[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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[6c06288] | 10 | COPYRIGHT (c) 1989-2008. |
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[a923a82] | 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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[1374fd3] | 41 | * |
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| 42 | * This feature has been disabled as it becomes confusing when |
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| 43 | * setting up filters and some event leak. |
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[a923a82] | 44 | */ |
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[1374fd3] | 45 | #if defined (RTEMS_CAPTURE_ENGINE_ALLOW_RELATED_EVENTS) |
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[a923a82] | 46 | #define RTEMS_CAPTURE_RECORD_EVENTS (RTEMS_CAPTURE_CREATED_BY_EVENT | \ |
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| 47 | RTEMS_CAPTURE_CREATED_EVENT | \ |
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| 48 | RTEMS_CAPTURE_STARTED_BY_EVENT | \ |
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| 49 | RTEMS_CAPTURE_STARTED_EVENT | \ |
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| 50 | RTEMS_CAPTURE_RESTARTED_BY_EVENT | \ |
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| 51 | RTEMS_CAPTURE_RESTARTED_EVENT | \ |
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| 52 | RTEMS_CAPTURE_DELETED_BY_EVENT | \ |
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| 53 | RTEMS_CAPTURE_DELETED_EVENT | \ |
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| 54 | RTEMS_CAPTURE_BEGIN_EVENT | \ |
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| 55 | RTEMS_CAPTURE_EXITTED_EVENT) |
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[1374fd3] | 56 | #else |
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| 57 | #define RTEMS_CAPTURE_RECORD_EVENTS (0) |
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| 58 | #endif |
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[a923a82] | 59 | |
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| 60 | /* |
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| 61 | * Global capture flags. |
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| 62 | */ |
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| 63 | #define RTEMS_CAPTURE_ON (1 << 0) |
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| 64 | #define RTEMS_CAPTURE_NO_MEMORY (1 << 1) |
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| 65 | #define RTEMS_CAPTURE_OVERFLOW (1 << 2) |
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| 66 | #define RTEMS_CAPTURE_TRIGGERED (1 << 3) |
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| 67 | #define RTEMS_CAPTURE_READER_ACTIVE (1 << 4) |
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| 68 | #define RTEMS_CAPTURE_READER_WAITING (1 << 5) |
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| 69 | #define RTEMS_CAPTURE_GLOBAL_WATCH (1 << 6) |
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[1374fd3] | 70 | #define RTEMS_CAPTURE_ONLY_MONITOR (1 << 7) |
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[a923a82] | 71 | |
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| 72 | /* |
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| 73 | * RTEMS Capture Data. |
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| 74 | */ |
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| 75 | static rtems_capture_record_t* capture_records; |
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[1374fd3] | 76 | static uint32_t capture_size; |
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| 77 | static uint32_t capture_count; |
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[a923a82] | 78 | static rtems_capture_record_t* capture_in; |
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[1374fd3] | 79 | static uint32_t capture_out; |
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| 80 | static uint32_t capture_flags; |
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[a923a82] | 81 | static rtems_capture_task_t* capture_tasks; |
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| 82 | static rtems_capture_control_t* capture_controls; |
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| 83 | static int capture_extension_index; |
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| 84 | static rtems_id capture_id; |
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| 85 | static rtems_capture_timestamp capture_timestamp; |
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| 86 | static rtems_task_priority capture_ceiling; |
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| 87 | static rtems_task_priority capture_floor; |
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[1374fd3] | 88 | static uint32_t capture_tick_period; |
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[a923a82] | 89 | static rtems_id capture_reader; |
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| 90 | |
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| 91 | /* |
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| 92 | * RTEMS Event text. |
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| 93 | */ |
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| 94 | static const char* capture_event_text[] = |
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| 95 | { |
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| 96 | "CREATED_BY", |
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| 97 | "CREATED", |
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| 98 | "STARTED_BY", |
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| 99 | "STARTED", |
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| 100 | "RESTARTED_BY", |
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| 101 | "RESTARTED", |
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| 102 | "DELETED_BY", |
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| 103 | "DELETED", |
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| 104 | "BEGIN", |
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| 105 | "EXITTED", |
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| 106 | "SWITCHED_OUT", |
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| 107 | "SWITCHED_IN", |
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| 108 | "TIMESTAMP" |
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| 109 | }; |
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| 110 | |
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| 111 | /* |
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| 112 | * rtems_capture_get_time |
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| 113 | * |
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| 114 | * DESCRIPTION: |
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| 115 | * |
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| 116 | * This function returns the current time. If a handler is provided |
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| 117 | * by the user get the time from that. |
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| 118 | */ |
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[1374fd3] | 119 | static inline void rtems_capture_get_time (uint32_t* ticks, |
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| 120 | uint32_t* tick_offset) |
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[a923a82] | 121 | { |
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| 122 | if (capture_timestamp) |
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| 123 | capture_timestamp (ticks, tick_offset); |
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| 124 | else |
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| 125 | { |
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| 126 | *ticks = _Watchdog_Ticks_since_boot; |
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| 127 | *tick_offset = 0; |
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| 128 | } |
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| 129 | } |
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| 130 | |
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| 131 | /* |
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| 132 | * rtems_capture_match_names |
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| 133 | * |
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| 134 | * DESCRIPTION: |
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| 135 | * |
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| 136 | * This function compares rtems_names. It protects the |
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| 137 | * capture engine from a change to the way names are supported |
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| 138 | * in RTEMS. |
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| 139 | * |
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| 140 | */ |
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[1167235] | 141 | static inline bool |
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[a923a82] | 142 | rtems_capture_match_names (rtems_name lhs, rtems_name rhs) |
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| 143 | { |
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| 144 | return lhs == rhs; |
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| 145 | } |
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| 146 | |
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[1374fd3] | 147 | /* |
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| 148 | * rtems_capture_match_id |
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| 149 | * |
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| 150 | * DESCRIPTION: |
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| 151 | * |
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| 152 | * This function compares rtems_ids. It protects the |
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| 153 | * capture engine from a change to the way id are supported |
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| 154 | * in RTEMS. |
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| 155 | * |
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| 156 | */ |
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[1167235] | 157 | static inline bool |
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[1374fd3] | 158 | rtems_capture_match_ids (rtems_id lhs, rtems_id rhs) |
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| 159 | { |
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| 160 | return lhs == rhs; |
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| 161 | } |
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| 162 | |
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| 163 | /* |
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| 164 | * rtems_capture_match_name_id |
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| 165 | * |
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| 166 | * DESCRIPTION: |
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| 167 | * |
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| 168 | * This function matches a name and/or id. |
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| 169 | */ |
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[1167235] | 170 | static inline bool |
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[1374fd3] | 171 | rtems_capture_match_name_id (rtems_name lhs_name, |
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| 172 | rtems_id lhs_id, |
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| 173 | rtems_name rhs_name, |
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| 174 | rtems_id rhs_id) |
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| 175 | { |
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| 176 | /* |
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| 177 | * The left hand side name or id could be 0 which means a wildcard. |
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| 178 | */ |
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| 179 | if ((lhs_name == 0) && (lhs_id == rhs_id)) |
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| 180 | return 1; |
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| 181 | else if ((lhs_id == 0) || (lhs_id == rhs_id)) |
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| 182 | { |
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| 183 | if (rtems_capture_match_names (lhs_name, rhs_name)) |
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| 184 | return 1; |
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| 185 | } |
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| 186 | return 0; |
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| 187 | } |
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| 188 | |
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[a923a82] | 189 | /* |
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| 190 | * rtems_capture_dup_name |
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| 191 | * |
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| 192 | * DESCRIPTION: |
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| 193 | * |
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| 194 | * This function duplicates an rtems_names. It protects the |
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[08885d63] | 195 | * capture engine from a change to the way names are supported |
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[a923a82] | 196 | * in RTEMS. |
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| 197 | * |
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| 198 | */ |
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| 199 | static inline void |
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| 200 | rtems_capture_dup_name (rtems_name* dst, rtems_name src) |
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| 201 | { |
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| 202 | *dst = src; |
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| 203 | } |
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| 204 | |
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| 205 | /* |
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[1374fd3] | 206 | * rtems_capture_by_in_to |
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[a923a82] | 207 | * |
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| 208 | * DESCRIPTION: |
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| 209 | * |
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[1374fd3] | 210 | * This function sees if a BY control is in the BY names. The use |
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| 211 | * of the valid_mask in this way assumes the number of trigger |
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| 212 | * tasks is the number of bits in uint32_t. |
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[a923a82] | 213 | * |
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| 214 | */ |
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[1167235] | 215 | static inline bool |
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[1374fd3] | 216 | rtems_capture_by_in_to (uint32_t events, |
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| 217 | rtems_capture_task_t* by, |
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| 218 | rtems_capture_control_t* to) |
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[a923a82] | 219 | { |
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[1374fd3] | 220 | uint32_t valid_mask = RTEMS_CAPTURE_CONTROL_FROM_MASK (0); |
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| 221 | uint32_t valid_remainder = 0xffffffff; |
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| 222 | int i; |
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| 223 | |
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| 224 | for (i = 0; i < RTEMS_CAPTURE_TRIGGER_TASKS; i++) |
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[a923a82] | 225 | { |
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[1374fd3] | 226 | /* |
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| 227 | * If there are no more valid BY entries then |
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| 228 | * we are finished. |
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| 229 | */ |
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| 230 | if ((valid_remainder & to->by_valid) == 0) |
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| 231 | break; |
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| 232 | |
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| 233 | /* |
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| 234 | * Is the froby entry valid and does its name or id match. |
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| 235 | */ |
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| 236 | if ((valid_mask & to->by_valid) && |
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| 237 | (to->by[i].trigger & events)) |
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| 238 | { |
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| 239 | /* |
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| 240 | * We have the BY task on the right hand side so we |
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| 241 | * match with id's first then labels if the id's are |
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| 242 | * not set. |
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| 243 | */ |
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| 244 | if (rtems_capture_match_name_id (to->by[i].name, to->by[i].id, |
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| 245 | by->name, by->id)) |
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[a923a82] | 246 | return 1; |
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[1374fd3] | 247 | } |
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| 248 | |
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| 249 | valid_mask >>= 1; |
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| 250 | valid_remainder >>= 1; |
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[a923a82] | 251 | } |
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[1374fd3] | 252 | |
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[a923a82] | 253 | return 0; |
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| 254 | } |
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| 255 | |
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| 256 | /* |
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[1374fd3] | 257 | * rtems_capture_refcount_up |
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[a923a82] | 258 | * |
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| 259 | * DESCRIPTION: |
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| 260 | * |
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[1374fd3] | 261 | * This function raises the reference count. |
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| 262 | * |
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[a923a82] | 263 | */ |
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[1374fd3] | 264 | static inline void |
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| 265 | rtems_capture_refcount_up (rtems_capture_task_t* task) |
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[a923a82] | 266 | { |
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[1374fd3] | 267 | task->refcount++; |
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| 268 | } |
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| 269 | |
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| 270 | /* |
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| 271 | * rtems_capture_refcount_down |
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| 272 | * |
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| 273 | * DESCRIPTION: |
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| 274 | * |
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| 275 | * This function lowers the reference count and if the count |
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| 276 | * reaches 0 the task control block is returned to the heap. |
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| 277 | * |
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| 278 | */ |
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| 279 | static inline void |
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| 280 | rtems_capture_refcount_down (rtems_capture_task_t* task) |
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| 281 | { |
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| 282 | if (task->refcount) |
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| 283 | task->refcount--; |
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[a923a82] | 284 | } |
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| 285 | |
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| 286 | /* |
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| 287 | * rtems_capture_init_stack_usage |
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| 288 | * |
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| 289 | * DESCRIPTION: |
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| 290 | * |
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| 291 | * This function setups a stack so its usage can be monitored. |
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| 292 | */ |
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| 293 | static inline void |
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| 294 | rtems_capture_init_stack_usage (rtems_capture_task_t* task) |
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| 295 | { |
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| 296 | if (task->tcb) |
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| 297 | { |
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[1374fd3] | 298 | uint32_t* s; |
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| 299 | uint32_t i; |
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[a923a82] | 300 | |
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| 301 | task->stack_size = task->tcb->Start.Initial_stack.size; |
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| 302 | task->stack_clean = task->stack_size; |
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| 303 | |
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| 304 | s = task->tcb->Start.Initial_stack.area; |
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| 305 | |
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| 306 | for (i = 0; i < (task->stack_size - 128); i += 4) |
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| 307 | *(s++) = 0xdeaddead; |
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| 308 | } |
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| 309 | } |
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| 310 | |
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| 311 | /* |
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| 312 | * rtems_capture_find_control |
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| 313 | * |
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| 314 | * DESCRIPTION: |
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| 315 | * |
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| 316 | * This function searches for a trigger given a name. |
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| 317 | * |
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| 318 | */ |
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| 319 | static inline rtems_capture_control_t* |
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| 320 | rtems_capture_find_control (rtems_name name, rtems_id id) |
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| 321 | { |
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| 322 | rtems_capture_control_t* control; |
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[aed742c] | 323 | |
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[a923a82] | 324 | for (control = capture_controls; control != NULL; control = control->next) |
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| 325 | if (rtems_capture_match_name_id (name, id, control->name, control->id)) |
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| 326 | break; |
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| 327 | return control; |
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| 328 | } |
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| 329 | |
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| 330 | /* |
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| 331 | * rtems_capture_create_control |
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| 332 | * |
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| 333 | * DESCRIPTION: |
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| 334 | * |
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| 335 | * This function creates a capture control for the capture engine. |
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| 336 | * |
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| 337 | */ |
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| 338 | static inline rtems_capture_control_t* |
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| 339 | rtems_capture_create_control (rtems_name name, rtems_id id) |
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| 340 | { |
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| 341 | rtems_interrupt_level level; |
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| 342 | rtems_capture_control_t* control; |
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| 343 | rtems_capture_task_t* task; |
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| 344 | |
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| 345 | if ((name == 0) && (id == 0)) |
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| 346 | return NULL; |
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| 347 | |
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| 348 | control = rtems_capture_find_control (name, id); |
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[aed742c] | 349 | |
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[a923a82] | 350 | if (control == NULL) |
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| 351 | { |
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| 352 | control = _Workspace_Allocate (sizeof (rtems_capture_control_t)); |
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| 353 | |
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| 354 | if (control == NULL) |
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| 355 | { |
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| 356 | capture_flags |= RTEMS_CAPTURE_NO_MEMORY; |
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| 357 | return NULL; |
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| 358 | } |
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[aed742c] | 359 | |
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[1374fd3] | 360 | control->name = name; |
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| 361 | control->id = id; |
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| 362 | control->flags = 0; |
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| 363 | control->to_triggers = 0; |
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| 364 | control->from_triggers = 0; |
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| 365 | control->by_valid = 0; |
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[a923a82] | 366 | |
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[1374fd3] | 367 | memset (control->by, 0, sizeof (control->by)); |
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[aed742c] | 368 | |
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[a923a82] | 369 | rtems_interrupt_disable (level); |
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| 370 | |
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| 371 | control->next = capture_controls; |
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| 372 | capture_controls = control; |
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| 373 | |
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| 374 | /* |
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| 375 | * We need to scan the task list as set the control to the |
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| 376 | * tasks. |
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| 377 | */ |
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[32293d69] | 378 | for (task = capture_tasks; task != NULL; task = task->forw) |
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[a923a82] | 379 | if (rtems_capture_match_name_id (name, id, task->name, task->id)) |
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| 380 | task->control = control; |
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| 381 | |
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| 382 | rtems_interrupt_enable (level); |
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| 383 | } |
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| 384 | |
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| 385 | return control; |
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| 386 | } |
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| 387 | |
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| 388 | /* |
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| 389 | * rtems_capture_create_capture_task |
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| 390 | * |
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| 391 | * DESCRIPTION: |
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| 392 | * |
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| 393 | * This function create the task control. |
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| 394 | * |
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| 395 | */ |
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| 396 | static inline rtems_capture_task_t* |
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| 397 | rtems_capture_create_capture_task (rtems_tcb* new_task) |
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| 398 | { |
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| 399 | rtems_interrupt_level level; |
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| 400 | rtems_capture_task_t* task; |
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| 401 | rtems_capture_control_t* control; |
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[1374fd3] | 402 | rtems_name name; |
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| 403 | |
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[a923a82] | 404 | task = _Workspace_Allocate (sizeof (rtems_capture_task_t)); |
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| 405 | |
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| 406 | if (task == NULL) |
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| 407 | { |
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| 408 | capture_flags |= RTEMS_CAPTURE_NO_MEMORY; |
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| 409 | return NULL; |
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| 410 | } |
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| 411 | |
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[1374fd3] | 412 | /* |
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| 413 | * Check the type of name the object has. |
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| 414 | */ |
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[ce19f1fa] | 415 | |
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| 416 | name = 0; |
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| 417 | if ( _Objects_Get_API (new_task->Object.id) == OBJECTS_CLASSIC_API ) |
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| 418 | name = new_task->Object.name.name_u32; |
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| 419 | else if (new_task->Object.name.name_p) |
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| 420 | name = rtems_build_name (new_task->Object.name.name_p[0], |
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| 421 | new_task->Object.name.name_p[1], |
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| 422 | new_task->Object.name.name_p[2], |
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| 423 | new_task->Object.name.name_p[3]); |
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[1374fd3] | 424 | |
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| 425 | rtems_capture_dup_name (&task->name, name); |
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| 426 | |
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[a923a82] | 427 | task->id = new_task->Object.id; |
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| 428 | task->flags = 0; |
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| 429 | task->in = 0; |
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[1374fd3] | 430 | task->refcount = 0; |
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[a923a82] | 431 | task->out = 0; |
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| 432 | task->tcb = new_task; |
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| 433 | task->ticks = 0; |
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| 434 | task->tick_offset = 0; |
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| 435 | task->ticks_in = 0; |
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| 436 | task->tick_offset_in = 0; |
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| 437 | task->control = 0; |
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| 438 | task->last_ticks = 0; |
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| 439 | task->last_tick_offset = 0; |
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| 440 | |
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| 441 | task->tcb->extensions[capture_extension_index] = task; |
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| 442 | |
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| 443 | task->start_priority = new_task->Start.initial_priority; |
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| 444 | task->stack_size = new_task->Start.Initial_stack.size; |
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| 445 | task->stack_clean = task->stack_size; |
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| 446 | |
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| 447 | rtems_interrupt_disable (level); |
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| 448 | |
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[32293d69] | 449 | task->forw = capture_tasks; |
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| 450 | if (task->forw) |
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| 451 | task->forw->back = task; |
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| 452 | task->back = NULL; |
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[a923a82] | 453 | capture_tasks = task; |
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| 454 | |
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| 455 | rtems_interrupt_enable (level); |
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| 456 | |
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| 457 | /* |
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| 458 | * We need to scan the default control list to initialise |
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| 459 | * this control. |
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| 460 | */ |
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| 461 | |
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| 462 | for (control = capture_controls; control != NULL; control = control->next) |
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| 463 | if (rtems_capture_match_name_id (control->name, control->id, |
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| 464 | task->name, task->id)) |
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| 465 | task->control = control; |
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[aed742c] | 466 | |
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[a923a82] | 467 | return task; |
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| 468 | } |
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| 469 | |
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[1374fd3] | 470 | /* |
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| 471 | * rtems_capture_destroy_capture_task |
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| 472 | * |
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| 473 | * DESCRIPTION: |
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| 474 | * |
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| 475 | * This function destroy the task structure if the reference count |
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| 476 | * is 0 and the tcb has been cleared signalling the task has been |
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| 477 | * deleted. |
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| 478 | * |
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| 479 | */ |
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| 480 | static inline void |
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| 481 | rtems_capture_destroy_capture_task (rtems_capture_task_t* task) |
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| 482 | { |
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| 483 | if (task) |
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| 484 | { |
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| 485 | rtems_interrupt_level level; |
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| 486 | |
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| 487 | rtems_interrupt_disable (level); |
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| 488 | |
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| 489 | if (task->tcb || task->refcount) |
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| 490 | task = 0; |
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| 491 | |
---|
| 492 | if (task) |
---|
| 493 | { |
---|
| 494 | if (task->forw) |
---|
| 495 | task->forw->back = task->back; |
---|
| 496 | if (task->back) |
---|
| 497 | task->back->forw = task->forw; |
---|
| 498 | else |
---|
| 499 | capture_tasks = task->forw; |
---|
| 500 | } |
---|
| 501 | |
---|
| 502 | rtems_interrupt_enable (level); |
---|
| 503 | |
---|
| 504 | if (task) |
---|
| 505 | _Workspace_Free (task); |
---|
| 506 | } |
---|
| 507 | } |
---|
| 508 | |
---|
[a923a82] | 509 | /* |
---|
| 510 | * rtems_capture_record |
---|
| 511 | * |
---|
| 512 | * DESCRIPTION: |
---|
| 513 | * |
---|
| 514 | * This function records a capture record into the capture buffer. |
---|
| 515 | * |
---|
| 516 | */ |
---|
| 517 | static inline void |
---|
| 518 | rtems_capture_record (rtems_capture_task_t* task, |
---|
[1374fd3] | 519 | uint32_t events) |
---|
[a923a82] | 520 | { |
---|
| 521 | /* |
---|
| 522 | * Check the watch state if we have a task control, and |
---|
| 523 | * the task's real priority is lower or equal to the ceiling. |
---|
| 524 | */ |
---|
[1374fd3] | 525 | if (task && |
---|
| 526 | ((capture_flags & |
---|
| 527 | (RTEMS_CAPTURE_TRIGGERED | RTEMS_CAPTURE_ONLY_MONITOR)) == |
---|
| 528 | RTEMS_CAPTURE_TRIGGERED)) |
---|
[a923a82] | 529 | { |
---|
| 530 | rtems_capture_control_t* control; |
---|
| 531 | |
---|
| 532 | control = task->control; |
---|
| 533 | |
---|
| 534 | /* |
---|
| 535 | * Capure the record if we have an event that is always |
---|
| 536 | * captured, or the task's real priority is greater than the |
---|
| 537 | * watch ceiling, and the global watch or task watch is enabled. |
---|
| 538 | */ |
---|
| 539 | |
---|
| 540 | if ((events & RTEMS_CAPTURE_RECORD_EVENTS) || |
---|
| 541 | ((task->tcb->real_priority >= capture_ceiling) && |
---|
| 542 | (task->tcb->real_priority <= capture_floor) && |
---|
| 543 | ((capture_flags & RTEMS_CAPTURE_GLOBAL_WATCH) || |
---|
| 544 | (control && (control->flags & RTEMS_CAPTURE_WATCH))))) |
---|
| 545 | { |
---|
| 546 | rtems_interrupt_level level; |
---|
[aed742c] | 547 | |
---|
[a923a82] | 548 | rtems_interrupt_disable (level); |
---|
[aed742c] | 549 | |
---|
[a923a82] | 550 | if (capture_count < capture_size) |
---|
| 551 | { |
---|
| 552 | capture_count++; |
---|
| 553 | capture_in->task = task; |
---|
| 554 | capture_in->events = (events | |
---|
| 555 | (task->tcb->real_priority) | |
---|
| 556 | (task->tcb->current_priority << 8)); |
---|
| 557 | |
---|
| 558 | if ((events & RTEMS_CAPTURE_RECORD_EVENTS) == 0) |
---|
| 559 | task->flags |= RTEMS_CAPTURE_TRACED; |
---|
| 560 | |
---|
| 561 | rtems_capture_get_time (&capture_in->ticks, &capture_in->tick_offset); |
---|
| 562 | |
---|
| 563 | if (capture_in == &capture_records[capture_size - 1]) |
---|
| 564 | capture_in = capture_records; |
---|
| 565 | else |
---|
[aed742c] | 566 | capture_in++; |
---|
[1374fd3] | 567 | |
---|
| 568 | rtems_capture_refcount_up (task); |
---|
[a923a82] | 569 | } |
---|
| 570 | else |
---|
| 571 | capture_flags |= RTEMS_CAPTURE_OVERFLOW; |
---|
| 572 | rtems_interrupt_enable (level); |
---|
| 573 | } |
---|
| 574 | } |
---|
| 575 | } |
---|
| 576 | |
---|
[1374fd3] | 577 | /* |
---|
| 578 | * rtems_capture_trigger |
---|
| 579 | * |
---|
| 580 | * DESCRIPTION: |
---|
| 581 | * |
---|
| 582 | * See if we have triggered and if not see if this event is a |
---|
| 583 | * cause of a trigger. |
---|
| 584 | */ |
---|
[1167235] | 585 | bool |
---|
[1374fd3] | 586 | rtems_capture_trigger (rtems_capture_task_t* ft, |
---|
| 587 | rtems_capture_task_t* tt, |
---|
| 588 | uint32_t events) |
---|
| 589 | { |
---|
| 590 | /* |
---|
| 591 | * If we have not triggered then see if this is a trigger condition. |
---|
| 592 | */ |
---|
| 593 | if (!(capture_flags & RTEMS_CAPTURE_TRIGGERED)) |
---|
| 594 | { |
---|
| 595 | rtems_capture_control_t* fc = NULL; |
---|
| 596 | rtems_capture_control_t* tc = NULL; |
---|
| 597 | uint32_t from_events = 0; |
---|
| 598 | uint32_t to_events = 0; |
---|
| 599 | uint32_t from_to_events = 0; |
---|
| 600 | |
---|
| 601 | if (ft) |
---|
| 602 | { |
---|
| 603 | fc = ft->control; |
---|
| 604 | if (fc) |
---|
| 605 | from_events = fc->from_triggers & events; |
---|
| 606 | } |
---|
| 607 | |
---|
| 608 | if (tt) |
---|
| 609 | { |
---|
| 610 | tc = tt->control; |
---|
| 611 | if (tc) |
---|
| 612 | { |
---|
| 613 | to_events = tc->to_triggers & events; |
---|
| 614 | if (ft && tc->by_valid) |
---|
| 615 | from_to_events = tc->by_triggers & events; |
---|
| 616 | } |
---|
| 617 | } |
---|
| 618 | |
---|
| 619 | /* |
---|
| 620 | * Check if we have any from or to events. These are the |
---|
| 621 | * from any or to any type triggers. All from/to triggers are |
---|
| 622 | * listed in the to's control with the from in the from list. |
---|
| 623 | * |
---|
| 624 | * The masking above means any flag set is a trigger. |
---|
| 625 | */ |
---|
| 626 | if (from_events || to_events) |
---|
| 627 | { |
---|
| 628 | capture_flags |= RTEMS_CAPTURE_TRIGGERED; |
---|
| 629 | return 1; |
---|
| 630 | } |
---|
| 631 | |
---|
| 632 | /* |
---|
| 633 | * Check the from->to events. |
---|
| 634 | */ |
---|
| 635 | if (from_to_events) |
---|
| 636 | { |
---|
| 637 | if (rtems_capture_by_in_to (events, ft, tc)) |
---|
| 638 | { |
---|
| 639 | capture_flags |= RTEMS_CAPTURE_TRIGGERED; |
---|
| 640 | return 1; |
---|
| 641 | } |
---|
| 642 | } |
---|
| 643 | |
---|
| 644 | return 0; |
---|
| 645 | } |
---|
| 646 | |
---|
| 647 | return 1; |
---|
| 648 | } |
---|
| 649 | |
---|
[a923a82] | 650 | /* |
---|
| 651 | * rtems_capture_create_task |
---|
| 652 | * |
---|
| 653 | * DESCRIPTION: |
---|
| 654 | * |
---|
| 655 | * This function is called when a task is created. |
---|
| 656 | * |
---|
| 657 | */ |
---|
[1167235] | 658 | static bool |
---|
[a923a82] | 659 | rtems_capture_create_task (rtems_tcb* current_task, |
---|
| 660 | rtems_tcb* new_task) |
---|
| 661 | { |
---|
| 662 | rtems_capture_task_t* ct; |
---|
| 663 | rtems_capture_task_t* nt; |
---|
| 664 | |
---|
| 665 | ct = current_task->extensions[capture_extension_index]; |
---|
| 666 | |
---|
| 667 | /* |
---|
[1374fd3] | 668 | * The task pointers may not be known as the task may have |
---|
[a923a82] | 669 | * been created before the capture engine was open. Add them. |
---|
| 670 | */ |
---|
| 671 | |
---|
| 672 | if (ct == NULL) |
---|
| 673 | ct = rtems_capture_create_capture_task (current_task); |
---|
| 674 | |
---|
| 675 | /* |
---|
| 676 | * Create the new task's capture control block. |
---|
| 677 | */ |
---|
| 678 | nt = rtems_capture_create_capture_task (new_task); |
---|
| 679 | |
---|
[1374fd3] | 680 | if (rtems_capture_trigger (ct, nt, RTEMS_CAPTURE_CREATE)) |
---|
| 681 | { |
---|
| 682 | rtems_capture_record (ct, RTEMS_CAPTURE_CREATED_BY_EVENT); |
---|
| 683 | rtems_capture_record (nt, RTEMS_CAPTURE_CREATED_EVENT); |
---|
| 684 | } |
---|
[a923a82] | 685 | |
---|
| 686 | return 1 == 1; |
---|
| 687 | } |
---|
| 688 | |
---|
| 689 | /* |
---|
| 690 | * rtems_capture_start_task |
---|
| 691 | * |
---|
| 692 | * DESCRIPTION: |
---|
| 693 | * |
---|
| 694 | * This function is called when a task is started. |
---|
| 695 | * |
---|
| 696 | */ |
---|
| 697 | static rtems_extension |
---|
| 698 | rtems_capture_start_task (rtems_tcb* current_task, |
---|
| 699 | rtems_tcb* started_task) |
---|
| 700 | { |
---|
| 701 | /* |
---|
| 702 | * Get the capture task control block so we can trace this |
---|
| 703 | * event. |
---|
| 704 | */ |
---|
| 705 | rtems_capture_task_t* ct; |
---|
| 706 | rtems_capture_task_t* st; |
---|
| 707 | |
---|
| 708 | ct = current_task->extensions[capture_extension_index]; |
---|
| 709 | st = started_task->extensions[capture_extension_index]; |
---|
| 710 | |
---|
| 711 | /* |
---|
[1374fd3] | 712 | * The task pointers may not be known as the task may have |
---|
[a923a82] | 713 | * been created before the capture engine was open. Add them. |
---|
| 714 | */ |
---|
| 715 | |
---|
| 716 | if (ct == NULL) |
---|
| 717 | ct = rtems_capture_create_capture_task (current_task); |
---|
| 718 | |
---|
| 719 | if (st == NULL) |
---|
| 720 | st = rtems_capture_create_capture_task (started_task); |
---|
[1374fd3] | 721 | |
---|
| 722 | if (rtems_capture_trigger (ct, st, RTEMS_CAPTURE_START)) |
---|
| 723 | { |
---|
| 724 | rtems_capture_record (ct, RTEMS_CAPTURE_STARTED_BY_EVENT); |
---|
| 725 | rtems_capture_record (st, RTEMS_CAPTURE_STARTED_EVENT); |
---|
| 726 | } |
---|
[aed742c] | 727 | |
---|
[a923a82] | 728 | rtems_capture_init_stack_usage (st); |
---|
| 729 | } |
---|
| 730 | |
---|
| 731 | /* |
---|
| 732 | * rtems_capture_restart_task |
---|
| 733 | * |
---|
| 734 | * DESCRIPTION: |
---|
| 735 | * |
---|
| 736 | * This function is called when a task is restarted. |
---|
| 737 | * |
---|
| 738 | */ |
---|
| 739 | static rtems_extension |
---|
| 740 | rtems_capture_restart_task (rtems_tcb* current_task, |
---|
| 741 | rtems_tcb* restarted_task) |
---|
| 742 | { |
---|
| 743 | /* |
---|
| 744 | * Get the capture task control block so we can trace this |
---|
| 745 | * event. |
---|
| 746 | */ |
---|
| 747 | rtems_capture_task_t* ct; |
---|
| 748 | rtems_capture_task_t* rt; |
---|
| 749 | |
---|
| 750 | ct = current_task->extensions[capture_extension_index]; |
---|
| 751 | rt = restarted_task->extensions[capture_extension_index]; |
---|
| 752 | |
---|
| 753 | /* |
---|
[1374fd3] | 754 | * The task pointers may not be known as the task may have |
---|
[a923a82] | 755 | * been created before the capture engine was open. Add them. |
---|
| 756 | */ |
---|
| 757 | |
---|
| 758 | if (ct == NULL) |
---|
| 759 | ct = rtems_capture_create_capture_task (current_task); |
---|
| 760 | |
---|
| 761 | if (rt == NULL) |
---|
| 762 | rt = rtems_capture_create_capture_task (restarted_task); |
---|
| 763 | |
---|
[1374fd3] | 764 | if (rtems_capture_trigger (ct, rt, RTEMS_CAPTURE_RESTART)) |
---|
| 765 | { |
---|
| 766 | rtems_capture_record (ct, RTEMS_CAPTURE_RESTARTED_BY_EVENT); |
---|
| 767 | rtems_capture_record (rt, RTEMS_CAPTURE_RESTARTED_EVENT); |
---|
| 768 | } |
---|
[a923a82] | 769 | |
---|
| 770 | rtems_capture_task_stack_usage (rt); |
---|
| 771 | rtems_capture_init_stack_usage (rt); |
---|
| 772 | } |
---|
| 773 | |
---|
| 774 | /* |
---|
| 775 | * rtems_capture_delete_task |
---|
| 776 | * |
---|
| 777 | * DESCRIPTION: |
---|
| 778 | * |
---|
| 779 | * This function is called when a task is deleted. |
---|
| 780 | * |
---|
| 781 | */ |
---|
| 782 | static rtems_extension |
---|
| 783 | rtems_capture_delete_task (rtems_tcb* current_task, |
---|
| 784 | rtems_tcb* deleted_task) |
---|
| 785 | { |
---|
| 786 | /* |
---|
| 787 | * Get the capture task control block so we can trace this |
---|
| 788 | * event. |
---|
| 789 | */ |
---|
| 790 | rtems_capture_task_t* ct; |
---|
| 791 | rtems_capture_task_t* dt; |
---|
| 792 | |
---|
| 793 | /* |
---|
[1374fd3] | 794 | * The task pointers may not be known as the task may have |
---|
[a923a82] | 795 | * been created before the capture engine was open. Add them. |
---|
| 796 | */ |
---|
| 797 | |
---|
| 798 | ct = current_task->extensions[capture_extension_index]; |
---|
| 799 | dt = deleted_task->extensions[capture_extension_index]; |
---|
| 800 | |
---|
| 801 | if (ct == NULL) |
---|
| 802 | ct = rtems_capture_create_capture_task (current_task); |
---|
| 803 | |
---|
| 804 | if (dt == NULL) |
---|
| 805 | dt = rtems_capture_create_capture_task (deleted_task); |
---|
| 806 | |
---|
[1374fd3] | 807 | if (rtems_capture_trigger (ct, dt, RTEMS_CAPTURE_DELETE)) |
---|
| 808 | { |
---|
| 809 | rtems_capture_record (ct, RTEMS_CAPTURE_DELETED_BY_EVENT); |
---|
| 810 | rtems_capture_record (dt, RTEMS_CAPTURE_DELETED_EVENT); |
---|
| 811 | } |
---|
| 812 | |
---|
[a923a82] | 813 | rtems_capture_task_stack_usage (dt); |
---|
| 814 | |
---|
| 815 | /* |
---|
[1374fd3] | 816 | * This task's tcb will be invalid. This signals the |
---|
| 817 | * task has been deleted. |
---|
[a923a82] | 818 | */ |
---|
| 819 | dt->tcb = 0; |
---|
[32293d69] | 820 | |
---|
[1374fd3] | 821 | rtems_capture_destroy_capture_task (dt); |
---|
[a923a82] | 822 | } |
---|
| 823 | |
---|
| 824 | /* |
---|
| 825 | * rtems_capture_begin_task |
---|
| 826 | * |
---|
| 827 | * DESCRIPTION: |
---|
| 828 | * |
---|
| 829 | * This function is called when a task is begun. |
---|
| 830 | * |
---|
| 831 | */ |
---|
| 832 | static rtems_extension |
---|
| 833 | rtems_capture_begin_task (rtems_tcb* begin_task) |
---|
| 834 | { |
---|
| 835 | /* |
---|
| 836 | * Get the capture task control block so we can trace this |
---|
| 837 | * event. |
---|
| 838 | */ |
---|
| 839 | rtems_capture_task_t* bt; |
---|
| 840 | |
---|
| 841 | bt = begin_task->extensions[capture_extension_index]; |
---|
| 842 | |
---|
| 843 | /* |
---|
[1374fd3] | 844 | * The task pointers may not be known as the task may have |
---|
[a923a82] | 845 | * been created before the capture engine was open. Add them. |
---|
| 846 | */ |
---|
| 847 | |
---|
| 848 | if (bt == NULL) |
---|
| 849 | bt = rtems_capture_create_capture_task (begin_task); |
---|
| 850 | |
---|
[1374fd3] | 851 | if (rtems_capture_trigger (NULL, bt, RTEMS_CAPTURE_BEGIN)) |
---|
| 852 | rtems_capture_record (bt, RTEMS_CAPTURE_BEGIN_EVENT); |
---|
[a923a82] | 853 | } |
---|
| 854 | |
---|
| 855 | /* |
---|
| 856 | * rtems_capture_exitted_task |
---|
| 857 | * |
---|
| 858 | * DESCRIPTION: |
---|
| 859 | * |
---|
| 860 | * This function is called when a task is exitted. That is |
---|
| 861 | * returned rather than was deleted. |
---|
| 862 | * |
---|
| 863 | */ |
---|
| 864 | static rtems_extension |
---|
| 865 | rtems_capture_exitted_task (rtems_tcb* exitted_task) |
---|
| 866 | { |
---|
| 867 | /* |
---|
| 868 | * Get the capture task control block so we can trace this |
---|
| 869 | * event. |
---|
| 870 | */ |
---|
| 871 | rtems_capture_task_t* et; |
---|
| 872 | |
---|
| 873 | et = exitted_task->extensions[capture_extension_index]; |
---|
| 874 | |
---|
| 875 | /* |
---|
[1374fd3] | 876 | * The task pointers may not be known as the task may have |
---|
[a923a82] | 877 | * been created before the capture engine was open. Add them. |
---|
| 878 | */ |
---|
| 879 | |
---|
| 880 | if (et == NULL) |
---|
| 881 | et = rtems_capture_create_capture_task (exitted_task); |
---|
| 882 | |
---|
[1374fd3] | 883 | if (rtems_capture_trigger (NULL, et, RTEMS_CAPTURE_EXITTED)) |
---|
| 884 | rtems_capture_record (et, RTEMS_CAPTURE_EXITTED_EVENT); |
---|
[a923a82] | 885 | |
---|
| 886 | rtems_capture_task_stack_usage (et); |
---|
| 887 | } |
---|
| 888 | |
---|
| 889 | /* |
---|
| 890 | * rtems_capture_switch_task |
---|
| 891 | * |
---|
| 892 | * DESCRIPTION: |
---|
| 893 | * |
---|
| 894 | * This function is called when a context is switched. |
---|
| 895 | * |
---|
| 896 | */ |
---|
| 897 | static rtems_extension |
---|
| 898 | rtems_capture_switch_task (rtems_tcb* current_task, |
---|
| 899 | rtems_tcb* heir_task) |
---|
| 900 | { |
---|
| 901 | /* |
---|
| 902 | * Only perform context switch trace processing if tracing is |
---|
| 903 | * enabled. |
---|
| 904 | */ |
---|
| 905 | if (capture_flags & RTEMS_CAPTURE_ON) |
---|
| 906 | { |
---|
[1374fd3] | 907 | uint32_t ticks; |
---|
| 908 | uint32_t tick_offset; |
---|
[aed742c] | 909 | |
---|
[a923a82] | 910 | /* |
---|
| 911 | * Get the cpature task control block so we can update the |
---|
[1374fd3] | 912 | * reference and perform any watch or trigger functions. |
---|
| 913 | * The task pointers may not be known as the task may have |
---|
[a923a82] | 914 | * been created before the capture engine was open. Add them. |
---|
| 915 | */ |
---|
| 916 | rtems_capture_task_t* ct; |
---|
| 917 | rtems_capture_task_t* ht; |
---|
| 918 | |
---|
[3547ed6] | 919 | |
---|
| 920 | if (_States_Is_transient (current_task->current_state) |
---|
| 921 | || _States_Is_dormant (current_task->current_state)) |
---|
[a923a82] | 922 | { |
---|
| 923 | rtems_id ct_id = current_task->Object.id; |
---|
| 924 | |
---|
[32293d69] | 925 | for (ct = capture_tasks; ct; ct = ct->forw) |
---|
[a923a82] | 926 | if (ct->id == ct_id) |
---|
| 927 | break; |
---|
| 928 | } |
---|
| 929 | else |
---|
| 930 | { |
---|
| 931 | ct = current_task->extensions[capture_extension_index]; |
---|
| 932 | |
---|
| 933 | if (ct == NULL) |
---|
| 934 | ct = rtems_capture_create_capture_task (current_task); |
---|
| 935 | } |
---|
| 936 | |
---|
| 937 | ht = heir_task->extensions[capture_extension_index]; |
---|
| 938 | |
---|
| 939 | if (ht == NULL) |
---|
| 940 | ht = rtems_capture_create_capture_task (heir_task); |
---|
| 941 | |
---|
| 942 | /* |
---|
| 943 | * Update the execution time. Assume the tick will not overflow |
---|
| 944 | * for now. This may need to change. |
---|
| 945 | */ |
---|
| 946 | rtems_capture_get_time (&ticks, &tick_offset); |
---|
| 947 | |
---|
| 948 | /* |
---|
| 949 | * We could end up with null pointers for both the current task |
---|
| 950 | * and the heir task. |
---|
| 951 | */ |
---|
| 952 | |
---|
| 953 | if (ht) |
---|
| 954 | { |
---|
| 955 | ht->in++; |
---|
| 956 | ht->ticks_in = ticks; |
---|
| 957 | ht->tick_offset_in = tick_offset; |
---|
| 958 | } |
---|
[aed742c] | 959 | |
---|
[a923a82] | 960 | if (ct) |
---|
| 961 | { |
---|
| 962 | ct->out++; |
---|
| 963 | ct->ticks += ticks - ct->ticks_in; |
---|
| 964 | |
---|
| 965 | if (capture_timestamp) |
---|
| 966 | { |
---|
| 967 | tick_offset += capture_tick_period - ct->tick_offset_in; |
---|
[aed742c] | 968 | |
---|
[a923a82] | 969 | if (tick_offset < capture_tick_period) |
---|
| 970 | ct->tick_offset = tick_offset; |
---|
| 971 | else |
---|
| 972 | { |
---|
| 973 | ct->ticks++; |
---|
| 974 | ct->tick_offset = tick_offset - capture_tick_period; |
---|
| 975 | } |
---|
| 976 | } |
---|
| 977 | else |
---|
| 978 | { |
---|
| 979 | ct->tick_offset += 100; |
---|
| 980 | } |
---|
| 981 | } |
---|
| 982 | |
---|
[1374fd3] | 983 | if (rtems_capture_trigger (ct, ht, RTEMS_CAPTURE_SWITCH)) |
---|
[a923a82] | 984 | { |
---|
| 985 | rtems_capture_record (ct, RTEMS_CAPTURE_SWITCHED_OUT_EVENT); |
---|
| 986 | rtems_capture_record (ht, RTEMS_CAPTURE_SWITCHED_IN_EVENT); |
---|
| 987 | } |
---|
| 988 | } |
---|
| 989 | } |
---|
| 990 | |
---|
| 991 | /* |
---|
| 992 | * rtems_capture_open |
---|
| 993 | * |
---|
| 994 | * DESCRIPTION: |
---|
| 995 | * |
---|
| 996 | * This function initialises the realtime capture engine allocating the trace |
---|
| 997 | * buffer. It is assumed we have a working heap at stage of initialisation. |
---|
| 998 | * |
---|
| 999 | */ |
---|
| 1000 | rtems_status_code |
---|
[3e08d4e] | 1001 | rtems_capture_open (uint32_t size, rtems_capture_timestamp timestamp) |
---|
[a923a82] | 1002 | { |
---|
| 1003 | rtems_extensions_table capture_extensions; |
---|
| 1004 | rtems_name name; |
---|
| 1005 | rtems_status_code sc; |
---|
| 1006 | |
---|
| 1007 | /* |
---|
| 1008 | * See if the capture engine is already open. |
---|
| 1009 | */ |
---|
| 1010 | |
---|
| 1011 | if (capture_records) |
---|
| 1012 | return RTEMS_RESOURCE_IN_USE; |
---|
| 1013 | |
---|
| 1014 | capture_records = malloc (size * sizeof (rtems_capture_record_t)); |
---|
| 1015 | |
---|
| 1016 | if (capture_records == NULL) |
---|
| 1017 | return RTEMS_NO_MEMORY; |
---|
| 1018 | |
---|
| 1019 | capture_size = size; |
---|
| 1020 | capture_count = 0; |
---|
| 1021 | capture_in = capture_records; |
---|
| 1022 | capture_out = 0; |
---|
| 1023 | capture_flags = 0; |
---|
| 1024 | capture_tasks = NULL; |
---|
| 1025 | capture_ceiling = 0; |
---|
| 1026 | capture_floor = 255; |
---|
| 1027 | |
---|
| 1028 | /* |
---|
| 1029 | * Create the extension table. This is copied so we |
---|
| 1030 | * can create it as a local. |
---|
| 1031 | */ |
---|
| 1032 | capture_extensions.thread_create = rtems_capture_create_task; |
---|
| 1033 | capture_extensions.thread_start = rtems_capture_start_task; |
---|
| 1034 | capture_extensions.thread_restart = rtems_capture_restart_task; |
---|
| 1035 | capture_extensions.thread_delete = rtems_capture_delete_task; |
---|
| 1036 | capture_extensions.thread_switch = rtems_capture_switch_task; |
---|
| 1037 | capture_extensions.thread_begin = rtems_capture_begin_task; |
---|
| 1038 | capture_extensions.thread_exitted = rtems_capture_exitted_task; |
---|
| 1039 | capture_extensions.fatal = NULL; |
---|
| 1040 | |
---|
| 1041 | /* |
---|
| 1042 | * Get the tick period from the BSP Configuration Table. |
---|
| 1043 | */ |
---|
| 1044 | capture_tick_period = _Configuration_Table->microseconds_per_tick; |
---|
[aed742c] | 1045 | |
---|
[a923a82] | 1046 | /* |
---|
| 1047 | * Register the user extension handlers for the CAPture Engine. |
---|
| 1048 | */ |
---|
| 1049 | name = rtems_build_name ('C', 'A', 'P', 'E'); |
---|
| 1050 | sc = rtems_extension_create (name, &capture_extensions, &capture_id); |
---|
| 1051 | |
---|
| 1052 | if (sc != RTEMS_SUCCESSFUL) |
---|
| 1053 | { |
---|
| 1054 | capture_id = 0; |
---|
| 1055 | free (capture_records); |
---|
| 1056 | capture_records = NULL; |
---|
| 1057 | } |
---|
| 1058 | else |
---|
| 1059 | { |
---|
[6c06288] | 1060 | capture_extension_index = rtems_object_id_get_index (capture_id);; |
---|
[a923a82] | 1061 | } |
---|
| 1062 | |
---|
| 1063 | /* |
---|
| 1064 | * Iterate over the list of existing tasks. |
---|
| 1065 | */ |
---|
| 1066 | |
---|
| 1067 | return sc; |
---|
| 1068 | } |
---|
| 1069 | |
---|
| 1070 | /* |
---|
| 1071 | * rtems_capture_close |
---|
| 1072 | * |
---|
| 1073 | * DESCRIPTION: |
---|
| 1074 | * |
---|
| 1075 | * This function shutdowns the capture engine and release any claimed |
---|
| 1076 | * resources. |
---|
| 1077 | */ |
---|
| 1078 | rtems_status_code |
---|
[347a3fe] | 1079 | rtems_capture_close (void) |
---|
[a923a82] | 1080 | { |
---|
| 1081 | rtems_interrupt_level level; |
---|
| 1082 | rtems_capture_task_t* task; |
---|
| 1083 | rtems_capture_control_t* control; |
---|
| 1084 | rtems_capture_record_t* records; |
---|
| 1085 | rtems_status_code sc; |
---|
| 1086 | |
---|
| 1087 | rtems_interrupt_disable (level); |
---|
| 1088 | |
---|
| 1089 | if (!capture_records) |
---|
| 1090 | { |
---|
| 1091 | rtems_interrupt_enable (level); |
---|
| 1092 | return RTEMS_SUCCESSFUL; |
---|
| 1093 | } |
---|
| 1094 | |
---|
[1374fd3] | 1095 | capture_flags &= ~(RTEMS_CAPTURE_ON | RTEMS_CAPTURE_ONLY_MONITOR); |
---|
[a923a82] | 1096 | |
---|
| 1097 | records = capture_records; |
---|
| 1098 | capture_records = NULL; |
---|
| 1099 | |
---|
| 1100 | rtems_interrupt_enable (level); |
---|
| 1101 | |
---|
| 1102 | /* |
---|
| 1103 | * Delete the extension first. This means we are now able to |
---|
| 1104 | * release the resources we have without them being used. |
---|
| 1105 | */ |
---|
| 1106 | |
---|
| 1107 | sc = rtems_extension_delete (capture_id); |
---|
| 1108 | |
---|
| 1109 | if (sc != RTEMS_SUCCESSFUL) |
---|
| 1110 | return sc; |
---|
| 1111 | |
---|
| 1112 | task = capture_tasks; |
---|
[aed742c] | 1113 | |
---|
[a923a82] | 1114 | while (task) |
---|
| 1115 | { |
---|
| 1116 | rtems_capture_task_t* delete = task; |
---|
[32293d69] | 1117 | task = task->forw; |
---|
[a923a82] | 1118 | _Workspace_Free (delete); |
---|
| 1119 | } |
---|
| 1120 | |
---|
| 1121 | capture_tasks = NULL; |
---|
| 1122 | |
---|
| 1123 | control = capture_controls; |
---|
[aed742c] | 1124 | |
---|
[a923a82] | 1125 | while (control) |
---|
| 1126 | { |
---|
| 1127 | rtems_capture_control_t* delete = control; |
---|
| 1128 | control = control->next; |
---|
| 1129 | _Workspace_Free (delete); |
---|
| 1130 | } |
---|
| 1131 | |
---|
| 1132 | capture_controls = NULL; |
---|
| 1133 | |
---|
| 1134 | if (capture_records) |
---|
| 1135 | { |
---|
| 1136 | free (capture_records); |
---|
| 1137 | capture_records = NULL; |
---|
| 1138 | } |
---|
| 1139 | |
---|
| 1140 | return RTEMS_SUCCESSFUL; |
---|
| 1141 | } |
---|
| 1142 | |
---|
| 1143 | /* |
---|
| 1144 | * rtems_capture_control |
---|
| 1145 | * |
---|
| 1146 | * DESCRIPTION: |
---|
| 1147 | * |
---|
| 1148 | * This function allows control of tracing at a global level. |
---|
| 1149 | */ |
---|
| 1150 | rtems_status_code |
---|
[1167235] | 1151 | rtems_capture_control (bool enable) |
---|
[a923a82] | 1152 | { |
---|
| 1153 | rtems_interrupt_level level; |
---|
| 1154 | |
---|
| 1155 | rtems_interrupt_disable (level); |
---|
| 1156 | |
---|
| 1157 | if (!capture_records) |
---|
| 1158 | { |
---|
| 1159 | rtems_interrupt_enable (level); |
---|
| 1160 | return RTEMS_UNSATISFIED; |
---|
| 1161 | } |
---|
| 1162 | |
---|
| 1163 | if (enable) |
---|
| 1164 | capture_flags |= RTEMS_CAPTURE_ON; |
---|
| 1165 | else |
---|
| 1166 | capture_flags &= ~RTEMS_CAPTURE_ON; |
---|
| 1167 | |
---|
| 1168 | rtems_interrupt_enable (level); |
---|
| 1169 | |
---|
| 1170 | return RTEMS_SUCCESSFUL; |
---|
| 1171 | } |
---|
| 1172 | |
---|
[1374fd3] | 1173 | /* |
---|
| 1174 | * rtems_capture_monitor |
---|
| 1175 | * |
---|
| 1176 | * DESCRIPTION: |
---|
| 1177 | * |
---|
| 1178 | * This function enable the monitor mode. When in the monitor mode |
---|
| 1179 | * the tasks are monitored but no data is saved. This can be used |
---|
| 1180 | * to profile the load on a system. |
---|
| 1181 | */ |
---|
| 1182 | rtems_status_code |
---|
[1167235] | 1183 | rtems_capture_monitor (bool enable) |
---|
[1374fd3] | 1184 | { |
---|
| 1185 | rtems_interrupt_level level; |
---|
| 1186 | |
---|
| 1187 | rtems_interrupt_disable (level); |
---|
| 1188 | |
---|
| 1189 | if (!capture_records) |
---|
| 1190 | { |
---|
| 1191 | rtems_interrupt_enable (level); |
---|
| 1192 | return RTEMS_UNSATISFIED; |
---|
| 1193 | } |
---|
| 1194 | |
---|
| 1195 | if (enable) |
---|
| 1196 | capture_flags |= RTEMS_CAPTURE_ONLY_MONITOR; |
---|
| 1197 | else |
---|
| 1198 | capture_flags &= ~RTEMS_CAPTURE_ONLY_MONITOR; |
---|
| 1199 | |
---|
| 1200 | rtems_interrupt_enable (level); |
---|
| 1201 | |
---|
| 1202 | return RTEMS_SUCCESSFUL; |
---|
| 1203 | } |
---|
| 1204 | |
---|
[a923a82] | 1205 | /* |
---|
| 1206 | * rtems_capture_flush |
---|
| 1207 | * |
---|
| 1208 | * DESCRIPTION: |
---|
| 1209 | * |
---|
| 1210 | * This function flushes the capture buffer. The prime parameter allows the |
---|
| 1211 | * capture engine to also be primed again. |
---|
| 1212 | */ |
---|
| 1213 | rtems_status_code |
---|
[1167235] | 1214 | rtems_capture_flush (bool prime) |
---|
[a923a82] | 1215 | { |
---|
| 1216 | rtems_interrupt_level level; |
---|
| 1217 | rtems_capture_task_t* task; |
---|
| 1218 | |
---|
| 1219 | rtems_interrupt_disable (level); |
---|
| 1220 | |
---|
[32293d69] | 1221 | for (task = capture_tasks; task != NULL; task = task->forw) |
---|
[1374fd3] | 1222 | { |
---|
[a923a82] | 1223 | task->flags &= ~RTEMS_CAPTURE_TRACED; |
---|
[1374fd3] | 1224 | task->refcount = 0; |
---|
| 1225 | } |
---|
[a923a82] | 1226 | |
---|
| 1227 | if (prime) |
---|
| 1228 | capture_flags &= ~(RTEMS_CAPTURE_TRIGGERED | RTEMS_CAPTURE_OVERFLOW); |
---|
| 1229 | else |
---|
| 1230 | capture_flags &= ~RTEMS_CAPTURE_OVERFLOW; |
---|
| 1231 | |
---|
[1374fd3] | 1232 | capture_count = 0; |
---|
| 1233 | capture_in = capture_records; |
---|
| 1234 | capture_out = 0; |
---|
| 1235 | |
---|
[aed742c] | 1236 | rtems_interrupt_enable (level); |
---|
[a923a82] | 1237 | |
---|
[1374fd3] | 1238 | task = capture_tasks; |
---|
| 1239 | |
---|
| 1240 | while (task) |
---|
| 1241 | { |
---|
| 1242 | rtems_capture_task_t* check = task; |
---|
| 1243 | task = task->forw; |
---|
| 1244 | rtems_capture_destroy_capture_task (check); |
---|
| 1245 | } |
---|
| 1246 | |
---|
[a923a82] | 1247 | return RTEMS_SUCCESSFUL; |
---|
| 1248 | } |
---|
| 1249 | |
---|
| 1250 | /* |
---|
| 1251 | * rtems_capture_watch_add |
---|
| 1252 | * |
---|
| 1253 | * DESCRIPTION: |
---|
| 1254 | * |
---|
| 1255 | * This function defines a watch for a specific task given a name. A watch |
---|
| 1256 | * causes it to be traced either in or out of context. The watch can be |
---|
| 1257 | * optionally enabled or disabled with the set routine. It is disabled by |
---|
| 1258 | * default. |
---|
| 1259 | */ |
---|
| 1260 | rtems_status_code |
---|
| 1261 | rtems_capture_watch_add (rtems_name name, rtems_id id) |
---|
| 1262 | { |
---|
| 1263 | rtems_capture_control_t* control; |
---|
| 1264 | |
---|
| 1265 | if ((name == 0) && (id == 0)) |
---|
| 1266 | return RTEMS_UNSATISFIED; |
---|
| 1267 | |
---|
| 1268 | control = rtems_capture_find_control (name, id); |
---|
| 1269 | |
---|
| 1270 | if (control && !id) |
---|
| 1271 | return RTEMS_TOO_MANY; |
---|
| 1272 | |
---|
| 1273 | if (!control) |
---|
| 1274 | control = rtems_capture_create_control (name, id); |
---|
| 1275 | |
---|
| 1276 | if (!control) |
---|
| 1277 | return RTEMS_NO_MEMORY; |
---|
| 1278 | |
---|
| 1279 | return RTEMS_SUCCESSFUL; |
---|
| 1280 | } |
---|
| 1281 | |
---|
| 1282 | /* |
---|
| 1283 | * rtems_capture_watch_del |
---|
| 1284 | * |
---|
| 1285 | * DESCRIPTION: |
---|
| 1286 | * |
---|
| 1287 | * This function removes a watch for a specific task given a name. The task |
---|
| 1288 | * description will still exist if referenced by a trace record in the trace |
---|
| 1289 | * buffer or a global watch is defined. |
---|
| 1290 | */ |
---|
| 1291 | rtems_status_code |
---|
| 1292 | rtems_capture_watch_del (rtems_name name, rtems_id id) |
---|
| 1293 | { |
---|
| 1294 | rtems_interrupt_level level; |
---|
| 1295 | rtems_capture_control_t* control; |
---|
| 1296 | rtems_capture_control_t** prev_control; |
---|
| 1297 | rtems_capture_task_t* task; |
---|
[1167235] | 1298 | bool found = false; |
---|
[a923a82] | 1299 | |
---|
| 1300 | /* |
---|
| 1301 | * Should this test be for wildcards ? |
---|
| 1302 | */ |
---|
| 1303 | |
---|
| 1304 | for (prev_control = &capture_controls, control = capture_controls; |
---|
| 1305 | control != NULL; ) |
---|
| 1306 | { |
---|
[1374fd3] | 1307 | if (rtems_capture_match_name_id (control->name, control->id, name, id)) |
---|
[a923a82] | 1308 | { |
---|
| 1309 | rtems_interrupt_disable (level); |
---|
[aed742c] | 1310 | |
---|
[32293d69] | 1311 | for (task = capture_tasks; task != NULL; task = task->forw) |
---|
[a923a82] | 1312 | if (task->control == control) |
---|
| 1313 | task->control = 0; |
---|
| 1314 | |
---|
| 1315 | *prev_control = control->next; |
---|
| 1316 | |
---|
| 1317 | rtems_interrupt_enable (level); |
---|
| 1318 | |
---|
| 1319 | _Workspace_Free (control); |
---|
| 1320 | |
---|
| 1321 | control = *prev_control; |
---|
| 1322 | |
---|
[1167235] | 1323 | found = true; |
---|
[a923a82] | 1324 | } |
---|
| 1325 | else |
---|
| 1326 | { |
---|
| 1327 | prev_control = &control->next; |
---|
| 1328 | control = control->next; |
---|
[1374fd3] | 1329 | } |
---|
[a923a82] | 1330 | } |
---|
| 1331 | |
---|
| 1332 | if (found) |
---|
| 1333 | return RTEMS_SUCCESSFUL; |
---|
| 1334 | |
---|
| 1335 | return RTEMS_INVALID_NAME; |
---|
| 1336 | } |
---|
| 1337 | |
---|
| 1338 | /* |
---|
| 1339 | * rtems_capture_watch_set |
---|
| 1340 | * |
---|
| 1341 | * DESCRIPTION: |
---|
| 1342 | * |
---|
| 1343 | * This function allows control of a watch. The watch can be enabled or |
---|
| 1344 | * disabled. |
---|
| 1345 | */ |
---|
| 1346 | rtems_status_code |
---|
[1167235] | 1347 | rtems_capture_watch_ctrl (rtems_name name, rtems_id id, bool enable) |
---|
[a923a82] | 1348 | { |
---|
| 1349 | rtems_interrupt_level level; |
---|
| 1350 | rtems_capture_control_t* control; |
---|
[1167235] | 1351 | bool found = false; |
---|
[aed742c] | 1352 | |
---|
[a923a82] | 1353 | /* |
---|
| 1354 | * Find the control and then set the watch. It must exist before it can |
---|
| 1355 | * be controlled. |
---|
| 1356 | */ |
---|
| 1357 | for (control = capture_controls; control != NULL; control = control->next) |
---|
| 1358 | { |
---|
[1374fd3] | 1359 | if (rtems_capture_match_name_id (control->name, control->id, name, id)) |
---|
[a923a82] | 1360 | { |
---|
| 1361 | rtems_interrupt_disable (level); |
---|
| 1362 | |
---|
| 1363 | if (enable) |
---|
| 1364 | control->flags |= RTEMS_CAPTURE_WATCH; |
---|
| 1365 | else |
---|
| 1366 | control->flags &= ~RTEMS_CAPTURE_WATCH; |
---|
| 1367 | |
---|
| 1368 | rtems_interrupt_enable (level); |
---|
| 1369 | |
---|
[1167235] | 1370 | found = true; |
---|
[aed742c] | 1371 | } |
---|
[a923a82] | 1372 | } |
---|
| 1373 | |
---|
| 1374 | if (found) |
---|
| 1375 | return RTEMS_SUCCESSFUL; |
---|
| 1376 | |
---|
| 1377 | return RTEMS_INVALID_NAME; |
---|
| 1378 | } |
---|
| 1379 | |
---|
| 1380 | /* |
---|
| 1381 | * rtems_capture_watch_global |
---|
| 1382 | * |
---|
| 1383 | * DESCRIPTION: |
---|
| 1384 | * |
---|
| 1385 | * This function allows control of a global watch. The watch can be enabled or |
---|
| 1386 | * disabled. A global watch configures all tasks below the ceiling and above |
---|
| 1387 | * the floor to be traced. |
---|
| 1388 | */ |
---|
| 1389 | rtems_status_code |
---|
[1167235] | 1390 | rtems_capture_watch_global (bool enable) |
---|
[a923a82] | 1391 | { |
---|
| 1392 | rtems_interrupt_level level; |
---|
[aed742c] | 1393 | |
---|
[a923a82] | 1394 | rtems_interrupt_disable (level); |
---|
| 1395 | |
---|
| 1396 | /* |
---|
| 1397 | * We need to keep specific and global watches separate so |
---|
| 1398 | * a global enable/disable does not lose a specific watch. |
---|
| 1399 | */ |
---|
| 1400 | if (enable) |
---|
| 1401 | capture_flags |= RTEMS_CAPTURE_GLOBAL_WATCH; |
---|
| 1402 | else |
---|
| 1403 | capture_flags &= ~RTEMS_CAPTURE_GLOBAL_WATCH; |
---|
| 1404 | |
---|
| 1405 | rtems_interrupt_enable (level); |
---|
| 1406 | |
---|
| 1407 | return RTEMS_SUCCESSFUL; |
---|
| 1408 | } |
---|
| 1409 | |
---|
| 1410 | /* |
---|
| 1411 | * rtems_capture_watch_global_on |
---|
| 1412 | * |
---|
| 1413 | * DESCRIPTION: |
---|
| 1414 | * |
---|
| 1415 | * This function returns the global watch state. |
---|
| 1416 | */ |
---|
[1167235] | 1417 | bool |
---|
[347a3fe] | 1418 | rtems_capture_watch_global_on (void) |
---|
[a923a82] | 1419 | { |
---|
| 1420 | return capture_flags & RTEMS_CAPTURE_GLOBAL_WATCH ? 1 : 0; |
---|
| 1421 | } |
---|
| 1422 | |
---|
| 1423 | /* |
---|
| 1424 | * rtems_capture_watch_ceiling |
---|
| 1425 | * |
---|
| 1426 | * DESCRIPTION: |
---|
| 1427 | * |
---|
| 1428 | * This function sets a watch ceiling. Tasks at or greating that the |
---|
| 1429 | * ceiling priority are not watched. This is a simple way to monitor |
---|
| 1430 | * an application and exclude system tasks running at a higher |
---|
| 1431 | * priority level. |
---|
| 1432 | */ |
---|
| 1433 | rtems_status_code |
---|
| 1434 | rtems_capture_watch_ceiling (rtems_task_priority ceiling) |
---|
| 1435 | { |
---|
| 1436 | capture_ceiling = ceiling; |
---|
| 1437 | return RTEMS_SUCCESSFUL; |
---|
| 1438 | } |
---|
| 1439 | |
---|
| 1440 | /* |
---|
| 1441 | * rtems_capture_watch_get_ceiling |
---|
| 1442 | * |
---|
| 1443 | * DESCRIPTION: |
---|
| 1444 | * |
---|
| 1445 | * This function gets the watch ceiling. |
---|
| 1446 | */ |
---|
| 1447 | rtems_task_priority |
---|
[347a3fe] | 1448 | rtems_capture_watch_get_ceiling (void) |
---|
[a923a82] | 1449 | { |
---|
| 1450 | return capture_ceiling; |
---|
| 1451 | } |
---|
| 1452 | |
---|
| 1453 | /* |
---|
| 1454 | * rtems_capture_watch_floor |
---|
| 1455 | * |
---|
| 1456 | * DESCRIPTION: |
---|
| 1457 | * |
---|
| 1458 | * This function sets a watch floor. Tasks at or less that the |
---|
| 1459 | * floor priority are not watched. This is a simple way to monitor |
---|
| 1460 | * an application and exclude system tasks running at a lower |
---|
| 1461 | * priority level. |
---|
| 1462 | */ |
---|
| 1463 | rtems_status_code |
---|
| 1464 | rtems_capture_watch_floor (rtems_task_priority floor) |
---|
| 1465 | { |
---|
| 1466 | capture_floor = floor; |
---|
| 1467 | return RTEMS_SUCCESSFUL; |
---|
| 1468 | } |
---|
| 1469 | |
---|
| 1470 | /* |
---|
| 1471 | * rtems_capture_watch_get_floor |
---|
| 1472 | * |
---|
| 1473 | * DESCRIPTION: |
---|
| 1474 | * |
---|
| 1475 | * This function gets the watch floor. |
---|
| 1476 | */ |
---|
| 1477 | rtems_task_priority |
---|
[347a3fe] | 1478 | rtems_capture_watch_get_floor (void) |
---|
[a923a82] | 1479 | { |
---|
| 1480 | return capture_floor; |
---|
| 1481 | } |
---|
| 1482 | |
---|
| 1483 | /* |
---|
[1374fd3] | 1484 | * rtems_capture_map_trigger |
---|
[a923a82] | 1485 | * |
---|
| 1486 | * DESCRIPTION: |
---|
| 1487 | * |
---|
[1374fd3] | 1488 | * Map the trigger to a bit mask. |
---|
[a923a82] | 1489 | * |
---|
[1374fd3] | 1490 | */ |
---|
| 1491 | uint32_t |
---|
| 1492 | rtems_capture_map_trigger (rtems_capture_trigger_t trigger) |
---|
| 1493 | { |
---|
| 1494 | /* |
---|
| 1495 | * Transform the mode and trigger to a bit map. |
---|
| 1496 | */ |
---|
| 1497 | switch (trigger) |
---|
| 1498 | { |
---|
| 1499 | case rtems_capture_switch: |
---|
| 1500 | return RTEMS_CAPTURE_SWITCH; |
---|
| 1501 | case rtems_capture_create: |
---|
| 1502 | return RTEMS_CAPTURE_CREATE; |
---|
| 1503 | case rtems_capture_start: |
---|
| 1504 | return RTEMS_CAPTURE_START; |
---|
| 1505 | case rtems_capture_restart: |
---|
| 1506 | return RTEMS_CAPTURE_RESTART; |
---|
| 1507 | case rtems_capture_delete: |
---|
| 1508 | return RTEMS_CAPTURE_DELETE; |
---|
| 1509 | case rtems_capture_begin: |
---|
| 1510 | return RTEMS_CAPTURE_BEGIN; |
---|
| 1511 | case rtems_capture_exitted: |
---|
| 1512 | return RTEMS_CAPTURE_EXITTED; |
---|
| 1513 | default: |
---|
| 1514 | break; |
---|
| 1515 | } |
---|
| 1516 | return 0; |
---|
| 1517 | } |
---|
| 1518 | |
---|
| 1519 | /* |
---|
| 1520 | * rtems_capture_set_trigger |
---|
| 1521 | * |
---|
| 1522 | * DESCRIPTION: |
---|
| 1523 | * |
---|
| 1524 | * This function sets a trigger. |
---|
[a923a82] | 1525 | * |
---|
| 1526 | * This set trigger routine will create a capture control for the |
---|
| 1527 | * target task. The task list is searched and any existing tasks |
---|
| 1528 | * are linked to the new control. |
---|
| 1529 | * |
---|
| 1530 | * We can have a number of tasks that have the same name so we |
---|
| 1531 | * search using names. This means a number of tasks can be |
---|
| 1532 | * linked to single control. |
---|
| 1533 | */ |
---|
| 1534 | rtems_status_code |
---|
[1374fd3] | 1535 | rtems_capture_set_trigger (rtems_name from_name, |
---|
| 1536 | rtems_id from_id, |
---|
| 1537 | rtems_name to_name, |
---|
| 1538 | rtems_id to_id, |
---|
| 1539 | rtems_capture_trigger_mode_t mode, |
---|
| 1540 | rtems_capture_trigger_t trigger) |
---|
[a923a82] | 1541 | { |
---|
| 1542 | rtems_capture_control_t* control; |
---|
[1374fd3] | 1543 | uint32_t flags; |
---|
| 1544 | |
---|
| 1545 | flags = rtems_capture_map_trigger (trigger); |
---|
[aed742c] | 1546 | |
---|
[a923a82] | 1547 | /* |
---|
[1374fd3] | 1548 | * The mode sets the opposite type of trigger. For example |
---|
| 1549 | * FROM ANY means trigger when the event happens TO this |
---|
| 1550 | * task. TO ANY means FROM this task. |
---|
[a923a82] | 1551 | */ |
---|
[1374fd3] | 1552 | |
---|
| 1553 | if (mode == rtems_capture_to_any) |
---|
[a923a82] | 1554 | { |
---|
[1374fd3] | 1555 | control = rtems_capture_create_control (from_name, from_id); |
---|
[a923a82] | 1556 | if (control == NULL) |
---|
| 1557 | return RTEMS_NO_MEMORY; |
---|
[1374fd3] | 1558 | control->from_triggers |= flags & RTEMS_CAPTURE_FROM_TRIGS; |
---|
[a923a82] | 1559 | } |
---|
[1374fd3] | 1560 | else |
---|
[a923a82] | 1561 | { |
---|
[1374fd3] | 1562 | control = rtems_capture_create_control (to_name, to_id); |
---|
[a923a82] | 1563 | if (control == NULL) |
---|
| 1564 | return RTEMS_NO_MEMORY; |
---|
[1374fd3] | 1565 | if (mode == rtems_capture_from_any) |
---|
| 1566 | control->to_triggers |= flags; |
---|
| 1567 | else |
---|
| 1568 | { |
---|
[1167235] | 1569 | bool done = false; |
---|
| 1570 | int i; |
---|
[1374fd3] | 1571 | |
---|
| 1572 | control->by_triggers |= flags; |
---|
| 1573 | |
---|
| 1574 | for (i = 0; i < RTEMS_CAPTURE_TRIGGER_TASKS; i++) |
---|
| 1575 | { |
---|
| 1576 | if (rtems_capture_control_by_valid (control, i) && |
---|
| 1577 | ((control->by[i].name == from_name) || |
---|
| 1578 | (from_id && (control->by[i].id == from_id)))) |
---|
| 1579 | { |
---|
| 1580 | control->by[i].trigger |= flags; |
---|
[1167235] | 1581 | done = true; |
---|
[1374fd3] | 1582 | break; |
---|
| 1583 | } |
---|
| 1584 | } |
---|
| 1585 | |
---|
| 1586 | if (!done) |
---|
| 1587 | { |
---|
| 1588 | for (i = 0; i < RTEMS_CAPTURE_TRIGGER_TASKS; i++) |
---|
| 1589 | { |
---|
| 1590 | if (!rtems_capture_control_by_valid (control, i)) |
---|
| 1591 | { |
---|
| 1592 | control->by_valid |= RTEMS_CAPTURE_CONTROL_FROM_MASK (i); |
---|
| 1593 | control->by[i].name = from_name; |
---|
| 1594 | control->by[i].id = from_id; |
---|
| 1595 | control->by[i].trigger = flags; |
---|
[1167235] | 1596 | done = true; |
---|
[1374fd3] | 1597 | break; |
---|
| 1598 | } |
---|
| 1599 | } |
---|
| 1600 | } |
---|
| 1601 | |
---|
| 1602 | if (!done) |
---|
| 1603 | return RTEMS_TOO_MANY; |
---|
| 1604 | } |
---|
| 1605 | } |
---|
| 1606 | return RTEMS_SUCCESSFUL; |
---|
| 1607 | } |
---|
[aed742c] | 1608 | |
---|
[1374fd3] | 1609 | /* |
---|
| 1610 | * rtems_capture_clear_trigger |
---|
| 1611 | * |
---|
| 1612 | * DESCRIPTION: |
---|
| 1613 | * |
---|
| 1614 | * This function clear a trigger. |
---|
| 1615 | */ |
---|
| 1616 | rtems_status_code |
---|
| 1617 | rtems_capture_clear_trigger (rtems_name from_name, |
---|
| 1618 | rtems_id from_id, |
---|
| 1619 | rtems_name to_name, |
---|
| 1620 | rtems_id to_id, |
---|
| 1621 | rtems_capture_trigger_mode_t mode, |
---|
| 1622 | rtems_capture_trigger_t trigger) |
---|
| 1623 | { |
---|
| 1624 | rtems_capture_control_t* control; |
---|
| 1625 | uint32_t flags; |
---|
| 1626 | |
---|
| 1627 | flags = rtems_capture_map_trigger (trigger); |
---|
| 1628 | |
---|
| 1629 | if (mode == rtems_capture_to_any) |
---|
| 1630 | { |
---|
| 1631 | control = rtems_capture_find_control (from_name, from_id); |
---|
| 1632 | if (control == NULL) |
---|
| 1633 | { |
---|
| 1634 | if (from_id) |
---|
| 1635 | return RTEMS_INVALID_ID; |
---|
| 1636 | return RTEMS_INVALID_NAME; |
---|
| 1637 | } |
---|
| 1638 | control->from_triggers &= ~flags; |
---|
| 1639 | } |
---|
| 1640 | else |
---|
| 1641 | { |
---|
| 1642 | control = rtems_capture_find_control (to_name, to_id); |
---|
| 1643 | if (control == NULL) |
---|
| 1644 | { |
---|
| 1645 | if (to_id) |
---|
| 1646 | return RTEMS_INVALID_ID; |
---|
| 1647 | return RTEMS_INVALID_NAME; |
---|
| 1648 | } |
---|
| 1649 | if (mode == rtems_capture_from_any) |
---|
| 1650 | control->to_triggers &= ~flags; |
---|
[a923a82] | 1651 | else |
---|
| 1652 | { |
---|
[1167235] | 1653 | bool done = false; |
---|
| 1654 | int i; |
---|
[1374fd3] | 1655 | |
---|
| 1656 | control->by_triggers &= ~flags; |
---|
| 1657 | |
---|
[a923a82] | 1658 | for (i = 0; i < RTEMS_CAPTURE_TRIGGER_TASKS; i++) |
---|
| 1659 | { |
---|
[1374fd3] | 1660 | if (rtems_capture_control_by_valid (control, i) && |
---|
| 1661 | ((control->by[i].name == from_name) || |
---|
| 1662 | (control->by[i].id == from_id))) |
---|
[a923a82] | 1663 | { |
---|
[1374fd3] | 1664 | control->by[i].trigger &= ~trigger; |
---|
| 1665 | if (control->by[i].trigger == 0) |
---|
| 1666 | control->by_valid &= ~RTEMS_CAPTURE_CONTROL_FROM_MASK (i); |
---|
[1167235] | 1667 | done = true; |
---|
[a923a82] | 1668 | break; |
---|
| 1669 | } |
---|
| 1670 | } |
---|
[1374fd3] | 1671 | |
---|
| 1672 | if (!done) |
---|
| 1673 | { |
---|
| 1674 | if (from_id) |
---|
| 1675 | return RTEMS_INVALID_ID; |
---|
| 1676 | return RTEMS_INVALID_NAME; |
---|
| 1677 | } |
---|
[a923a82] | 1678 | } |
---|
| 1679 | } |
---|
| 1680 | return RTEMS_SUCCESSFUL; |
---|
| 1681 | } |
---|
| 1682 | |
---|
| 1683 | /* |
---|
| 1684 | * rtems_capture_read |
---|
| 1685 | * |
---|
| 1686 | * DESCRIPTION: |
---|
| 1687 | * |
---|
| 1688 | * This function reads a number of records from the capture buffer. |
---|
| 1689 | * The user can optionally block and wait until the buffer as a |
---|
| 1690 | * specific number of records available or a specific time has |
---|
| 1691 | * elasped. |
---|
| 1692 | * |
---|
| 1693 | * The function returns the number of record that is has that are |
---|
| 1694 | * in a continous block of memory. If the number of available records |
---|
| 1695 | * wrap then only those records are provided. This removes the need for |
---|
| 1696 | * caller to be concerned about buffer wrappings. If the number of |
---|
| 1697 | * requested records cannot be met due to the wrapping of the records |
---|
| 1698 | * less than the specified number will be returned. |
---|
| 1699 | * |
---|
| 1700 | * The user must release the records. This is achieved with a call to |
---|
| 1701 | * rtems_capture_release. Calls this function without a release will |
---|
| 1702 | * result in at least the same number of records being released. |
---|
| 1703 | * |
---|
| 1704 | * The 'threshold' parameter is the number of records that must be |
---|
| 1705 | * captured before returning. If a timeout period is specified (non-0) |
---|
| 1706 | * any captured records will be returned. These parameters stop |
---|
| 1707 | * thrashing occuring for a small number of records, yet allows |
---|
| 1708 | * a user configured latiency to be applied for single events. |
---|
| 1709 | * |
---|
| 1710 | * The 'timeout' parameter is in micro-seconds. A value of 0 will disable |
---|
| 1711 | * the timeout. |
---|
| 1712 | * |
---|
| 1713 | */ |
---|
| 1714 | rtems_status_code |
---|
[1374fd3] | 1715 | rtems_capture_read (uint32_t threshold, |
---|
| 1716 | uint32_t timeout, |
---|
| 1717 | uint32_t* read, |
---|
[a923a82] | 1718 | rtems_capture_record_t** recs) |
---|
| 1719 | { |
---|
| 1720 | rtems_interrupt_level level; |
---|
| 1721 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
[1374fd3] | 1722 | uint32_t count; |
---|
[a923a82] | 1723 | |
---|
| 1724 | *read = 0; |
---|
| 1725 | *recs = NULL; |
---|
| 1726 | |
---|
| 1727 | rtems_interrupt_disable (level); |
---|
| 1728 | |
---|
| 1729 | /* |
---|
| 1730 | * Only one reader is allowed. |
---|
| 1731 | */ |
---|
| 1732 | |
---|
| 1733 | if (capture_flags & RTEMS_CAPTURE_READER_ACTIVE) |
---|
| 1734 | { |
---|
| 1735 | rtems_interrupt_enable (level); |
---|
| 1736 | return RTEMS_RESOURCE_IN_USE; |
---|
| 1737 | } |
---|
| 1738 | |
---|
| 1739 | capture_flags |= RTEMS_CAPTURE_READER_ACTIVE; |
---|
| 1740 | *read = count = capture_count; |
---|
| 1741 | |
---|
| 1742 | rtems_interrupt_enable (level); |
---|
| 1743 | |
---|
| 1744 | *recs = &capture_records[capture_out]; |
---|
| 1745 | |
---|
| 1746 | for (;;) |
---|
| 1747 | { |
---|
| 1748 | /* |
---|
| 1749 | * See if the count wraps the end of the record buffer. |
---|
| 1750 | */ |
---|
| 1751 | if (count && ((capture_out + count) >= capture_size)) |
---|
| 1752 | *read = capture_size - capture_out; |
---|
[aed742c] | 1753 | |
---|
[a923a82] | 1754 | /* |
---|
[aed742c] | 1755 | * Do we have a threshold and the current count has not wrapped |
---|
| 1756 | * around the end of the capture record buffer ? |
---|
[a923a82] | 1757 | */ |
---|
| 1758 | if ((*read == count) && threshold) |
---|
| 1759 | { |
---|
| 1760 | /* |
---|
| 1761 | * Do we have enough records ? |
---|
| 1762 | */ |
---|
| 1763 | if (*read < threshold) |
---|
| 1764 | { |
---|
| 1765 | rtems_event_set event_out; |
---|
| 1766 | |
---|
| 1767 | rtems_task_ident (RTEMS_SELF, RTEMS_LOCAL, &capture_reader); |
---|
| 1768 | |
---|
| 1769 | rtems_interrupt_disable (level); |
---|
[aed742c] | 1770 | |
---|
[a923a82] | 1771 | capture_flags |= RTEMS_CAPTURE_READER_WAITING; |
---|
| 1772 | |
---|
| 1773 | rtems_interrupt_enable (level); |
---|
[aed742c] | 1774 | |
---|
[a923a82] | 1775 | sc = rtems_event_receive (RTEMS_EVENT_0, |
---|
| 1776 | RTEMS_WAIT | RTEMS_EVENT_ANY, |
---|
| 1777 | TOD_MICROSECONDS_TO_TICKS (timeout), |
---|
| 1778 | &event_out); |
---|
| 1779 | |
---|
| 1780 | /* |
---|
| 1781 | * Let the user handle all other sorts of errors. This may |
---|
| 1782 | * not be the best solution, but oh well, it will do for |
---|
| 1783 | * now. |
---|
| 1784 | */ |
---|
| 1785 | if ((sc != RTEMS_SUCCESSFUL) && (sc != RTEMS_TIMEOUT)) |
---|
| 1786 | break; |
---|
| 1787 | |
---|
| 1788 | rtems_interrupt_disable (level); |
---|
| 1789 | |
---|
| 1790 | *read = count = capture_count; |
---|
| 1791 | |
---|
| 1792 | rtems_interrupt_enable (level); |
---|
| 1793 | |
---|
| 1794 | continue; |
---|
| 1795 | } |
---|
| 1796 | } |
---|
| 1797 | |
---|
| 1798 | /* |
---|
| 1799 | * Always out if we reach here. To loop use continue. |
---|
| 1800 | */ |
---|
| 1801 | break; |
---|
| 1802 | } |
---|
| 1803 | |
---|
| 1804 | return sc; |
---|
| 1805 | } |
---|
| 1806 | |
---|
| 1807 | /* |
---|
| 1808 | * rtems_capture_release |
---|
| 1809 | * |
---|
| 1810 | * DESCRIPTION: |
---|
| 1811 | * |
---|
| 1812 | * This function releases the requested number of record slots back |
---|
| 1813 | * to the capture engine. The count must match the number read. |
---|
| 1814 | */ |
---|
| 1815 | rtems_status_code |
---|
[1374fd3] | 1816 | rtems_capture_release (uint32_t count) |
---|
[a923a82] | 1817 | { |
---|
[1374fd3] | 1818 | rtems_capture_record_t* rec; |
---|
| 1819 | uint32_t counted; |
---|
| 1820 | |
---|
[a923a82] | 1821 | rtems_interrupt_level level; |
---|
| 1822 | |
---|
| 1823 | rtems_interrupt_disable (level); |
---|
| 1824 | |
---|
| 1825 | if (count > capture_count) |
---|
| 1826 | count = capture_count; |
---|
| 1827 | |
---|
[1374fd3] | 1828 | rtems_interrupt_enable (level); |
---|
| 1829 | |
---|
| 1830 | counted = count; |
---|
| 1831 | |
---|
| 1832 | rec = &capture_records[capture_out]; |
---|
| 1833 | |
---|
| 1834 | while (counted--) |
---|
| 1835 | { |
---|
| 1836 | rtems_capture_refcount_down (rec->task); |
---|
| 1837 | rtems_capture_destroy_capture_task (rec->task); |
---|
| 1838 | rec++; |
---|
| 1839 | } |
---|
| 1840 | |
---|
| 1841 | rtems_interrupt_disable (level); |
---|
| 1842 | |
---|
[a923a82] | 1843 | capture_count -= count; |
---|
| 1844 | |
---|
[1374fd3] | 1845 | capture_out = (capture_out + count) % capture_size; |
---|
| 1846 | |
---|
| 1847 | capture_flags &= ~RTEMS_CAPTURE_READER_ACTIVE; |
---|
[a923a82] | 1848 | |
---|
| 1849 | rtems_interrupt_enable (level); |
---|
| 1850 | |
---|
| 1851 | return RTEMS_SUCCESSFUL; |
---|
| 1852 | } |
---|
| 1853 | |
---|
| 1854 | /* |
---|
| 1855 | * rtems_capture_tick_time |
---|
| 1856 | * |
---|
| 1857 | * DESCRIPTION: |
---|
| 1858 | * |
---|
| 1859 | * This function returns the tick period in nano-seconds. |
---|
| 1860 | */ |
---|
[aed742c] | 1861 | uint32_t |
---|
[347a3fe] | 1862 | rtems_capture_tick_time (void) |
---|
[a923a82] | 1863 | { |
---|
| 1864 | return capture_tick_period; |
---|
| 1865 | } |
---|
| 1866 | |
---|
| 1867 | /* |
---|
| 1868 | * rtems_capture_event_text |
---|
| 1869 | * |
---|
| 1870 | * DESCRIPTION: |
---|
| 1871 | * |
---|
| 1872 | * This function returns a string for an event based on the bit in the |
---|
| 1873 | * event. The functions takes the bit offset as a number not the bit |
---|
| 1874 | * set in a bit map. |
---|
| 1875 | */ |
---|
| 1876 | const char* |
---|
| 1877 | rtems_capture_event_text (int event) |
---|
| 1878 | { |
---|
| 1879 | if ((event < RTEMS_CAPTURE_EVENT_START) || (event > RTEMS_CAPTURE_EVENT_END)) |
---|
| 1880 | return "invalid event id"; |
---|
| 1881 | return capture_event_text[event - RTEMS_CAPTURE_EVENT_START]; |
---|
| 1882 | } |
---|
| 1883 | |
---|
| 1884 | /* |
---|
| 1885 | * rtems_capture_get_task_list |
---|
| 1886 | * |
---|
| 1887 | * DESCRIPTION: |
---|
| 1888 | * |
---|
| 1889 | * This function returns the head of the list of tasks that the |
---|
| 1890 | * capture engine has detected. |
---|
| 1891 | */ |
---|
| 1892 | rtems_capture_task_t* |
---|
[347a3fe] | 1893 | rtems_capture_get_task_list (void) |
---|
[a923a82] | 1894 | { |
---|
| 1895 | return capture_tasks; |
---|
| 1896 | } |
---|
| 1897 | |
---|
| 1898 | /* |
---|
| 1899 | * rtems_capture_task_stack_usage |
---|
| 1900 | * |
---|
| 1901 | * DESCRIPTION: |
---|
| 1902 | * |
---|
| 1903 | * This function updates the stack usage. The task control block |
---|
| 1904 | * is updated. |
---|
| 1905 | */ |
---|
[aed742c] | 1906 | uint32_t |
---|
[a923a82] | 1907 | rtems_capture_task_stack_usage (rtems_capture_task_t* task) |
---|
| 1908 | { |
---|
| 1909 | if (task->tcb) |
---|
| 1910 | { |
---|
[1374fd3] | 1911 | uint32_t* st; |
---|
| 1912 | uint32_t* s; |
---|
[a923a82] | 1913 | |
---|
| 1914 | /* |
---|
| 1915 | * @todo: Assumes all stacks move the same way. |
---|
| 1916 | */ |
---|
| 1917 | st = task->tcb->Start.Initial_stack.area + task->stack_size; |
---|
| 1918 | s = task->tcb->Start.Initial_stack.area; |
---|
| 1919 | |
---|
| 1920 | while (s < st) |
---|
| 1921 | { |
---|
| 1922 | if (*s != 0xdeaddead) |
---|
| 1923 | break; |
---|
| 1924 | s++; |
---|
| 1925 | } |
---|
| 1926 | |
---|
| 1927 | task->stack_clean = |
---|
[1374fd3] | 1928 | s - (uint32_t*) task->tcb->Start.Initial_stack.area; |
---|
[a923a82] | 1929 | } |
---|
| 1930 | |
---|
| 1931 | return task->stack_clean; |
---|
| 1932 | } |
---|
| 1933 | |
---|
| 1934 | /* |
---|
| 1935 | * rtems_capture_get_control_list |
---|
| 1936 | * |
---|
| 1937 | * DESCRIPTION: |
---|
| 1938 | * |
---|
| 1939 | * This function returns the head of the list of control in the |
---|
| 1940 | * capture engine. |
---|
| 1941 | */ |
---|
| 1942 | rtems_capture_control_t* |
---|
[347a3fe] | 1943 | rtems_capture_get_control_list (void) |
---|
[a923a82] | 1944 | { |
---|
| 1945 | return capture_controls; |
---|
| 1946 | } |
---|