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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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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| 2307 | hudecek | 39 | #include <futex.h> |
| 40 | #include <async.h> |
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| 1234 | cejka | 41 | |
| 2307 | hudecek | 42 | static atomic_t printf_futex = FUTEX_INITIALIZER; |
| 1234 | cejka | 43 | |
| 2307 | hudecek | 44 | static int vprintf_write(const char *str, size_t count, void *unused) |
| 1234 | cejka | 45 | { |
| 46 | return write(1, str, count); |
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| 47 | } |
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| 48 | |||
| 1623 | cejka | 49 | /** Print formatted text. |
| 50 | * @param fmt format string |
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| 51 | * @param ap format parameters |
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| 52 | * \see For more details about format string see printf_core. |
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| 53 | */ |
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| 1234 | cejka | 54 | int vprintf(const char *fmt, va_list ap) |
| 55 | { |
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| 2307 | hudecek | 56 | struct printf_spec ps = { |
| 57 | (int (*)(void *, size_t, void *)) vprintf_write, |
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| 58 | NULL |
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| 59 | }; |
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| 60 | /* |
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| 61 | * Prevent other threads to execute printf_core() |
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| 62 | */ |
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| 63 | futex_down(&printf_futex); |
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| 64 | /* |
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| 65 | * Prevent other pseudo threads of the same thread |
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| 66 | * to execute printf_core() |
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| 67 | */ |
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| 68 | async_serialize_start(); |
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| 69 | int ret = printf_core(fmt, &ps, ap); |
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| 70 | async_serialize_end(); |
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| 71 | futex_up(&printf_futex); |
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| 72 | return ret; |
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| 1234 | cejka | 73 | } |
| 74 | |||
| 1866 | jermar | 75 | /** @} |
| 1653 | cejka | 76 | */ |