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sortix--sortix/libc/stdio/fnewfile.cpp
Jonas 'Sortie' Termansen bb73362d23 Create stdio buffers at FILE creation time.
This removes support for user-supplied buffers with setvbuf.
2016-01-26 18:39:48 +01:00

47 lines
1.5 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013, 2015.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
stdio/fnewfile.cpp
Allocates and initializes a simple FILE object ready for construction.
*******************************************************************************/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static void fnewfile_destroyer(void* /*user*/, FILE* fp)
{
free(fp);
}
extern "C" FILE* fnewfile(void)
{
FILE* fp = (FILE*) malloc(sizeof(FILE) + BUFSIZ);
if ( !fp )
return NULL;
memset(fp, 0, sizeof(FILE));
fp->buffer = (unsigned char*) (fp + 1);
fp->free_user = NULL;
fp->free_func = fnewfile_destroyer;
fresetfile(fp);
fregister(fp);
return fp;
}