b0797263ca
1.Reduce the default size of task_group_s(~512B each task) 2.Scale better between simple and complex application Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> Change-Id: Ia872137504fddcf64d89c48d6f0593d76d582710
136 lines
4.0 KiB
C
136 lines
4.0 KiB
C
/****************************************************************************
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* sched/group/group_setupidlefiles.c
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*
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* Copyright (C) 2007-2010, 2012-2013, 2018 Gregory Nutt. All rights
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* 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 <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sched.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/net/net.h>
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#include "group/group.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: group_setupidlefiles
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*
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* Description:
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* Configure the idle thread's TCB.
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*
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* Input Parameters:
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* tcb - tcb of the idle task.
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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*
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****************************************************************************/
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int group_setupidlefiles(FAR struct task_tcb_s *tcb)
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{
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FAR struct task_group_s *group = tcb->cmn.group;
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#ifdef CONFIG_DEV_CONSOLE
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int fd;
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#endif
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DEBUGASSERT(group != NULL);
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/* Initialize file descriptors for the TCB */
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files_initlist(&group->tg_filelist);
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#ifdef CONFIG_NET
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/* Allocate socket descriptors for the TCB */
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net_initlist(&group->tg_socketlist);
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#endif
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/* Open stdin, dup to get stdout and stderr. This should always
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* be the first file opened and, hence, should always get file
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* descriptor 0.
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*/
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#ifdef CONFIG_DEV_CONSOLE
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fd = nx_open("/dev/console", O_RDWR);
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if (fd == 0)
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{
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/* Successfully opened /dev/console as stdin (fd == 0) */
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fs_dupfd2(0, 1);
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fs_dupfd2(0, 2);
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}
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else
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{
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/* We failed to open /dev/console OR for some reason, we opened
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* it and got some file descriptor other than 0.
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*/
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if (fd > 0)
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{
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sinfo("Open /dev/console fd: %d\n", fd);
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close(fd);
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}
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else
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{
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serr("ERROR: Failed to open /dev/console: %d\n", fd);
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}
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return -ENFILE;
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}
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#endif
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/* Allocate file/socket streams for the TCB */
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#ifdef CONFIG_FILE_STREAM
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return group_setupstreams(tcb);
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#else
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return OK;
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#endif
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}
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