gcc/ada/s-tasdeb.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                  GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                --
   4 --                                                                          --
   5 --                  S Y S T E M . T A S K I N G . D E B U G                 --
   6 --                                                                          --
   7 --                                  S p e c                                 --
   8 --                                                                          --
   9 --          Copyright (C) 1997-2007, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNARL was developed by the GNARL team at Florida State University.       --
  30 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  This package encapsulates all direct interfaces to task debugging services
  35 --  that are needed by gdb with gnat mode.
  36
  37 with System.Tasking;
  38 with System.OS_Interface;
  39
  40 package System.Tasking.Debug is
  41    pragma Preelaborate;
  42
  43    ------------------------------------------
  44    -- Application-level debugging routines --
  45    ------------------------------------------
  46
  47    procedure List_Tasks;
  48    --  Print a list of all the known Ada tasks with abbreviated state
  49    --  information, one-per-line, to the standard error file.
  50
  51    procedure Print_Current_Task;
  52    --  Write information about current task, in hexadecimal, as one line, to
  53    --  the standard error file.
  54
  55    procedure Print_Task_Info (T : Task_Id);
  56    --  Similar to Print_Current_Task, for a given task
  57
  58    procedure Set_User_State (Value : Long_Integer);
  59    --  Set user state value in the current task. This state will be displayed
  60    --  when calling List_Tasks or Print_Current_Task. It is useful for setting
  61    --  task specific state.
  62
  63    function Get_User_State return Long_Integer;
  64    --  Return the user state for the current task.
  65
  66    -------------------------
  67    -- General GDB support --
  68    -------------------------
  69
  70    Known_Tasks : array (0 .. 999) of Task_Id := (others => null);
  71    --  Global array of tasks read by gdb, and updated by Create_Task and
  72    --  Finalize_TCB
  73
  74    ----------------------------------
  75    -- VxWorks specific GDB support --
  76    ----------------------------------
  77
  78    --  Although the following routines are implemented in a target independent
  79    --  manner, only VxWorks currently uses them.
  80
  81    procedure Task_Creation_Hook (Thread : OS_Interface.Thread_Id);
  82    --  This procedure is used to notify GDB of task's creation. It must be
  83    --  called by the task's creator.
  84
  85    procedure Task_Termination_Hook;
  86    --  This procedure is used to notify GDB of task's termination
  87
  88    procedure Suspend_All_Tasks (Thread_Self : OS_Interface.Thread_Id);
  89    --  Suspend all the tasks except the one whose associated thread is
  90    --  Thread_Self by traversing All_Tasks_Lists and calling
  91    --  System.Task_Primitives.Operations.Suspend_Task.
  92
  93    procedure Resume_All_Tasks (Thread_Self : OS_Interface.Thread_Id);
  94    --  Resume all the tasks except the one whose associated thread is
  95    --  Thread_Self by traversing All_Tasks_Lists and calling
  96    --  System.Task_Primitives.Operations.Continue_Task.
  97
  98    procedure Stop_All_Tasks_Handler;
  99    --  Stop all the tasks by traversing All_Tasks_Lists and calling
 100    --  System.Task_Primitives.Operations.Stop_All_Task. This function
 101    --  can be used in an interrupt handler.
 102
 103    procedure Stop_All_Tasks;
 104    --  Stop all the tasks by traversing All_Tasks_Lists and calling
 105    --  System.Task_Primitives.Operations.Stop_Task.
 106
 107    procedure Continue_All_Tasks;
 108    --  Continue all the tasks by traversing All_Tasks_Lists and calling
 109    --  System.Task_Primitives.Operations.Continue_Task.
 110
 111    -------------------------------
 112    -- Run-time tracing routines --
 113    -------------------------------
 114
 115    procedure Trace
 116      (Self_Id  : Task_Id;
 117       Msg      : String;
 118       Flag     : Character;
 119       Other_Id : Task_Id := null);
 120    --  If traces for Flag are enabled, display on Standard_Error a given
 121    --  message for the current task. Other_Id is an optional second task id
 122    --  to display.
 123
 124    procedure Set_Trace
 125      (Flag  : Character;
 126       Value : Boolean := True);
 127    --  Enable or disable tracing for Flag. By default, flags in the range
 128    --  'A' .. 'Z' are disabled, others are enabled.
 129
 130 end System.Tasking.Debug;