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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- G N A T . D E B U G _ P O O L S --
-- --
-- S p e c --
-- --
-- --
-- Copyright (C) 1992-2001 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 2, 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
with System; use System;
with System.Storage_Elements; use System.Storage_Elements;
with System.Checked_Pools;
package GNAT.Debug_Pools is
-- The debug pool is used to track down memory corruption due to use of
-- deallocated memory or incorrect unchecked conversions. Allocation
-- strategy :
-- - allocation: . memory is normally allocated with malloc
-- . the allocated address is noted in a table
-- - deallocation: . memory is filled with "DEAD_BEEF" patterns
-- . memory is not freed
-- . exceptions are raised if the memory was not
-- allocated or was already deallocated
-- - dereference: . exceptions are raised if the memory was not
-- allocated or was already deallocated
Accessing_Not_Allocated_Storage : exception;
Accessing_Deallocated_Storage : exception;
Freeing_Not_Allocated_Storage : exception;
Freeing_Deallocated_Storage : exception;
type Debug_Pool is
new System.Checked_Pools.Checked_Pool with private;
procedure Allocate
(Pool : in out Debug_Pool;
Storage_Address : out Address;
Size_In_Storage_Elements : Storage_Count;
Alignment : Storage_Count);
procedure Deallocate
(Pool : in out Debug_Pool;
Storage_Address : Address;
Size_In_Storage_Elements : Storage_Count;
Alignment : Storage_Count);
function Storage_Size
(Pool : Debug_Pool)
return System.Storage_Elements.Storage_Count;
procedure Dereference
(Pool : in out Debug_Pool;
Storage_Address : System.Address;
Size_In_Storage_Elements : Storage_Count;
Alignment : Storage_Count);
generic
with procedure Put_Line (S : String);
procedure Print_Info (Pool : Debug_Pool);
-- Print out information about the High Water Mark, the current and
-- total number of bytes allocated and the total number of bytes
-- deallocated.
private
type Debug_Pool is new System.Checked_Pools.Checked_Pool with record
Allocated : Storage_Count := 0;
-- Total number of bytes allocated in this pool
Deallocated : Storage_Count := 0;
-- Total number of bytes deallocated in this pool
High_Water : Storage_Count := 0;
-- Maximum of during the time of Allocated - Deallocated
end record;
end GNAT.Debug_Pools;
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