nuttx/libs/libc/tls/tls_setvalue.c

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/****************************************************************************
* libs/libc/tls/tls_setvalue.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <assert.h>
#include <errno.h>
#include <nuttx/arch.h>
#include <nuttx/tls.h>
#if CONFIG_TLS_NELEM > 0
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: tls_set_value
*
* Description:
* Set the TLS element associated with the 'tlsindex' to 'tlsvalue'
*
* Input Parameters:
* tlsindex - Index of TLS data element to set
* tlsvalue - The new value of the TLS data element
*
* Returned Value:
* Zero is returned on success, a negated errno value is return on
* failure:
*
* EINVAL - tlsindex is not in range.
*
****************************************************************************/
int tls_set_value(int tlsindex, uintptr_t tlsvalue)
{
FAR struct tls_info_s *info;
DEBUGASSERT(tlsindex >= 0 && tlsindex < CONFIG_TLS_NELEM);
if (tlsindex >= 0 && tlsindex < CONFIG_TLS_NELEM)
{
/* Get the TLS info structure from the current threads stack */
info = up_tls_info();
DEBUGASSERT(info != NULL);
/* Set the element value int the TLS info. */
info->tl_elem[tlsindex] = tlsvalue;
return OK;
}
return -EINVAL;
}
#endif /* CONFIG_TLS_NELEM > 0 */
#if CONFIG_TLS_TASK_NELEM > 0
/****************************************************************************
* Name: task_tls_set_value
*
* Description:
* Set the task local storage element associated with the 'tlsindex' to
* 'tlsvalue'
*
* Input Parameters:
* tlsindex - Index of task local storage data element to set
* tlsvalue - The new value of the task local storage data element
*
* Returned Value:
* Zero is returned on success, a negated errno value is return on
* failure:
*
* EINVAL - tlsindex is not in range.
*
****************************************************************************/
int task_tls_set_value(int tlsindex, uintptr_t tlsvalue)
{
FAR struct task_info_s *info = task_get_info();
if (tlsindex >= 0 && tlsindex < CONFIG_TLS_TASK_NELEM)
{
info->ta_telem[tlsindex] = tlsvalue;
}
else
{
return -ERANGE;
}
return OK;
}
#endif