------------------------------------------------------------------------------ -- -- -- 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. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ 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;