gcc/libchill/printbuffer.c

/* Implement tasking-related runtime actions for CHILL.
   Copyright (C) 1992,1993 Free Software Foundation, Inc.
   Author: Wilfried Moser

This file is part of GNU CC.

GNU CC 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 2, or (at your option)
any later version.

GNU CC 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.

You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

#include <stdio.h>
#include "rtltypes.h"
#include "rts.h"

typedef char *(*fetch_names) (int number);
extern fetch_names	__RTS_FETCH_NAMES__;

/*
 * function print_instance
 *
 */

static char *print_instance (ins)
     INSTANCE ins;
{
  static char  buf[256];
  char *f;

  if (!__RTS_FETCH_NAMES__)
    f = 0;
  else
    f = (*__RTS_FETCH_NAMES__) (ins.ptype);
  if (!f)
    sprintf (buf, "[%u;%u]", ins.ptype, ins.pcopy);
  else
    sprintf (buf, "[%s;%u]", f, ins.pcopy);
  return buf;
}

/*
 * function __print_buffer
 *
 * parameters:
 *     buffer      buffer location
 *
 * returns:
 *     void
 *
 * exceptions:
 *     none
 *
 * abstract:
 *     Function is used for debugging purposes only to print a
 *     buffer queue
 */

void
__print_buffer (buffer, name)
     Buffer_Queue   **buffer;
     char            *name;
{
  Buffer_Queue      *bq;
  int                bsqcnt = 0, bwqcnt = 0;
  Buffer_Send_Queue *bsq;
  Buffer_Wait_Queue *bwq;

  if (name)
    printf ("Buffer %s:\n", name);
  else
    printf ("Buffer at address H'%X:\n", buffer);

  memcpy (&bq, buffer, sizeof (Buffer_Queue *));
  if (bq == 0)
    {
      printf ("EMPTY\n");
      return;
    }

  bsq = bq->sendqueue;
  if (bsq != 0)
      printf ("Send Queue:\n");
  while (bsq)
    {
      printf (" %3d: ", ++bsqcnt);
      printf ("Process %s, ", print_instance (bsq->this));
      printf ("Priority %d", bsq->priority);
      if (bsq->is_delayed)
	printf (", Delayed");
      printf ("\n");
      bsq = bsq->forward;
    }
  bwq = bq->waitqueue;
  if (bwq != 0)
      printf ("Wait Queue:\n");
  while (bwq)
    {
      printf (" %3d: ", ++bwqcnt);
      printf ("Process %s, ", print_instance (bwq->this));
      if (bwq->is_sent)
	printf (", Send by %s", print_instance (bwq->who_sent));
      printf ("\n");
      bwq = bwq->forward;
    }
  if (bsqcnt == 0 && bwqcnt == 0)
    printf ("EMPTY\n");
}