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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- S Y S T E M . S T A C K _ U S A G E . T A S K I N G --
-- --
-- B o d y --
-- --
-- Copyright (C) 2009-2011, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. --
-- Extensive contributions were provided by Ada Core Technologies, Inc. --
-- --
------------------------------------------------------------------------------
with System.Stack_Usage;
-- This is why this package is part of GNARL:
with System.Tasking.Debug;
with System.Task_Primitives.Operations;
with System.IO;
package body System.Stack_Usage.Tasking is
use System.IO;
procedure Report_For_Task (Id : System.Tasking.Task_Id);
-- A generic procedure calculating stack usage for a given task
procedure Compute_All_Tasks;
-- Compute the stack usage for all tasks and saves it in
-- System.Stack_Usage.Result_Array
procedure Compute_Current_Task;
-- Compute the stack usage for a given task and saves it in the precise
-- slot in System.Stack_Usage.Result_Array;
procedure Report_Impl (All_Tasks : Boolean; Do_Print : Boolean);
-- Report the stack usage of either all tasks (All_Tasks = True) or of the
-- current task (All_Task = False). If Print is True, then results are
-- printed on stderr
procedure Convert
(TS : System.Stack_Usage.Task_Result;
Res : out Stack_Usage_Result);
-- Convert an object of type System.Stack_Usage in a Stack_Usage_Result
-------------
-- Convert --
-------------
procedure Convert
(TS : System.Stack_Usage.Task_Result;
Res : out Stack_Usage_Result) is
begin
Res := TS;
end Convert;
---------------------
-- Report_For_Task --
---------------------
procedure Report_For_Task (Id : System.Tasking.Task_Id) is
begin
System.Stack_Usage.Compute_Result (Id.Common.Analyzer);
System.Stack_Usage.Report_Result (Id.Common.Analyzer);
end Report_For_Task;
-----------------------
-- Compute_All_Tasks --
-----------------------
procedure Compute_All_Tasks is
Id : System.Tasking.Task_Id;
use type System.Tasking.Task_Id;
begin
if not System.Stack_Usage.Is_Enabled then
Put_Line ("Stack Usage not enabled: bind with -uNNN switch");
else
-- Loop over all tasks
for J in System.Tasking.Debug.Known_Tasks'First + 1
.. System.Tasking.Debug.Known_Tasks'Last
loop
Id := System.Tasking.Debug.Known_Tasks (J);
exit when Id = null;
-- Calculate the task usage for a given task
Report_For_Task (Id);
end loop;
end if;
end Compute_All_Tasks;
--------------------------
-- Compute_Current_Task --
--------------------------
procedure Compute_Current_Task is
begin
if not System.Stack_Usage.Is_Enabled then
Put_Line ("Stack Usage not enabled: bind with -uNNN switch");
else
-- The current task
Report_For_Task (System.Tasking.Self);
end if;
end Compute_Current_Task;
-----------------
-- Report_Impl --
-----------------
procedure Report_Impl (All_Tasks : Boolean; Do_Print : Boolean) is
begin
-- Lock the runtime
System.Task_Primitives.Operations.Lock_RTS;
-- Calculate results
if All_Tasks then
Compute_All_Tasks;
else
Compute_Current_Task;
end if;
-- Output results
if Do_Print then
System.Stack_Usage.Output_Results;
end if;
-- Unlock the runtime
System.Task_Primitives.Operations.Unlock_RTS;
end Report_Impl;
---------------------
-- Report_All_Task --
---------------------
procedure Report_All_Tasks is
begin
Report_Impl (True, True);
end Report_All_Tasks;
-------------------------
-- Report_Current_Task --
-------------------------
procedure Report_Current_Task is
Res : Stack_Usage_Result;
begin
Res := Get_Current_Task_Usage;
Print (Res);
end Report_Current_Task;
-------------------------
-- Get_All_Tasks_Usage --
-------------------------
function Get_All_Tasks_Usage return Stack_Usage_Result_Array is
Res : Stack_Usage_Result_Array
(1 .. System.Stack_Usage.Result_Array'Length);
begin
Report_Impl (True, False);
for J in Res'Range loop
Convert (System.Stack_Usage.Result_Array (J), Res (J));
end loop;
return Res;
end Get_All_Tasks_Usage;
----------------------------
-- Get_Current_Task_Usage --
----------------------------
function Get_Current_Task_Usage return Stack_Usage_Result is
Res : Stack_Usage_Result;
Original : System.Stack_Usage.Task_Result;
Found : Boolean := False;
begin
Report_Impl (False, False);
-- Look for the task info in System.Stack_Usage.Result_Array;
-- the search is based on task name
for T in System.Stack_Usage.Result_Array'Range loop
if System.Stack_Usage.Result_Array (T).Task_Name =
System.Tasking.Self.Common.Analyzer.Task_Name
then
Original := System.Stack_Usage.Result_Array (T);
Found := True;
exit;
end if;
end loop;
-- Be sure a task has been found
pragma Assert (Found);
Convert (Original, Res);
return Res;
end Get_Current_Task_Usage;
-----------
-- Print --
-----------
procedure Print (Obj : Stack_Usage_Result) is
Pos : Positive := Obj.Task_Name'Last;
begin
-- Simply trim the string containing the task name
for S in Obj.Task_Name'Range loop
if Obj.Task_Name (S) = ' ' then
Pos := S;
exit;
end if;
end loop;
declare
T_Name : constant String :=
Obj.Task_Name (Obj.Task_Name'First .. Pos);
begin
Put_Line
("| " & T_Name & " | " & Natural'Image (Obj.Stack_Size) &
Natural'Image (Obj.Value));
end;
end Print;
end System.Stack_Usage.Tasking;
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