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author | Lorenz Meier <lm@inf.ethz.ch> | 2013-06-01 01:04:32 +0200 |
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committer | Lorenz Meier <lm@inf.ethz.ch> | 2013-06-01 01:04:32 +0200 |
commit | 5375bb5b86e266157ceceef08c367da711b8144e (patch) | |
tree | 88bc81cab11d8f0b2b6f9391f803051c081b2ecb /nuttx/sched/sched_setscheduler.c | |
parent | 27ee36b2049167a1272122548fe61aa2993d79c1 (diff) | |
download | px4-firmware-5375bb5b86e266157ceceef08c367da711b8144e.tar.gz px4-firmware-5375bb5b86e266157ceceef08c367da711b8144e.tar.bz2 px4-firmware-5375bb5b86e266157ceceef08c367da711b8144e.zip |
Cleanup, WIP, needs a NuttX checkout to Firmware/NuttX now
Diffstat (limited to 'nuttx/sched/sched_setscheduler.c')
-rw-r--r-- | nuttx/sched/sched_setscheduler.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/nuttx/sched/sched_setscheduler.c b/nuttx/sched/sched_setscheduler.c deleted file mode 100644 index 7f7f345b4..000000000 --- a/nuttx/sched/sched_setscheduler.c +++ /dev/null @@ -1,187 +0,0 @@ -/**************************************************************************** - * sched/sched_setscheduler.c - * - * Copyright (C) 2007, 2009, 2012 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 <sys/types.h> -#include <unistd.h> -#include <sched.h> -#include <errno.h> - -#include <nuttx/arch.h> - -#include "os_internal.h" -#include "clock_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Type Declarations - ****************************************************************************/ - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name:sched_setscheduler - * - * Description: - * sched_setscheduler() sets both the scheduling policy and the priority - * for the task identified by pid. If pid equals zero, the scheduler of - * the calling task will be set. The parameter 'param' holds the priority - * of the thread under the new policy. - * - * Inputs: - * pid - the task ID of the task to modify. If pid is zero, the calling - * task is modified. - * policy - Scheduling policy requested (either SCHED_FIFO or SCHED_RR) - * param - A structure whose member sched_priority is the new priority. - * The range of valid priority numbers is from SCHED_PRIORITY_MIN - * through SCHED_PRIORITY_MAX. - * - * Return Value: - * On success, sched_setscheduler() returns OK (zero). On error, ERROR - * (-1) is returned, and errno is set appropriately: - * - * EINVAL The scheduling policy is not one of the recognized policies. - * ESRCH The task whose ID is pid could not be found. - * - * Assumptions: - * - ****************************************************************************/ - -int sched_setscheduler(pid_t pid, int policy, - const struct sched_param *param) -{ - FAR _TCB *tcb; -#if CONFIG_RR_INTERVAL > 0 - irqstate_t saved_state; -#endif - int ret; - - /* Check for supported scheduling policy */ - -#if CONFIG_RR_INTERVAL > 0 - if (policy != SCHED_FIFO && policy != SCHED_RR) -#else - if (policy != SCHED_FIFO) -#endif - { - errno = EINVAL; - return ERROR; - } - - /* Check if the task to modify the calling task */ - - if (pid == 0 ) - { - pid = getpid(); - } - - /* Verify that the pid corresponds to a real task */ - - tcb = sched_gettcb(pid); - if (!tcb) - { - errno = ESRCH; - return ERROR; - } - - /* Prohibit any context switches while we muck with priority and scheduler - * settings. - */ - - sched_lock(); - -#if CONFIG_RR_INTERVAL > 0 - /* Further, disable timer interrupts while we set up scheduling policy. */ - - saved_state = irqsave(); - if (policy == SCHED_RR) - { - /* Set round robin scheduling */ - - tcb->flags |= TCB_FLAG_ROUND_ROBIN; - tcb->timeslice = CONFIG_RR_INTERVAL / MSEC_PER_TICK; - } - else - { - /* Set FIFO scheduling */ - - tcb->flags &= ~TCB_FLAG_ROUND_ROBIN; - tcb->timeslice = 0; - } - - irqrestore(saved_state); -#endif - - /* Set the new priority */ - - ret = sched_reprioritize(tcb, param->sched_priority); - sched_unlock(); - - if (ret != OK) - { - return ERROR; - } - else - { - return OK; - } -} - |