264 lines
7.1 KiB
C
264 lines
7.1 KiB
C
/* $NetBSD: citrus_mapper_serial.c,v 1.2 2003/07/12 15:39:20 tshiozak Exp $ */
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/*-
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* Copyright (c)2003 Citrus Project,
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* All rights reserved.
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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
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* are met:
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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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* 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 distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: citrus_mapper_serial.c,v 1.2 2003/07/12 15:39:20 tshiozak Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <sys/queue.h>
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#include "citrus_namespace.h"
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#include "citrus_types.h"
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#include "citrus_bcs.h"
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#include "citrus_module.h"
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#include "citrus_region.h"
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#include "citrus_memstream.h"
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#include "citrus_mmap.h"
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#include "citrus_hash.h"
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#include "citrus_mapper.h"
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#include "citrus_mapper_serial.h"
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/* ---------------------------------------------------------------------- */
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_CITRUS_MAPPER_DECLS(mapper_serial);
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_CITRUS_MAPPER_DEF_OPS(mapper_serial);
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#define _citrus_mapper_parallel_mapper_init \
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_citrus_mapper_serial_mapper_init
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#define _citrus_mapper_parallel_mapper_uninit \
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_citrus_mapper_serial_mapper_uninit
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#define _citrus_mapper_parallel_mapper_init_state \
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_citrus_mapper_serial_mapper_init_state
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static int _citrus_mapper_parallel_mapper_convert(
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struct _citrus_mapper * __restrict, _index_t * __restrict, _index_t,
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void * __restrict);
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_CITRUS_MAPPER_DEF_OPS(mapper_parallel);
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#undef _citrus_mapper_parallel_mapper_init
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#undef _citrus_mapper_parallel_mapper_uninit
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#undef _citrus_mapper_parallel_mapper_init_state
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/* ---------------------------------------------------------------------- */
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struct maplink {
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SIMPLEQ_ENTRY(maplink) ml_entry;
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struct _mapper *ml_mapper;
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};
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SIMPLEQ_HEAD(maplist, maplink);
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struct _citrus_mapper_serial {
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struct maplist sr_mappers;
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};
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int
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_citrus_mapper_serial_mapper_getops(struct _citrus_mapper_ops *ops,
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size_t lenops, uint32_t expected_version)
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{
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if (expected_version<_CITRUS_MAPPER_ABI_VERSION || lenops<sizeof(*ops))
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return EINVAL;
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memcpy(ops, &_citrus_mapper_serial_mapper_ops,
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sizeof(_citrus_mapper_serial_mapper_ops));
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return 0;
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}
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int
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_citrus_mapper_parallel_mapper_getops(struct _citrus_mapper_ops *ops,
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size_t lenops, uint32_t expected_version)
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{
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if (expected_version<_CITRUS_MAPPER_ABI_VERSION || lenops<sizeof(*ops))
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return EINVAL;
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memcpy(ops, &_citrus_mapper_parallel_mapper_ops,
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sizeof(_citrus_mapper_parallel_mapper_ops));
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return 0;
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}
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static void
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uninit(struct _citrus_mapper_serial *sr)
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{
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struct maplink *ml;
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while ((ml = SIMPLEQ_FIRST(&sr->sr_mappers)) != NULL) {
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SIMPLEQ_REMOVE_HEAD(&sr->sr_mappers, ml_entry);
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_mapper_close(ml->ml_mapper);
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free(ml);
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}
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}
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static int
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parse_var(struct _citrus_mapper_area *__restrict ma,
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struct _citrus_mapper_serial *sr, struct _memstream *ms)
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{
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int ret;
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struct _region r;
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char mapname[PATH_MAX];
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struct maplink *ml;
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SIMPLEQ_INIT(&sr->sr_mappers);
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while (1) {
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/* remove beginning white spaces */
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_memstream_skip_ws(ms);
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if (_memstream_iseof(ms))
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break;
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/* cut down a mapper name */
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_memstream_chr(ms, &r, ',');
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snprintf(mapname, sizeof(mapname), "%.*s",
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(int)_region_size(&r), (char *)_region_head(&r));
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/* remove trailing white spaces */
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mapname[_bcs_skip_nonws(mapname)-mapname] = '\0';
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/* create a new mapper record */
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ml = malloc(sizeof(*ml));
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if (ml == NULL)
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return errno;
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ret = _mapper_open(ma, &ml->ml_mapper, mapname);
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if (ret) {
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free(ml);
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return ret;
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}
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/* support only 1:1 and stateless converter */
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if (_mapper_get_src_max(ml->ml_mapper) != 1 ||
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_mapper_get_dst_max(ml->ml_mapper) != 1 ||
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_mapper_get_state_size(ml->ml_mapper) != 0) {
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free(ml);
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return EINVAL;
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}
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SIMPLEQ_INSERT_TAIL(&sr->sr_mappers, ml, ml_entry);
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}
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return 0;
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}
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static int
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/*ARGSUSED*/
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_citrus_mapper_serial_mapper_init(struct _citrus_mapper_area *__restrict ma,
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struct _citrus_mapper * __restrict cm,
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const char * __restrict dir,
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const void * __restrict var, size_t lenvar,
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struct _citrus_mapper_traits * __restrict mt,
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size_t lenmt)
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{
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struct _citrus_mapper_serial *sr;
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struct _memstream ms;
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struct _region r;
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_DIAGASSERT(cm && dir && mt);
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if (lenmt<sizeof(*mt))
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return EINVAL;
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sr = malloc(sizeof(*sr));
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if (sr == NULL)
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return errno;
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_region_init(&r, (void *)var, lenvar);
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_memstream_bind(&ms, &r);
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if (parse_var(ma, sr, &ms)) {
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uninit(sr);
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free(sr);
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return EINVAL;
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}
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cm->cm_closure = sr;
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mt->mt_src_max = mt->mt_dst_max = 1; /* 1:1 converter */
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mt->mt_state_size = 0; /* stateless */
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return 0;
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}
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static void
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/*ARGSUSED*/
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_citrus_mapper_serial_mapper_uninit(struct _citrus_mapper *cm)
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{
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if (cm && cm->cm_closure) {
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uninit(cm->cm_closure);
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free(cm->cm_closure);
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}
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}
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static int
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/*ARGSUSED*/
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_citrus_mapper_serial_mapper_convert(struct _citrus_mapper * __restrict cm,
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_index_t * __restrict dst, _index_t src,
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void * __restrict ps)
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{
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int ret;
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struct _citrus_mapper_serial *sr;
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struct maplink *ml;
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_DIAGASSERT(cm && cm->cm_closure);
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sr = cm->cm_closure;
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SIMPLEQ_FOREACH(ml, &sr->sr_mappers, ml_entry) {
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ret = _mapper_convert(ml->ml_mapper, &src, src, NULL);
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if (ret != _MAPPER_CONVERT_SUCCESS)
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return ret;
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}
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*dst = src;
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return _MAPPER_CONVERT_SUCCESS;
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}
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static int
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/*ARGSUSED*/
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_citrus_mapper_parallel_mapper_convert(struct _citrus_mapper * __restrict cm,
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_index_t * __restrict dst, _index_t src,
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void * __restrict ps)
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{
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int ret;
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struct _citrus_mapper_serial *sr;
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struct maplink *ml;
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_index_t tmp;
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_DIAGASSERT(cm && cm->cm_closure);
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sr = cm->cm_closure;
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SIMPLEQ_FOREACH(ml, &sr->sr_mappers, ml_entry) {
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ret = _mapper_convert(ml->ml_mapper, &tmp, src, NULL);
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if (ret == _MAPPER_CONVERT_SUCCESS) {
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*dst = tmp;
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return _MAPPER_CONVERT_SUCCESS;
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} else if (ret == _MAPPER_CONVERT_ILSEQ)
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return _MAPPER_CONVERT_ILSEQ;
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}
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return _MAPPER_CONVERT_NONIDENTICAL;
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}
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static void
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/*ARGSUSED*/
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_citrus_mapper_serial_mapper_init_state(struct _citrus_mapper * __restrict cm,
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void * __restrict ps)
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{
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}
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