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1 | /* |
1 | /* |
2 | * Copyright (c) 2006 Josef Cejka |
2 | * Copyright (c) 2006 Josef Cejka |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup libc |
29 | /** @addtogroup libc |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <stdarg.h> |
35 | #include <stdarg.h> |
36 | #include <stdio.h> |
36 | #include <stdio.h> |
37 | #include <unistd.h> |
37 | #include <unistd.h> |
38 | #include <io/printf_core.h> |
38 | #include <io/printf_core.h> |
39 | #include <futex.h> |
39 | #include <futex.h> |
40 | #include <async.h> |
40 | #include <async.h> |
41 | #include <string.h> |
41 | #include <string.h> |
42 | 42 | ||
43 | static atomic_t printf_futex = FUTEX_INITIALIZER; |
43 | static atomic_t printf_futex = FUTEX_INITIALIZER; |
44 | 44 | ||
45 | static int vprintf_str_write(const char *str, size_t size, void *stream) |
45 | static int vprintf_str_write(const char *str, size_t size, void *stream) |
46 | { |
46 | { |
47 | size_t wr = fwrite(str, 1, size, (FILE *) stream); |
47 | size_t wr = fwrite(str, 1, size, (FILE *) stream); |
48 | return str_nlength(str, wr); |
48 | return str_nlength(str, wr); |
49 | } |
49 | } |
50 | 50 | ||
51 | static int vprintf_wstr_write(const wchar_t *str, size_t size, void *stream) |
51 | static int vprintf_wstr_write(const wchar_t *str, size_t size, void *stream) |
52 | { |
52 | { |
53 | size_t offset = 0; |
53 | size_t offset = 0; |
54 | size_t chars = 0; |
54 | size_t chars = 0; |
55 | 55 | ||
56 | while (offset < size) { |
56 | while (offset < size) { |
57 | if (fputc(str[chars], (FILE *) stream) <= 0) |
57 | if (fputc(str[chars], (FILE *) stream) <= 0) |
58 | break; |
58 | break; |
59 | 59 | ||
60 | chars++; |
60 | chars++; |
61 | offset += sizeof(wchar_t); |
61 | offset += sizeof(wchar_t); |
62 | } |
62 | } |
63 | 63 | ||
64 | return chars; |
64 | return chars; |
65 | } |
65 | } |
66 | 66 | ||
67 | /** Print formatted text. |
67 | /** Print formatted text. |
68 | * |
68 | * |
69 | * @param stream Output stream |
69 | * @param stream Output stream |
70 | * @param fmt Format string |
70 | * @param fmt Format string |
71 | * @param ap Format parameters |
71 | * @param ap Format parameters |
72 | * |
72 | * |
73 | * \see For more details about format string see printf_core. |
73 | * \see For more details about format string see printf_core. |
74 | * |
74 | * |
75 | */ |
75 | */ |
76 | int vfprintf(FILE *stream, const char *fmt, va_list ap) |
76 | int vfprintf(FILE *stream, const char *fmt, va_list ap) |
77 | { |
77 | { |
78 | struct printf_spec ps = { |
78 | struct printf_spec ps = { |
79 | vprintf_str_write, |
79 | vprintf_str_write, |
80 | vprintf_wstr_write, |
80 | vprintf_wstr_write, |
81 | stream |
81 | stream |
82 | }; |
82 | }; |
83 | 83 | ||
84 | /* |
84 | /* |
85 | * Prevent other threads to execute printf_core() |
85 | * Prevent other threads to execute printf_core() |
86 | */ |
86 | */ |
87 | futex_down(&printf_futex); |
87 | futex_down(&printf_futex); |
88 | 88 | ||
89 | /* |
89 | /* |
90 | * Prevent other pseudo threads of the same thread |
90 | * Prevent other fibrils of the same thread |
91 | * to execute printf_core() |
91 | * to execute printf_core() |
92 | */ |
92 | */ |
93 | async_serialize_start(); |
93 | async_serialize_start(); |
94 | 94 | ||
95 | int ret = printf_core(fmt, &ps, ap); |
95 | int ret = printf_core(fmt, &ps, ap); |
96 | 96 | ||
97 | async_serialize_end(); |
97 | async_serialize_end(); |
98 | futex_up(&printf_futex); |
98 | futex_up(&printf_futex); |
99 | 99 | ||
100 | return ret; |
100 | return ret; |
101 | } |
101 | } |
102 | 102 | ||
103 | /** Print formatted text to stdout. |
103 | /** Print formatted text to stdout. |
104 | * |
104 | * |
105 | * @param file Output stream |
105 | * @param file Output stream |
106 | * @param fmt Format string |
106 | * @param fmt Format string |
107 | * @param ap Format parameters |
107 | * @param ap Format parameters |
108 | * |
108 | * |
109 | * \see For more details about format string see printf_core. |
109 | * \see For more details about format string see printf_core. |
110 | * |
110 | * |
111 | */ |
111 | */ |
112 | int vprintf(const char *fmt, va_list ap) |
112 | int vprintf(const char *fmt, va_list ap) |
113 | { |
113 | { |
114 | return vfprintf(stdout, fmt, ap); |
114 | return vfprintf(stdout, fmt, ap); |
115 | } |
115 | } |
116 | 116 | ||
117 | /** @} |
117 | /** @} |
118 | */ |
118 | */ |
119 | 119 |