summaryrefslogtreecommitdiffstats
path: root/libiberty/mpw.c
blob: ca3ae412d25c1612f33138a47d7737a88ddcf39f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
/* MPW-Unix compatibility library.
   Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.

This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

Libiberty 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
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with libiberty; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* This should only be compiled and linked under MPW. */

#include "mpw.h"

#include <stdlib.h>

#ifndef USE_MW_HEADERS
#include <sys/time.h>
#include <sys/resource.h>
#endif

#include <Types.h>
#include <Files.h>

#include <Timer.h>

/* Initialize to 0 at first, then set to errno_max() later.  */

int sys_nerr = 0;

/* Debug flag for pathname hacking.  Set this to one and rebuild. */

int DebugPI = -1;

void
mpwify_filename(char *unixname, char *macname)
{
  int i, j;

  /* (should truncate 255 chars from end of name, not beginning) */
  if (strlen (unixname) > 255)
    {
      fprintf (stderr, "Pathname \"%s\" is too long for Macs, truncating\n",
	       unixname);
    }
  j = 0;
  /* If you're going to end up with one or more colons in the middle of a
     path after an all-Unix relative path is translated, you must add a
     colon on the front, so that the first component is not thought to be
     a disk name.  */
  if (unixname[0] != '/' && ! strchr (unixname, ':') && strchr (unixname, '/'))
    {
      macname[j++] = ':';
    }
  for (i = 0; unixname[i] != '\0' && i < 255; ++i)
    {
      if (i == 0 && unixname[i] == '/')
	{
	  if (strncmp (unixname, "/tmp/", 5) == 0)
	    {
	      /* A temporary name, make a more Mac-flavored tmpname. */
	      /* A better choice would be {Boot}Trash:foo, but
		 that would require being able to identify the
		 boot disk's and trashcan's name.  Another option
		 would be to have an env var, so user can point it
		 at a ramdisk. */
	      macname[j++] = ':';
	      macname[j++] = 't';
	      macname[j++] = 'm';
	      macname[j++] = 'p';
	      macname[j++] = '_';
	      i += 4;
	    }
	  else
	    {
	      /* Don't copy the leading slash. */
	    }
	}
      else if (unixname[i] == ':' && unixname[i+1] == '/')
	{
	  macname[j++] = ':';
	  i += 1;
	}
      else if (unixname[i] == '.' && unixname[i+1] == '/')
	{
	  macname[j++] = ':';
	  i += 1;
	}
      else if (unixname[i] == '.' && unixname[i+1] == '.' && unixname[i+2] == '/')
	{
	  macname[j++] = ':';
	  macname[j++] = ':';
	  i += 2;
	}
      else if (unixname[i] == '/')
	{
	  macname[j++] = ':';
	}
      else
	{
	  macname[j++] = unixname[i];
	}
    }
  macname[j] = '\0';
  /* Allow for getting the debug flag from an env var; quite useful. */
  if (DebugPI < 0)
    DebugPI = (*(getenv ("DEBUG_PATHNAMES")) == '1' ? 1 : 0);
  if (DebugPI)
    {
      fprintf (stderr, "# Made \"%s\"\n", unixname);
      fprintf (stderr, "# into \"%s\"\n", macname);
    }
}

/* MPW-flavored basename finder. */

char *
mpw_basename (name)
  char *name;
{
  char *base = name;

  while (*name)
    {
      if (*name++ == ':')
	{
	  base = name;
	}
    }
  return base;
}

/* Mixed MPW/Unix basename finder.  This can be led astray by
   filenames with slashes in them and come up with a basename that
   either corresponds to no file or (worse) to some other file, so
   should only be tried if other methods of finding a file via a
   basename have failed.  */

char *
mpw_mixed_basename (name)
  char *name;
{
  char *base = name;

  while (*name)
    {
      if (*name == '/' || *name == ':')
	{
	  base = name + 1;
	}
      ++name;
    }
  return base;
}

/* This function is fopen() modified to create files that are type TEXT
   or 'BIN ', and always of type 'MPS '.  */

FILE *
mpw_fopen (char *name, char *mode)
{
#undef fopen
  int errnum;
  FILE *fp;
  char tmpname[256];

  mpwify_filename (name, tmpname);
  PROGRESS (1);
  fp = fopen (tmpname, mode);
  errnum = errno;

  /* If writing, need to set type and creator usefully. */
  if (strchr (mode, 'w'))
    {
      char *pname = (char *) malloc (strlen (tmpname) + 2);
      OSErr e;
      struct FInfo fi;

      pname[0] = strlen (tmpname);
      strcpy (pname+1, tmpname);
	
      e = GetFInfo ((ConstStr255Param) pname, 0, &fi);
      /* should do spiffier error handling */
      if (e != 0)
	fprintf(stderr, "GetFInfo returns %d\n", e);
      if (strchr (mode, 'b'))
	{
	  fi.fdType = (OSType) 'BIN ';
	}
      else
	{
	  fi.fdType = (OSType) 'TEXT';
	}
      fi.fdCreator = (OSType) 'MPS ';
      e = SetFInfo ((ConstStr255Param) pname, 0, &fi);
      if (e != 0)
	fprintf(stderr, "SetFInfo returns %d\n", e);
      free (pname);
    }
  if (fp == NULL)
    errno = errnum;
  return fp;
}

/* This is a version of fseek() modified to fill the file with zeros
   if seeking past the end of it.  */

#define ZEROBLKSIZE 4096

char zeros[ZEROBLKSIZE];

int
mpw_fseek (FILE *fp, int offset, int whence)
{
#undef fseek
  int cursize, numleft;

  PROGRESS (1);
  if (whence == SEEK_SET)
    {
      fseek (fp, 0, SEEK_END);
      cursize = ftell (fp);
      if (offset > cursize)
	{
	  numleft = offset - cursize;
	  while (numleft > ZEROBLKSIZE)
	    {
	      /* This might fail, should check for that. */
	      PROGRESS (1);
	      fwrite (zeros, 1, ZEROBLKSIZE, fp);
	      numleft -= ZEROBLKSIZE;
	    }
	  PROGRESS (1);
	  fwrite (zeros, 1, numleft, fp);
	  fflush (fp);
	}
    }
  return fseek (fp, offset, whence);
}

int
mpw_fread (char *ptr, int size, int nitems, FILE *stream)
{
#undef fread
  int rslt;

  PROGRESS (1);
  rslt = fread (ptr, size, nitems, stream);
  PROGRESS (1);
  return rslt;
}

int
mpw_fwrite (char *ptr, int size, int nitems, FILE *stream)
{
#undef fwrite
  int rslt;

  PROGRESS (1);
  rslt = fwrite (ptr, size, nitems, stream);
  PROGRESS (1);
  return rslt;
}

int
link ()
{
  fprintf (stderr, "link not available!\n");
  mpw_abort ();
}

int
fork ()
{
  fprintf (stderr, "fork not available!\n");
  mpw_abort ();
}

int
vfork ()
{
  fprintf (stderr, "vfork not available!\n");
  mpw_abort ();
  return (-1);
}

int
pipe (int *fd)
{
  fprintf (stderr, "pipe not available!\n");
  mpw_abort ();
  return (-1);
}

#ifndef USE_MW_HEADERS
int
execvp (char *file, char **argv)
{
  fprintf (stderr, "execvp not available!\n");
  mpw_abort ();
  return (-1);
}

int
execv (char *path, char **argv)
{
  fprintf (stderr, "execv not available!\n");
  mpw_abort ();
  return (-1);
}
#endif

int
kill (int pid, int sig)
{
  fprintf (stderr, "kill not available!\n");
  mpw_abort ();
  return (-1);
}

int
wait (int *status)
{
  *status = 0;
  return 0;
}

#ifndef USE_MW_HEADERS
int
sleep (int seconds)
{
  unsigned long start_time, now;

  time (&start_time);

  while (1)
    {
      PROGRESS (1);
      time (&now);
      if (now > start_time + seconds)
	return 0;
    }
}
#endif

void
putenv (char *str)
{
  /* The GCC driver calls this to do things for collect2, but we
     don't care about collect2. */
}

int
chmod (char *path, int mode)
{
  /* Pretend it was all OK. */
  return 0;
}

#ifndef USE_MW_HEADERS
int
getuid ()
{
  /* One value is as good as another... */
  return 0;
}

int
getgid ()
{
  /* One value is as good as another... */
  return 0;
}
#endif

/* Instead of coredumping, which is not a normal Mac facility, we
   drop into Macsbug.  If we then "g" from Macsbug, the program will
   exit cleanly. */

void
mpw_abort ()
{
  /* Make sure no output still buffered up, then zap into MacsBug. */
  fflush(stdout);
  fflush(stderr);
  printf("## Abort! ##\n");
#ifdef MPW_SADE
  SysError(8005);
#else 
  Debugger();
#endif
  /* "g" in MacsBug will then cause a regular error exit. */
  exit (1);
}

/* Imitation getrusage based on the ANSI clock() function. */

int
getrusage (int who, struct rusage *rusage)
{
  int clk = clock ();

#if 0
  rusage->ru_utime.tv_sec = clk / CLOCKS_PER_SEC;
  rusage->ru_utime.tv_usec = ((clk * 1000) / CLOCKS_PER_SEC) * 1000;
  rusage->ru_stime.tv_sec = 0;
  rusage->ru_stime.tv_usec = 0;
#endif
}

int
sbrk ()
{
  return 0;
}

#ifndef USE_MW_HEADERS
int
isatty (int fd)
{
  return 0;
}

/* This is inherited from Timothy Murray's Posix library. */

#include "utime.h"

int
utime (char *filename, struct utimbuf *times)
{
  CInfoPBRec cipbr;
  HFileInfo *fpb = (HFileInfo *) &cipbr;
  DirInfo *dpb = (DirInfo *) &cipbr;
  unsigned char pname[256];
  short err;
  
  strcpy ((char *) pname, filename);
  c2pstr (pname);

  dpb->ioDrDirID = 0L;
  fpb->ioNamePtr = pname;
  fpb->ioVRefNum = 0;
  fpb->ioFDirIndex = 0;
  fpb->ioFVersNum = 0;
  err = PBGetCatInfo (&cipbr, 0);
  if (err != noErr) {
    errno = ENOENT;
    return -1;
  }
  dpb->ioDrDirID = 0L;
  fpb->ioFlMdDat = times->modtime;
  fpb->ioFlCrDat = times->actime;
  err = PBSetCatInfo (&cipbr, 0);
  if (err != noErr) {
    errno = EACCES;
    return -1;
  }
  return 0;
}

int
mkdir (char *path, int mode)
{
  errno = ENOSYS;
  return -1;
}

int
rmdir ()
{
  errno = ENOSYS;
  return -1;
}
#endif

chown ()
{
  errno = ENOSYS;
  return -1;
}

char *myenviron[] = {NULL};

char **environ = myenviron;

#ifndef USE_MW_HEADERS

/* Minimal 'stat' emulation: tells directories from files and
   gives length and mtime.

   Derived from code written by Guido van Rossum, CWI, Amsterdam
   and placed by him in the public domain.  */

extern int __uid, __gid;

int __uid = 0;
int __gid = 0;

/* Bits in ioFlAttrib: */
#define LOCKBIT	(1<<0)		/* File locked */
#define DIRBIT	(1<<4)		/* It's a directory */

/* Macified "stat" in which filename is given relative to a directory,
   specified by long DirID.  */

static int
_stat (char *name, long dirid, struct stat *buf)
{
  CInfoPBRec cipbr;
  HFileInfo *fpb = (HFileInfo*) &cipbr;
  DirInfo *dpb = (DirInfo*) &cipbr;
  Str255 pname;
  short err;

  /* Make a temp copy of the name and pascalize. */
  strcpy ((char *) pname, name);
  c2pstr (pname);
  
  cipbr.dirInfo.ioDrDirID = dirid;
  cipbr.hFileInfo.ioNamePtr = pname;
  cipbr.hFileInfo.ioVRefNum = 0;
  cipbr.hFileInfo.ioFDirIndex = 0;
  cipbr.hFileInfo.ioFVersNum = 0;
  err = PBGetCatInfo (&cipbr, 0);
  if (err != noErr)
    {
      errno = ENOENT;
      return -1;
    }
  /* Mac files are readable if they can be accessed at all. */
  buf->st_mode = 0444;
  /* Mark unlocked files as writeable. */
  if (!(fpb->ioFlAttrib & LOCKBIT))
    buf->st_mode |= 0222;
  if (fpb->ioFlAttrib & DIRBIT)
    {
      /* Mark directories as "executable". */
      buf->st_mode |= 0111 | S_IFDIR;
      buf->st_size = dpb->ioDrNmFls;
      buf->st_rsize = 0;
    }
  else
    {
      buf->st_mode |= S_IFREG;
      /* Mark apps as "executable". */
      if (fpb->ioFlFndrInfo.fdType == 'APPL')
	buf->st_mode |= 0111;
      /* Fill in the sizes of data and resource forks. */
      buf->st_size = fpb->ioFlLgLen;
      buf->st_rsize = fpb->ioFlRLgLen;
    }
  /* Fill in various times. */
  buf->st_atime = fpb->ioFlCrDat;
  buf->st_mtime = fpb->ioFlMdDat;
  buf->st_ctime = fpb->ioFlCrDat;
  /* Set up an imitation inode number. */
  buf->st_ino = (unsigned short) fpb->ioDirID;
  /* Set up an imitation device. */
  GetVRefNum (buf->st_ino, &buf->st_dev);
  buf->st_uid = __uid;
  buf->st_gid = __gid;
/*  buf->st_FlFndrInfo = fpb->ioFlFndrInfo;  */
  return 0;
}

/* stat() sets up an empty dirid. */

int
stat (char *path, struct stat *buf)
{
  long rslt, errnum;
  char tmpname[256];

  mpwify_filename (path, tmpname);
  if (DebugPI)
    fprintf (stderr, "# stat (%s, %x)", tmpname, buf);
  PROGRESS (1);
  rslt = _stat (tmpname, 0L, buf);
  errnum = errno;
  if (DebugPI)
    {
      fprintf (stderr, " -> %d", rslt);
      if (rslt != 0)
	fprintf (stderr, " (errno is %d)", errnum);
      fprintf (stderr, "\n");
      fflush (stderr);
    }
  if (rslt != 0)
    errno = errnum;
  return rslt;
}

int
fstat (int fd, struct stat *buf)
{
  FCBPBRec fcb;
  FILE *fp;
  Str255 pathname;
  long dirid = 0L, temp;
  long rslt, errnum;
  short err;

  if (DebugPI < 0)
    DebugPI = (*(getenv ("DEBUG_PATHNAMES")) == '1' ? 1 : 0);
  if (DebugPI)
    fprintf (stderr, "# fstat (%d, %x)", fd, buf);
  PROGRESS (1);
  pathname[0] = 0;
#ifdef FIOFNAME
  /* Use an MPW-specific ioctl to get the pathname associated with
     the file descriptor.  */
  ioctl (fd, FIOFNAME, (long *) pathname); 
#else
  you lose
#endif
  if (DebugPI)
    fprintf (stderr, " (name is %s)", pathname);
  dirid = 0L /* fcb.ioFCBParID */ ;
  rslt = _stat ((char *) pathname, dirid, buf);
  errnum = errno;
  if (DebugPI)
    {
      fprintf (stderr, " -> %d", rslt);
      if (rslt != 0)
	fprintf (stderr, " (errno is %d)", errnum);
      fprintf (stderr, "\n");
      fflush (stderr);
    }
  if (rslt != 0)
    errno = errnum;
  return rslt;
}

#endif /* n USE_MW_HEADERS */

chdir ()
{
  errno = ENOSYS;
  return (-1);
}

char *
getcwd (char *buf, int size)
{
  if (buf == NULL)
    buf = (char *) malloc (size);
  strcpy(buf, ":");
  return buf;
}

/* This should probably be more elaborate for MPW. */

char *
getpwd ()
{
  return ":";
}

int
mpw_open (char *filename, int arg2, int arg3)
{
#undef open
  int fd, errnum = 0;
  char tmpname[256];

  mpwify_filename (filename, tmpname);
  fd = open (tmpname, arg2);
  errnum = errno;

  if (DebugPI)
    {
      fprintf (stderr, "# open (%s, %d, %d)", tmpname, arg2, arg3);
      fprintf (stderr, " -> %d", fd);
      if (fd == -1)
	fprintf (stderr, " (errno is %d)", errnum);
      fprintf (stderr, "\n");
    }
  if (fd == -1)
    errno = errnum;
  return fd;
}

int
mpw_access (char *filename, unsigned int cmd)
{
#undef access

  int rslt, errnum = 0;
  struct stat st;
  char tmpname[256];

  mpwify_filename (filename, tmpname);
  if (cmd & R_OK || cmd & X_OK)
    {
      rslt = stat (tmpname, &st);
      errnum = errno;
      if (rslt >= 0)
	{
	  if ((((st.st_mode & 004) == 0) && (cmd & R_OK))
	      || (((st.st_mode & 002) == 0) && (cmd & W_OK))
	      || (((st.st_mode & 001) == 0) && (cmd & X_OK)))
	    {
	      rslt = -1;
	      errnum = EACCES;
	    }
	}
    }
  if (DebugPI)
    {
      fprintf (stderr, "# mpw_access (%s, %d)", tmpname, cmd);
      fprintf (stderr, " -> %d", rslt);
      if (rslt != 0)
	fprintf (stderr, " (errno is %d)", errnum);
      fprintf (stderr, "\n");
    }
  if (rslt != 0)
    errno = errnum;
  return rslt;
}

/* The MPW library creat() has no mode argument. */

int
mpw_creat (char *path, /* mode_t */ int mode)
{
#undef creat

#ifdef USE_MW_HEADERS
  return creat (path, mode);
#else
  return creat (path);
#endif
}

/* This is a hack to get control in an MPW tool before it crashes the
   machine.  */

mpw_special_init (name)
     char *name;
{
  if (strstr (name, "DEBUG"))
    DebugStr("\pat beginning of program");
}

static int current_umask;

int
umask(int mask)
{
  int oldmask = current_umask;

  current_umask = mask;
  return oldmask;
}

/* Cursor-spinning stuff that includes metering of spin rate and delays.  */

/* Nonzero when cursor spinning has been set up properly.  */

int cursor_inited;

/* Nonzero if spin should be measured and excessive delays reported.  */

int measure_spin;

/* Nonzero if spin histogram and rate data should be written out.  */

int dump_spin_data;

long warning_threshold = 400000;

long bucket_size = 1024;

long bucket_power = 10;

long numbuckets = 300;

int *delay_counts;

int overflow_count;

char *current_progress;

static UnsignedWide last_microseconds;

static char *last_spin_file = "";

static int last_spin_line;

void
warn_if_spin_delay (char *file, int line)
{
  long diff, ix;
  UnsignedWide now;

  Microseconds(&now);

  diff = now.lo - last_microseconds.lo;

  if (diff > warning_threshold)
    fprintf (stderr, "# %s: %ld.%06ld sec delay getting from %s:%d to %s:%d\n",
	     (current_progress ? current_progress : ""),
	     diff / 1000000, diff % 1000000,
	     last_spin_file, last_spin_line, file, line);
  if (dump_spin_data)
    {
      if (diff >= 0)
	{
	  ix = diff >> bucket_power;
	  if (ix >= 0 && ix < numbuckets && delay_counts != NULL)
	    ++delay_counts[ix];
	  else
	    ++overflow_count;
	}
      else
	fprintf (stderr, "raw diff is %ld (?)\n", diff);
    }
}

void
record_for_spin_delay (char *file, int line)
{
  Microseconds (&last_microseconds);
  last_spin_file = file;
  last_spin_line = line;
}

void
mpw_start_progress (char *str, int n, char *file, int line)
{
  int i;
  char *measure, *threshold;

  if (!cursor_inited)
    {
      InitCursorCtl (nil);
      cursor_inited = 1;
      record_for_spin_delay (file, line);
      measure = getenv ("MEASURE_SPIN");
      if (measure != NULL && measure[0] != '\0')
	{
	  measure_spin = 1;
	  if (strcmp (measure, "all") == 0)
	    dump_spin_data = 1;
	}
      threshold = getenv ("SPIN_WARN_THRESHOLD");
      if (threshold != NULL && threshold[0] != '\0')
	warning_threshold = atol (threshold);
      if (dump_spin_data)
	{
	  if (delay_counts == NULL)
	    delay_counts = (int *) malloc (numbuckets * sizeof (int));
	  for (i = 0; i < numbuckets; ++i)
	    delay_counts[i] = 0;
	  overflow_count = 0;
	}
    }
  current_progress = str;

  sys_nerr = errno_max ();

  mpw_special_init (str);
}

void
mpw_progress (int n)
{
  SpinCursor (32);
}

void
mpw_progress_measured (int n, char *file, int line)
{
  if (measure_spin)
    warn_if_spin_delay (file, line);
  SpinCursor (32);
  if (measure_spin)
    record_for_spin_delay (file, line);
}

void
mpw_end_progress (char *str, char *file, int line)
{
  long i, delay, count = 0, sum = 0, avgdelay, spinrate;
  long curpower = 0, curgroup = 0;

  /* Warn if it's been a while since the last spin.  */
  if (measure_spin)
    warn_if_spin_delay (file, line);

  /* Dump all the nonzero delay counts and an approximation of the delay.  */
  if (dump_spin_data && delay_counts != NULL)
    {
      for (i = 0; i < numbuckets; ++i)
	{
	  delay = (i + 1) * bucket_size;
	  sum += delay_counts[i] * (i + 1);
	  count += delay_counts[i];
	  if (delay <= (1 << curpower))
	    {
	      curgroup += delay_counts[i];
	    }
	  else
	    {
	      if (curgroup > 0)
		fprintf (stderr,
			 "# %s: %d delays between %ld.%06ld and %ld.%06ld sec\n",
			 (str ? str : ""),
			 curgroup,
			 (1 << curpower) / 1000000,
			 (1 << curpower) % 1000000,
			 (1 << (curpower + 1)) / 1000000,
			 (1 << (curpower + 1)) % 1000000);
	      ++curpower;
	      curgroup = 0;
	    }
	}
      if (count > 0)
	{
	  avgdelay = (sum * bucket_size) / count;
	  spinrate = 1000000 / avgdelay;
	  fprintf (stderr, "# %s: Average spin rate is %d times/sec\n",
		   (str ? str : ""), spinrate);
	}
    }
}

#ifdef PROGRESS_TEST

/* Test program.  */

main ()
{
  int i, j;
  double x = 1.0, y = 2.4;
  long start = Microseconds (), tm;  FIXME

  START_PROGRESS ("hi", 0);

  for (i = 0; i < 1000; ++i)
    {
      PROGRESS (1);

      for (j = 0; j < (i * 100); ++j)
	{
	  x += (x * y) / j;
	}
    }
  
  END_PROGRESS ("hi");
  
  tm = Microseconds () - start;

  printf ("Total time is %d.%d secs\n", tm / 1000000, tm % 1000000);
}

#endif

#ifdef USE_MW_HEADERS
/* Empty definitions for Metrowerks' SIOUX console library. */

#ifndef __CONSOLE__
#include <console.h>
#endif

short
InstallConsole(short fd)
{
#pragma unused (fd)
	return 0;
}

void
RemoveConsole(void)
{
}

long
WriteCharsToConsole(char *buf, long n)
{
#pragma unused (buf, n)
	return 0;
}

long ReadCharsFromConsole(char *buf, long n)
{
#pragma unused (buf, n)
	return 0;
}

extern char *
__ttyname(long fd)
{
	static char *__devicename = "null device";

	if (fd >= 0 && fd <= 2)
	  return (__devicename);
	return NULL;
}

#endif
OpenPOWER on IntegriCloud