eb9030c891
Most tools used for compliance and SBOM generation use SPDX identifiers This change brings us a step closer to an easy SBOM generation. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
140 lines
4.1 KiB
C
140 lines
4.1 KiB
C
/****************************************************************************
|
|
* sched/timer/timer_release.c
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include <nuttx/irq.h>
|
|
#include <nuttx/queue.h>
|
|
#include <nuttx/kmalloc.h>
|
|
#include <nuttx/spinlock.h>
|
|
|
|
#include "timer/timer.h"
|
|
|
|
#ifndef CONFIG_DISABLE_POSIX_TIMERS
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: timer_free
|
|
*
|
|
* Description:
|
|
* Remove the timer from the allocated timer list and free it or return it
|
|
* to the free list (depending on whether or not the timer is one of the
|
|
* preallocated timers)
|
|
*
|
|
****************************************************************************/
|
|
|
|
static inline void timer_free(struct posix_timer_s *timer)
|
|
{
|
|
irqstate_t flags;
|
|
|
|
/* Remove the timer from the allocated list */
|
|
|
|
flags = spin_lock_irqsave(NULL);
|
|
sq_rem((FAR sq_entry_t *)timer, (FAR sq_queue_t *)&g_alloctimers);
|
|
|
|
/* Return it to the free list if it is one of the preallocated timers */
|
|
|
|
#if CONFIG_PREALLOC_TIMERS > 0
|
|
if ((timer->pt_flags & PT_FLAGS_PREALLOCATED) != 0)
|
|
{
|
|
sq_addlast((FAR sq_entry_t *)timer, (FAR sq_queue_t *)&g_freetimers);
|
|
spin_unlock_irqrestore(NULL, flags);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
/* Otherwise, return it to the heap */
|
|
|
|
spin_unlock_irqrestore(NULL, flags);
|
|
kmm_free(timer);
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: timer_release
|
|
*
|
|
* Description:
|
|
* timer_release implements the heart of timer_delete. It is private to
|
|
* the OS internals and differs only in that return value of 1 means that
|
|
* the timer was not actually deleted.
|
|
*
|
|
* Input Parameters:
|
|
* timer - The per-thread timer, previously created by the call to
|
|
* timer_create(), to be deleted.
|
|
*
|
|
* Returned Value:
|
|
* If the call succeeds, timer_release() will return 0 (OK) or 1 (meaning
|
|
* that the timer is still valid). Otherwise, the function will return a
|
|
* negated errno value:
|
|
*
|
|
* -EINVAL - The timer specified timerid is not valid.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int timer_release(FAR struct posix_timer_s *timer)
|
|
{
|
|
/* Some sanity checks */
|
|
|
|
if (timer == NULL)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Release one reference to timer. Don't delete the timer until the count
|
|
* would decrement to zero.
|
|
*/
|
|
|
|
if (timer->pt_crefs > 1)
|
|
{
|
|
timer->pt_crefs--;
|
|
return 1;
|
|
}
|
|
|
|
/* Cancel the underlying watchdog instance */
|
|
|
|
wd_cancel(&timer->pt_wdog);
|
|
|
|
/* Cancel any pending notification */
|
|
|
|
nxsig_cancel_notification(&timer->pt_work);
|
|
|
|
/* Release the timer structure */
|
|
|
|
timer_free(timer);
|
|
return OK;
|
|
}
|
|
|
|
#endif /* CONFIG_DISABLE_POSIX_TIMERS */
|