------------------------------------------------------------------------------ -- -- -- 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 -- -- -- -- -- -- 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;