94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
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/* $NetBSD: t_randomid.c,v 1.3 2011/07/07 09:49:59 jruoho Exp $ */
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/*-
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* Copyright (c) 2010 The NetBSD Foundation, Inc.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS 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 PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <atf-c.h>
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#include <sys/types.h>
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#include <assert.h>
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#include <inttypes.h>
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#include <randomid.h>
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#include <stdio.h>
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#include <string.h>
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#define PERIOD 30000
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uint64_t last[65536];
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ATF_TC(randomid_basic);
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ATF_TC_HEAD(randomid_basic, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Check randomid(3)");
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}
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ATF_TC_BODY(randomid_basic, tc)
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{
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static randomid_t ctx = NULL;
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uint64_t lowest, n, diff;
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uint16_t id;
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memset(last, 0, sizeof(last));
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ctx = randomid_new(16, (long)3600);
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lowest = UINT64_MAX;
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for (n = 0; n < 1000000; n++) {
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id = randomid(ctx);
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if (last[id] > 0) {
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diff = n - last[id];
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if (diff <= lowest) {
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if (lowest != UINT64_MAX)
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printf("id %5d: last call at %9"PRIu64
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", current call %9"PRIu64
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" (diff %5"PRIu64"), "
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"lowest %"PRIu64"\n",
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id, last[id], n, diff, lowest);
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ATF_REQUIRE_MSG(diff >= PERIOD,
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"diff (%"PRIu64") less than minimum "
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"period (%d)", diff, PERIOD);
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lowest = diff;
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}
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}
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last[id] = n;
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}
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, randomid_basic);
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return atf_no_error();
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}
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