[a923a82] | 1 | /* |
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| 2 | ------------------------------------------------------------------------ |
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| 3 | $Id$ |
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| 4 | ------------------------------------------------------------------------ |
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[aed742c] | 5 | |
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[a923a82] | 6 | Copyright Objective Design Systems Pty Ltd, 2002 |
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| 7 | All rights reserved Objective Design Systems Pty Ltd, 2002 |
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| 8 | Chris Johns (ccj@acm.org) |
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| 9 | |
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| 10 | COPYRIGHT (c) 1989-1998. |
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| 11 | On-Line Applications Research Corporation (OAR). |
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| 12 | |
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| 13 | The license and distribution terms for this file may be |
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| 14 | found in the file LICENSE in this distribution. |
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| 15 | |
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| 16 | This software with is provided ``as is'' and with NO WARRANTY. |
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[aed742c] | 17 | |
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[a923a82] | 18 | ------------------------------------------------------------------------ |
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| 19 | |
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| 20 | RTEMS Performance Monitoring and Measurement Framework. |
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| 21 | |
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| 22 | This is the Capture Engine component. |
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| 23 | |
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| 24 | */ |
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| 25 | |
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[550c3df7] | 26 | #ifdef HAVE_CONFIG_H |
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| 27 | #include "config.h" |
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| 28 | #endif |
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| 29 | |
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[a923a82] | 30 | #include <stdlib.h> |
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[aebc8290] | 31 | #include <string.h> |
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[a923a82] | 32 | |
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| 33 | #include "capture.h" |
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| 34 | #include <rtems/score/states.inl> |
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| 35 | #include <rtems/score/wkspace.h> |
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| 36 | #include <rtems/score/wkspace.inl> |
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| 37 | |
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| 38 | /* |
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| 39 | * These events are always recorded and are not part of the |
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| 40 | * watch filters. |
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| 41 | */ |
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| 42 | #define RTEMS_CAPTURE_RECORD_EVENTS (RTEMS_CAPTURE_CREATED_BY_EVENT | \ |
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| 43 | RTEMS_CAPTURE_CREATED_EVENT | \ |
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| 44 | RTEMS_CAPTURE_STARTED_BY_EVENT | \ |
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| 45 | RTEMS_CAPTURE_STARTED_EVENT | \ |
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| 46 | RTEMS_CAPTURE_RESTARTED_BY_EVENT | \ |
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| 47 | RTEMS_CAPTURE_RESTARTED_EVENT | \ |
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| 48 | RTEMS_CAPTURE_DELETED_BY_EVENT | \ |
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| 49 | RTEMS_CAPTURE_DELETED_EVENT | \ |
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| 50 | RTEMS_CAPTURE_BEGIN_EVENT | \ |
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| 51 | RTEMS_CAPTURE_EXITTED_EVENT) |
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| 52 | |
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| 53 | /* |
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| 54 | * Global capture flags. |
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| 55 | */ |
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| 56 | #define RTEMS_CAPTURE_ON (1 << 0) |
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| 57 | #define RTEMS_CAPTURE_NO_MEMORY (1 << 1) |
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| 58 | #define RTEMS_CAPTURE_OVERFLOW (1 << 2) |
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| 59 | #define RTEMS_CAPTURE_TRIGGERED (1 << 3) |
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| 60 | #define RTEMS_CAPTURE_READER_ACTIVE (1 << 4) |
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| 61 | #define RTEMS_CAPTURE_READER_WAITING (1 << 5) |
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| 62 | #define RTEMS_CAPTURE_GLOBAL_WATCH (1 << 6) |
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| 63 | |
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| 64 | /* |
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| 65 | * RTEMS Capture Data. |
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| 66 | */ |
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| 67 | static rtems_capture_record_t* capture_records; |
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[3e08d4e] | 68 | static uint32_t capture_size; |
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| 69 | static uint32_t capture_count; |
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[a923a82] | 70 | static rtems_capture_record_t* capture_in; |
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[3e08d4e] | 71 | static uint32_t capture_out; |
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| 72 | static uint32_t capture_flags; |
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[a923a82] | 73 | static rtems_capture_task_t* capture_tasks; |
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| 74 | static rtems_capture_control_t* capture_controls; |
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| 75 | static int capture_extension_index; |
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| 76 | static rtems_id capture_id; |
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| 77 | static rtems_capture_timestamp capture_timestamp; |
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| 78 | static rtems_task_priority capture_ceiling; |
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| 79 | static rtems_task_priority capture_floor; |
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[3e08d4e] | 80 | static uint32_t capture_tick_period; |
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[a923a82] | 81 | static rtems_id capture_reader; |
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| 82 | |
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| 83 | /* |
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| 84 | * RTEMS Event text. |
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| 85 | */ |
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| 86 | static const char* capture_event_text[] = |
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| 87 | { |
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| 88 | "CREATED_BY", |
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| 89 | "CREATED", |
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| 90 | "STARTED_BY", |
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| 91 | "STARTED", |
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| 92 | "RESTARTED_BY", |
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| 93 | "RESTARTED", |
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| 94 | "DELETED_BY", |
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| 95 | "DELETED", |
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| 96 | "BEGIN", |
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| 97 | "EXITTED", |
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| 98 | "SWITCHED_OUT", |
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| 99 | "SWITCHED_IN", |
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| 100 | "TIMESTAMP" |
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| 101 | }; |
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| 102 | |
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| 103 | /* |
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| 104 | * rtems_capture_get_time |
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| 105 | * |
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| 106 | * DESCRIPTION: |
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| 107 | * |
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| 108 | * This function returns the current time. If a handler is provided |
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| 109 | * by the user get the time from that. |
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| 110 | */ |
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[3e08d4e] | 111 | static inline void rtems_capture_get_time (uint32_t * ticks, |
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| 112 | uint32_t * tick_offset) |
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[a923a82] | 113 | { |
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| 114 | if (capture_timestamp) |
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| 115 | capture_timestamp (ticks, tick_offset); |
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| 116 | else |
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| 117 | { |
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| 118 | *ticks = _Watchdog_Ticks_since_boot; |
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| 119 | *tick_offset = 0; |
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| 120 | } |
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| 121 | } |
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| 122 | |
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| 123 | /* |
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| 124 | * rtems_capture_match_names |
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| 125 | * |
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| 126 | * DESCRIPTION: |
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| 127 | * |
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| 128 | * This function compares rtems_names. It protects the |
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| 129 | * capture engine from a change to the way names are supported |
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| 130 | * in RTEMS. |
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| 131 | * |
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| 132 | */ |
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| 133 | static inline rtems_boolean |
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| 134 | rtems_capture_match_names (rtems_name lhs, rtems_name rhs) |
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| 135 | { |
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| 136 | return lhs == rhs; |
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| 137 | } |
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| 138 | |
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| 139 | /* |
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| 140 | * rtems_capture_dup_name |
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| 141 | * |
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| 142 | * DESCRIPTION: |
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| 143 | * |
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| 144 | * This function duplicates an rtems_names. It protects the |
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[08885d63] | 145 | * capture engine from a change to the way names are supported |
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[a923a82] | 146 | * in RTEMS. |
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| 147 | * |
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| 148 | */ |
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| 149 | static inline void |
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| 150 | rtems_capture_dup_name (rtems_name* dst, rtems_name src) |
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| 151 | { |
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| 152 | *dst = src; |
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| 153 | } |
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| 154 | |
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| 155 | /* |
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| 156 | * rtems_capture_name_in_group |
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| 157 | * |
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| 158 | * DESCRIPTION: |
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| 159 | * |
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| 160 | * This function sees if a name is in a group of names. |
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| 161 | * |
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| 162 | */ |
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| 163 | static inline rtems_boolean |
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| 164 | rtems_capture_name_in_group (rtems_name task, rtems_name* tasks) |
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| 165 | { |
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| 166 | if (tasks) |
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| 167 | { |
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| 168 | int i; |
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| 169 | for (i = 0; i < RTEMS_CAPTURE_TRIGGER_TASKS; i++) |
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| 170 | if (rtems_capture_match_names (task, *tasks++)) |
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| 171 | return 1; |
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| 172 | } |
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| 173 | return 0; |
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| 174 | } |
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| 175 | |
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| 176 | /* |
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| 177 | * rtems_capture_match_name_id |
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| 178 | * |
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| 179 | * DESCRIPTION: |
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| 180 | * |
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| 181 | * This function matches a name and/or id. |
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| 182 | */ |
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| 183 | static inline rtems_boolean |
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| 184 | rtems_capture_match_name_id (rtems_name lhs_name, |
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| 185 | rtems_id lhs_id, |
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| 186 | rtems_name rhs_name, |
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| 187 | rtems_id rhs_id) |
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| 188 | { |
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| 189 | /* |
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| 190 | * The left hand side name or id could be 0 which means a wildcard. |
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| 191 | */ |
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| 192 | if ((lhs_name == 0) && (lhs_id == rhs_id)) |
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| 193 | return 1; |
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| 194 | else if ((lhs_id == 0) || (lhs_id == rhs_id)) |
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| 195 | { |
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| 196 | if (rtems_capture_match_names (lhs_name, rhs_name)) |
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| 197 | return 1; |
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| 198 | } |
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| 199 | return 0; |
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| 200 | } |
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| 201 | |
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| 202 | /* |
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| 203 | * rtems_capture_init_stack_usage |
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| 204 | * |
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| 205 | * DESCRIPTION: |
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| 206 | * |
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| 207 | * This function setups a stack so its usage can be monitored. |
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| 208 | */ |
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| 209 | static inline void |
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| 210 | rtems_capture_init_stack_usage (rtems_capture_task_t* task) |
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| 211 | { |
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| 212 | if (task->tcb) |
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| 213 | { |
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[3e08d4e] | 214 | uint32_t * s; |
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| 215 | uint32_t i; |
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[a923a82] | 216 | |
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| 217 | task->stack_size = task->tcb->Start.Initial_stack.size; |
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| 218 | task->stack_clean = task->stack_size; |
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| 219 | |
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| 220 | s = task->tcb->Start.Initial_stack.area; |
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| 221 | |
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| 222 | for (i = 0; i < (task->stack_size - 128); i += 4) |
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| 223 | *(s++) = 0xdeaddead; |
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| 224 | } |
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| 225 | } |
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| 226 | |
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| 227 | /* |
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| 228 | * rtems_capture_find_control |
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| 229 | * |
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| 230 | * DESCRIPTION: |
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| 231 | * |
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| 232 | * This function searches for a trigger given a name. |
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| 233 | * |
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| 234 | */ |
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| 235 | static inline rtems_capture_control_t* |
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| 236 | rtems_capture_find_control (rtems_name name, rtems_id id) |
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| 237 | { |
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| 238 | rtems_capture_control_t* control; |
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[aed742c] | 239 | |
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[a923a82] | 240 | for (control = capture_controls; control != NULL; control = control->next) |
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| 241 | if (rtems_capture_match_name_id (name, id, control->name, control->id)) |
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| 242 | break; |
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| 243 | return control; |
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| 244 | } |
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| 245 | |
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| 246 | /* |
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| 247 | * rtems_capture_create_control |
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| 248 | * |
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| 249 | * DESCRIPTION: |
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| 250 | * |
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| 251 | * This function creates a capture control for the capture engine. |
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| 252 | * |
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| 253 | */ |
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| 254 | static inline rtems_capture_control_t* |
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| 255 | rtems_capture_create_control (rtems_name name, rtems_id id) |
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| 256 | { |
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| 257 | rtems_interrupt_level level; |
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| 258 | rtems_capture_control_t* control; |
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| 259 | rtems_capture_task_t* task; |
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| 260 | |
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| 261 | if ((name == 0) && (id == 0)) |
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| 262 | return NULL; |
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| 263 | |
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| 264 | control = rtems_capture_find_control (name, id); |
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[aed742c] | 265 | |
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[a923a82] | 266 | if (control == NULL) |
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| 267 | { |
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| 268 | control = _Workspace_Allocate (sizeof (rtems_capture_control_t)); |
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| 269 | |
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| 270 | if (control == NULL) |
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| 271 | { |
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| 272 | capture_flags |= RTEMS_CAPTURE_NO_MEMORY; |
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| 273 | return NULL; |
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| 274 | } |
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[aed742c] | 275 | |
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[a923a82] | 276 | control->name = name; |
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| 277 | control->id = id; |
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| 278 | control->flags = 0; |
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| 279 | |
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| 280 | memset (control->from, 0, sizeof (control->from)); |
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| 281 | memset (control->from_id, 0, sizeof (control->from_id)); |
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[aed742c] | 282 | |
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[a923a82] | 283 | rtems_interrupt_disable (level); |
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| 284 | |
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| 285 | control->next = capture_controls; |
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| 286 | capture_controls = control; |
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| 287 | |
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| 288 | /* |
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| 289 | * We need to scan the task list as set the control to the |
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| 290 | * tasks. |
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| 291 | */ |
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| 292 | for (task = capture_tasks; task != NULL; task = task->next) |
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| 293 | if (rtems_capture_match_name_id (name, id, task->name, task->id)) |
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| 294 | task->control = control; |
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| 295 | |
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| 296 | rtems_interrupt_enable (level); |
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| 297 | } |
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| 298 | |
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| 299 | return control; |
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| 300 | } |
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| 301 | |
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| 302 | /* |
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| 303 | * rtems_capture_create_capture_task |
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| 304 | * |
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| 305 | * DESCRIPTION: |
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| 306 | * |
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| 307 | * This function create the task control. |
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| 308 | * |
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| 309 | */ |
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| 310 | static inline rtems_capture_task_t* |
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| 311 | rtems_capture_create_capture_task (rtems_tcb* new_task) |
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| 312 | { |
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| 313 | rtems_interrupt_level level; |
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| 314 | rtems_capture_task_t* task; |
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| 315 | rtems_capture_control_t* control; |
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| 316 | |
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| 317 | task = _Workspace_Allocate (sizeof (rtems_capture_task_t)); |
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| 318 | |
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| 319 | if (task == NULL) |
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| 320 | { |
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| 321 | capture_flags |= RTEMS_CAPTURE_NO_MEMORY; |
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| 322 | return NULL; |
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| 323 | } |
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| 324 | |
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[12857dd] | 325 | rtems_capture_dup_name (&task->name, ((rtems_name) new_task->Object.name)); |
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[aed742c] | 326 | |
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[a923a82] | 327 | task->id = new_task->Object.id; |
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| 328 | task->flags = 0; |
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| 329 | task->in = 0; |
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| 330 | task->out = 0; |
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| 331 | task->tcb = new_task; |
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| 332 | task->ticks = 0; |
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| 333 | task->tick_offset = 0; |
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| 334 | task->ticks_in = 0; |
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| 335 | task->tick_offset_in = 0; |
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| 336 | task->control = 0; |
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| 337 | task->last_ticks = 0; |
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| 338 | task->last_tick_offset = 0; |
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| 339 | |
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| 340 | task->tcb->extensions[capture_extension_index] = task; |
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| 341 | |
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| 342 | task->start_priority = new_task->Start.initial_priority; |
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| 343 | task->stack_size = new_task->Start.Initial_stack.size; |
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| 344 | task->stack_clean = task->stack_size; |
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| 345 | |
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| 346 | rtems_interrupt_disable (level); |
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| 347 | |
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| 348 | task->next = capture_tasks; |
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| 349 | capture_tasks = task; |
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| 350 | |
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| 351 | rtems_interrupt_enable (level); |
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| 352 | |
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| 353 | /* |
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| 354 | * We need to scan the default control list to initialise |
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| 355 | * this control. |
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| 356 | */ |
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| 357 | |
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| 358 | for (control = capture_controls; control != NULL; control = control->next) |
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| 359 | if (rtems_capture_match_name_id (control->name, control->id, |
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| 360 | task->name, task->id)) |
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| 361 | task->control = control; |
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[aed742c] | 362 | |
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[a923a82] | 363 | return task; |
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| 364 | } |
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| 365 | |
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| 366 | /* |
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| 367 | * rtems_capture_record |
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| 368 | * |
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| 369 | * DESCRIPTION: |
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| 370 | * |
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| 371 | * This function records a capture record into the capture buffer. |
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| 372 | * |
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| 373 | */ |
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| 374 | static inline void |
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| 375 | rtems_capture_record (rtems_capture_task_t* task, |
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[3e08d4e] | 376 | uint32_t events) |
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[a923a82] | 377 | { |
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| 378 | /* |
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| 379 | * Check the watch state if we have a task control, and |
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| 380 | * the task's real priority is lower or equal to the ceiling. |
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| 381 | */ |
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| 382 | if (task) |
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| 383 | { |
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| 384 | rtems_capture_control_t* control; |
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| 385 | |
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| 386 | control = task->control; |
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| 387 | |
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| 388 | /* |
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| 389 | * Capure the record if we have an event that is always |
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| 390 | * captured, or the task's real priority is greater than the |
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| 391 | * watch ceiling, and the global watch or task watch is enabled. |
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| 392 | */ |
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| 393 | |
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| 394 | if ((events & RTEMS_CAPTURE_RECORD_EVENTS) || |
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| 395 | ((task->tcb->real_priority >= capture_ceiling) && |
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| 396 | (task->tcb->real_priority <= capture_floor) && |
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| 397 | ((capture_flags & RTEMS_CAPTURE_GLOBAL_WATCH) || |
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| 398 | (control && (control->flags & RTEMS_CAPTURE_WATCH))))) |
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| 399 | { |
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| 400 | rtems_interrupt_level level; |
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[aed742c] | 401 | |
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[a923a82] | 402 | rtems_interrupt_disable (level); |
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[aed742c] | 403 | |
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[a923a82] | 404 | if (capture_count < capture_size) |
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| 405 | { |
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| 406 | capture_count++; |
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| 407 | capture_in->task = task; |
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| 408 | capture_in->events = (events | |
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| 409 | (task->tcb->real_priority) | |
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| 410 | (task->tcb->current_priority << 8)); |
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| 411 | |
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| 412 | if ((events & RTEMS_CAPTURE_RECORD_EVENTS) == 0) |
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| 413 | task->flags |= RTEMS_CAPTURE_TRACED; |
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| 414 | |
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| 415 | rtems_capture_get_time (&capture_in->ticks, &capture_in->tick_offset); |
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| 416 | |
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| 417 | if (capture_in == &capture_records[capture_size - 1]) |
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| 418 | capture_in = capture_records; |
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| 419 | else |
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[aed742c] | 420 | capture_in++; |
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[a923a82] | 421 | } |
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| 422 | else |
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| 423 | capture_flags |= RTEMS_CAPTURE_OVERFLOW; |
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| 424 | rtems_interrupt_enable (level); |
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| 425 | } |
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| 426 | } |
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| 427 | } |
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| 428 | |
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| 429 | /* |
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| 430 | * rtems_capture_create_task |
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| 431 | * |
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| 432 | * DESCRIPTION: |
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| 433 | * |
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| 434 | * This function is called when a task is created. |
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| 435 | * |
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| 436 | */ |
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| 437 | static rtems_boolean |
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| 438 | rtems_capture_create_task (rtems_tcb* current_task, |
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| 439 | rtems_tcb* new_task) |
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| 440 | { |
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| 441 | rtems_capture_task_t* ct; |
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| 442 | rtems_capture_task_t* nt; |
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| 443 | |
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| 444 | ct = current_task->extensions[capture_extension_index]; |
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| 445 | |
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| 446 | /* |
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| 447 | * The task ponters may not be known as the task may have |
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| 448 | * been created before the capture engine was open. Add them. |
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| 449 | */ |
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| 450 | |
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| 451 | if (ct == NULL) |
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| 452 | ct = rtems_capture_create_capture_task (current_task); |
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| 453 | |
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| 454 | /* |
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| 455 | * Create the new task's capture control block. |
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| 456 | */ |
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| 457 | nt = rtems_capture_create_capture_task (new_task); |
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| 458 | |
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| 459 | /* |
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| 460 | * If we are logging then record this fact. |
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| 461 | */ |
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| 462 | rtems_capture_record (ct, RTEMS_CAPTURE_CREATED_BY_EVENT); |
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| 463 | rtems_capture_record (nt, RTEMS_CAPTURE_CREATED_EVENT); |
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| 464 | |
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| 465 | return 1 == 1; |
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| 466 | } |
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| 467 | |
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| 468 | /* |
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| 469 | * rtems_capture_start_task |
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| 470 | * |
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| 471 | * DESCRIPTION: |
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| 472 | * |
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| 473 | * This function is called when a task is started. |
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| 474 | * |
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| 475 | */ |
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| 476 | static rtems_extension |
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| 477 | rtems_capture_start_task (rtems_tcb* current_task, |
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| 478 | rtems_tcb* started_task) |
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| 479 | { |
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| 480 | /* |
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| 481 | * Get the capture task control block so we can trace this |
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| 482 | * event. |
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| 483 | */ |
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| 484 | rtems_capture_task_t* ct; |
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| 485 | rtems_capture_task_t* st; |
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| 486 | |
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| 487 | ct = current_task->extensions[capture_extension_index]; |
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| 488 | st = started_task->extensions[capture_extension_index]; |
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| 489 | |
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| 490 | /* |
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| 491 | * The task ponters may not be known as the task may have |
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| 492 | * been created before the capture engine was open. Add them. |
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| 493 | */ |
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| 494 | |
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| 495 | if (ct == NULL) |
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| 496 | ct = rtems_capture_create_capture_task (current_task); |
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| 497 | |
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| 498 | if (st == NULL) |
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| 499 | st = rtems_capture_create_capture_task (started_task); |
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| 500 | |
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| 501 | rtems_capture_record (ct, RTEMS_CAPTURE_STARTED_BY_EVENT); |
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| 502 | rtems_capture_record (st, RTEMS_CAPTURE_STARTED_EVENT); |
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[aed742c] | 503 | |
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[a923a82] | 504 | rtems_capture_init_stack_usage (st); |
---|
| 505 | } |
---|
| 506 | |
---|
| 507 | /* |
---|
| 508 | * rtems_capture_restart_task |
---|
| 509 | * |
---|
| 510 | * DESCRIPTION: |
---|
| 511 | * |
---|
| 512 | * This function is called when a task is restarted. |
---|
| 513 | * |
---|
| 514 | */ |
---|
| 515 | static rtems_extension |
---|
| 516 | rtems_capture_restart_task (rtems_tcb* current_task, |
---|
| 517 | rtems_tcb* restarted_task) |
---|
| 518 | { |
---|
| 519 | /* |
---|
| 520 | * Get the capture task control block so we can trace this |
---|
| 521 | * event. |
---|
| 522 | */ |
---|
| 523 | rtems_capture_task_t* ct; |
---|
| 524 | rtems_capture_task_t* rt; |
---|
| 525 | |
---|
| 526 | ct = current_task->extensions[capture_extension_index]; |
---|
| 527 | rt = restarted_task->extensions[capture_extension_index]; |
---|
| 528 | |
---|
| 529 | /* |
---|
| 530 | * The task ponters may not be known as the task may have |
---|
| 531 | * been created before the capture engine was open. Add them. |
---|
| 532 | */ |
---|
| 533 | |
---|
| 534 | if (ct == NULL) |
---|
| 535 | ct = rtems_capture_create_capture_task (current_task); |
---|
| 536 | |
---|
| 537 | if (rt == NULL) |
---|
| 538 | rt = rtems_capture_create_capture_task (restarted_task); |
---|
| 539 | |
---|
| 540 | rtems_capture_record (ct, RTEMS_CAPTURE_RESTARTED_BY_EVENT); |
---|
| 541 | rtems_capture_record (rt, RTEMS_CAPTURE_RESTARTED_EVENT); |
---|
| 542 | |
---|
| 543 | rtems_capture_task_stack_usage (rt); |
---|
| 544 | rtems_capture_init_stack_usage (rt); |
---|
| 545 | } |
---|
| 546 | |
---|
| 547 | /* |
---|
| 548 | * rtems_capture_delete_task |
---|
| 549 | * |
---|
| 550 | * DESCRIPTION: |
---|
| 551 | * |
---|
| 552 | * This function is called when a task is deleted. |
---|
| 553 | * |
---|
| 554 | */ |
---|
| 555 | static rtems_extension |
---|
| 556 | rtems_capture_delete_task (rtems_tcb* current_task, |
---|
| 557 | rtems_tcb* deleted_task) |
---|
| 558 | { |
---|
| 559 | /* |
---|
| 560 | * Get the capture task control block so we can trace this |
---|
| 561 | * event. |
---|
| 562 | */ |
---|
| 563 | rtems_capture_task_t* ct; |
---|
| 564 | rtems_capture_task_t* dt; |
---|
| 565 | |
---|
| 566 | /* |
---|
| 567 | * The task ponters may not be known as the task may have |
---|
| 568 | * been created before the capture engine was open. Add them. |
---|
| 569 | */ |
---|
| 570 | |
---|
| 571 | ct = current_task->extensions[capture_extension_index]; |
---|
| 572 | dt = deleted_task->extensions[capture_extension_index]; |
---|
| 573 | |
---|
| 574 | if (ct == NULL) |
---|
| 575 | ct = rtems_capture_create_capture_task (current_task); |
---|
| 576 | |
---|
| 577 | if (dt == NULL) |
---|
| 578 | dt = rtems_capture_create_capture_task (deleted_task); |
---|
| 579 | |
---|
| 580 | rtems_capture_record (ct, RTEMS_CAPTURE_DELETED_BY_EVENT); |
---|
| 581 | rtems_capture_record (dt, RTEMS_CAPTURE_DELETED_EVENT); |
---|
| 582 | |
---|
| 583 | rtems_capture_task_stack_usage (dt); |
---|
| 584 | |
---|
| 585 | /* |
---|
| 586 | * This task's tcb will be invalid. |
---|
| 587 | */ |
---|
| 588 | dt->tcb = 0; |
---|
| 589 | } |
---|
| 590 | |
---|
| 591 | /* |
---|
| 592 | * rtems_capture_begin_task |
---|
| 593 | * |
---|
| 594 | * DESCRIPTION: |
---|
| 595 | * |
---|
| 596 | * This function is called when a task is begun. |
---|
| 597 | * |
---|
| 598 | */ |
---|
| 599 | static rtems_extension |
---|
| 600 | rtems_capture_begin_task (rtems_tcb* begin_task) |
---|
| 601 | { |
---|
| 602 | /* |
---|
| 603 | * Get the capture task control block so we can trace this |
---|
| 604 | * event. |
---|
| 605 | */ |
---|
| 606 | rtems_capture_task_t* bt; |
---|
| 607 | |
---|
| 608 | bt = begin_task->extensions[capture_extension_index]; |
---|
| 609 | |
---|
| 610 | /* |
---|
| 611 | * The task ponters may not be known as the task may have |
---|
| 612 | * been created before the capture engine was open. Add them. |
---|
| 613 | */ |
---|
| 614 | |
---|
| 615 | if (bt == NULL) |
---|
| 616 | bt = rtems_capture_create_capture_task (begin_task); |
---|
| 617 | |
---|
| 618 | rtems_capture_record (bt, RTEMS_CAPTURE_BEGIN_EVENT); |
---|
| 619 | } |
---|
| 620 | |
---|
| 621 | /* |
---|
| 622 | * rtems_capture_exitted_task |
---|
| 623 | * |
---|
| 624 | * DESCRIPTION: |
---|
| 625 | * |
---|
| 626 | * This function is called when a task is exitted. That is |
---|
| 627 | * returned rather than was deleted. |
---|
| 628 | * |
---|
| 629 | */ |
---|
| 630 | static rtems_extension |
---|
| 631 | rtems_capture_exitted_task (rtems_tcb* exitted_task) |
---|
| 632 | { |
---|
| 633 | /* |
---|
| 634 | * Get the capture task control block so we can trace this |
---|
| 635 | * event. |
---|
| 636 | */ |
---|
| 637 | rtems_capture_task_t* et; |
---|
| 638 | |
---|
| 639 | et = exitted_task->extensions[capture_extension_index]; |
---|
| 640 | |
---|
| 641 | /* |
---|
| 642 | * The task ponters may not be known as the task may have |
---|
| 643 | * been created before the capture engine was open. Add them. |
---|
| 644 | */ |
---|
| 645 | |
---|
| 646 | if (et == NULL) |
---|
| 647 | et = rtems_capture_create_capture_task (exitted_task); |
---|
| 648 | |
---|
| 649 | rtems_capture_record (et, RTEMS_CAPTURE_EXITTED_EVENT); |
---|
| 650 | |
---|
| 651 | rtems_capture_task_stack_usage (et); |
---|
| 652 | } |
---|
| 653 | |
---|
| 654 | /* |
---|
| 655 | * rtems_capture_switch_task |
---|
| 656 | * |
---|
| 657 | * DESCRIPTION: |
---|
| 658 | * |
---|
| 659 | * This function is called when a context is switched. |
---|
| 660 | * |
---|
| 661 | */ |
---|
| 662 | static rtems_extension |
---|
| 663 | rtems_capture_switch_task (rtems_tcb* current_task, |
---|
| 664 | rtems_tcb* heir_task) |
---|
| 665 | { |
---|
| 666 | /* |
---|
| 667 | * Only perform context switch trace processing if tracing is |
---|
| 668 | * enabled. |
---|
| 669 | */ |
---|
| 670 | if (capture_flags & RTEMS_CAPTURE_ON) |
---|
| 671 | { |
---|
[3e08d4e] | 672 | uint32_t ticks; |
---|
| 673 | uint32_t tick_offset; |
---|
[aed742c] | 674 | |
---|
[a923a82] | 675 | /* |
---|
| 676 | * Get the cpature task control block so we can update the |
---|
| 677 | * reference anbd perform any watch or trigger functions. |
---|
| 678 | * The task ponters may not be known as the task may have |
---|
| 679 | * been created before the capture engine was open. Add them. |
---|
| 680 | */ |
---|
| 681 | rtems_capture_task_t* ct; |
---|
| 682 | rtems_capture_task_t* ht; |
---|
| 683 | |
---|
| 684 | if (_States_Is_transient (current_task->current_state)) |
---|
| 685 | { |
---|
| 686 | rtems_id ct_id = current_task->Object.id; |
---|
| 687 | |
---|
| 688 | for (ct = capture_tasks; ct; ct = ct->next) |
---|
| 689 | if (ct->id == ct_id) |
---|
| 690 | break; |
---|
| 691 | } |
---|
| 692 | else |
---|
| 693 | { |
---|
| 694 | ct = current_task->extensions[capture_extension_index]; |
---|
| 695 | |
---|
| 696 | if (ct == NULL) |
---|
| 697 | ct = rtems_capture_create_capture_task (current_task); |
---|
| 698 | } |
---|
| 699 | |
---|
| 700 | ht = heir_task->extensions[capture_extension_index]; |
---|
| 701 | |
---|
| 702 | if (ht == NULL) |
---|
| 703 | ht = rtems_capture_create_capture_task (heir_task); |
---|
| 704 | |
---|
| 705 | /* |
---|
| 706 | * Update the execution time. Assume the tick will not overflow |
---|
| 707 | * for now. This may need to change. |
---|
| 708 | */ |
---|
| 709 | rtems_capture_get_time (&ticks, &tick_offset); |
---|
| 710 | |
---|
| 711 | /* |
---|
| 712 | * We could end up with null pointers for both the current task |
---|
| 713 | * and the heir task. |
---|
| 714 | */ |
---|
| 715 | |
---|
| 716 | if (ht) |
---|
| 717 | { |
---|
| 718 | ht->in++; |
---|
| 719 | ht->ticks_in = ticks; |
---|
| 720 | ht->tick_offset_in = tick_offset; |
---|
| 721 | } |
---|
[aed742c] | 722 | |
---|
[a923a82] | 723 | if (ct) |
---|
| 724 | { |
---|
| 725 | ct->out++; |
---|
| 726 | ct->ticks += ticks - ct->ticks_in; |
---|
| 727 | |
---|
| 728 | if (capture_timestamp) |
---|
| 729 | { |
---|
| 730 | tick_offset += capture_tick_period - ct->tick_offset_in; |
---|
[aed742c] | 731 | |
---|
[a923a82] | 732 | if (tick_offset < capture_tick_period) |
---|
| 733 | ct->tick_offset = tick_offset; |
---|
| 734 | else |
---|
| 735 | { |
---|
| 736 | ct->ticks++; |
---|
| 737 | ct->tick_offset = tick_offset - capture_tick_period; |
---|
| 738 | } |
---|
| 739 | } |
---|
| 740 | else |
---|
| 741 | { |
---|
| 742 | ct->tick_offset += 100; |
---|
| 743 | } |
---|
| 744 | } |
---|
| 745 | |
---|
| 746 | /* |
---|
| 747 | * If we have not triggered then see if this is a trigger condition. |
---|
| 748 | */ |
---|
| 749 | if (!(capture_flags & RTEMS_CAPTURE_TRIGGERED)) |
---|
| 750 | { |
---|
| 751 | rtems_capture_control_t* cc = NULL; |
---|
| 752 | rtems_capture_control_t* hc = NULL; |
---|
| 753 | |
---|
| 754 | if (ct) |
---|
| 755 | { |
---|
| 756 | cc = ct->control; |
---|
[aed742c] | 757 | |
---|
[a923a82] | 758 | /* |
---|
| 759 | * Check the current task for a TO_ANY trigger. |
---|
| 760 | */ |
---|
| 761 | if (cc && (cc->flags & RTEMS_CAPTURE_TO_ANY)) |
---|
| 762 | { |
---|
| 763 | capture_flags |= RTEMS_CAPTURE_TRIGGERED; |
---|
| 764 | goto triggered; |
---|
| 765 | } |
---|
| 766 | } |
---|
| 767 | |
---|
| 768 | if (ht) |
---|
| 769 | { |
---|
| 770 | hc = ht->control; |
---|
| 771 | |
---|
| 772 | /* |
---|
| 773 | * Check the next task for a FROM_ANY. |
---|
| 774 | */ |
---|
| 775 | if (hc && (hc->flags & RTEMS_CAPTURE_FROM_ANY)) |
---|
| 776 | { |
---|
| 777 | capture_flags |= RTEMS_CAPTURE_TRIGGERED; |
---|
| 778 | goto triggered; |
---|
| 779 | } |
---|
| 780 | } |
---|
| 781 | |
---|
| 782 | /* |
---|
| 783 | * Check is the trigger is from the current task |
---|
| 784 | * to the next task. |
---|
| 785 | */ |
---|
| 786 | if (cc && hc && (hc->flags & RTEMS_CAPTURE_FROM_TO)) |
---|
| 787 | if (rtems_capture_name_in_group (cc->name, hc->from)) |
---|
| 788 | { |
---|
| 789 | capture_flags |= RTEMS_CAPTURE_TRIGGERED; |
---|
| 790 | goto triggered; |
---|
| 791 | } |
---|
| 792 | } |
---|
| 793 | else |
---|
| 794 | { |
---|
| 795 | triggered: |
---|
| 796 | |
---|
| 797 | rtems_capture_record (ct, RTEMS_CAPTURE_SWITCHED_OUT_EVENT); |
---|
| 798 | rtems_capture_record (ht, RTEMS_CAPTURE_SWITCHED_IN_EVENT); |
---|
| 799 | } |
---|
| 800 | } |
---|
| 801 | } |
---|
| 802 | |
---|
| 803 | /* |
---|
| 804 | * rtems_capture_open |
---|
| 805 | * |
---|
| 806 | * DESCRIPTION: |
---|
| 807 | * |
---|
| 808 | * This function initialises the realtime capture engine allocating the trace |
---|
| 809 | * buffer. It is assumed we have a working heap at stage of initialisation. |
---|
| 810 | * |
---|
| 811 | */ |
---|
| 812 | rtems_status_code |
---|
[3e08d4e] | 813 | rtems_capture_open (uint32_t size, rtems_capture_timestamp timestamp) |
---|
[a923a82] | 814 | { |
---|
| 815 | rtems_extensions_table capture_extensions; |
---|
| 816 | rtems_name name; |
---|
| 817 | rtems_status_code sc; |
---|
| 818 | |
---|
| 819 | /* |
---|
| 820 | * See if the capture engine is already open. |
---|
| 821 | */ |
---|
| 822 | |
---|
| 823 | if (capture_records) |
---|
| 824 | return RTEMS_RESOURCE_IN_USE; |
---|
| 825 | |
---|
| 826 | capture_records = malloc (size * sizeof (rtems_capture_record_t)); |
---|
| 827 | |
---|
| 828 | if (capture_records == NULL) |
---|
| 829 | return RTEMS_NO_MEMORY; |
---|
| 830 | |
---|
| 831 | capture_size = size; |
---|
| 832 | capture_count = 0; |
---|
| 833 | capture_in = capture_records; |
---|
| 834 | capture_out = 0; |
---|
| 835 | capture_flags = 0; |
---|
| 836 | capture_tasks = NULL; |
---|
| 837 | capture_ceiling = 0; |
---|
| 838 | capture_floor = 255; |
---|
| 839 | |
---|
| 840 | /* |
---|
| 841 | * Create the extension table. This is copied so we |
---|
| 842 | * can create it as a local. |
---|
| 843 | */ |
---|
| 844 | capture_extensions.thread_create = rtems_capture_create_task; |
---|
| 845 | capture_extensions.thread_start = rtems_capture_start_task; |
---|
| 846 | capture_extensions.thread_restart = rtems_capture_restart_task; |
---|
| 847 | capture_extensions.thread_delete = rtems_capture_delete_task; |
---|
| 848 | capture_extensions.thread_switch = rtems_capture_switch_task; |
---|
| 849 | capture_extensions.thread_begin = rtems_capture_begin_task; |
---|
| 850 | capture_extensions.thread_exitted = rtems_capture_exitted_task; |
---|
| 851 | capture_extensions.fatal = NULL; |
---|
| 852 | |
---|
| 853 | /* |
---|
| 854 | * Get the tick period from the BSP Configuration Table. |
---|
| 855 | */ |
---|
| 856 | capture_tick_period = _Configuration_Table->microseconds_per_tick; |
---|
[aed742c] | 857 | |
---|
[a923a82] | 858 | /* |
---|
| 859 | * Register the user extension handlers for the CAPture Engine. |
---|
| 860 | */ |
---|
| 861 | name = rtems_build_name ('C', 'A', 'P', 'E'); |
---|
| 862 | sc = rtems_extension_create (name, &capture_extensions, &capture_id); |
---|
| 863 | |
---|
| 864 | if (sc != RTEMS_SUCCESSFUL) |
---|
| 865 | { |
---|
| 866 | capture_id = 0; |
---|
| 867 | free (capture_records); |
---|
| 868 | capture_records = NULL; |
---|
| 869 | } |
---|
| 870 | else |
---|
| 871 | { |
---|
| 872 | capture_extension_index = rtems_get_index (capture_id);; |
---|
| 873 | } |
---|
| 874 | |
---|
| 875 | /* |
---|
| 876 | * Iterate over the list of existing tasks. |
---|
| 877 | */ |
---|
| 878 | |
---|
| 879 | return sc; |
---|
| 880 | } |
---|
| 881 | |
---|
| 882 | /* |
---|
| 883 | * rtems_capture_close |
---|
| 884 | * |
---|
| 885 | * DESCRIPTION: |
---|
| 886 | * |
---|
| 887 | * This function shutdowns the capture engine and release any claimed |
---|
| 888 | * resources. |
---|
| 889 | */ |
---|
| 890 | rtems_status_code |
---|
| 891 | rtems_capture_close () |
---|
| 892 | { |
---|
| 893 | rtems_interrupt_level level; |
---|
| 894 | rtems_capture_task_t* task; |
---|
| 895 | rtems_capture_control_t* control; |
---|
| 896 | rtems_capture_record_t* records; |
---|
| 897 | rtems_status_code sc; |
---|
| 898 | |
---|
| 899 | rtems_interrupt_disable (level); |
---|
| 900 | |
---|
| 901 | if (!capture_records) |
---|
| 902 | { |
---|
| 903 | rtems_interrupt_enable (level); |
---|
| 904 | return RTEMS_SUCCESSFUL; |
---|
| 905 | } |
---|
| 906 | |
---|
| 907 | capture_flags &= ~RTEMS_CAPTURE_ON; |
---|
| 908 | |
---|
| 909 | records = capture_records; |
---|
| 910 | capture_records = NULL; |
---|
| 911 | |
---|
| 912 | rtems_interrupt_enable (level); |
---|
| 913 | |
---|
| 914 | /* |
---|
| 915 | * Delete the extension first. This means we are now able to |
---|
| 916 | * release the resources we have without them being used. |
---|
| 917 | */ |
---|
| 918 | |
---|
| 919 | sc = rtems_extension_delete (capture_id); |
---|
| 920 | |
---|
| 921 | if (sc != RTEMS_SUCCESSFUL) |
---|
| 922 | return sc; |
---|
| 923 | |
---|
| 924 | task = capture_tasks; |
---|
[aed742c] | 925 | |
---|
[a923a82] | 926 | while (task) |
---|
| 927 | { |
---|
| 928 | rtems_capture_task_t* delete = task; |
---|
| 929 | task = task->next; |
---|
| 930 | _Workspace_Free (delete); |
---|
| 931 | } |
---|
| 932 | |
---|
| 933 | capture_tasks = NULL; |
---|
| 934 | |
---|
| 935 | control = capture_controls; |
---|
[aed742c] | 936 | |
---|
[a923a82] | 937 | while (control) |
---|
| 938 | { |
---|
| 939 | rtems_capture_control_t* delete = control; |
---|
| 940 | control = control->next; |
---|
| 941 | _Workspace_Free (delete); |
---|
| 942 | } |
---|
| 943 | |
---|
| 944 | capture_controls = NULL; |
---|
| 945 | |
---|
| 946 | if (capture_records) |
---|
| 947 | { |
---|
| 948 | free (capture_records); |
---|
| 949 | capture_records = NULL; |
---|
| 950 | } |
---|
| 951 | |
---|
| 952 | return RTEMS_SUCCESSFUL; |
---|
| 953 | } |
---|
| 954 | |
---|
| 955 | /* |
---|
| 956 | * rtems_capture_control |
---|
| 957 | * |
---|
| 958 | * DESCRIPTION: |
---|
| 959 | * |
---|
| 960 | * This function allows control of tracing at a global level. |
---|
| 961 | */ |
---|
| 962 | rtems_status_code |
---|
| 963 | rtems_capture_control (rtems_boolean enable) |
---|
| 964 | { |
---|
| 965 | rtems_interrupt_level level; |
---|
| 966 | |
---|
| 967 | rtems_interrupt_disable (level); |
---|
| 968 | |
---|
| 969 | if (!capture_records) |
---|
| 970 | { |
---|
| 971 | rtems_interrupt_enable (level); |
---|
| 972 | return RTEMS_UNSATISFIED; |
---|
| 973 | } |
---|
| 974 | |
---|
| 975 | if (enable) |
---|
| 976 | capture_flags |= RTEMS_CAPTURE_ON; |
---|
| 977 | else |
---|
| 978 | capture_flags &= ~RTEMS_CAPTURE_ON; |
---|
| 979 | |
---|
| 980 | rtems_interrupt_enable (level); |
---|
| 981 | |
---|
| 982 | return RTEMS_SUCCESSFUL; |
---|
| 983 | } |
---|
| 984 | |
---|
| 985 | /* |
---|
| 986 | * rtems_capture_flush |
---|
| 987 | * |
---|
| 988 | * DESCRIPTION: |
---|
| 989 | * |
---|
| 990 | * This function flushes the capture buffer. The prime parameter allows the |
---|
| 991 | * capture engine to also be primed again. |
---|
| 992 | */ |
---|
| 993 | rtems_status_code |
---|
| 994 | rtems_capture_flush (rtems_boolean prime) |
---|
| 995 | { |
---|
| 996 | rtems_interrupt_level level; |
---|
| 997 | rtems_capture_task_t* task; |
---|
| 998 | |
---|
| 999 | rtems_interrupt_disable (level); |
---|
| 1000 | |
---|
| 1001 | for (task = capture_tasks; task != NULL; task = task->next) |
---|
| 1002 | task->flags &= ~RTEMS_CAPTURE_TRACED; |
---|
| 1003 | |
---|
| 1004 | if (prime) |
---|
| 1005 | capture_flags &= ~(RTEMS_CAPTURE_TRIGGERED | RTEMS_CAPTURE_OVERFLOW); |
---|
| 1006 | else |
---|
| 1007 | capture_flags &= ~RTEMS_CAPTURE_OVERFLOW; |
---|
| 1008 | |
---|
| 1009 | capture_in = capture_records; |
---|
| 1010 | capture_out = 0; |
---|
| 1011 | |
---|
[aed742c] | 1012 | rtems_interrupt_enable (level); |
---|
[a923a82] | 1013 | |
---|
| 1014 | return RTEMS_SUCCESSFUL; |
---|
| 1015 | } |
---|
| 1016 | |
---|
| 1017 | /* |
---|
| 1018 | * rtems_capture_watch_add |
---|
| 1019 | * |
---|
| 1020 | * DESCRIPTION: |
---|
| 1021 | * |
---|
| 1022 | * This function defines a watch for a specific task given a name. A watch |
---|
| 1023 | * causes it to be traced either in or out of context. The watch can be |
---|
| 1024 | * optionally enabled or disabled with the set routine. It is disabled by |
---|
| 1025 | * default. |
---|
| 1026 | */ |
---|
| 1027 | rtems_status_code |
---|
| 1028 | rtems_capture_watch_add (rtems_name name, rtems_id id) |
---|
| 1029 | { |
---|
| 1030 | rtems_capture_control_t* control; |
---|
| 1031 | |
---|
| 1032 | if ((name == 0) && (id == 0)) |
---|
| 1033 | return RTEMS_UNSATISFIED; |
---|
| 1034 | |
---|
| 1035 | control = rtems_capture_find_control (name, id); |
---|
| 1036 | |
---|
| 1037 | if (control && !id) |
---|
| 1038 | return RTEMS_TOO_MANY; |
---|
| 1039 | |
---|
| 1040 | if (!control) |
---|
| 1041 | control = rtems_capture_create_control (name, id); |
---|
| 1042 | |
---|
| 1043 | if (!control) |
---|
| 1044 | return RTEMS_NO_MEMORY; |
---|
| 1045 | |
---|
| 1046 | return RTEMS_SUCCESSFUL; |
---|
| 1047 | } |
---|
| 1048 | |
---|
| 1049 | /* |
---|
| 1050 | * rtems_capture_watch_del |
---|
| 1051 | * |
---|
| 1052 | * DESCRIPTION: |
---|
| 1053 | * |
---|
| 1054 | * This function removes a watch for a specific task given a name. The task |
---|
| 1055 | * description will still exist if referenced by a trace record in the trace |
---|
| 1056 | * buffer or a global watch is defined. |
---|
| 1057 | */ |
---|
| 1058 | rtems_status_code |
---|
| 1059 | rtems_capture_watch_del (rtems_name name, rtems_id id) |
---|
| 1060 | { |
---|
| 1061 | rtems_interrupt_level level; |
---|
| 1062 | rtems_capture_control_t* control; |
---|
| 1063 | rtems_capture_control_t** prev_control; |
---|
| 1064 | rtems_capture_task_t* task; |
---|
| 1065 | rtems_boolean found = 0; |
---|
| 1066 | |
---|
| 1067 | /* |
---|
| 1068 | * Should this test be for wildcards ? |
---|
| 1069 | */ |
---|
| 1070 | |
---|
| 1071 | for (prev_control = &capture_controls, control = capture_controls; |
---|
| 1072 | control != NULL; ) |
---|
| 1073 | { |
---|
| 1074 | if (rtems_capture_match_name_id (name, id, control->name, control->id)) |
---|
| 1075 | { |
---|
| 1076 | rtems_interrupt_disable (level); |
---|
[aed742c] | 1077 | |
---|
[a923a82] | 1078 | for (task = capture_tasks; task != NULL; task = task->next) |
---|
| 1079 | if (task->control == control) |
---|
| 1080 | task->control = 0; |
---|
| 1081 | |
---|
| 1082 | *prev_control = control->next; |
---|
| 1083 | |
---|
| 1084 | rtems_interrupt_enable (level); |
---|
| 1085 | |
---|
| 1086 | _Workspace_Free (control); |
---|
| 1087 | |
---|
| 1088 | control = *prev_control; |
---|
| 1089 | |
---|
| 1090 | found = 1; |
---|
| 1091 | } |
---|
| 1092 | else |
---|
| 1093 | { |
---|
| 1094 | prev_control = &control->next; |
---|
| 1095 | control = control->next; |
---|
| 1096 | } |
---|
| 1097 | } |
---|
| 1098 | |
---|
| 1099 | if (found) |
---|
| 1100 | return RTEMS_SUCCESSFUL; |
---|
| 1101 | |
---|
| 1102 | return RTEMS_INVALID_NAME; |
---|
| 1103 | } |
---|
| 1104 | |
---|
| 1105 | /* |
---|
| 1106 | * rtems_capture_watch_set |
---|
| 1107 | * |
---|
| 1108 | * DESCRIPTION: |
---|
| 1109 | * |
---|
| 1110 | * This function allows control of a watch. The watch can be enabled or |
---|
| 1111 | * disabled. |
---|
| 1112 | */ |
---|
| 1113 | rtems_status_code |
---|
| 1114 | rtems_capture_watch_ctrl (rtems_name name, rtems_id id, rtems_boolean enable) |
---|
| 1115 | { |
---|
| 1116 | rtems_interrupt_level level; |
---|
| 1117 | rtems_capture_control_t* control; |
---|
| 1118 | rtems_boolean found = 0; |
---|
[aed742c] | 1119 | |
---|
[a923a82] | 1120 | /* |
---|
| 1121 | * Find the control and then set the watch. It must exist before it can |
---|
| 1122 | * be controlled. |
---|
| 1123 | */ |
---|
| 1124 | for (control = capture_controls; control != NULL; control = control->next) |
---|
| 1125 | { |
---|
| 1126 | if (rtems_capture_match_name_id (name, id, control->name, control->id)) |
---|
| 1127 | { |
---|
| 1128 | rtems_interrupt_disable (level); |
---|
| 1129 | |
---|
| 1130 | if (enable) |
---|
| 1131 | control->flags |= RTEMS_CAPTURE_WATCH; |
---|
| 1132 | else |
---|
| 1133 | control->flags &= ~RTEMS_CAPTURE_WATCH; |
---|
| 1134 | |
---|
| 1135 | rtems_interrupt_enable (level); |
---|
| 1136 | |
---|
| 1137 | found = 1; |
---|
[aed742c] | 1138 | } |
---|
[a923a82] | 1139 | } |
---|
| 1140 | |
---|
| 1141 | if (found) |
---|
| 1142 | return RTEMS_SUCCESSFUL; |
---|
| 1143 | |
---|
| 1144 | return RTEMS_INVALID_NAME; |
---|
| 1145 | } |
---|
| 1146 | |
---|
| 1147 | /* |
---|
| 1148 | * rtems_capture_watch_global |
---|
| 1149 | * |
---|
| 1150 | * DESCRIPTION: |
---|
| 1151 | * |
---|
| 1152 | * This function allows control of a global watch. The watch can be enabled or |
---|
| 1153 | * disabled. A global watch configures all tasks below the ceiling and above |
---|
| 1154 | * the floor to be traced. |
---|
| 1155 | */ |
---|
| 1156 | rtems_status_code |
---|
| 1157 | rtems_capture_watch_global (rtems_boolean enable) |
---|
| 1158 | { |
---|
| 1159 | rtems_interrupt_level level; |
---|
[aed742c] | 1160 | |
---|
[a923a82] | 1161 | rtems_interrupt_disable (level); |
---|
| 1162 | |
---|
| 1163 | /* |
---|
| 1164 | * We need to keep specific and global watches separate so |
---|
| 1165 | * a global enable/disable does not lose a specific watch. |
---|
| 1166 | */ |
---|
| 1167 | if (enable) |
---|
| 1168 | capture_flags |= RTEMS_CAPTURE_GLOBAL_WATCH; |
---|
| 1169 | else |
---|
| 1170 | capture_flags &= ~RTEMS_CAPTURE_GLOBAL_WATCH; |
---|
| 1171 | |
---|
| 1172 | rtems_interrupt_enable (level); |
---|
| 1173 | |
---|
| 1174 | return RTEMS_SUCCESSFUL; |
---|
| 1175 | } |
---|
| 1176 | |
---|
| 1177 | /* |
---|
| 1178 | * rtems_capture_watch_global_on |
---|
| 1179 | * |
---|
| 1180 | * DESCRIPTION: |
---|
| 1181 | * |
---|
| 1182 | * This function returns the global watch state. |
---|
| 1183 | */ |
---|
| 1184 | rtems_boolean |
---|
| 1185 | rtems_capture_watch_global_on () |
---|
| 1186 | { |
---|
| 1187 | return capture_flags & RTEMS_CAPTURE_GLOBAL_WATCH ? 1 : 0; |
---|
| 1188 | } |
---|
| 1189 | |
---|
| 1190 | /* |
---|
| 1191 | * rtems_capture_watch_ceiling |
---|
| 1192 | * |
---|
| 1193 | * DESCRIPTION: |
---|
| 1194 | * |
---|
| 1195 | * This function sets a watch ceiling. Tasks at or greating that the |
---|
| 1196 | * ceiling priority are not watched. This is a simple way to monitor |
---|
| 1197 | * an application and exclude system tasks running at a higher |
---|
| 1198 | * priority level. |
---|
| 1199 | */ |
---|
| 1200 | rtems_status_code |
---|
| 1201 | rtems_capture_watch_ceiling (rtems_task_priority ceiling) |
---|
| 1202 | { |
---|
| 1203 | capture_ceiling = ceiling; |
---|
| 1204 | return RTEMS_SUCCESSFUL; |
---|
| 1205 | } |
---|
| 1206 | |
---|
| 1207 | /* |
---|
| 1208 | * rtems_capture_watch_get_ceiling |
---|
| 1209 | * |
---|
| 1210 | * DESCRIPTION: |
---|
| 1211 | * |
---|
| 1212 | * This function gets the watch ceiling. |
---|
| 1213 | */ |
---|
| 1214 | rtems_task_priority |
---|
| 1215 | rtems_capture_watch_get_ceiling () |
---|
| 1216 | { |
---|
| 1217 | return capture_ceiling; |
---|
| 1218 | } |
---|
| 1219 | |
---|
| 1220 | /* |
---|
| 1221 | * rtems_capture_watch_floor |
---|
| 1222 | * |
---|
| 1223 | * DESCRIPTION: |
---|
| 1224 | * |
---|
| 1225 | * This function sets a watch floor. Tasks at or less that the |
---|
| 1226 | * floor priority are not watched. This is a simple way to monitor |
---|
| 1227 | * an application and exclude system tasks running at a lower |
---|
| 1228 | * priority level. |
---|
| 1229 | */ |
---|
| 1230 | rtems_status_code |
---|
| 1231 | rtems_capture_watch_floor (rtems_task_priority floor) |
---|
| 1232 | { |
---|
| 1233 | capture_floor = floor; |
---|
| 1234 | return RTEMS_SUCCESSFUL; |
---|
| 1235 | } |
---|
| 1236 | |
---|
| 1237 | /* |
---|
| 1238 | * rtems_capture_watch_get_floor |
---|
| 1239 | * |
---|
| 1240 | * DESCRIPTION: |
---|
| 1241 | * |
---|
| 1242 | * This function gets the watch floor. |
---|
| 1243 | */ |
---|
| 1244 | rtems_task_priority |
---|
| 1245 | rtems_capture_watch_get_floor () |
---|
| 1246 | { |
---|
| 1247 | return capture_floor; |
---|
| 1248 | } |
---|
| 1249 | |
---|
| 1250 | /* |
---|
| 1251 | * rtems_capture_set_trigger |
---|
| 1252 | * |
---|
| 1253 | * DESCRIPTION: |
---|
| 1254 | * |
---|
| 1255 | * This function sets an edge trigger. Left is the left side of |
---|
| 1256 | * the edge and right is right side of the edge. The trigger type |
---|
| 1257 | * can be - |
---|
| 1258 | * |
---|
| 1259 | * FROM_ANY : a switch from any task to the right side of the edge. |
---|
| 1260 | * TO_ANY : a switch from the left side of the edge to any task. |
---|
| 1261 | * FROM_TO : a switch from the left side of the edge to the right |
---|
| 1262 | * side of the edge. |
---|
| 1263 | * |
---|
| 1264 | * This set trigger routine will create a capture control for the |
---|
| 1265 | * target task. The task list is searched and any existing tasks |
---|
| 1266 | * are linked to the new control. |
---|
| 1267 | * |
---|
| 1268 | * We can have a number of tasks that have the same name so we |
---|
| 1269 | * search using names. This means a number of tasks can be |
---|
| 1270 | * linked to single control. |
---|
| 1271 | */ |
---|
| 1272 | rtems_status_code |
---|
| 1273 | rtems_capture_set_trigger (rtems_name from, |
---|
| 1274 | rtems_id from_id, |
---|
| 1275 | rtems_name to, |
---|
| 1276 | rtems_id to_id, |
---|
| 1277 | rtems_capture_trigger_t trigger) |
---|
| 1278 | { |
---|
| 1279 | rtems_capture_control_t* control; |
---|
| 1280 | int i; |
---|
[aed742c] | 1281 | |
---|
[a923a82] | 1282 | /* |
---|
| 1283 | * Find the capture control blocks for the from and to |
---|
| 1284 | * tasks. |
---|
| 1285 | */ |
---|
| 1286 | if (trigger == rtems_capture_to_any) |
---|
| 1287 | { |
---|
| 1288 | control = rtems_capture_create_control (from, from_id); |
---|
| 1289 | if (control == NULL) |
---|
| 1290 | return RTEMS_NO_MEMORY; |
---|
| 1291 | control->flags |= RTEMS_CAPTURE_TO_ANY; |
---|
| 1292 | } |
---|
| 1293 | |
---|
| 1294 | if ((trigger == rtems_capture_from_to) || |
---|
| 1295 | (trigger == rtems_capture_from_any)) |
---|
| 1296 | { |
---|
| 1297 | control = rtems_capture_create_control (to, to_id); |
---|
| 1298 | if (control == NULL) |
---|
| 1299 | return RTEMS_NO_MEMORY; |
---|
[aed742c] | 1300 | |
---|
[a923a82] | 1301 | if (trigger == rtems_capture_from_any) |
---|
| 1302 | control->flags |= RTEMS_CAPTURE_FROM_ANY; |
---|
| 1303 | else |
---|
| 1304 | { |
---|
| 1305 | control->flags |= RTEMS_CAPTURE_FROM_TO; |
---|
| 1306 | for (i = 0; i < RTEMS_CAPTURE_TRIGGER_TASKS; i++) |
---|
| 1307 | { |
---|
| 1308 | if (control->from[i] == 0) |
---|
| 1309 | { |
---|
| 1310 | control->from[i] = from; |
---|
| 1311 | control->from_id[i] = from_id; |
---|
| 1312 | break; |
---|
| 1313 | } |
---|
| 1314 | } |
---|
| 1315 | } |
---|
| 1316 | } |
---|
| 1317 | return RTEMS_SUCCESSFUL; |
---|
| 1318 | } |
---|
| 1319 | |
---|
| 1320 | /* |
---|
| 1321 | * rtems_capture_read |
---|
| 1322 | * |
---|
| 1323 | * DESCRIPTION: |
---|
| 1324 | * |
---|
| 1325 | * This function reads a number of records from the capture buffer. |
---|
| 1326 | * The user can optionally block and wait until the buffer as a |
---|
| 1327 | * specific number of records available or a specific time has |
---|
| 1328 | * elasped. |
---|
| 1329 | * |
---|
| 1330 | * The function returns the number of record that is has that are |
---|
| 1331 | * in a continous block of memory. If the number of available records |
---|
| 1332 | * wrap then only those records are provided. This removes the need for |
---|
| 1333 | * caller to be concerned about buffer wrappings. If the number of |
---|
| 1334 | * requested records cannot be met due to the wrapping of the records |
---|
| 1335 | * less than the specified number will be returned. |
---|
| 1336 | * |
---|
| 1337 | * The user must release the records. This is achieved with a call to |
---|
| 1338 | * rtems_capture_release. Calls this function without a release will |
---|
| 1339 | * result in at least the same number of records being released. |
---|
| 1340 | * |
---|
| 1341 | * The 'threshold' parameter is the number of records that must be |
---|
| 1342 | * captured before returning. If a timeout period is specified (non-0) |
---|
| 1343 | * any captured records will be returned. These parameters stop |
---|
| 1344 | * thrashing occuring for a small number of records, yet allows |
---|
| 1345 | * a user configured latiency to be applied for single events. |
---|
| 1346 | * |
---|
| 1347 | * The 'timeout' parameter is in micro-seconds. A value of 0 will disable |
---|
| 1348 | * the timeout. |
---|
| 1349 | * |
---|
| 1350 | */ |
---|
| 1351 | rtems_status_code |
---|
[3e08d4e] | 1352 | rtems_capture_read (uint32_t threshold, |
---|
| 1353 | uint32_t timeout, |
---|
| 1354 | uint32_t * read, |
---|
[a923a82] | 1355 | rtems_capture_record_t** recs) |
---|
| 1356 | { |
---|
| 1357 | rtems_interrupt_level level; |
---|
| 1358 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
[3e08d4e] | 1359 | uint32_t count; |
---|
[a923a82] | 1360 | |
---|
| 1361 | *read = 0; |
---|
| 1362 | *recs = NULL; |
---|
| 1363 | |
---|
| 1364 | rtems_interrupt_disable (level); |
---|
| 1365 | |
---|
| 1366 | /* |
---|
| 1367 | * Only one reader is allowed. |
---|
| 1368 | */ |
---|
| 1369 | |
---|
| 1370 | if (capture_flags & RTEMS_CAPTURE_READER_ACTIVE) |
---|
| 1371 | { |
---|
| 1372 | rtems_interrupt_enable (level); |
---|
| 1373 | return RTEMS_RESOURCE_IN_USE; |
---|
| 1374 | } |
---|
| 1375 | |
---|
| 1376 | capture_flags |= RTEMS_CAPTURE_READER_ACTIVE; |
---|
| 1377 | *read = count = capture_count; |
---|
| 1378 | |
---|
| 1379 | rtems_interrupt_enable (level); |
---|
| 1380 | |
---|
| 1381 | *recs = &capture_records[capture_out]; |
---|
| 1382 | |
---|
| 1383 | for (;;) |
---|
| 1384 | { |
---|
| 1385 | /* |
---|
| 1386 | * See if the count wraps the end of the record buffer. |
---|
| 1387 | */ |
---|
| 1388 | if (count && ((capture_out + count) >= capture_size)) |
---|
| 1389 | *read = capture_size - capture_out; |
---|
[aed742c] | 1390 | |
---|
[a923a82] | 1391 | /* |
---|
[aed742c] | 1392 | * Do we have a threshold and the current count has not wrapped |
---|
| 1393 | * around the end of the capture record buffer ? |
---|
[a923a82] | 1394 | */ |
---|
| 1395 | if ((*read == count) && threshold) |
---|
| 1396 | { |
---|
| 1397 | /* |
---|
| 1398 | * Do we have enough records ? |
---|
| 1399 | */ |
---|
| 1400 | if (*read < threshold) |
---|
| 1401 | { |
---|
| 1402 | rtems_event_set event_out; |
---|
| 1403 | |
---|
| 1404 | rtems_task_ident (RTEMS_SELF, RTEMS_LOCAL, &capture_reader); |
---|
| 1405 | |
---|
| 1406 | rtems_interrupt_disable (level); |
---|
[aed742c] | 1407 | |
---|
[a923a82] | 1408 | capture_flags |= RTEMS_CAPTURE_READER_WAITING; |
---|
| 1409 | |
---|
| 1410 | rtems_interrupt_enable (level); |
---|
[aed742c] | 1411 | |
---|
[a923a82] | 1412 | sc = rtems_event_receive (RTEMS_EVENT_0, |
---|
| 1413 | RTEMS_WAIT | RTEMS_EVENT_ANY, |
---|
| 1414 | TOD_MICROSECONDS_TO_TICKS (timeout), |
---|
| 1415 | &event_out); |
---|
| 1416 | |
---|
| 1417 | /* |
---|
| 1418 | * Let the user handle all other sorts of errors. This may |
---|
| 1419 | * not be the best solution, but oh well, it will do for |
---|
| 1420 | * now. |
---|
| 1421 | */ |
---|
| 1422 | if ((sc != RTEMS_SUCCESSFUL) && (sc != RTEMS_TIMEOUT)) |
---|
| 1423 | break; |
---|
| 1424 | |
---|
| 1425 | rtems_interrupt_disable (level); |
---|
| 1426 | |
---|
| 1427 | *read = count = capture_count; |
---|
| 1428 | |
---|
| 1429 | rtems_interrupt_enable (level); |
---|
| 1430 | |
---|
| 1431 | continue; |
---|
| 1432 | } |
---|
| 1433 | } |
---|
| 1434 | |
---|
| 1435 | /* |
---|
| 1436 | * Always out if we reach here. To loop use continue. |
---|
| 1437 | */ |
---|
| 1438 | break; |
---|
| 1439 | } |
---|
| 1440 | |
---|
| 1441 | rtems_interrupt_disable (level); |
---|
| 1442 | |
---|
| 1443 | capture_flags &= ~RTEMS_CAPTURE_READER_ACTIVE; |
---|
| 1444 | |
---|
| 1445 | rtems_interrupt_enable (level); |
---|
| 1446 | |
---|
| 1447 | return sc; |
---|
| 1448 | } |
---|
| 1449 | |
---|
| 1450 | /* |
---|
| 1451 | * rtems_capture_release |
---|
| 1452 | * |
---|
| 1453 | * DESCRIPTION: |
---|
| 1454 | * |
---|
| 1455 | * This function releases the requested number of record slots back |
---|
| 1456 | * to the capture engine. The count must match the number read. |
---|
| 1457 | */ |
---|
| 1458 | rtems_status_code |
---|
[3e08d4e] | 1459 | rtems_capture_release (uint32_t count) |
---|
[a923a82] | 1460 | { |
---|
| 1461 | rtems_interrupt_level level; |
---|
| 1462 | |
---|
| 1463 | rtems_interrupt_disable (level); |
---|
| 1464 | |
---|
| 1465 | if (count > capture_count) |
---|
| 1466 | count = capture_count; |
---|
| 1467 | |
---|
| 1468 | capture_count -= count; |
---|
| 1469 | |
---|
| 1470 | capture_out = (capture_count + count) % capture_size; |
---|
| 1471 | |
---|
| 1472 | rtems_interrupt_enable (level); |
---|
| 1473 | |
---|
| 1474 | return RTEMS_SUCCESSFUL; |
---|
| 1475 | } |
---|
| 1476 | |
---|
| 1477 | /* |
---|
| 1478 | * rtems_capture_tick_time |
---|
| 1479 | * |
---|
| 1480 | * DESCRIPTION: |
---|
| 1481 | * |
---|
| 1482 | * This function returns the tick period in nano-seconds. |
---|
| 1483 | */ |
---|
[aed742c] | 1484 | uint32_t |
---|
[a923a82] | 1485 | rtems_capture_tick_time () |
---|
| 1486 | { |
---|
| 1487 | return capture_tick_period; |
---|
| 1488 | } |
---|
| 1489 | |
---|
| 1490 | /* |
---|
| 1491 | * rtems_capture_event_text |
---|
| 1492 | * |
---|
| 1493 | * DESCRIPTION: |
---|
| 1494 | * |
---|
| 1495 | * This function returns a string for an event based on the bit in the |
---|
| 1496 | * event. The functions takes the bit offset as a number not the bit |
---|
| 1497 | * set in a bit map. |
---|
| 1498 | */ |
---|
| 1499 | const char* |
---|
| 1500 | rtems_capture_event_text (int event) |
---|
| 1501 | { |
---|
| 1502 | if ((event < RTEMS_CAPTURE_EVENT_START) || (event > RTEMS_CAPTURE_EVENT_END)) |
---|
| 1503 | return "invalid event id"; |
---|
| 1504 | return capture_event_text[event - RTEMS_CAPTURE_EVENT_START]; |
---|
| 1505 | } |
---|
| 1506 | |
---|
| 1507 | /* |
---|
| 1508 | * rtems_capture_get_task_list |
---|
| 1509 | * |
---|
| 1510 | * DESCRIPTION: |
---|
| 1511 | * |
---|
| 1512 | * This function returns the head of the list of tasks that the |
---|
| 1513 | * capture engine has detected. |
---|
| 1514 | */ |
---|
| 1515 | rtems_capture_task_t* |
---|
| 1516 | rtems_capture_get_task_list () |
---|
| 1517 | { |
---|
| 1518 | return capture_tasks; |
---|
| 1519 | } |
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| 1520 | |
---|
| 1521 | /* |
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| 1522 | * rtems_capture_task_stack_usage |
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| 1523 | * |
---|
| 1524 | * DESCRIPTION: |
---|
| 1525 | * |
---|
| 1526 | * This function updates the stack usage. The task control block |
---|
| 1527 | * is updated. |
---|
| 1528 | */ |
---|
[aed742c] | 1529 | uint32_t |
---|
[a923a82] | 1530 | rtems_capture_task_stack_usage (rtems_capture_task_t* task) |
---|
| 1531 | { |
---|
| 1532 | if (task->tcb) |
---|
| 1533 | { |
---|
[3e08d4e] | 1534 | uint32_t * st; |
---|
| 1535 | uint32_t * s; |
---|
[a923a82] | 1536 | |
---|
| 1537 | /* |
---|
| 1538 | * @todo: Assumes all stacks move the same way. |
---|
| 1539 | */ |
---|
| 1540 | st = task->tcb->Start.Initial_stack.area + task->stack_size; |
---|
| 1541 | s = task->tcb->Start.Initial_stack.area; |
---|
| 1542 | |
---|
| 1543 | while (s < st) |
---|
| 1544 | { |
---|
| 1545 | if (*s != 0xdeaddead) |
---|
| 1546 | break; |
---|
| 1547 | s++; |
---|
| 1548 | } |
---|
| 1549 | |
---|
| 1550 | task->stack_clean = |
---|
[3e08d4e] | 1551 | s - (uint32_t *) task->tcb->Start.Initial_stack.area; |
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[a923a82] | 1552 | } |
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| 1553 | |
---|
| 1554 | return task->stack_clean; |
---|
| 1555 | } |
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| 1556 | |
---|
| 1557 | /* |
---|
| 1558 | * rtems_capture_get_control_list |
---|
| 1559 | * |
---|
| 1560 | * DESCRIPTION: |
---|
| 1561 | * |
---|
| 1562 | * This function returns the head of the list of control in the |
---|
| 1563 | * capture engine. |
---|
| 1564 | */ |
---|
| 1565 | rtems_capture_control_t* |
---|
| 1566 | rtems_capture_get_control_list () |
---|
| 1567 | { |
---|
| 1568 | return capture_controls; |
---|
| 1569 | } |
---|