Rev 4348 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 1234 | cejka | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2006 Josef Cejka |
| 1234 | cejka | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 1866 | jermar | 29 | /** @addtogroup libc |
| 1653 | cejka | 30 | * @{ |
| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 1234 | cejka | 35 | #include <stdarg.h> |
| 36 | #include <stdio.h> |
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| 37 | #include <unistd.h> |
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| 38 | #include <io/printf_core.h> |
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| 2230 | jermar | 39 | #include <futex.h> |
| 40 | #include <async.h> |
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| 4691 | svoboda | 41 | #include <string.h> |
| 1234 | cejka | 42 | |
| 2230 | jermar | 43 | static atomic_t printf_futex = FUTEX_INITIALIZER; |
| 44 | |||
| 4691 | svoboda | 45 | static int vprintf_str_write(const char *str, size_t size, void *stream) |
| 1234 | cejka | 46 | { |
| 4691 | svoboda | 47 | size_t wr = fwrite(str, 1, size, (FILE *) stream); |
| 48 | return str_nlength(str, wr); |
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| 1234 | cejka | 49 | } |
| 50 | |||
| 4691 | svoboda | 51 | static int vprintf_wstr_write(const wchar_t *str, size_t size, void *stream) |
| 4348 | svoboda | 52 | { |
| 53 | size_t offset = 0; |
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| 4691 | svoboda | 54 | size_t chars = 0; |
| 4348 | svoboda | 55 | |
| 56 | while (offset < size) { |
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| 4691 | svoboda | 57 | if (fputc(str[chars], (FILE *) stream) <= 0) |
| 58 | break; |
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| 59 | |||
| 4348 | svoboda | 60 | chars++; |
| 61 | offset += sizeof(wchar_t); |
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| 62 | } |
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| 63 | |||
| 64 | return chars; |
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| 65 | } |
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| 66 | |||
| 1623 | cejka | 67 | /** Print formatted text. |
| 4691 | svoboda | 68 | * |
| 69 | * @param stream Output stream |
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| 70 | * @param fmt Format string |
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| 71 | * @param ap Format parameters |
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| 72 | * |
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| 1623 | cejka | 73 | * \see For more details about format string see printf_core. |
| 4691 | svoboda | 74 | * |
| 1623 | cejka | 75 | */ |
| 4691 | svoboda | 76 | int vfprintf(FILE *stream, const char *fmt, va_list ap) |
| 1234 | cejka | 77 | { |
| 2230 | jermar | 78 | struct printf_spec ps = { |
| 4348 | svoboda | 79 | vprintf_str_write, |
| 80 | vprintf_wstr_write, |
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| 4691 | svoboda | 81 | stream |
| 2230 | jermar | 82 | }; |
| 4691 | svoboda | 83 | |
| 2230 | jermar | 84 | /* |
| 85 | * Prevent other threads to execute printf_core() |
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| 86 | */ |
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| 87 | futex_down(&printf_futex); |
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| 4691 | svoboda | 88 | |
| 2230 | jermar | 89 | /* |
| 4691 | svoboda | 90 | * Prevent other fibrils of the same thread |
| 2230 | jermar | 91 | * to execute printf_core() |
| 92 | */ |
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| 93 | async_serialize_start(); |
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| 4691 | svoboda | 94 | |
| 2209 | decky | 95 | int ret = printf_core(fmt, &ps, ap); |
| 4691 | svoboda | 96 | |
| 2230 | jermar | 97 | async_serialize_end(); |
| 98 | futex_up(&printf_futex); |
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| 4691 | svoboda | 99 | |
| 2209 | decky | 100 | return ret; |
| 1234 | cejka | 101 | } |
| 102 | |||
| 4691 | svoboda | 103 | /** Print formatted text to stdout. |
| 104 | * |
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| 105 | * @param file Output stream |
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| 106 | * @param fmt Format string |
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| 107 | * @param ap Format parameters |
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| 108 | * |
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| 109 | * \see For more details about format string see printf_core. |
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| 110 | * |
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| 111 | */ |
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| 112 | int vprintf(const char *fmt, va_list ap) |
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| 113 | { |
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| 114 | return vfprintf(stdout, fmt, ap); |
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| 115 | } |
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| 116 | |||
| 1866 | jermar | 117 | /** @} |
| 1653 | cejka | 118 | */ |