1 | /** |
---|
2 | * @file |
---|
3 | * |
---|
4 | * @brief RTEMS Rate Monotonic Get Status |
---|
5 | * @ingroup ClassicRateMon |
---|
6 | */ |
---|
7 | |
---|
8 | /* |
---|
9 | * COPYRIGHT (c) 1989-2009. |
---|
10 | * On-Line Applications Research Corporation (OAR). |
---|
11 | * |
---|
12 | * The license and distribution terms for this file may be |
---|
13 | * found in the file LICENSE in this distribution or at |
---|
14 | * http://www.rtems.org/license/LICENSE. |
---|
15 | */ |
---|
16 | |
---|
17 | #if HAVE_CONFIG_H |
---|
18 | #include "config.h" |
---|
19 | #endif |
---|
20 | |
---|
21 | #include <rtems/system.h> |
---|
22 | #include <rtems/rtems/status.h> |
---|
23 | #include <rtems/rtems/support.h> |
---|
24 | #include <rtems/score/isr.h> |
---|
25 | #include <rtems/rtems/ratemonimpl.h> |
---|
26 | #include <rtems/score/thread.h> |
---|
27 | #include <rtems/score/timespec.h> |
---|
28 | |
---|
29 | rtems_status_code rtems_rate_monotonic_get_status( |
---|
30 | rtems_id id, |
---|
31 | rtems_rate_monotonic_period_status *status |
---|
32 | ) |
---|
33 | { |
---|
34 | Timestamp_Control executed; |
---|
35 | Objects_Locations location; |
---|
36 | Timestamp_Control since_last_period; |
---|
37 | Rate_monotonic_Control *the_period; |
---|
38 | bool valid_status; |
---|
39 | |
---|
40 | if ( !status ) |
---|
41 | return RTEMS_INVALID_ADDRESS; |
---|
42 | |
---|
43 | the_period = _Rate_monotonic_Get( id, &location ); |
---|
44 | switch ( location ) { |
---|
45 | |
---|
46 | case OBJECTS_LOCAL: |
---|
47 | status->owner = the_period->owner->Object.id; |
---|
48 | status->state = the_period->state; |
---|
49 | |
---|
50 | /* |
---|
51 | * If the period is inactive, there is no information. |
---|
52 | */ |
---|
53 | if ( status->state == RATE_MONOTONIC_INACTIVE ) { |
---|
54 | _Timespec_Set_to_zero( &status->since_last_period ); |
---|
55 | _Timespec_Set_to_zero( &status->executed_since_last_period ); |
---|
56 | } else { |
---|
57 | |
---|
58 | /* |
---|
59 | * Grab the current status. |
---|
60 | */ |
---|
61 | valid_status = |
---|
62 | _Rate_monotonic_Get_status( |
---|
63 | the_period, &since_last_period, &executed |
---|
64 | ); |
---|
65 | if (!valid_status) { |
---|
66 | _Objects_Put( &the_period->Object ); |
---|
67 | return RTEMS_NOT_DEFINED; |
---|
68 | } |
---|
69 | |
---|
70 | _Timestamp_To_timespec( |
---|
71 | &since_last_period, &status->since_last_period |
---|
72 | ); |
---|
73 | _Timestamp_To_timespec( |
---|
74 | &executed, &status->executed_since_last_period |
---|
75 | ); |
---|
76 | } |
---|
77 | |
---|
78 | _Objects_Put( &the_period->Object ); |
---|
79 | return RTEMS_SUCCESSFUL; |
---|
80 | |
---|
81 | #if defined(RTEMS_MULTIPROCESSING) |
---|
82 | case OBJECTS_REMOTE: /* should never return this */ |
---|
83 | #endif |
---|
84 | case OBJECTS_ERROR: |
---|
85 | break; |
---|
86 | } |
---|
87 | |
---|
88 | return RTEMS_INVALID_ID; |
---|
89 | } |
---|