170a50c690
sched/sched: Correct some build issues introduced by last set of changes.
sched/sched: Add new internal OS function nxsched_setaffinity() that is identical to sched_isetaffinity() except that it does not modify the errno value. All usage of sched_setaffinity() within the OS is replaced with nxsched_setaffinity().
sched/sched: Internal functions sched_reprioritize() and sched_setpriority() no longer movidify the errno value. Also renamed to nxsched_reprioritize() and sched_setpriority().
sched/sched: Add new internal OS function nxsched_getscheduler() that is identical to sched_getscheduler() except that it does not modify the errno value. All usage of sched_getscheduler() within the OS is replaced with nxsched_getscheduler().
sched/sched: Add new internal OS function nxsched_setparam() that is identical to sched_setparam() except that it does not modify the errno value. All usage of sched_setparam() within the OS is replaced with nxsched_setparam().
sched/sched: Add new internal OS function nxsched_getparam() that is identical to sched_getparam() except that it does not modify the errno value (actually, the previous value erroneously neglected to set the errno value to begin with, but this fixes both issues). All usage of sched_getparam() within the OS is replaced with nxsched_getparam().
101 lines
3.8 KiB
C
101 lines
3.8 KiB
C
/****************************************************************************
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* sched/pthread/pthread_setaffinity.c
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*
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* Copyright (C) 2016, 2018 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 <sys/types.h>
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#include <pthread.h>
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#include <sched.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/sched.h>
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#include "pthread/pthread.h"
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#ifdef CONFIG_SMP
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pthread_setaffinity
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*
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* Description:
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* The pthread_setaffinity_np() function sets the CPU affinity mask of
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* the thread thread to the CPU set pointed to by cpuset. If the call
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* is successful, and the thread is not currently running on one of the
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* CPUs in cpuset, then it is migrated to one of those CPUs.
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* The argument cpusetsize is the length (in bytes) of the buffer
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* pointed to by cpuset. Typically, this argument would be specified as
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* sizeof(cpu_set_t).
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*
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* Parameters:
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* thread - The ID of thread whose affinity set will be modified.
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* cpusetsize - Size of cpuset. MUST be sizeofcpu_set_t().
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* cpuset - Provides the new affinity set for the thread.
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*
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* Return Value:
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* 0 if successful. Otherwise, an errno value is returned indicating the
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* nature of the failure.
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*
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****************************************************************************/
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int pthread_setaffinity_np(pthread_t thread, size_t cpusetsize,
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FAR const cpu_set_t *cpuset)
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{
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int ret;
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sinfo("thread ID=%d cpusetsize=%d cpuset=%p\n",
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(int)thread, (int)cpusetsize, cpusetsize);
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DEBUGASSERT(thread > 0 && cpusetsize == sizeof(cpu_set_t) &&
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cpuset != NULL);
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/* Let nxsched_setaffinity do all of the work, adjusting the return value */
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ret = nxsched_setaffinity((pid_t)thread, cpusetsize, cpuset);
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return ret < 0 ? -ret : OK;
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}
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#endif /* CONFIG_SMP */
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