source: rtems/cpukit/rtems/src/ratemontimeout.c @ 66cb142

Last change on this file since 66cb142 was 91ce012c, checked in by Sebastian Huber <sebastian.huber@…>, on Oct 16, 2017 at 7:32:37 AM

score: Rename _Watchdog_Per_CPU_insert_monotonic()

Rename _Watchdog_Per_CPU_insert_monotonic() in
_Watchdog_Per_CPU_insert_ticks().

Update #3117.
Update #3182.

  • Property mode set to 100644
File size: 2.2 KB
Line 
1/**
2 *  @file
3 *
4 *  @brief Rate Monotonic Timeout
5 *  @ingroup ClassicRateMon
6 */
7
8/*
9 *  COPYRIGHT (c) 1989-2009.
10 *  On-Line Applications Research Corporation (OAR).
11 *
12 *  COPYRIGHT (c) 2016-2017 Kuan-Hsun Chen.
13 *
14 *  The license and distribution terms for this file may be
15 *  found in the file LICENSE in this distribution or at
16 *  http://www.rtems.org/license/LICENSE.
17 */
18
19#if HAVE_CONFIG_H
20#include "config.h"
21#endif
22
23#include <rtems/rtems/ratemonimpl.h>
24
25static void _Rate_monotonic_Renew_deadline(
26  Rate_monotonic_Control *the_period,
27  ISR_lock_Context       *lock_context
28)
29{
30  uint64_t deadline;
31
32  /* stay at 0xffffffff if postponed_jobs is going to overflow */
33  if ( the_period->postponed_jobs != UINT32_MAX ) {
34    ++the_period->postponed_jobs;
35  }
36
37  the_period->state = RATE_MONOTONIC_EXPIRED;
38
39  deadline = _Watchdog_Per_CPU_insert_ticks(
40    &the_period->Timer,
41    _Per_CPU_Get(),
42    the_period->next_length
43  );
44  the_period->latest_deadline = deadline;
45
46  _Rate_monotonic_Release( the_period, lock_context );
47}
48
49void _Rate_monotonic_Timeout( Watchdog_Control *the_watchdog )
50{
51  Rate_monotonic_Control *the_period;
52  Thread_Control         *owner;
53  ISR_lock_Context        lock_context;
54  Thread_Wait_flags       wait_flags;
55
56  the_period = RTEMS_CONTAINER_OF( the_watchdog, Rate_monotonic_Control, Timer );
57  owner = the_period->owner;
58
59  _ISR_lock_ISR_disable( &lock_context );
60  _Rate_monotonic_Acquire_critical( the_period, &lock_context );
61  wait_flags = _Thread_Wait_flags_get( owner );
62
63  if (
64    ( wait_flags & THREAD_WAIT_CLASS_PERIOD ) != 0
65      && owner->Wait.return_argument == the_period
66  ) {
67    bool unblock;
68    bool success;
69
70    owner->Wait.return_argument = NULL;
71
72    success = _Thread_Wait_flags_try_change_release(
73      owner,
74      RATE_MONOTONIC_INTEND_TO_BLOCK,
75      RATE_MONOTONIC_READY_AGAIN
76    );
77    if ( success ) {
78      unblock = false;
79    } else {
80      _Assert( _Thread_Wait_flags_get( owner ) == RATE_MONOTONIC_BLOCKED );
81      _Thread_Wait_flags_set( owner, RATE_MONOTONIC_READY_AGAIN );
82      unblock = true;
83    }
84
85    _Rate_monotonic_Restart( the_period, owner, &lock_context );
86
87    if ( unblock ) {
88      _Thread_Unblock( owner );
89    }
90  } else {
91    _Rate_monotonic_Renew_deadline( the_period, &lock_context );
92  }
93}
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