libcsupport/src/printerfprintfputc.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (c) 2017 embedded brains GmbH & Co. KG
0005  *
0006  * Redistribution and use in source and binary forms, with or without
0007  * modification, are permitted provided that the following conditions
0008  * are met:
0009  * 1. Redistributions of source code must retain the above copyright
0010  *    notice, this list of conditions and the following disclaimer.
0011  * 2. Redistributions in binary form must reproduce the above copyright
0012  *    notice, this list of conditions and the following disclaimer in the
0013  *    documentation and/or other materials provided with the distribution.
0014  *
0015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0025  * POSSIBILITY OF SUCH DAMAGE.
0026  */
0027
0028 #ifdef HAVE_CONFIG_H
0029 #include "config.h"
0030 #endif
0031
0032 #include <rtems/printer.h>
0033 #include <rtems/bspIo.h>
0034
0035 #include <pthread.h>
0036
0037 static pthread_once_t fprintf_putc_once = PTHREAD_ONCE_INIT;
0038
0039 static FILE fprintf_putc_file;
0040
0041 static _READ_WRITE_RETURN_TYPE fprintf_putc_write(
0042   struct _reent            *ptr,
0043   void                     *cookie,
0044   char const               *buf,
0045   _READ_WRITE_BUFSIZE_TYPE  n
0046 )
0047 {
0048   _READ_WRITE_RETURN_TYPE i;
0049   _READ_WRITE_RETURN_TYPE m;
0050
0051   m = (_READ_WRITE_RETURN_TYPE) n;
0052   for (i = 0; i < m; ++i) {
0053     rtems_putc(buf[i]);
0054   }
0055
0056   return m;
0057 }
0058
0059 static void fprintf_putc_init(void)
0060 {
0061   FILE *f;
0062
0063   f = &fprintf_putc_file;
0064   f->_flags = __SWR | __SNBF;
0065   f->_cookie = f;
0066   f->_write = fprintf_putc_write;
0067   __lock_init_recursive(f->_lock);
0068 }
0069
0070 static int fprintf_putc_printer(void *context, const char *fmt, va_list ap)
0071 {
0072   return vfprintf(context, fmt, ap);
0073 }
0074
0075 void rtems_print_printer_fprintf_putc(rtems_printer *printer)
0076 {
0077   pthread_once(&fprintf_putc_once, fprintf_putc_init);
0078   printer->context = &fprintf_putc_file;
0079   printer->printer = fprintf_putc_printer;
0080 }