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Publish minor changes to readme and configure files in main directory. Main directory and code directory licence texts are now fully updated. Copied from Perforce Change: 196994
128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
/* mpsioan.c: RAVENBROOK MEMORY POOL SYSTEM I/O IMPLEMENTATION (ANSI)
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*
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* $Id$
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* Copyright (c) 2001-2020 Ravenbrook Limited. See end of file for license.
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*
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* .readership: For MPS client application developers and MPS developers.
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* .sources: <design/io>
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*/
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#include "mpsio.h"
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#include "mpstd.h"
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/* We don't want to use the ANSI assert() to check that the interface
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* is being used correctly, because it's not controlled by the MPS
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* variety mechanism: we might end up with assertions being turned on
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* in the HOT variety or turned off in the COOL variety (depending on
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* whether or not the client program compiles the MPS with NDEBUG
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* defined). So we include "check.h" and use AVER() instead. See
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* job003504. If you are developing your own plinth, you should
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* consider whether to use your own preferred assertion mechanism
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* instead.
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*/
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#include "check.h"
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#include "config.h" /* to get platform configurations */
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#include <stdio.h>
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#include <stdlib.h>
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static FILE *ioFile = NULL;
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#ifdef MPS_BUILD_MV
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/* MSVC warning 4996 = stdio / C runtime 'unsafe' */
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/* Objects to: fopen. See job001934. */
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#pragma warning( disable : 4996 )
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#endif
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mps_res_t mps_io_create(mps_io_t *mps_io_r)
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{
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FILE *f;
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const char *filename;
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if(ioFile != NULL) /* See <code/event.c#trans.log> */
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return MPS_RES_LIMIT; /* Cannot currently open more than one log */
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filename = getenv("MPS_TELEMETRY_FILENAME");
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if(filename == NULL)
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filename = "mpsio.log";
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f = fopen(filename, "wb");
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if(f == NULL)
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return MPS_RES_IO;
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*mps_io_r = (mps_io_t)f;
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ioFile = f;
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return MPS_RES_OK;
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}
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void mps_io_destroy(mps_io_t mps_io)
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{
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FILE *f = (FILE *)mps_io;
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AVER(f == ioFile);
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AVER(f != NULL);
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ioFile = NULL;
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(void)fclose(f);
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}
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mps_res_t mps_io_write(mps_io_t mps_io, void *buf, size_t size)
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{
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FILE *f = (FILE *)mps_io;
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size_t n;
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AVER(f == ioFile);
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AVER(f != NULL);
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n = fwrite(buf, size, 1, f);
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if(n != 1)
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return MPS_RES_IO;
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return MPS_RES_OK;
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}
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mps_res_t mps_io_flush(mps_io_t mps_io)
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{
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FILE *f = (FILE *)mps_io;
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int e;
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AVER(f == ioFile);
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AVER(f != NULL);
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e = fflush(f);
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if(e == EOF)
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return MPS_RES_IO;
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return MPS_RES_OK;
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}
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/* C. COPYRIGHT AND LICENSE
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*
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* Copyright (C) 2001-2020 Ravenbrook Limited <http://www.ravenbrook.com/>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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