gcc/ada/s-tasdeb.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                 GNU ADA 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) 1997-2002, 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,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, 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
  42    ------------------------------------------
  43    -- Application-level debugging routines --
  44    ------------------------------------------
  45
  46    procedure List_Tasks;
  47    --  Print a list of all the known Ada tasks with abbreviated state
  48    --  information, one-per-line, to the standard error file.
  49
  50    procedure Print_Current_Task;
  51    --  Write information about current task, in hexadecimal, as one line, to
  52    --  the standard error file.
  53
  54    procedure Print_Task_Info (T : Task_ID);
  55    --  Similar to Print_Current_Task, for a given task.
  56
  57    procedure Set_User_State (Value : Long_Integer);
  58    --  Set user state value in the current task.
  59    --  This state will be displayed when calling List_Tasks or
  60    --  Print_Current_Task. It is useful for setting task specific state.
  61
  62    function Get_User_State return Long_Integer;
  63    --  Return the user state for the current task.
  64
  65    -------------------------
  66    -- General GDB support --
  67    -------------------------
  68
  69    Known_Tasks : array (0 .. 999) of Task_ID;
  70    --  Global array of tasks read by gdb, and updated by
  71    --  Create_Task and Finalize_TCB
  72
  73    ----------------------------------
  74    -- VxWorks specific GDB support --
  75    ----------------------------------
  76
  77    --  Although the following routines are implemented in a target independent
  78    --  manner, only VxWorks currently uses them.
  79
  80    procedure Task_Creation_Hook (Thread : OS_Interface.Thread_Id);
  81    --  This procedure is used to notify GDB of task's creation.
  82    --  It must be called by the task's creator.
  83
  84    procedure Task_Termination_Hook;
  85    --  This procedure is used to notify GDB of task's termination.
  86
  87    procedure Suspend_All_Tasks (Thread_Self : OS_Interface.Thread_Id);
  88    --  Suspend all the tasks except the one whose associated thread is
  89    --  Thread_Self by traversing All_Tasks_Lists and calling
  90    --  System.Task_Primitives.Operations.Suspend_Task.
  91
  92    procedure Resume_All_Tasks (Thread_Self : OS_Interface.Thread_Id);
  93    --  Resume all the tasks except the one whose associated thread is
  94    --  Thread_Self by traversing All_Tasks_Lists and calling
  95    --  System.Task_Primitives.Operations.Continue_Task.
  96
  97    -------------------------------
  98    -- Run-time tracing routines --
  99    -------------------------------
 100
 101    procedure Trace
 102      (Self_Id  : Task_ID;
 103       Msg      : String;
 104       Flag     : Character;
 105       Other_Id : Task_ID := null);
 106    --  If traces for Flag are enabled, display on Standard_Error a given
 107    --  message for the current task. Other_Id is an optional second task id
 108    --  to display.
 109
 110    procedure Set_Trace
 111      (Flag  : Character;
 112       Value : Boolean := True);
 113    --  Enable or disable tracing for Flag.
 114    --  By default, flags in the range 'A' .. 'Z' are disabled, others are
 115    --  enabled.
 116
 117 end System.Tasking.Debug;