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+/********************************************************************************
+ * lib/pthread/pthread_barrierattrsetpshared.c
+ *
+ * Copyright (C) 2007, 2009, 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ********************************************************************************/
+
+/********************************************************************************
+ * Included Files
+ ********************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <pthread.h>
+#include <errno.h>
+#include <debug.h>
+
+/********************************************************************************
+ * Definitions
+ ********************************************************************************/
+
+/********************************************************************************
+ * Private Type Declarations
+ ********************************************************************************/
+
+/********************************************************************************
+ * Global Variables
+ ********************************************************************************/
+
+/********************************************************************************
+ * Private Variables
+ ********************************************************************************/
+
+/********************************************************************************
+ * Private Function Prototypes
+ ********************************************************************************/
+
+/********************************************************************************
+ * Public Functions
+ ********************************************************************************/
+
+/********************************************************************************
+ * Function: pthread_barrierattr_setpshared
+ *
+ * Description:
+ * The process-shared attribute is set to PTHREAD_PROCESS_SHARED to permit a
+ * barrier to be operated upon by any thread that has access to the memory where
+ * the barrier is allocated. If the process-shared attribute is
+ * PTHREAD_PROCESS_PRIVATE, the barrier can only be operated upon by threads
+ * created within the same process as the thread that initialized the barrier.
+ * If threads of different processes attempt to operate on such a barrier, the
+ * behavior is undefined. The default value of the attribute is
+ * PTHREAD_PROCESS_PRIVATE.
+ *
+ * Both constants PTHREAD_PROCESS_SHARED and PTHREAD_PROCESS_PRIVATE are defined
+ * in pthread.h.
+ *
+ * Parameters:
+ * attr - barrier attributes to be modified.
+ * pshared - the new value of the pshared attribute.
+ *
+ * Return Value:
+ * 0 (OK) on success or EINVAL if either attr is invalid or pshared is not one
+ * of PTHREAD_PROCESS_SHARED or PTHREAD_PROCESS_PRIVATE.
+ *
+ * Assumptions:
+ *
+ ********************************************************************************/
+
+int pthread_barrierattr_setpshared(FAR pthread_barrierattr_t *attr, int pshared)
+{
+ int ret = OK;
+
+ if (!attr || (pshared != PTHREAD_PROCESS_SHARED && pshared != PTHREAD_PROCESS_PRIVATE))
+ {
+ ret = EINVAL;
+ }
+ else
+ {
+ attr->pshared = pshared;
+ }
+ return ret;
+}