b5d4a01821
Gregory Nutt has submitted the SGA and we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
97 lines
3.8 KiB
C
97 lines
3.8 KiB
C
/********************************************************************************
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* libs/libc/pthread/pthread_barrierattr_setpshared.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 <pthread.h>
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#include <errno.h>
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#include <debug.h>
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/********************************************************************************
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* Pre-processor Definitions
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********************************************************************************/
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/********************************************************************************
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* Private Type Declarations
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********************************************************************************/
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/********************************************************************************
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* Public Data
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********************************************************************************/
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/********************************************************************************
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* Private Data
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********************************************************************************/
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/********************************************************************************
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* Private Function Prototypes
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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: pthread_barrierattr_setpshared
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*
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* Description:
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* The process-shared attribute is set to PTHREAD_PROCESS_SHARED to permit a
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* barrier to be operated upon by any thread that has access to the memory where
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* the barrier is allocated. If the process-shared attribute is
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* PTHREAD_PROCESS_PRIVATE, the barrier can only be operated upon by threads
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* created within the same process as the thread that initialized the barrier.
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* If threads of different processes attempt to operate on such a barrier, the
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* behavior is undefined. The default value of the attribute is
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* PTHREAD_PROCESS_PRIVATE.
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*
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* Both constants PTHREAD_PROCESS_SHARED and PTHREAD_PROCESS_PRIVATE are defined
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* in pthread.h.
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*
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* Input Parameters:
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* attr - barrier attributes to be modified.
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* pshared - the new value of the pshared attribute.
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*
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* Returned Value:
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* 0 (OK) on success or EINVAL if either attr is invalid or pshared is not one
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* of PTHREAD_PROCESS_SHARED or PTHREAD_PROCESS_PRIVATE.
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*
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* Assumptions:
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*
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********************************************************************************/
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int pthread_barrierattr_setpshared(FAR pthread_barrierattr_t *attr, int pshared)
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{
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int ret = OK;
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if (!attr || (pshared != PTHREAD_PROCESS_SHARED && pshared != PTHREAD_PROCESS_PRIVATE))
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{
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ret = EINVAL;
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}
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else
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{
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attr->pshared = pshared;
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}
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return ret;
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}
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