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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- G N A T . E X C E P T I O N _ A C T I O N S --
-- --
-- B o d y --
-- --
-- Copyright (C) 2002-2005, 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, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, 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 Ada.Unchecked_Conversion;
with System;
with System.Soft_Links; use System.Soft_Links;
with System.Standard_Library; use System.Standard_Library;
with System.Exception_Table; use System.Exception_Table;
package body GNAT.Exception_Actions is
Global_Action : Exception_Action;
pragma Import (C, Global_Action, "__gnat_exception_actions_global_action");
-- Imported from Ada.Exceptions. Any change in the external name needs to
-- be coordinated with a-except.adb
Raise_Hook_Initialized : Boolean;
pragma Import
(Ada, Raise_Hook_Initialized, "__gnat_exception_actions_initialized");
function To_Raise_Action is new Ada.Unchecked_Conversion
(Exception_Action, Raise_Action);
-- ??? Would be nice to have this in System.Standard_Library
function To_Data is new Ada.Unchecked_Conversion
(Exception_Id, Exception_Data_Ptr);
function To_Id is new Ada.Unchecked_Conversion
(Exception_Data_Ptr, Exception_Id);
----------------------------
-- Register_Global_Action --
----------------------------
procedure Register_Global_Action (Action : Exception_Action) is
begin
Lock_Task.all;
Global_Action := Action;
Unlock_Task.all;
end Register_Global_Action;
------------------------
-- Register_Id_Action --
------------------------
procedure Register_Id_Action
(Id : Exception_Id;
Action : Exception_Action)
is
begin
if Id = Null_Id then
raise Program_Error;
end if;
Lock_Task.all;
To_Data (Id).Raise_Hook := To_Raise_Action (Action);
Raise_Hook_Initialized := True;
Unlock_Task.all;
end Register_Id_Action;
---------------
-- Core_Dump --
---------------
procedure Core_Dump (Occurrence : Exception_Occurrence) is separate;
----------------
-- Name_To_Id --
----------------
function Name_To_Id (Name : String) return Exception_Id is
begin
return To_Id (Internal_Exception (Name, False));
end Name_To_Id;
---------------------------------
-- Registered_Exceptions_Count --
---------------------------------
function Registered_Exceptions_Count return Natural renames
System.Exception_Table.Registered_Exceptions_Count;
-------------------------------
-- Get_Registered_Exceptions --
-------------------------------
-- This subprogram isn't an iterator to avoid concurrency problems,
-- since the exceptions are registered dynamically. Since we have to lock
-- the runtime while computing this array, this means that any callback in
-- an active iterator would be unable to access the runtime.
procedure Get_Registered_Exceptions
(List : out Exception_Id_Array;
Last : out Integer)
is
Ids : Exception_Data_Array (List'Range);
begin
Get_Registered_Exceptions (Ids, Last);
for L in List'First .. Last loop
List (L) := To_Id (Ids (L));
end loop;
end Get_Registered_Exceptions;
end GNAT.Exception_Actions;
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