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   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
   4 --                                                                          --
   5 --            S Y S T E M . S T A C K _ U S A G E . T A S K I N G           --
   6 --                                                                          --
   7 --                                  S p e c                                 --
   8 --                                                                          --
   9 --           Copyright (C) 2009-2011, Free Software Foundation, Inc.        --
  10 --                                                                          --
  11 -- GNAT 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 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT 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.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNARL was developed by the GNARL team at Florida State University.       --
  28 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 --  This package provides exported subprograms to be called at debug time to
  33 --  measure stack usage at run-time.
  34
  35 --  Note: this package must be a child package of System.Stack_Usage to have
  36 --  visibility over its private part; it is however part of GNARL because it
  37 --  needs to access tasking features via System.Tasking.Debug and
  38 --  System.Task_Primitives.Operations;
  39
  40 package System.Stack_Usage.Tasking is
  41
  42    procedure Report_All_Tasks;
  43    --  Print the current stack usage of all tasks on stderr. Exported to be
  44    --  called also in debug mode.
  45
  46    pragma Export
  47      (C,
  48       Report_All_Tasks,
  49       "__gnat_tasks_stack_usage_report_all_tasks");
  50
  51    procedure Report_Current_Task;
  52    --  Print the stack usage of current task on stderr. Exported to be called
  53    --  also in debug mode.
  54
  55    pragma Export
  56      (C,
  57       Report_Current_Task,
  58       "__gnat_tasks_stack_usage_report_current_task");
  59
  60    subtype Stack_Usage_Result is System.Stack_Usage.Task_Result;
  61    --  This type is a descriptor for task stack usage result
  62
  63    type Stack_Usage_Result_Array is
  64      array (Positive range <>) of Stack_Usage_Result;
  65
  66    function Get_Current_Task_Usage return Stack_Usage_Result;
  67    --  Return the current stack usage for the invoking task
  68
  69    function Get_All_Tasks_Usage return Stack_Usage_Result_Array;
  70    --  Return an array containing the stack usage results for all tasks
  71
  72    procedure Print (Obj : Stack_Usage_Result);
  73    --  Print Obj on stderr
  74
  75 end System.Stack_Usage.Tasking;