| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS -- |
| -- -- |
| -- S Y S T E M . I N T E R R U P T _ M A N A G E M E N T -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- $Revision: 1.5 $ |
| -- -- |
| -- Copyright (C) 1991-2001, Florida State University -- |
| -- -- |
| -- GNARL 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. GNARL 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 GNARL; 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. -- |
| -- -- |
| -- GNARL was developed by the GNARL team at Florida State University. It is -- |
| -- now maintained by Ada Core Technologies Inc. in cooperation with Florida -- |
| -- State University (http://www.gnat.com). -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This is a SGI Pthread version of this package. |
| |
| -- PLEASE DO NOT add any dependences on other packages. |
| -- This package is designed to work with or without tasking support. |
| |
| -- Make a careful study of all signals available under the OS, |
| -- to see which need to be reserved, kept always unmasked, |
| -- or kept always unmasked. |
| -- Be on the lookout for special signals that |
| -- may be used by the thread library. |
| |
| with Interfaces.C; |
| -- used for int |
| |
| with System.OS_Interface; |
| -- used for various Constants, Signal and types |
| |
| package body System.Interrupt_Management is |
| |
| use System.OS_Interface; |
| |
| type Interrupt_List is array (Interrupt_ID range <>) of Interrupt_ID; |
| Exception_Interrupts : constant Interrupt_List := |
| (SIGTSTP, SIGILL, SIGTRAP, SIGEMT, SIGFPE, SIGBUS, SIGSTOP, SIGKILL, |
| SIGSEGV, SIGSYS, SIGXCPU, SIGXFSZ, SIGPROF, SIGPTINTR, SIGPTRESCHED, |
| SIGABRT, SIGPIPE); |
| |
| --------------------------- |
| -- Initialize_Interrupts -- |
| --------------------------- |
| |
| -- Nothing needs to be done on this platform. |
| |
| procedure Initialize_Interrupts is |
| begin |
| null; |
| end Initialize_Interrupts; |
| |
| Unreserve_All_Interrupts : Interfaces.C.int; |
| pragma Import |
| (C, Unreserve_All_Interrupts, "__gl_unreserve_all_interrupts"); |
| |
| use type Interfaces.C.int; |
| |
| begin |
| Abort_Task_Interrupt := SIGABRT; |
| -- Change this if you want to use another signal for task abort. |
| -- SIGTERM might be a good one. |
| |
| for I in Exception_Interrupts'Range loop |
| Keep_Unmasked (Exception_Interrupts (I)) := True; |
| end loop; |
| |
| -- By keeping SIGINT unmasked, allow the user to do a Ctrl-C, but in the |
| -- same time, disable the ability of handling this signal via |
| -- Ada.Interrupts. |
| -- The pragma Unreserve_All_Interrupts let the user the ability to |
| -- change this behavior. |
| |
| if Unreserve_All_Interrupts = 0 then |
| Keep_Unmasked (SIGINT) := True; |
| end if; |
| |
| Keep_Unmasked (Abort_Task_Interrupt) := True; |
| |
| Reserve := Keep_Unmasked or Keep_Masked; |
| Reserve (0) := True; |
| end System.Interrupt_Management; |
