1 | /* |
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2 | * SPDX-License-Identifier: BSD-2-Clause |
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3 | * |
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4 | * Copyright (C) 2018, 2019 embedded brains GmbH |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions |
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8 | * are met: |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * 2. Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * |
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15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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16 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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19 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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20 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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21 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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24 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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25 | * POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | |
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28 | /* |
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29 | * This file must be compatible to general purpose POSIX system, e.g. Linux, |
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30 | * FreeBSD. It may be used for utility programs. |
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31 | */ |
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32 | |
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33 | #ifndef _RTEMS_RECORDCLIENT_H |
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34 | #define _RTEMS_RECORDCLIENT_H |
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35 | |
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36 | #include "recorddata.h" |
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37 | |
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38 | #include <stddef.h> |
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39 | |
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40 | #ifdef __cplusplus |
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41 | extern "C" { |
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42 | #endif /* __cplusplus */ |
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43 | |
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44 | /** |
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45 | * @addtogroup RTEMSRecord |
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46 | * |
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47 | * @{ |
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48 | */ |
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49 | |
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50 | #define RTEMS_RECORD_CLIENT_MAXIMUM_CPU_COUNT 32 |
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51 | |
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52 | typedef enum { |
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53 | RTEMS_RECORD_CLIENT_SUCCESS, |
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54 | RTEMS_RECORD_CLIENT_ERROR_INVALID_MAGIC, |
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55 | RTEMS_RECORD_CLIENT_ERROR_UNKNOWN_FORMAT, |
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56 | RTEMS_RECORD_CLIENT_ERROR_UNSUPPORTED_VERSION, |
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57 | RTEMS_RECORD_CLIENT_ERROR_UNSUPPORTED_CPU |
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58 | } rtems_record_client_status; |
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59 | |
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60 | typedef rtems_record_client_status ( *rtems_record_client_handler )( |
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61 | uint32_t seconds, |
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62 | uint32_t nanoseconds, |
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63 | uint32_t cpu, |
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64 | rtems_record_event event, |
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65 | uint64_t data, |
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66 | void *arg |
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67 | ); |
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68 | |
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69 | typedef struct { |
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70 | struct { |
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71 | uint64_t bt; |
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72 | uint32_t time_at_bt; |
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73 | uint32_t time_last; |
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74 | uint32_t time_accumulated; |
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75 | } uptime; |
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76 | uint32_t tail[ 2 ]; |
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77 | uint32_t head[ 2 ]; |
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78 | size_t index; |
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79 | } rtems_record_client_per_cpu; |
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80 | |
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81 | typedef struct rtems_record_client_context { |
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82 | uint64_t to_bt_scaler; |
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83 | rtems_record_client_per_cpu per_cpu[ RTEMS_RECORD_CLIENT_MAXIMUM_CPU_COUNT ]; |
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84 | uint64_t data; |
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85 | uint32_t cpu; |
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86 | uint32_t event; |
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87 | uint32_t count; |
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88 | union { |
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89 | rtems_record_item_32 format_32; |
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90 | rtems_record_item_64 format_64; |
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91 | } item; |
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92 | size_t todo; |
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93 | void *pos; |
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94 | rtems_record_client_status ( *consume )( |
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95 | struct rtems_record_client_context *, |
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96 | const void *, |
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97 | size_t |
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98 | ); |
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99 | rtems_record_client_handler handler; |
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100 | void *handler_arg; |
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101 | uint32_t header[ 2 ]; |
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102 | } rtems_record_client_context; |
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103 | |
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104 | /** |
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105 | * @brief Initializes a record client. |
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106 | * |
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107 | * The record client consumes a record item stream produces by the record |
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108 | * server. |
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109 | * |
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110 | * @param ctx The record client context to initialize. |
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111 | * @param handler The handler is invoked for each received record item. |
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112 | * @param arg The handler argument. |
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113 | */ |
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114 | void rtems_record_client_init( |
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115 | rtems_record_client_context *ctx, |
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116 | rtems_record_client_handler handler, |
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117 | void *arg |
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118 | ); |
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119 | |
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120 | /** |
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121 | * @brief Runs the record client to consume new stream data. |
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122 | * |
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123 | * @param ctx The record client context. |
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124 | * @param buf The buffer with new stream data. |
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125 | * @param n The size of the buffer. |
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126 | */ |
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127 | rtems_record_client_status rtems_record_client_run( |
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128 | rtems_record_client_context *ctx, |
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129 | const void *buf, |
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130 | size_t n |
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131 | ); |
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132 | |
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133 | /** @} */ |
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134 | |
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135 | #ifdef __cplusplus |
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136 | } |
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137 | #endif /* __cplusplus */ |
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138 | |
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139 | #endif /* _RTEMS_RECORDCLIENT_H */ |
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