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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
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4 -- --
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5 -- S Y S T E M . T A S K I N G . D E B U G --
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6 -- --
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7 -- S p e c --
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8 -- --
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131
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9 -- Copyright (C) 1997-2018, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- GNARL is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNARL was developed by the GNARL team at Florida State University. --
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28 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 -- This package encapsulates all direct interfaces to task debugging services
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33 -- that are needed by gdb with gnat mode.
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34
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35 with System.Tasking;
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36 with System.OS_Interface;
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37
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38 package System.Tasking.Debug is
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39 pragma Preelaborate;
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40
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41 ------------------------------------------
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42 -- Application-level debugging routines --
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43 ------------------------------------------
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44
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45 procedure List_Tasks;
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46 -- Print a list of all the known Ada tasks with abbreviated state
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47 -- information, one-per-line, to the standard error file.
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48
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49 procedure Print_Current_Task;
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50 -- Write information about current task, in hexadecimal, as one line, to
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51 -- the standard error file.
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52
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53 procedure Print_Task_Info (T : Task_Id);
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54 -- Similar to Print_Current_Task, for a given task
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55
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56 procedure Set_User_State (Value : Long_Integer);
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57 -- Set user state value in the current task. This state will be displayed
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58 -- when calling List_Tasks or Print_Current_Task. It is useful for setting
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59 -- task specific state.
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60
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61 function Get_User_State return Long_Integer;
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62 -- Return the user state for the current task
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63
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64 -------------------------
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65 -- General GDB support --
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66 -------------------------
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67
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68 Known_Tasks : array (0 .. 999) of Task_Id := (others => null);
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69 -- Global array of tasks read by gdb, and updated by Create_Task and
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70 -- Finalize_TCB
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71
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72 Debug_Event_Activating : constant := 1;
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73 Debug_Event_Run : constant := 2;
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74 Debug_Event_Suspended : constant := 3;
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75 Debug_Event_Preempted : constant := 4;
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76 Debug_Event_Terminated : constant := 5;
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77 Debug_Event_Abort_Terminated : constant := 6;
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78 Debug_Event_Exception_Terminated : constant := 7;
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79 Debug_Event_Rendezvous_Exception : constant := 8;
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80 Debug_Event_Handled : constant := 9;
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81 Debug_Event_Dependents_Exception : constant := 10;
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82 Debug_Event_Handled_Others : constant := 11;
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83
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84 subtype Event_Kind_Type is Positive range 1 .. 11;
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85 -- Event kinds currently defined for debugging, used globally
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86 -- below and on a per task basis.
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87
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88 procedure Signal_Debug_Event
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89 (Event_Kind : Event_Kind_Type;
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90 Task_Value : Task_Id);
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91
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92 ----------------------------------
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93 -- VxWorks specific GDB support --
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94 ----------------------------------
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95
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96 -- Although the following routines are implemented in a target independent
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97 -- manner, only VxWorks currently uses them.
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98
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99 procedure Task_Creation_Hook (Thread : OS_Interface.Thread_Id);
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100 -- This procedure is used to notify GDB of task's creation. It must be
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101 -- called by the task's creator.
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102
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103 procedure Task_Termination_Hook;
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104 -- This procedure is used to notify GDB of task's termination
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105
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106 procedure Suspend_All_Tasks (Thread_Self : OS_Interface.Thread_Id);
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107 -- Suspend all the tasks except the one whose associated thread is
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108 -- Thread_Self by traversing All_Tasks_List and calling
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109 -- System.Task_Primitives.Operations.Suspend_Task.
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110
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111 procedure Resume_All_Tasks (Thread_Self : OS_Interface.Thread_Id);
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112 -- Resume all the tasks except the one whose associated thread is
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113 -- Thread_Self by traversing All_Tasks_List and calling
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114 -- System.Task_Primitives.Operations.Continue_Task.
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115
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116 procedure Stop_All_Tasks_Handler;
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117 -- Stop all the tasks by traversing All_Tasks_List and calling
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118 -- System.Task_Primitives.Operations.Stop_All_Task. This function
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119 -- can be used in an interrupt handler.
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120
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121 procedure Stop_All_Tasks;
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122 -- Stop all the tasks by traversing All_Tasks_List and calling
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123 -- System.Task_Primitives.Operations.Stop_Task.
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124
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125 procedure Continue_All_Tasks;
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126 -- Continue all the tasks by traversing All_Tasks_List and calling
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127 -- System.Task_Primitives.Operations.Continue_Task.
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128
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129 -------------------------------
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130 -- Run-time tracing routines --
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131 -------------------------------
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132
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133 procedure Trace
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134 (Self_Id : Task_Id;
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135 Msg : String;
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136 Flag : Character;
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137 Other_Id : Task_Id := null);
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138 -- If traces for Flag are enabled, display on Standard_Error a given
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139 -- message for the current task. Other_Id is an optional second task id
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140 -- to display.
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141
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142 procedure Set_Trace
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143 (Flag : Character;
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144 Value : Boolean := True);
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145 -- Enable or disable tracing for Flag. By default, flags in the range
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146 -- 'A' .. 'Z' are disabled, others are enabled.
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147
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148 ---------------------------------
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149 -- Hooks for Valgrind/Helgrind --
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150 ---------------------------------
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151
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152 procedure Master_Hook
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153 (Dependent : Task_Id;
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154 Parent : Task_Id;
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155 Master_Level : Integer);
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156 -- Indicate to Valgrind/Helgrind that the master of Dependent is
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157 -- Parent + Master_Level.
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158
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159 procedure Master_Completed_Hook
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160 (Self_ID : Task_Id;
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161 Master_Level : Integer);
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162 -- Indicate to Valgrind/Helgrind that Self_ID has completed the master
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163 -- Master_Level.
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164
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165 end System.Tasking.Debug;
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