| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT LIBRARY COMPONENTS -- |
| -- -- |
| -- G N A T . M O S T _ R E C E N T _ E X C E P T I O N -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- $Revision: 1.2 $ |
| -- -- |
| -- Copyright (C) 2000 Ada Core Technologies, 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). -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package provides routines for accessing the most recently raised |
| -- exception. This may be useful for certain logging activities. It may |
| -- also be useful for mimicing implementation dependent capabilities in |
| -- Ada 83 compilers, but see also GNAT.Current_Exceptions for this usage. |
| |
| with Ada.Exceptions; |
| package GNAT.Most_Recent_Exception is |
| |
| ----------------- |
| -- Subprograms -- |
| ----------------- |
| |
| function Occurrence |
| return Ada.Exceptions.Exception_Occurrence; |
| -- Returns the Exception_Occurrence for the most recently raised |
| -- exception in the current task. If no exception has been raised |
| -- in the current task prior to the call, returns Null_Occurrence. |
| |
| function Occurrence_Access |
| return Ada.Exceptions.Exception_Occurrence_Access; |
| -- Similar to the above, but returns an access to the occurrence value. |
| -- This value is in a task specific location, and may be validly accessed |
| -- as long as no further exception is raised in the calling task. |
| |
| -- Note: unlike the routines in GNAT.Current_Exception, these functions |
| -- access the most recently raised exception, regardless of where they |
| -- are called. Consider the following example: |
| |
| -- exception |
| -- when Constraint_Error => |
| -- begin |
| -- ... |
| -- exception |
| -- when Tasking_Error => ... |
| -- end; |
| -- |
| -- -- Assuming a Tasking_Error was raised in the inner block, |
| -- -- a call to GNAT.Most_Recent_Exception.Occurrence will |
| -- -- return information about this Tasking_Error exception, |
| -- -- not about the Constraint_Error exception being handled |
| -- -- by the current handler code. |
| |
| |
| end GNAT.Most_Recent_Exception; |
