108 lines
3.6 KiB
C
108 lines
3.6 KiB
C
/****************************************************************************
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* libc/string/lib_psa_init.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 <sched.h>
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#include <spawn.h>
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#include <assert.h>
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#include <errno.h>
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/****************************************************************************
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* Pre-processor Definitions
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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: posix_spawnattr_init
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*
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* Description:
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* The posix_spawnattr_init() function initializes the object referenced
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* by attr, to an empty set of spawn attributes for subsequent use in a
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* call to posix_spawn() or posix_spawnp().
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*
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* Input Parameters:
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* attr - The address of the spawn attributes to be initialized.
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*
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* Returned Value:
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* On success, these functions return 0; on failure they return an error
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* number from <errno.h>.
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*
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****************************************************************************/
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int posix_spawnattr_init(posix_spawnattr_t *attr)
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{
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struct sched_param param;
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int ret;
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DEBUGASSERT(attr);
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/* Flags: None */
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attr->flags = 0;
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/* Set the default priority to the same priority as this task */
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ret = sched_getparam(0, ¶m);
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if (ret < 0)
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{
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return errno;
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}
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attr->priority = param.sched_priority;
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/* Set the default scheduler policy to the policy of this task */
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attr->policy = sched_getscheduler(0);
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#ifndef CONFIG_DISABLE_SIGNALS
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/* Empty signal masek */
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attr->sigmask = 0;
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#endif
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/* Default stack size */
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attr->stacksize = CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE;
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return OK;
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}
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