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-rw-r--r--src/regress/lib/libc/sys/t_clock_gettime.c210
1 files changed, 0 insertions, 210 deletions
diff --git a/src/regress/lib/libc/sys/t_clock_gettime.c b/src/regress/lib/libc/sys/t_clock_gettime.c
deleted file mode 100644
index 11105d2240..0000000000
--- a/src/regress/lib/libc/sys/t_clock_gettime.c
+++ /dev/null
@@ -1,210 +0,0 @@
1/* $OpenBSD: t_clock_gettime.c,v 1.3 2021/12/13 16:56:48 deraadt Exp $ */
2/* $NetBSD: t_clock_gettime.c,v 1.3 2017/01/13 21:30:41 christos Exp $ */
3
4/*-
5 * Copyright (c) 2008 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Frank Kardel.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/*-
34 * Copyright (c) 2006 Frank Kardel
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
47 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
48 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
49 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
50 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
51 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
52 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
53 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
54 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
55 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
56 * POSSIBILITY OF SUCH DAMAGE.
57 */
58
59#include "macros.h"
60
61#include <sys/sysctl.h>
62
63
64#include "atf-c.h"
65#include <errno.h>
66#include <limits.h>
67#include <stdio.h>
68#include <stdint.h>
69#include <stdlib.h>
70#include <string.h>
71#include <time.h>
72#include <unistd.h>
73
74#include "h_macros.h"
75
76#define MINPOSDIFF 15000000 /* 15 ms for now */
77#define TIMEOUT 5
78
79#define TC_HARDWARE "kern.timecounter.hardware"
80#define TC_CHOICE "kern.timecounter.choice"
81
82static void
83check_timecounter(void)
84{
85 struct timespec tsa, tsb, tsl, res;
86 long long mindiff = INTMAX_MAX;
87 time_t endlimit;
88
89#define CL(x) \
90 do { \
91 if ((x) != -1) \
92 break; \
93 atf_tc_fail_nonfatal("%s: %s", #x, strerror(errno)); \
94 return; \
95 } while (0)
96
97 CL(clock_gettime(CLOCK_REALTIME, &tsa));
98 tsl = tsa;
99
100 CL(time(&endlimit));
101 endlimit += TIMEOUT + 1;
102
103 while ((time_t)tsa.tv_sec < endlimit) {
104 long long diff;
105
106 CL(clock_gettime(CLOCK_REALTIME, &tsb));
107 diff = 1000000000LL * (tsb.tv_sec - tsa.tv_sec)
108 + tsb.tv_nsec - tsa.tv_nsec;
109
110 if (diff > 0 && mindiff > diff)
111 mindiff = diff;
112
113 if (diff < 0 || diff > MINPOSDIFF) {
114 long long elapsed;
115 (void)printf("%stime TSA: 0x%jx.%08jx, TSB: 0x%jx.%08jx, "
116 "diff = %lld nsec, ", (diff < 0) ? "BAD " : "",
117 (uintmax_t)tsa.tv_sec, (uintmax_t)tsa.tv_nsec,
118 (uintmax_t)tsb.tv_sec, (uintmax_t)tsb.tv_nsec, diff);
119
120 elapsed = 1000000000LL * (tsb.tv_sec - tsl.tv_sec)
121 + tsb.tv_nsec - tsl.tv_nsec;
122
123
124 (void)printf("%lld nsec\n", elapsed);
125 tsl = tsb;
126
127 ATF_CHECK(diff >= 0);
128 if (diff < 0)
129 return;
130 }
131
132 tsa.tv_sec = tsb.tv_sec;
133 tsa.tv_nsec = tsb.tv_nsec;
134 }
135
136 if (clock_getres(CLOCK_REALTIME, &res) == 0) {
137 long long r = res.tv_sec * 1000000000 + res.tv_nsec;
138
139 (void)printf("Claimed resolution: %lld nsec (%f Hz) or "
140 "better\n", r, 1.0 / r * 1e9);
141 (void)printf("Observed minimum non zero delta: %lld "
142 "nsec\n", mindiff);
143 }
144
145#undef CL
146}
147
148ATF_TC(clock_gettime_real);
149ATF_TC_HEAD(clock_gettime_real, tc)
150{
151 atf_tc_set_md_var(tc, "require.user", "root");
152 atf_tc_set_md_var(tc, "descr",
153 "Checks the monotonicity of the CLOCK_REALTIME implementation");
154 atf_tc_set_md_var(tc, "timeout", "300");
155}
156
157ATF_TC_BODY(clock_gettime_real, tc)
158{
159 char name[128], cbuf[512], ctrbuf[10240];
160 size_t cbufsiz = sizeof(cbuf);
161 size_t ctrbufsiz = sizeof(ctrbuf);
162 const char *p;
163 char *save;
164 int quality, n;
165
166 if (sysctlbyname(TC_HARDWARE, cbuf, &cbufsiz, NULL, 0) != 0) {
167 (void)printf("\nChecking legacy time implementation "
168 "for %d seconds\n", TIMEOUT);
169 check_timecounter();
170 return;
171 /* NOTREACHED */
172 }
173 (void)printf("%s = %s\n", TC_HARDWARE, cbuf);
174 REQUIRE_LIBC(save = strdup(cbuf), NULL);
175
176 RL(sysctlbyname(TC_CHOICE, ctrbuf, &ctrbufsiz, NULL, 0));
177 (void)printf("%s = %s\n", TC_CHOICE, ctrbuf);
178
179 for (p = ctrbuf, n = 0; sscanf(p, "%127[^(](q=%d, f=%*u Hz)%*[ ]%n",
180 name, &quality, &n) == 2; p += n) {
181 struct timespec ts;
182 int ret;
183
184 if (quality < 0)
185 continue;
186
187 (void)printf("\nChecking %s for %d seconds\n", name, TIMEOUT);
188 CHECK_LIBC(ret = sysctlbyname(TC_HARDWARE, NULL, 0,
189 name, strlen(name)), -1);
190 if (ret == -1)
191 continue;
192
193 /* wait a bit to select new counter in clockinterrupt */
194 ts.tv_sec = 0;
195 ts.tv_nsec = 100000000;
196 (void)nanosleep(&ts, NULL);
197
198 check_timecounter();
199 }
200
201 RL(sysctlbyname(TC_HARDWARE, NULL, 0, save, strlen(save)));
202}
203
204ATF_TP_ADD_TCS(tp)
205{
206
207 ATF_TP_ADD_TC(tp, clock_gettime_real);
208
209 return atf_no_error();
210}
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