1 /* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
2 *
3 * GNU Library General Public License (LGPL) version 2 or later.
4 *
5 * Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
6 */
7
8 #include "_stdio.h"
9
10 #undef fputc
11 #undef fputc_unlocked
12 #undef putc
13 #undef putc_unlocked
14
15
16 #ifdef __DO_UNLOCKED
17
__fputc_unlocked(int c,register FILE * stream)18 int __fputc_unlocked(int c, register FILE *stream)
19 {
20 __STDIO_STREAM_VALIDATE(stream);
21
22 /* First the fast path. We're good to go if putc macro enabled. */
23 if (__STDIO_STREAM_CAN_USE_BUFFER_ADD(stream)) {
24 __STDIO_STREAM_BUFFER_ADD(stream, ((unsigned char) c));
25 return (unsigned char) c;
26 }
27
28 /* Next quickest... writing and narrow oriented, but macro
29 * disabled and/or buffer is full. */
30 if (__STDIO_STREAM_IS_NARROW_WRITING(stream)
31 || !__STDIO_STREAM_TRANS_TO_WRITE(stream, __FLAG_NARROW)
32 ) {
33 if (__STDIO_STREAM_IS_FAKE_VSNPRINTF(stream)) {
34 return (unsigned char) c;
35 }
36
37 if (__STDIO_STREAM_BUFFER_SIZE(stream)) { /* Do we have a buffer? */
38 /* The buffer is full and/or the stream is line buffered. */
39 if (!__STDIO_STREAM_BUFFER_WAVAIL(stream) /* Buffer full? */
40 && __STDIO_COMMIT_WRITE_BUFFER(stream) /* Commit failed! */
41 ) {
42 goto BAD;
43 }
44 #ifdef __UCLIBC_MJN3_ONLY__
45 #warning CONSIDER: Should we fail if the commit fails but we now have room?
46 #endif
47
48 __STDIO_STREAM_BUFFER_ADD(stream, ((unsigned char) c));
49
50 if (__STDIO_STREAM_IS_LBF(stream)) {
51 if ((((unsigned char) c) == '\n')
52 && __STDIO_COMMIT_WRITE_BUFFER(stream)) {
53 /* Commit failed! */
54 __STDIO_STREAM_BUFFER_UNADD(stream); /* Undo the write! */
55 goto BAD;
56 }
57 }
58 } else {
59 /* NOTE: Do not try to save space by moving uc to the top of
60 * the file, as that dramaticly increases runtime. */
61 unsigned char uc = (unsigned char) c;
62 if (! __stdio_WRITE(stream, &uc, 1)) {
63 goto BAD;
64 }
65 }
66 return (unsigned char) c;
67 }
68
69 BAD:
70 return EOF;
71 }
72 libc_hidden_def(__fputc_unlocked)
73
74 strong_alias(__fputc_unlocked,fputc_unlocked)
75
76 strong_alias(__fputc_unlocked,putc_unlocked)
77 #ifndef __UCLIBC_HAS_THREADS__
78 strong_alias(__fputc_unlocked,fputc)
79 libc_hidden_def(fputc)
80
81 strong_alias(__fputc_unlocked,putc)
82 #endif
83
84 #elif defined __UCLIBC_HAS_THREADS__
85
86 int fputc(int c, register FILE *stream)
87 {
88 if (stream->__user_locking != 0) {
89 return __PUTC_UNLOCKED_MACRO(c, stream);
90 } else {
91 int retval;
92 __STDIO_ALWAYS_THREADLOCK(stream);
93 retval = __PUTC_UNLOCKED_MACRO(c, stream);
94 __STDIO_ALWAYS_THREADUNLOCK(stream);
95 return retval;
96 }
97 }
98 libc_hidden_def(fputc)
99
100 strong_alias(fputc,putc)
101
102 #endif
103