111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
/****************************************************************************
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* libs/libc/spawn/lib_psa_init.c
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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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/****************************************************************************
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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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#include <nuttx/sched.h>
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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 _SCHED_ERRNO(ret);
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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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ret = _SCHED_GETSCHEDULER(0);
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if (ret < 0)
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{
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return _SCHED_ERRNO(ret);
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}
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attr->policy = ret;
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/* Empty signal mask */
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sigemptyset(&attr->sigmask);
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#ifdef CONFIG_SCHED_SPORADIC
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/* Sporadic scheduling parameters */
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attr->low_priority = (uint8_t)param.sched_ss_low_priority;
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attr->max_repl = (uint8_t)param.sched_ss_max_repl;
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attr->repl_period.tv_sec = param.sched_ss_repl_period.tv_sec;
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attr->repl_period.tv_nsec = param.sched_ss_repl_period.tv_nsec;
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attr->budget.tv_sec = param.sched_ss_init_budget.tv_sec;
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attr->budget.tv_nsec = param.sched_ss_init_budget.tv_nsec;
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#endif
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/* Default stack size */
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attr->stacksize = CONFIG_POSIX_SPAWN_DEFAULT_STACKSIZE;
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#ifndef CONFIG_BUILD_KERNEL
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attr->stackaddr = NULL;
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#endif
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return OK;
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}
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