diff options
Diffstat (limited to 'contrib/netbsd-tests/lib/libc/db/h_lfsr.c')
| -rw-r--r-- | contrib/netbsd-tests/lib/libc/db/h_lfsr.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libc/db/h_lfsr.c b/contrib/netbsd-tests/lib/libc/db/h_lfsr.c new file mode 100644 index 0000000..3f3d712 --- /dev/null +++ b/contrib/netbsd-tests/lib/libc/db/h_lfsr.c @@ -0,0 +1,179 @@ +/*- + * Copyright (c) 2015 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Christos Zoulas. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR 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. + */ +#include <sys/cdefs.h> +__RCSID("$NetBSD: h_lfsr.c,v 1.1 2015/11/18 18:35:35 christos Exp $"); + +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <err.h> +#include <string.h> +#include <unistd.h> +#include <db.h> + +#define MAXKEY 0xffff +#ifdef DEBUG +#define DPRINTF(...) printf(__VA_ARGS__) +#else +#define DPRINTF(...) +#endif + +static uint16_t +next(uint16_t *cur) +{ + uint16_t lsb = *cur & 1; + *cur >>= 1; + *cur ^= (-lsb) & 0xB400u; + return *cur; +} + +int +main(int argc, char *argv[]) +{ + char buf[65536]; + char kb[256]; + DBT key, val; + DB *db; + HASHINFO hi; + uint8_t c; + uint16_t len; + uint32_t pagesize = atoi(argv[1]); + + memset(&hi, 0, sizeof(hi)); + memset(buf, 'a', sizeof(buf)); + hi.bsize = pagesize; + hi.nelem = 65536; + hi.ffactor = 128; + + key.data = kb; + val.data = buf; + + db = dbopen(NULL, O_CREAT|O_TRUNC|O_RDWR, 0, DB_HASH, &hi); + if (db == NULL) + err(EXIT_FAILURE, "dbopen"); + + len = 0xaec1; + for (size_t i = 0; i < MAXKEY; i++) { + key.size = (len & 0xff) + 1; + c = len >> 8; + memset(kb, c, key.size); + val.size = (next(&len) & 0xff) + 1; + switch ((*db->put)(db, &key, &val, R_NOOVERWRITE)) { + case 0: + DPRINTF("put %zu %zu %#x\n", + key.size, val.size, c); + break; + case -1: + err(EXIT_FAILURE, "put error %zu %zu %#x", + key.size, val.size, c); + case 1: + errx(EXIT_FAILURE, "put overwrite %zu %zu %#x", + key.size, val.size, c); + default: + abort(); + } + } + + len = 0xaec1; + for (size_t i = 0; i < MAXKEY; i++) { + key.size = (len & 0xff) + 1; + c = len >> 8; + memset(kb, c, key.size); + next(&len); + switch ((*db->get)(db, &key, &val, 0)) { + case 0: + DPRINTF("get %zu %zu %#x\n", + key.size, val.size, c); + break; + case -1: + err(EXIT_FAILURE, "get %zu %zu %#x", + key.size, val.size, c); + case 1: + errx(EXIT_FAILURE, "get not found %zu %zu %#x", + key.size, val.size, c); + default: + abort(); + } + if (memcmp(key.data, kb, key.size) != 0) + errx(EXIT_FAILURE, "get badkey %zu %zu %#x", + key.size, val.size, c); + if (val.size != (len & 0xff) + 1U) + errx(EXIT_FAILURE, "get badvallen %zu %zu %#x", + key.size, val.size, c); + if (memcmp(val.data, buf, val.size) != 0) + errx(EXIT_FAILURE, "get badval %zu %zu %#x", + key.size, val.size, c); + } + + len = 0xaec1; + for (size_t i = 0; i < MAXKEY; i++) { + key.size = (len & 0xff) + 1; + c = len >> 8; + memset(kb, c, key.size); + next(&len); + switch ((*db->del)(db, &key, 0)) { + case 0: + DPRINTF("del %zu %zu %#x\n", + key.size, val.size, c); + break; + case -1: + err(EXIT_FAILURE, "del %zu %zu %#x", key.size, + val.size, c); + case 1: + errx(EXIT_FAILURE, "del not found %zu %zu %#x", + key.size, val.size, c); + default: + abort(); + } + } + + len = 0xaec1; + for (size_t i = 0; i < MAXKEY; i++) { + key.size = (len & 0xff) + 1; + c = len >> 8; + memset(kb, c, key.size); + next(&len); + switch ((*db->get)(db, &key, &val, 0)) { + case 0: + errx(EXIT_FAILURE, "get2 found %zu %zu %#x", + key.size, val.size, c); + break; + case -1: + err(EXIT_FAILURE, "get2 %zu %zu %#x", + key.size, val.size, c); + case 1: + DPRINTF("get2 %zu %zu %#x\n", + key.size, val.size, c); + break; + default: + abort(); + } + } + return 0; +} |
