blob: 2b4eec1e245b279798d2faca4c34b96dcff873b0 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/**
* @file
*
* @brief Inlined Routines from the POSIX Timer Manager
*
* This file contains the static inline implementation of the inlined routines
* from the POSIX Timer Manager.
*/
/*
* COPYRIGHT (c) 1989-2013.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _RTEMS_POSIX_TIMERIMPL_H
#define _RTEMS_POSIX_TIMERIMPL_H
#include <rtems/posix/timer.h>
#include <rtems/score/objectimpl.h>
#include <rtems/score/watchdogimpl.h>
#ifdef __cplusplus
extern "C" {
#endif
/** Timer is free */
#define POSIX_TIMER_STATE_FREE 0x01
/** Created timer but not running */
#define POSIX_TIMER_STATE_CREATE_NEW 0x02
/** Created timer and running */
#define POSIX_TIMER_STATE_CREATE_RUN 0x03
/** Created, ran and stopped timer */
#define POSIX_TIMER_STATE_CREATE_STOP 0x04
/** Indicates that the fire time is relative to the current one */
#define POSIX_TIMER_RELATIVE 0
/*
* POSIX defines TIMER_ABSTIME but no constant for relative. So
* we have one internally but we need to be careful it has a different
* value.
*/
#if (POSIX_TIMER_RELATIVE == TIMER_ABSTIME)
#error "POSIX_TIMER_RELATIVE == TIMER_ABSTIME"
#endif
/**
* @brief POSIX Timer Allocate
*
* This function allocates a timer control block from
* the inactive chain of free timer control blocks.
*/
RTEMS_INLINE_ROUTINE POSIX_Timer_Control *_POSIX_Timer_Allocate( void )
{
return (POSIX_Timer_Control *) _Objects_Allocate( &_POSIX_Timer_Information );
}
/**
* @brief POSIX Timer Free
*
* This routine frees a timer control block to the
* inactive chain of free timer control blocks.
*/
RTEMS_INLINE_ROUTINE void _POSIX_Timer_Free (
POSIX_Timer_Control *the_timer
)
{
_Objects_Free( &_POSIX_Timer_Information, &the_timer->Object );
}
void _POSIX_Timer_TSR( Watchdog_Control *the_watchdog );
/**
* @brief POSIX Timer Get
*
* This function maps timer IDs to timer control blocks.
* If ID corresponds to a local timer, then it returns
* the timer control pointer which maps to ID and location
* is set to OBJECTS_LOCAL. Otherwise, location is set
* to OBJECTS_ERROR and the returned value is undefined.
*/
RTEMS_INLINE_ROUTINE POSIX_Timer_Control *_POSIX_Timer_Get (
timer_t id,
ISR_lock_Context *lock_context
)
{
return (POSIX_Timer_Control *) _Objects_Get(
(Objects_Id) id,
lock_context,
&_POSIX_Timer_Information
);
}
RTEMS_INLINE_ROUTINE Per_CPU_Control *_POSIX_Timer_Acquire_critical(
POSIX_Timer_Control *ptimer,
ISR_lock_Context *lock_context
)
{
Per_CPU_Control *cpu;
cpu = _Watchdog_Get_CPU( &ptimer->Timer );
_Watchdog_Per_CPU_acquire_critical( cpu, lock_context );
return cpu;
}
RTEMS_INLINE_ROUTINE void _POSIX_Timer_Release(
Per_CPU_Control *cpu,
ISR_lock_Context *lock_context
)
{
_Watchdog_Per_CPU_release_critical( cpu, lock_context );
_ISR_lock_ISR_enable( lock_context );
}
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
|
