1/* Implement tasking-related runtime actions for CHILL. 2 Copyright (C) 1992,1993 Free Software Foundation, Inc. 3 Author: Wilfried Moser 4 5This file is part of GNU CC. 6 7GNU CC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU CC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU CC; see the file COPYING. If not, write to 19the Free Software Foundation, 59 Temple Place - Suite 330, 20Boston, MA 02111-1307, USA. */ 21 22/* As a special exception, if you link this library with other files, 23 some of which are compiled with GCC, to produce an executable, 24 this library does not by itself cause the resulting executable 25 to be covered by the GNU General Public License. 26 This exception does not however invalidate any other reasons why 27 the executable file might be covered by the GNU General Public License. */ 28 29#include "rtltypes.h" 30#include "rts.h" 31 32/* 33 * function __queue_length 34 * 35 * parameters: 36 * buf_ev Buffer or event location 37 * is_event 0 .. buf_ev is a buffer location 38 * 1 .. buf_ev is an event location 39 * 40 * returns: 41 * int number of delayed processeson an event location 42 * or number of send delayed processes on a buffer 43 * 44 * exceptions: 45 * none 46 * 47 * abstract: 48 * implements the QUEUE_LENGTH built-in. 49 * 50 */ 51 52int 53__queue_length (buf_ev, is_event) 54 void *buf_ev; 55 int is_event; 56{ 57 int retval = 0; 58 59 /* if buf_ev == 0 then we don't have anything */ 60 if (buf_ev == 0) 61 return 0; 62 63 if (is_event) 64 { 65 /* process an event queue */ 66 Event_Queue *ev = buf_ev; 67 68 while (ev) 69 { 70 retval++; 71 ev = ev->forward; 72 } 73 } 74 else 75 { 76 /* process a buffer queue */ 77 Buffer_Queue *bq = buf_ev; 78 Buffer_Send_Queue *bsq = bq->sendqueue; 79 80 while (bsq) 81 { 82 retval++; 83 bsq = bsq->forward; 84 } 85 } 86 return retval; 87} 88