/**************************************************************************** * libs/libc/tls/tls_getvalue.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 #include #include #include #include #if CONFIG_TLS_NELEM > 0 /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: tls_get_value * * Description: * Return an the TLS data value associated with the 'tlsindx' * * Input Parameters: * tlsindex - Index of TLS data element to return * * Returned Value: * The value of TLS element associated with 'tlsindex'. Errors are not * reported. Zero is returned in the event of an error, but zero may also * be valid value and returned when there is no error. The only possible * error would be if tlsindex < 0 or tlsindex >=CONFIG_TLS_NELEM. * ****************************************************************************/ uintptr_t tls_get_value(int tlsindex) { FAR struct tls_info_s *info; uintptr_t ret = 0; 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); /* Get the element value from the TLS info. */ ret = info->tl_elem[tlsindex]; } return ret; } #endif /* CONFIG_TLS_NELEM > 0 */ #if CONFIG_TLS_TASK_NELEM > 0 /**************************************************************************** * Name: task_tls_get_value * * Description: * Return an the task local storage data value associated with 'tlsindx' * * Input Parameters: * tlsindex - Index of task local storage data element to return * * Returned Value: * The value of TLS element associated with 'tlsindex'. Errors are not * reported. Zero is returned in the event of an error, but zero may also * be valid value and returned when there is no error. The only possible * error would be if tlsindex < 0 or tlsindex >=CONFIG_TLS_TASK_NELEM. * ****************************************************************************/ uintptr_t task_tls_get_value(int tlsindex) { FAR struct task_info_s *info = task_get_info(); if (tlsindex >= 0 && tlsindex < CONFIG_TLS_TASK_NELEM) { return info->ta_telem[tlsindex]; } return 0; } #endif