80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
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/* Implement tasking-related runtime actions for CHILL.
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Copyright (C) 1992,1993 Free Software Foundation, Inc.
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Author: Wilfried Moser
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "rtltypes.h"
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#include "rts.h"
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/*
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* function __queue_length
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*
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* parameters:
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* buf_ev Buffer or event location
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* is_event 0 .. buf_ev is a buffer location
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* 1 .. buf_ev is an event location
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*
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* returns:
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* int number of delayed processeson an event location
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* or number of send delayed processes on a buffer
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*
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* exceptions:
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* none
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*
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* abstract:
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* implements the QUEUE_LENGTH built-in.
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*
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*/
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int
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__queue_length (buf_ev, is_event)
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void *buf_ev;
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int is_event;
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{
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int retval = 0;
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/* if buf_ev == 0 then we don't have anything */
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if (buf_ev == 0)
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return 0;
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if (is_event)
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{
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/* process an event queue */
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Event_Queue *ev = buf_ev;
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while (ev)
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{
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retval++;
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ev = ev->forward;
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}
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}
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else
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{
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/* process a buffer queue */
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Buffer_Queue *bq = buf_ev;
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Buffer_Send_Queue *bsq = bq->sendqueue;
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while (bsq)
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{
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retval++;
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bsq = bsq->forward;
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}
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}
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return retval;
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}
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