WebSVN – HelenOS – Diff – /branches/dd/uspace/lib/libc/generic/io/vprintf.c


/*
 * Copyright (c) 2006 Josef Cejka
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup libc
 * @{
 */
/** @file
 */
 
#include <stdarg.h>
#include <stdio.h>
#include <unistd.h>
#include <io/printf_core.h>
#include <futex.h>
#include <async.h>
#include <console.h>
 
static atomic_t printf_futex = FUTEX_INITIALIZER;
 
static int vprintf_str_write(const char *str, size_t size, void *data)
{
    size_t offset = 0;
    size_t prev;
    count_t chars = 0;
   
    while (offset < size) {
        prev = offset;
        str_decode(str, &offset, size);
        console_write(str + prev, offset - prev);
        chars++;
    }
   
    return chars;
}
 
static int vprintf_wstr_write(const wchar_t *str, size_t size, void *data)
{
    size_t offset = 0;
    size_t boff;
    count_t chars = 0;
    char buf[4];
   
    while (offset < size) {
        boff = 0;
        chr_encode(str[chars], buf, &boff, 4);
        console_write(buf, boff);
        chars++;
        offset += sizeof(wchar_t);
    }
   
    return chars;
}
 
 
/** Print formatted text.
 * @param fmt   format string
 * @param ap    format parameters
 * \see For more details about format string see printf_core.
 */
int vprintf(const char *fmt, va_list ap)
{
    struct printf_spec ps = {
        vprintf_str_write,
        vprintf_wstr_write,
         NULL
    };
    /*
     * Prevent other threads to execute printf_core()
     */
    futex_down(&printf_futex);
    /*
     * Prevent other pseudo threads of the same thread
     * to execute printf_core()
     */
    async_serialize_start();
    int ret = printf_core(fmt, &ps, ap);
    async_serialize_end();
    futex_up(&printf_futex);
    return ret;
}
 
/** @}
 */
 

Rev 4296	Rev 4420
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 <console.h>
41		42
42	static atomic_t printf_futex = FUTEX_INITIALIZER;	43	static atomic_t printf_futex = FUTEX_INITIALIZER;
43		44
44	static int vprintf_str_write(const char str, size_t size, void data)	45	static int vprintf_str_write(const char str, size_t size, void data)
45	{	46	{
46	size_t offset = 0;	47	size_t offset = 0;
47	size_t prev;	48	size_t prev;
48	count_t chars = 0;	49	count_t chars = 0;
49		50
50	while (offset < size) {	51	while (offset < size) {
51	prev = offset;	52	prev = offset;
52	str_decode(str, &offset, size);	53	str_decode(str, &offset, size);
53	write_stdout(str + prev, offset - prev);	54	console_write(str + prev, offset - prev);
54	chars++;	55	chars++;
55	}	56	}
56		57
57	return chars;	58	return chars;
58	}	59	}
59		60
60	static int vprintf_wstr_write(const wchar_t str, size_t size, void data)	61	static int vprintf_wstr_write(const wchar_t str, size_t size, void data)
61	{	62	{
62	size_t offset = 0;	63	size_t offset = 0;
63	size_t boff;	64	size_t boff;
64	count_t chars = 0;	65	count_t chars = 0;
65	char buf[4];	66	char buf[4];
66		67
67	while (offset < size) {	68	while (offset < size) {
68	boff = 0;	69	boff = 0;
69	chr_encode(str[chars], buf, &boff, 4);	70	chr_encode(str[chars], buf, &boff, 4);
70	write_stdout(buf, boff);	71	console_write(buf, boff);
71	chars++;	72	chars++;
72	offset += sizeof(wchar_t);	73	offset += sizeof(wchar_t);
73	}	74	}
74		75
75	return chars;	76	return chars;
76	}	77	}
77		78
78		79
79	/** Print formatted text.	80	/** Print formatted text.
80	* @param fmt format string	81	* @param fmt format string
81	* @param ap format parameters	82	* @param ap format parameters
82	* \see For more details about format string see printf_core.	83	* \see For more details about format string see printf_core.
83	*/	84	*/
84	int vprintf(const char *fmt, va_list ap)	85	int vprintf(const char *fmt, va_list ap)
85	{	86	{
86	struct printf_spec ps = {	87	struct printf_spec ps = {
87	vprintf_str_write,	88	vprintf_str_write,
88	vprintf_wstr_write,	89	vprintf_wstr_write,
89	NULL	90	NULL
90	};	91	};
91	/*	92	/*
92	* Prevent other threads to execute printf_core()	93	* Prevent other threads to execute printf_core()
93	*/	94	*/
94	futex_down(&printf_futex);	95	futex_down(&printf_futex);
95	/*	96	/*
96	* Prevent other pseudo threads of the same thread	97	* Prevent other pseudo threads of the same thread
97	* to execute printf_core()	98	* to execute printf_core()
98	*/	99	*/
99	async_serialize_start();	100	async_serialize_start();
100	int ret = printf_core(fmt, &ps, ap);	101	int ret = printf_core(fmt, &ps, ap);
101	async_serialize_end();	102	async_serialize_end();
102	futex_up(&printf_futex);	103	futex_up(&printf_futex);
103	return ret;	104	return ret;
104	}	105	}
105		106
106	/** @}	107	/** @}
107	*/	108	*/
108		109

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(root)/branches/dd/uspace/lib/libc/generic/io/vprintf.c @ 4537 – Rev 4296 → 4420