OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [stdio/] [fwalk.c] - Blame information for rev 387

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 148 jeremybenn
/*
2
 * Copyright (c) 1990 The Regents of the University of California.
3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms are permitted
6
 * provided that the above copyright notice and this paragraph are
7
 * duplicated in all such forms and that any documentation,
8
 * advertising materials, and other materials related to such
9
 * distribution and use acknowledge that the software was developed
10
 * by the University of California, Berkeley.  The name of the
11
 * University may not be used to endorse or promote products derived
12
 * from this software without specific prior written permission.
13
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16
 */
17
/* No user fns here.  Pesch 15apr92. */
18
 
19
#if defined(LIBC_SCCS) && !defined(lint)
20
static char sccsid[] = "%W% (Berkeley) %G%";
21
#endif /* LIBC_SCCS and not lint */
22
 
23
#include <_ansi.h>
24
#include <reent.h>
25
#include <stdio.h>
26
#include <stdlib.h>
27
#include <errno.h>
28
#include "local.h"
29
 
30
static int
31
_DEFUN(__fwalk, (ptr, function),
32
       struct _reent *ptr _AND
33
       register int (*function) (FILE *))
34
{
35
  register FILE *fp;
36
  register int n, ret = 0;
37
  register struct _glue *g;
38
 
39
  for (g = &ptr->__sglue; g != NULL; g = g->_next)
40
    for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
41
      if (fp->_flags != 0)
42
        {
43
          _flockfile (fp);
44
          if (fp->_flags != 0 && fp->_file != -1)
45
            ret |= (*function) (fp);
46
          _funlockfile (fp);
47
        }
48
 
49
  return ret;
50
}
51
 
52
/* Special version of __fwalk where the function pointer is a reentrant
53
   I/O function (e.g. _fclose_r).  */
54
static int
55
_DEFUN(__fwalk_reent, (ptr, reent_function),
56
       struct _reent *ptr _AND
57
       register int (*reent_function) (struct _reent *, FILE *))
58
{
59
  register FILE *fp;
60
  register int n, ret = 0;
61
  register struct _glue *g;
62
 
63
  for (g = &ptr->__sglue; g != NULL; g = g->_next)
64
    for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
65
      if (fp->_flags != 0)
66
        {
67
          _flockfile (fp);
68
          if (fp->_flags != 0 && fp->_file != -1)
69
            ret |= (*reent_function) (ptr, fp);
70
          _funlockfile (fp);
71
        }
72
 
73
  return ret;
74
}
75
 
76
int
77
_DEFUN(_fwalk, (ptr, function),
78
       struct _reent *ptr _AND
79
       register int (*function)(FILE *))
80
{
81
  register int ret = 0;
82
 
83
  __sfp_lock_acquire ();
84
 
85
  /* Must traverse given list for streams.  Note that _GLOBAL_REENT
86
     only walked once in exit().  */
87
  ret |= __fwalk (ptr, function);
88
 
89
  __sfp_lock_release ();
90
 
91
  return ret;
92
}
93
 
94
/* Special version of _fwalk which handles a function pointer to a
95
   reentrant I/O function (e.g. _fclose_r).  */
96
int
97
_DEFUN(_fwalk_reent, (ptr, reent_function),
98
       struct _reent *ptr _AND
99
       register int (*reent_function) (struct _reent *, FILE *))
100
{
101
  register int ret = 0;
102
 
103
  __sfp_lock_acquire ();
104
 
105
  /* Must traverse given list for streams.  Note that _GLOBAL_REENT
106
     only walked once in exit().  */
107
  ret |= __fwalk_reent (ptr, reent_function);
108
 
109
  __sfp_lock_release ();
110
 
111
  return ret;
112
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.