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(* RTint.def provides users of the COROUTINES library with the.
Copyright (C) 2009-2025 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. *)
DEFINITION MODULE RTint ;
(* Provides users of the COROUTINES library with the
ability to create interrupt sources based on
file descriptors and timeouts. *)
FROM SYSTEM IMPORT ADDRESS ;
TYPE
DispatchVector = PROCEDURE (CARDINAL, CARDINAL, ADDRESS) ;
(*
InitInputVector - returns an interrupt vector which is associated
with the file descriptor, fd.
*)
PROCEDURE InitInputVector (fd: INTEGER; pri: CARDINAL) : CARDINAL ;
(*
InitOutputVector - returns an interrupt vector which is associated
with the file descriptor, fd.
*)
PROCEDURE InitOutputVector (fd: INTEGER; pri: CARDINAL) : CARDINAL ;
(*
InitTimeVector - returns an interrupt vector associated with
the relative time.
*)
PROCEDURE InitTimeVector (micro, secs: CARDINAL; pri: CARDINAL) : CARDINAL ;
(*
ReArmTimeVector - reprimes the vector, vec, to deliver an interrupt
at the new relative time.
*)
PROCEDURE ReArmTimeVector (vec: CARDINAL; micro, secs: CARDINAL) ;
(*
GetTimeVector - assigns, micro, and, secs, with the remaining
time before this interrupt will expire.
This value is only updated when a Listen
occurs.
*)
PROCEDURE GetTimeVector (vec: CARDINAL; VAR micro, secs: CARDINAL) ;
(*
AttachVector - adds the pointer, p, to be associated with the interrupt
vector. It returns the previous value attached to this
vector.
*)
PROCEDURE AttachVector (vec: CARDINAL; ptr: ADDRESS) : ADDRESS ;
(*
IncludeVector - includes, vec, into the dispatcher list of
possible interrupt causes.
*)
PROCEDURE IncludeVector (vec: CARDINAL) ;
(*
ExcludeVector - excludes, vec, from the dispatcher list of
possible interrupt causes.
*)
PROCEDURE ExcludeVector (vec: CARDINAL) ;
(*
Listen - will either block indefinitely (until an interrupt)
or alteratively will test to see whether any interrupts
are pending.
If a pending interrupt was found then, call, is called
and then this procedure returns.
It only listens for interrupts > pri.
*)
PROCEDURE Listen (untilInterrupt: BOOLEAN;
call: DispatchVector;
pri: CARDINAL) ;
(*
Init - allows the user to force the initialize order.
*)
PROCEDURE Init ;
END RTint.
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