
|
#include <queue.h>
|
|
#include <sched.h>
|
|
|
|
#include <nuttx/kmalloc.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
/* Any negative GID is invalid. */
|
|
|
|
#define INVALID_GROUP_ID (pid_t)-1
|
|
#define IS_INVALID_GID(gid) ((int)(gid) < 0)
|
|
|
|
/****************************************************************************
|
|
* Public Type Definitions
|
|
****************************************************************************/
|
|
|
|
typedef int (*foreachchild_t)(pid_t pid, FAR void *arg);
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
#if defined(HAVE_GROUP_MEMBERS) || defined(CONFIG_ARCH_ADDRENV)
|
|
/* This is the head of a list of all group members */
|
|
|
|
extern FAR struct task_group_s *g_grouphead;
|
|
#endif
|
|
|
|
#ifdef CONFIG_ARCH_ADDRENV
|
|
/* This variable holds the group ID of the current task group. This ID is
|
|
* zero if the current task is a kernel thread that has no address
|
|
* environment (other than the kernel context).
|
|
*
|
|
* This must only be accessed with interrupts disabled.
|
|
*/
|
|
|
|
extern gid_t g_gid_current;
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_SCHED_CHILD_STATUS
|
|
void weak_function task_initialize(void);
|
|
#endif
|
|
|
|
/* Task group data structure management */
|
|
|
|
#ifdef HAVE_TASK_GROUP
|
|
int group_allocate(FAR struct task_tcb_s *tcb);
|
|
int group_initialize(FAR struct task_tcb_s *tcb);
|
|
#ifndef CONFIG_DISABLE_PTHREAD
|
|
int group_bind(FAR struct pthread_tcb_s *tcb);
|
|
int group_join(FAR struct pthread_tcb_s *tcb);
|
|
#endif
|
|
void group_leave(FAR struct tcb_s *tcb);
|
|
|
|
#if defined(HAVE_GROUP_MEMBERS) || defined(CONFIG_ARCH_ADDRENV)
|
|
FAR struct task_group_s *group_findbygid(gid_t gid);
|
|
#endif
|
|
|
|
#ifdef HAVE_GROUP_MEMBERS
|
|
FAR struct task_group_s *group_findbypid(pid_t pid);
|
|
int group_foreachchild(FAR struct task_group_s *group,
|
|
foreachchild_t handler, FAR void *arg);
|
|
int group_killchildren(FAR struct task_tcb_s *tcb);
|
|
#endif
|
|
|
|
#ifdef CONFIG_ARCH_ADDRENV
|
|
/* Group address environment management */
|
|
|
|
int group_addrenv(FAR struct tcb_s *tcb);
|
|
#endif
|
|
|
|
/* Convenience functions */
|
|
|
|
FAR struct task_group_s *task_getgroup(pid_t pid);
|
|
|
|
/* Signaling group members */
|
|
|
|
#ifndef CONFIG_DISABLE_SIGNALS
|
|
int group_signal(FAR struct task_group_s *group, FAR siginfo_t *siginfo);
|
|
#endif
|
|
#endif /* HAVE_TASK_GROUP */
|
|
|
|
/* Parent/child data management */
|
|
|
|
#ifdef CONFIG_SCHED_HAVE_PARENT
|
|
int task_reparent(pid_t ppid, pid_t chpid);
|
|
|
|
#ifdef CONFIG_SCHED_CHILD_STATUS
|
|
FAR struct child_status_s *group_allocchild(void);
|
|
void group_freechild(FAR struct child_status_s *status);
|
|
void group_addchild(FAR struct task_group_s *group,
|
|
FAR struct child_status_s *child);
|
|
FAR struct child_status_s *group_exitchild(FAR struct task_group_s *group);
|
|
FAR struct child_status_s *group_findchild(FAR struct task_group_s *group,
|
|
pid_t pid);
|
|
FAR struct child_status_s *group_removechild(FAR struct task_group_s *group,
|
|
pid_t pid);
|
|
void group_removechildren(FAR struct task_group_s *group);
|
|
|
|
#endif /* CONFIG_SCHED_CHILD_STATUS */
|
|
#endif /* CONFIG_SCHED_HAVE_PARENT */
|
|
|
|
/* Group data resource configuration */
|
|
|
|
#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0
|
|
int group_setupidlefiles(FAR struct task_tcb_s *tcb);
|
|
int group_setuptaskfiles(FAR struct task_tcb_s *tcb);
|
|
#if CONFIG_NFILE_STREAMS > 0
|
|
int group_setupstreams(FAR struct task_tcb_s *tcb);
|
|
#endif
|
|
#endif
|
|
|
|
#endif /* __SCHED_GROUP_GROUP_H */
|