/* mpsioan.c: RAVENBROOK MEMORY POOL SYSTEM I/O IMPLEMENTATION (ANSI)
*
* $Id: //info.ravenbrook.com/project/mps/version/1.103/code/mpsioan.c#1 $
* Copyright (c) 2001 Ravenbrook Limited. See end of file for license.
*
* .readership: For MPS client application developers and MPS developers.
* .sources: <design/io/>
*/
#include "mpsio.h"
#include "mpstd.h"
#ifdef MPS_OS_SU
extern int fclose (FILE *stream);
extern int fflush (FILE *stream);
extern size_t fwrite (const void *ptr, size_t size, size_t nmemb, FILE *stream);
/* These functions are used in the macro definitions of putc and getc
* but not declared in stdio.h.
*/
extern int _filbuf(FILE *stream);
extern int _flsbuf(unsigned char c, FILE *stream);
#endif
#ifdef MPS_OS_XC
#include "osxc.h"
#endif
#include <stdio.h>
#include "config.h" /* to get platform configurations */
static FILE *ioFile = NULL;
mps_res_t mps_io_create(mps_io_t *mps_io_r)
{
FILE *f;
if(ioFile != NULL) /* See <code/event.c#trans.log> */
return MPS_RES_LIMIT; /* Cannot currently open more than one log */
f = fopen("mpsio.log", "wb");
if(f == NULL)
return MPS_RES_IO;
*mps_io_r = (mps_io_t)f;
ioFile = f;
return MPS_RES_OK;
}
void mps_io_destroy(mps_io_t mps_io)
{
FILE *f = (FILE *)mps_io;
ioFile = NULL; /* Should check f == ioFile */
(void)fclose(f);
}
mps_res_t mps_io_write(mps_io_t mps_io, void *buf, size_t size)
{
FILE *f = (FILE *)mps_io; /* Should check f == ioFile */
size_t n;
n = fwrite(buf, size, 1, f);
if(n != 1)
return MPS_RES_IO;
return MPS_RES_OK;
}
mps_res_t mps_io_flush(mps_io_t mps_io)
{
FILE *f = (FILE *)mps_io; /* Should check f == ioFile */
int e;
e = fflush(f);
if(e == EOF)
return MPS_RES_IO;
return MPS_RES_OK;
}
/* C. COPYRIGHT AND LICENSE
*
* Copyright (C) 2001-2002 Ravenbrook Limited <http://www.ravenbrook.com/>.
* All rights reserved. This is an open source license. Contact
* Ravenbrook for commercial licensing options.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Redistributions in any form must be accompanied by information on how
* to obtain complete source code for this software and any accompanying
* software that uses this software. The source code must either be
* included in the distribution or be available for no more than the cost
* of distribution plus a nominal fee, and must be freely redistributable
* under reasonable conditions. For an executable file, complete source
* code means the source code for all modules it contains. It does not
* include source code for modules or files that typically accompany the
* major components of the operating system on which the executable file
* runs.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT, ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS AND CONTRIBUTORS 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.
*/