84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/****************************************************************************
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* sched/environ/env_release.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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#ifndef CONFIG_DISABLE_ENVIRON
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#include <sched.h>
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#include <assert.h>
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#include <errno.h>
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#include <nuttx/kmalloc.h>
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#include "environ/environ.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: env_release
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*
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* Description:
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* env_release() is called only from group_leave() when the last member of
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* a task group exits. The env_release() function clears the environment
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* of all name-value pairs and sets the value of the external variable
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* environ to NULL.
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*
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* Input Parameters:
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* group - Identifies the task group containing the environment structure
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* to be released.
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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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* Not called from an interrupt handler
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*
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****************************************************************************/
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void env_release(FAR struct task_group_s *group)
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{
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DEBUGASSERT(group != NULL);
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/* Free any allocate environment strings */
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if (group->tg_envp)
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{
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/* Free the environment */
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kumm_free(group->tg_envp);
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}
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/* In any event, make sure that all environment-related variables in the
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* task group structure are reset to initial values.
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*/
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group->tg_envsize = 0;
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group->tg_envp = NULL;
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}
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#endif /* CONFIG_DISABLE_ENVIRON */
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