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author | bluhm <> | 2019-11-19 19:57:04 +0000 |
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committer | bluhm <> | 2019-11-19 19:57:04 +0000 |
commit | ab72e3a6f7e8d5c71bbba034410468781d5923b6 (patch) | |
tree | da100b3712514c566fe948116f7926ad7f725401 /src/regress/lib/libc/sys/t_clock_gettime.c | |
parent | b927c8bafda5c010ea09be8970798ecb83848e85 (diff) | |
download | openbsd-ab72e3a6f7e8d5c71bbba034410468781d5923b6.tar.gz openbsd-ab72e3a6f7e8d5c71bbba034410468781d5923b6.tar.bz2 openbsd-ab72e3a6f7e8d5c71bbba034410468781d5923b6.zip |
Import NetBSD system call regression tests. They were written with
ATF (Automated Testing Framework), so we use a small wrapper to map
it to our bsd.regress.mk framework. Only half of the 80 NetBSD
tests have been taken, the others need more work to adapt. Of them
34 syscall tests pass.
Moritz Buhl ported the tests to OpenBSD.
Diffstat (limited to 'src/regress/lib/libc/sys/t_clock_gettime.c')
-rw-r--r-- | src/regress/lib/libc/sys/t_clock_gettime.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/src/regress/lib/libc/sys/t_clock_gettime.c b/src/regress/lib/libc/sys/t_clock_gettime.c new file mode 100644 index 0000000000..206710799e --- /dev/null +++ b/src/regress/lib/libc/sys/t_clock_gettime.c | |||
@@ -0,0 +1,215 @@ | |||
1 | /* $NetBSD: t_clock_gettime.c,v 1.3 2017/01/13 21:30:41 christos Exp $ */ | ||
2 | |||
3 | /*- | ||
4 | * Copyright (c) 2008 The NetBSD Foundation, Inc. | ||
5 | * All rights reserved. | ||
6 | * | ||
7 | * This code is derived from software contributed to The NetBSD Foundation | ||
8 | * by Frank Kardel. | ||
9 | * | ||
10 | * Redistribution and use in source and binary forms, with or without | ||
11 | * modification, are permitted provided that the following conditions | ||
12 | * are met: | ||
13 | * 1. Redistributions of source code must retain the above copyright | ||
14 | * notice, this list of conditions and the following disclaimer. | ||
15 | * 2. Redistributions in binary form must reproduce the above copyright | ||
16 | * notice, this list of conditions and the following disclaimer in the | ||
17 | * documentation and/or other materials provided with the distribution. | ||
18 | * | ||
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | ||
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | ||
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | ||
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
29 | * POSSIBILITY OF SUCH DAMAGE. | ||
30 | */ | ||
31 | |||
32 | /*- | ||
33 | * Copyright (c) 2006 Frank Kardel | ||
34 | * All rights reserved. | ||
35 | * | ||
36 | * Redistribution and use in source and binary forms, with or without | ||
37 | * modification, are permitted provided that the following conditions | ||
38 | * are met: | ||
39 | * 1. Redistributions of source code must retain the above copyright | ||
40 | * notice, this list of conditions and the following disclaimer. | ||
41 | * 2. Redistributions in binary form must reproduce the above copyright | ||
42 | * notice, this list of conditions and the following disclaimer in the | ||
43 | * documentation and/or other materials provided with the distribution. | ||
44 | * | ||
45 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | ||
46 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | ||
47 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
48 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | ||
49 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
50 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
51 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
52 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
53 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
54 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
55 | * POSSIBILITY OF SUCH DAMAGE. | ||
56 | */ | ||
57 | |||
58 | #include "macros.h" | ||
59 | |||
60 | #include <sys/cdefs.h> | ||
61 | __COPYRIGHT("@(#) Copyright (c) 2008\ | ||
62 | The NetBSD Foundation, inc. All rights reserved."); | ||
63 | __RCSID("$NetBSD: t_clock_gettime.c,v 1.3 2017/01/13 21:30:41 christos Exp $"); | ||
64 | |||
65 | #include <sys/param.h> | ||
66 | #include <sys/sysctl.h> | ||
67 | |||
68 | |||
69 | #include "atf-c.h" | ||
70 | #include <errno.h> | ||
71 | #include <limits.h> | ||
72 | #include <stdio.h> | ||
73 | #include <stdint.h> | ||
74 | #include <stdlib.h> | ||
75 | #include <string.h> | ||
76 | #include <time.h> | ||
77 | #include <unistd.h> | ||
78 | |||
79 | #include "h_macros.h" | ||
80 | |||
81 | #define MINPOSDIFF 15000000 /* 15 ms for now */ | ||
82 | #define TIMEOUT 5 | ||
83 | |||
84 | #define TC_HARDWARE "kern.timecounter.hardware" | ||
85 | #define TC_CHOICE "kern.timecounter.choice" | ||
86 | |||
87 | static void | ||
88 | check_timecounter(void) | ||
89 | { | ||
90 | struct timespec tsa, tsb, tsl, res; | ||
91 | long long mindiff = INTMAX_MAX; | ||
92 | time_t endlimit; | ||
93 | |||
94 | #define CL(x) \ | ||
95 | do { \ | ||
96 | if ((x) != -1) \ | ||
97 | break; \ | ||
98 | atf_tc_fail_nonfatal("%s: %s", #x, strerror(errno)); \ | ||
99 | return; \ | ||
100 | } while (0) | ||
101 | |||
102 | CL(clock_gettime(CLOCK_REALTIME, &tsa)); | ||
103 | tsl = tsa; | ||
104 | |||
105 | CL(time(&endlimit)); | ||
106 | endlimit += TIMEOUT + 1; | ||
107 | |||
108 | while ((time_t)tsa.tv_sec < endlimit) { | ||
109 | long long diff; | ||
110 | |||
111 | CL(clock_gettime(CLOCK_REALTIME, &tsb)); | ||
112 | diff = 1000000000LL * (tsb.tv_sec - tsa.tv_sec) | ||
113 | + tsb.tv_nsec - tsa.tv_nsec; | ||
114 | |||
115 | if (diff > 0 && mindiff > diff) | ||
116 | mindiff = diff; | ||
117 | |||
118 | if (diff < 0 || diff > MINPOSDIFF) { | ||
119 | long long elapsed; | ||
120 | (void)printf("%stime TSA: 0x%jx.%08jx, TSB: 0x%jx.%08jx, " | ||
121 | "diff = %lld nsec, ", (diff < 0) ? "BAD " : "", | ||
122 | (uintmax_t)tsa.tv_sec, (uintmax_t)tsa.tv_nsec, | ||
123 | (uintmax_t)tsb.tv_sec, (uintmax_t)tsb.tv_nsec, diff); | ||
124 | |||
125 | elapsed = 1000000000LL * (tsb.tv_sec - tsl.tv_sec) | ||
126 | + tsb.tv_nsec - tsl.tv_nsec; | ||
127 | |||
128 | |||
129 | (void)printf("%lld nsec\n", elapsed); | ||
130 | tsl = tsb; | ||
131 | |||
132 | ATF_CHECK(diff >= 0); | ||
133 | if (diff < 0) | ||
134 | return; | ||
135 | } | ||
136 | |||
137 | tsa.tv_sec = tsb.tv_sec; | ||
138 | tsa.tv_nsec = tsb.tv_nsec; | ||
139 | } | ||
140 | |||
141 | if (clock_getres(CLOCK_REALTIME, &res) == 0) { | ||
142 | long long r = res.tv_sec * 1000000000 + res.tv_nsec; | ||
143 | |||
144 | (void)printf("Claimed resolution: %lld nsec (%f Hz) or " | ||
145 | "better\n", r, 1.0 / r * 1e9); | ||
146 | (void)printf("Observed minimum non zero delta: %lld " | ||
147 | "nsec\n", mindiff); | ||
148 | } | ||
149 | |||
150 | #undef CL | ||
151 | } | ||
152 | |||
153 | ATF_TC(clock_gettime_real); | ||
154 | ATF_TC_HEAD(clock_gettime_real, tc) | ||
155 | { | ||
156 | atf_tc_set_md_var(tc, "require.user", "root"); | ||
157 | atf_tc_set_md_var(tc, "descr", | ||
158 | "Checks the monotonicity of the CLOCK_REALTIME implementation"); | ||
159 | atf_tc_set_md_var(tc, "timeout", "300"); | ||
160 | } | ||
161 | |||
162 | ATF_TC_BODY(clock_gettime_real, tc) | ||
163 | { | ||
164 | char name[128], cbuf[512], ctrbuf[10240]; | ||
165 | size_t cbufsiz = sizeof(cbuf); | ||
166 | size_t ctrbufsiz = sizeof(ctrbuf); | ||
167 | const char *p; | ||
168 | char *save; | ||
169 | int quality, n; | ||
170 | |||
171 | if (sysctlbyname(TC_HARDWARE, cbuf, &cbufsiz, NULL, 0) != 0) { | ||
172 | (void)printf("\nChecking legacy time implementation " | ||
173 | "for %d seconds\n", TIMEOUT); | ||
174 | check_timecounter(); | ||
175 | return; | ||
176 | /* NOTREACHED */ | ||
177 | } | ||
178 | (void)printf("%s = %s\n", TC_HARDWARE, cbuf); | ||
179 | REQUIRE_LIBC(save = strdup(cbuf), NULL); | ||
180 | |||
181 | RL(sysctlbyname(TC_CHOICE, ctrbuf, &ctrbufsiz, NULL, 0)); | ||
182 | (void)printf("%s = %s\n", TC_CHOICE, ctrbuf); | ||
183 | |||
184 | for (p = ctrbuf, n = 0; sscanf(p, "%127[^(](q=%d, f=%*u Hz)%*[ ]%n", | ||
185 | name, &quality, &n) == 2; p += n) { | ||
186 | struct timespec ts; | ||
187 | int ret; | ||
188 | |||
189 | if (quality < 0) | ||
190 | continue; | ||
191 | |||
192 | (void)printf("\nChecking %s for %d seconds\n", name, TIMEOUT); | ||
193 | CHECK_LIBC(ret = sysctlbyname(TC_HARDWARE, NULL, 0, | ||
194 | name, strlen(name)), -1); | ||
195 | if (ret == -1) | ||
196 | continue; | ||
197 | |||
198 | /* wait a bit to select new counter in clockinterrupt */ | ||
199 | ts.tv_sec = 0; | ||
200 | ts.tv_nsec = 100000000; | ||
201 | (void)nanosleep(&ts, NULL); | ||
202 | |||
203 | check_timecounter(); | ||
204 | } | ||
205 | |||
206 | RL(sysctlbyname(TC_HARDWARE, NULL, 0, save, strlen(save))); | ||
207 | } | ||
208 | |||
209 | ATF_TP_ADD_TCS(tp) | ||
210 | { | ||
211 | |||
212 | ATF_TP_ADD_TC(tp, clock_gettime_real); | ||
213 | |||
214 | return atf_no_error(); | ||
215 | } | ||