blob: 3df25c39a29d1816697601fe674a05a309a3c9e9 (
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
|
/* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
*
* GNU Library General Public License (LGPL) version 2 or later.
*
* Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
*/
#include "_stdio.h"
#undef fgetc
#undef fgetc_unlocked
#undef getc
#undef getc_unlocked
#ifdef __DO_UNLOCKED
int attribute_hidden __fgetc_unlocked(FILE *stream)
{
__STDIO_STREAM_VALIDATE(stream);
/* First the fast path. We're good to go if getc macro enabled. */
if (__STDIO_STREAM_CAN_USE_BUFFER_GET(stream)) {
return __STDIO_STREAM_BUFFER_GET(stream);
}
/* Next quickest... reading and narrow oriented, but macro
* disabled and/or buffer is exhausted. */
if (__STDIO_STREAM_IS_NARROW_READING(stream)
|| !__STDIO_STREAM_TRANS_TO_READ(stream, __FLAG_NARROW)
) {
if (stream->__modeflags & __FLAG_UNGOT) { /* Use ungots first. */
unsigned char uc = stream->__ungot[(stream->__modeflags--) & 1];
stream->__ungot[1] = 0;
__STDIO_STREAM_VALIDATE(stream);
return uc;
}
if (__STDIO_STREAM_BUFFER_RAVAIL(stream)) { /* Have buffered? */
return __STDIO_STREAM_BUFFER_GET(stream);
}
/* Is this a fake stream for *sscanf? */
if (__STDIO_STREAM_IS_FAKE_VSSCANF(stream)) {
__STDIO_STREAM_SET_EOF(stream);
return EOF;
}
/* We need to read from the host environment, so we must
* flush all line buffered streams if the stream is not
* fully buffered. */
if (!__STDIO_STREAM_IS_FBF(stream)) {
__STDIO_FLUSH_LBF_STREAMS;
}
if (__STDIO_STREAM_BUFFER_SIZE(stream)) { /* Do we have a buffer? */
__STDIO_STREAM_DISABLE_GETC(stream);
if(__STDIO_FILL_READ_BUFFER(stream)) { /* Refill succeeded? */
__STDIO_STREAM_ENABLE_GETC(stream); /* FBF or LBF */
return __STDIO_STREAM_BUFFER_GET(stream);
}
} else {
unsigned char uc;
if (__stdio_READ(stream, &uc, 1)) {
return uc;
}
}
}
return EOF;
}
weak_alias(__fgetc_unlocked,fgetc_unlocked);
weak_alias(__fgetc_unlocked,getc_unlocked);
#ifndef __UCLIBC_HAS_THREADS__
weak_alias(__fgetc_unlocked,fgetc);
weak_alias(__fgetc_unlocked,getc);
#endif
#elif defined __UCLIBC_HAS_THREADS__
int fgetc(register FILE *stream)
{
if (stream->__user_locking != 0) {
return __GETC_UNLOCKED_MACRO(stream);
} else {
int retval;
__STDIO_ALWAYS_THREADLOCK(stream);
retval = __GETC_UNLOCKED_MACRO(stream);
__STDIO_ALWAYS_THREADUNLOCK(stream);
return retval;
}
}
weak_alias(fgetc,getc);
#endif
|
