1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup RTEMSScoreProfiling |
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5 | * |
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6 | * @brief Profiling Support API |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2014 embedded brains GmbH. All rights reserved. |
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11 | * |
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12 | * embedded brains GmbH |
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13 | * Dornierstr. 4 |
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14 | * 82178 Puchheim |
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15 | * Germany |
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16 | * <rtems@embedded-brains.de> |
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17 | * |
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18 | * The license and distribution terms for this file may be |
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19 | * found in the file LICENSE in this distribution or at |
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20 | * http://www.rtems.org/license/LICENSE. |
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21 | */ |
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22 | |
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23 | #ifndef _RTEMS_SCORE_PROFILING |
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24 | #define _RTEMS_SCORE_PROFILING |
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25 | |
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26 | #include <rtems/score/percpu.h> |
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27 | #include <rtems/score/isrlock.h> |
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28 | |
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29 | #ifdef __cplusplus |
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30 | extern "C" { |
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31 | #endif /* __cplusplus */ |
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32 | |
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33 | /** |
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34 | * @defgroup RTEMSScoreProfiling Profiling Support |
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35 | * |
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36 | * @ingroup RTEMSScore |
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37 | * |
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38 | * @brief Profiling support. |
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39 | * |
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40 | * @{ |
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41 | */ |
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42 | |
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43 | static inline void _Profiling_Thread_dispatch_disable( |
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44 | Per_CPU_Control *cpu, |
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45 | uint32_t previous_thread_dispatch_disable_level |
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46 | ) |
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47 | { |
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48 | #if defined( RTEMS_PROFILING ) |
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49 | if ( previous_thread_dispatch_disable_level == 0 ) { |
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50 | Per_CPU_Stats *stats = &cpu->Stats; |
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51 | |
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52 | stats->thread_dispatch_disabled_instant = _CPU_Counter_read(); |
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53 | ++stats->thread_dispatch_disabled_count; |
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54 | } |
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55 | #else |
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56 | (void) cpu; |
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57 | (void) previous_thread_dispatch_disable_level; |
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58 | #endif |
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59 | } |
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60 | |
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61 | static inline void _Profiling_Thread_dispatch_disable_critical( |
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62 | Per_CPU_Control *cpu, |
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63 | uint32_t previous_thread_dispatch_disable_level, |
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64 | const ISR_lock_Context *lock_context |
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65 | ) |
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66 | { |
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67 | #if defined( RTEMS_PROFILING ) |
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68 | if ( previous_thread_dispatch_disable_level == 0 ) { |
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69 | Per_CPU_Stats *stats = &cpu->Stats; |
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70 | |
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71 | stats->thread_dispatch_disabled_instant = lock_context->ISR_disable_instant; |
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72 | ++stats->thread_dispatch_disabled_count; |
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73 | } |
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74 | #else |
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75 | (void) cpu; |
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76 | (void) previous_thread_dispatch_disable_level; |
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77 | (void) lock_context; |
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78 | #endif |
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79 | } |
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80 | |
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81 | static inline void _Profiling_Thread_dispatch_enable( |
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82 | Per_CPU_Control *cpu, |
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83 | uint32_t new_thread_dispatch_disable_level |
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84 | ) |
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85 | { |
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86 | #if defined( RTEMS_PROFILING ) |
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87 | if ( new_thread_dispatch_disable_level == 0 ) { |
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88 | Per_CPU_Stats *stats = &cpu->Stats; |
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89 | CPU_Counter_ticks now = _CPU_Counter_read(); |
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90 | CPU_Counter_ticks delta = _CPU_Counter_difference( |
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91 | now, |
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92 | stats->thread_dispatch_disabled_instant |
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93 | ); |
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94 | |
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95 | stats->total_thread_dispatch_disabled_time += delta; |
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96 | |
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97 | if ( stats->max_thread_dispatch_disabled_time < delta ) { |
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98 | stats->max_thread_dispatch_disabled_time = delta; |
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99 | } |
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100 | } |
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101 | #else |
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102 | (void) cpu; |
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103 | (void) new_thread_dispatch_disable_level; |
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104 | #endif |
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105 | } |
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106 | |
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107 | static inline void _Profiling_Update_max_interrupt_delay( |
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108 | Per_CPU_Control *cpu, |
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109 | CPU_Counter_ticks interrupt_delay |
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110 | ) |
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111 | { |
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112 | #if defined( RTEMS_PROFILING ) |
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113 | Per_CPU_Stats *stats = &cpu->Stats; |
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114 | |
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115 | if ( stats->max_interrupt_delay < interrupt_delay ) { |
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116 | stats->max_interrupt_delay = interrupt_delay; |
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117 | } |
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118 | #else |
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119 | (void) cpu; |
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120 | (void) interrupt_delay; |
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121 | #endif |
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122 | } |
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123 | |
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124 | /** |
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125 | * @brief Updates the interrupt profiling statistics. |
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126 | * |
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127 | * Must be called with the interrupt stack and before the thread dispatch |
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128 | * disable level is decremented. |
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129 | */ |
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130 | void _Profiling_Outer_most_interrupt_entry_and_exit( |
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131 | Per_CPU_Control *cpu, |
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132 | CPU_Counter_ticks interrupt_entry_instant, |
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133 | CPU_Counter_ticks interrupt_exit_instant |
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134 | ); |
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135 | |
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136 | /** @} */ |
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137 | |
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138 | #ifdef __cplusplus |
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139 | } |
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140 | #endif /* __cplusplus */ |
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141 | |
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142 | #endif /* _RTEMS_SCORE_PROFILING */ |
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