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111 lines
3.9 KiB
111 lines
3.9 KiB
/**************************************************************************** |
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* lib/pthread/pthread_attrsetschedpolicy.c |
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* |
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* Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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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 <string.h> |
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#include <sched.h> |
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#include <debug.h> |
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#include <errno.h> |
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/**************************************************************************** |
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* 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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* Global Variables |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Variables |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Functions |
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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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* Function: pthread_attr_setschedpolicy |
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* |
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* Description: |
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* Set the scheduling algorithm attribute. |
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* |
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* Parameters: |
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* attr |
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* policy |
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* |
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* Return Value: |
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* 0 if successful. Otherwise, an error code. |
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* |
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* Assumptions: |
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* |
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****************************************************************************/ |
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int pthread_attr_setschedpolicy(FAR pthread_attr_t *attr, int policy) |
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{ |
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int ret; |
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sdbg("attr=0x%p policy=%d\n", attr, policy); |
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#if CONFIG_RR_INTERVAL > 0 |
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if (!attr || (policy != SCHED_FIFO && policy != SCHED_RR)) |
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#else |
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if (!attr || policy != SCHED_FIFO ) |
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#endif |
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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->policy = policy; |
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ret = OK; |
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} |
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sdbg("Returning %d\n", ret); |
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return ret; |
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}
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