104 lines
4.1 KiB
C
104 lines
4.1 KiB
C
/****************************************************************************
|
|
* sched/timer/timer.h
|
|
*
|
|
* Copyright (C) 2007-2009, 2014-2015 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __SCHED_TIMER_TIMER_H
|
|
#define __SCHED_TIMER_TIMER_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <stdint.h>
|
|
|
|
#include <nuttx/compiler.h>
|
|
#include <nuttx/signal.h>
|
|
#include <nuttx/wdog.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
#define PT_FLAGS_PREALLOCATED 0x01 /* Timer comes from a pool of preallocated timers */
|
|
|
|
/****************************************************************************
|
|
* Public Types
|
|
****************************************************************************/
|
|
|
|
/* This structure represents one POSIX timer */
|
|
|
|
struct posix_timer_s
|
|
{
|
|
FAR struct posix_timer_s *flink;
|
|
|
|
uint8_t pt_flags; /* See PT_FLAGS_* definitions */
|
|
uint8_t pt_crefs; /* Reference count */
|
|
pid_t pt_owner; /* Creator of timer */
|
|
int pt_delay; /* If non-zero, used to reset repetitive timers */
|
|
int pt_last; /* Last value used to set watchdog */
|
|
WDOG_ID pt_wdog; /* The watchdog that provides the timing */
|
|
struct sigevent pt_event; /* Notification information */
|
|
struct sigwork_s pt_work;
|
|
};
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
#if CONFIG_PREALLOC_TIMERS > 0
|
|
/* This is a list of free, preallocated timer structures */
|
|
|
|
extern volatile sq_queue_t g_freetimers;
|
|
#endif
|
|
|
|
/* This is a list of instantiated timer structures -- active and inactive. The
|
|
* timers are place on this list by timer_create() and removed from the list by
|
|
* timer_delete() or when the owning thread exits.
|
|
*/
|
|
|
|
extern volatile sq_queue_t g_alloctimers;
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
void weak_function timer_initialize(void);
|
|
void weak_function timer_deleteall(pid_t pid);
|
|
int timer_release(FAR struct posix_timer_s *timer);
|
|
|
|
#endif /* __SCHED_TIMER_TIMER_H */
|