1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/libfsserver/lib/files/test_file_accessor.cc Thu Apr 15 23:15:17 2021 +0200
1.3 @@ -0,0 +1,72 @@
1.4 +/*
1.5 + * A test accessor producing generated content.
1.6 + *
1.7 + * Copyright (C) 2021 Paul Boddie <paul@boddie.org.uk>
1.8 + *
1.9 + * This program is free software; you can redistribute it and/or
1.10 + * modify it under the terms of the GNU General Public License as
1.11 + * published by the Free Software Foundation; either version 2 of
1.12 + * the License, or (at your option) any later version.
1.13 + *
1.14 + * This program is distributed in the hope that it will be useful,
1.15 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.17 + * GNU General Public License for more details.
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License
1.20 + * along with this program; if not, write to the Free Software
1.21 + * Foundation, Inc., 51 Franklin Street, Fifth Floor,
1.22 + * Boston, MA 02110-1301, USA
1.23 + */
1.24 +
1.25 +#include <stdio.h>
1.26 +#include <string.h>
1.27 +
1.28 +#include "test_file_accessor.h"
1.29 +
1.30 +TestFileAccessor::TestFileAccessor(fileid_t fileid, offset_t size)
1.31 +: Accessor(fileid, size)
1.32 +{
1.33 +}
1.34 +
1.35 +/* Data transfer helper methods. */
1.36 +
1.37 +void TestFileAccessor::fill_populated(Flexpage *flexpage)
1.38 +{
1.39 + Region *region = flexpage->region;
1.40 + offset_t filepos = flexpage->base_offset;
1.41 +
1.42 + /* Tag the region with file state. */
1.43 +
1.44 + region->fill(fileid, filepos);
1.45 +
1.46 + /* Write some data to each page of the flexpage in each region. This
1.47 + allows each page to be tested regardless of how large each flexpage
1.48 + or region is. */
1.49 +
1.50 + offset_t addr = flexpage->base_addr;
1.51 + offset_t limit = addr + flexpage->size;
1.52 +
1.53 + while (addr < limit)
1.54 + {
1.55 + /* Overwrite enough of any previous data to make the new data
1.56 + readable. */
1.57 +
1.58 + char tag[32];
1.59 +
1.60 + sprintf(tag, "%ld:%ld", fileid, filepos);
1.61 +
1.62 + memset((void *) addr, 0, strlen(tag) + 1);
1.63 + strcpy((char *) addr, tag);
1.64 +
1.65 + filepos += PAGE_SIZE;
1.66 + addr += PAGE_SIZE;
1.67 + }
1.68 +}
1.69 +
1.70 +void TestFileAccessor::flush_populated(Flexpage *flexpage)
1.71 +{
1.72 + flexpage->region->flush();
1.73 +}
1.74 +
1.75 +// vim: tabstop=4 expandtab shiftwidth=4