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88cb3de1 |
1 | #!./perl -w |
2 | |
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3 | BEGIN { |
3f2ee006 |
4 | if ($ENV{PERL_CORE}) { |
5 | chdir 't' if -d 't'; |
6 | @INC = '../lib'; |
7 | } |
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8 | } |
9 | |
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10 | BEGIN { $| = 1; print "1..25\n"; } |
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11 | |
12 | END {print "not ok 1\n" unless $loaded;} |
13 | |
14 | use Time::HiRes qw(tv_interval); |
15 | |
16 | $loaded = 1; |
17 | |
18 | print "ok 1\n"; |
19 | |
20 | use strict; |
21 | |
22 | my $have_gettimeofday = defined &Time::HiRes::gettimeofday; |
23 | my $have_usleep = defined &Time::HiRes::usleep; |
24 | my $have_ualarm = defined &Time::HiRes::ualarm; |
c9ff6e92 |
25 | my $have_time = defined &Time::HiRes::time; |
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26 | |
27 | import Time::HiRes 'gettimeofday' if $have_gettimeofday; |
28 | import Time::HiRes 'usleep' if $have_usleep; |
29 | import Time::HiRes 'ualarm' if $have_ualarm; |
30 | |
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31 | use Config; |
32 | |
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33 | my $have_alarm = $Config{d_alarm}; |
34 | my $have_fork = $Config{d_fork}; |
35 | my $waitfor = 60; # 10 seconds is normal. |
36 | my $pid; |
37 | |
38 | if ($have_fork) { |
39 | print "# Testing process $$\n"; |
40 | print "# Starting the timer process\n"; |
41 | if (defined ($pid = fork())) { |
42 | if ($pid == 0) { # We are the kid, set up the timer. |
43 | print "# Timer process $$\n"; |
44 | sleep($waitfor); |
b4c5c611 |
45 | warn "\n$0: overall time allowed for tests (${waitfor}s) exceeded\n"; |
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46 | print "# Terminating the testing process\n"; |
47 | kill('TERM', getppid()); |
48 | print "# Timer process exiting\n"; |
49 | exit(0); |
50 | } |
51 | } else { |
52 | warn "$0: fork failed: $!\n"; |
53 | } |
54 | } else { |
55 | print "# No timer process\n"; |
56 | } |
57 | |
12724655 |
58 | my $xdefine = ''; |
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59 | |
60 | if (open(XDEFINE, "xdefine")) { |
61 | chomp($xdefine = <XDEFINE>); |
62 | close(XDEFINE); |
63 | } |
64 | |
0740bb5b |
65 | # Ideally, we'd like to test that the timers are rather precise. |
66 | # However, if the system is busy, there are no guarantees on how |
67 | # quickly we will return. This limit used to be 10%, but that |
68 | # was occasionally triggered falsely. |
69 | # Try 20%. |
70 | # Another possibility might be to print "ok" if the test completes fine |
71 | # with (say) 10% slosh, "skip - system may have been busy?" if the test |
72 | # completes fine with (say) 30% slosh, and fail otherwise. If you do that, |
73 | # consider changing over to test.pl at the same time. |
74 | # --A.D., Nov 27, 2001 |
75 | my $limit = 0.20; # 20% is acceptable slosh for testing timers |
76 | |
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77 | sub skip { |
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78 | map { print "ok $_ # skipped\n" } @_; |
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79 | } |
80 | |
81 | sub ok { |
82 | my ($n, $result, @info) = @_; |
83 | if ($result) { |
84 | print "ok $n\n"; |
85 | } |
86 | else { |
87 | print "not ok $n\n"; |
88 | print "# @info\n" if @info; |
89 | } |
90 | } |
91 | |
92 | if (!$have_gettimeofday) { |
93 | skip 2..6; |
94 | } |
95 | else { |
96 | my @one = gettimeofday(); |
97 | ok 2, @one == 2, 'gettimeofday returned ', 0+@one, ' args'; |
98 | ok 3, $one[0] > 850_000_000, "@one too small"; |
99 | |
100 | sleep 1; |
101 | |
102 | my @two = gettimeofday(); |
103 | ok 4, ($two[0] > $one[0] || ($two[0] == $one[0] && $two[1] > $one[1])), |
104 | "@two is not greater than @one"; |
105 | |
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106 | my $f = Time::HiRes::time(); |
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107 | ok 5, $f > 850_000_000, "$f too small"; |
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108 | ok 6, $f - $two[0] < 2, "$f - $two[0] >= 2"; |
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109 | } |
110 | |
111 | if (!$have_usleep) { |
112 | skip 7..8; |
113 | } |
114 | else { |
115 | my $one = time; |
116 | usleep(10_000); |
117 | my $two = time; |
118 | usleep(10_000); |
119 | my $three = time; |
120 | ok 7, $one == $two || $two == $three, "slept too long, $one $two $three"; |
121 | |
122 | if (!$have_gettimeofday) { |
123 | skip 8; |
124 | } |
125 | else { |
c9ff6e92 |
126 | my $f = Time::HiRes::time(); |
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127 | usleep(500_000); |
c9ff6e92 |
128 | my $f2 = Time::HiRes::time(); |
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129 | my $d = $f2 - $f; |
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130 | ok 8, $d > 0.4 && $d < 0.9, "slept $d secs $f to $f2"; |
dcf686c9 |
131 | } |
132 | } |
133 | |
134 | # Two-arg tv_interval() is always available. |
135 | { |
136 | my $f = tv_interval [5, 100_000], [10, 500_000]; |
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137 | ok 9, abs($f - 5.4) < 0.001, $f; |
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138 | } |
139 | |
140 | if (!$have_gettimeofday) { |
141 | skip 10; |
142 | } |
143 | else { |
144 | my $r = [gettimeofday()]; |
145 | my $f = tv_interval $r; |
146 | ok 10, $f < 2, $f; |
147 | } |
148 | |
c9ff6e92 |
149 | if (!$have_usleep || !$have_gettimeofday) { |
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150 | skip 11; |
151 | } |
152 | else { |
153 | my $r = [gettimeofday()]; |
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154 | Time::HiRes::sleep( 0.5 ); |
155 | my $f = tv_interval $r; |
0740bb5b |
156 | ok 11, $f > 0.4 && $f < 0.9, "slept $f instead of 0.5 secs."; |
dcf686c9 |
157 | } |
158 | |
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159 | if (!$have_ualarm || !$have_alarm) { |
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160 | skip 12..13; |
161 | } |
162 | else { |
163 | my $tick = 0; |
164 | local $SIG{ALRM} = sub { $tick++ }; |
165 | |
3f2ee006 |
166 | my $one = time; $tick = 0; ualarm(10_000); while ($tick == 0) { sleep } |
167 | my $two = time; $tick = 0; ualarm(10_000); while ($tick == 0) { sleep } |
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168 | my $three = time; |
169 | ok 12, $one == $two || $two == $three, "slept too long, $one $two $three"; |
170 | |
171 | $tick = 0; |
172 | ualarm(10_000, 10_000); |
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173 | while ($tick < 3) { sleep } |
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174 | ok 13, 1; |
175 | ualarm(0); |
176 | } |
177 | |
178 | # new test: did we even get close? |
179 | |
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180 | if (!$have_time) { |
181 | skip 14 |
182 | } else { |
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183 | my ($s, $n); |
184 | for my $i (1 .. 100) { |
185 | $s += Time::HiRes::time() - time(); |
186 | $n++; |
64cc9c1c |
187 | } |
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188 | # $s should be, at worst, equal to $n |
189 | # (time() may be rounding down, up, or closest) |
190 | ok 14, abs($s) / $n <= 1.0, "Time::HiRes::time() not close to time()"; |
191 | print "# s = $s, n = $n, s/n = ", $s/$n, "\n"; |
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192 | } |
193 | |
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194 | my $has_ualarm = $Config{d_ualarm}; |
195 | |
196 | $has_ualarm ||= $xdefine =~ /-DHAS_UALARM/; |
197 | |
198 | unless ( defined &Time::HiRes::gettimeofday |
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199 | && defined &Time::HiRes::ualarm |
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200 | && defined &Time::HiRes::usleep |
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201 | && $has_ualarm) { |
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202 | for (15..17) { |
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203 | print "ok $_ # Skip: no gettimeofday or no ualarm or no usleep\n"; |
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204 | } |
205 | } else { |
206 | use Time::HiRes qw (time alarm sleep); |
207 | |
cb203acc |
208 | my ($f, $r, $i, $not, $ok); |
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209 | |
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210 | $f = time; |
add58217 |
211 | print "# time...$f\n"; |
212 | print "ok 15\n"; |
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213 | |
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214 | $r = [Time::HiRes::gettimeofday()]; |
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215 | sleep (0.5); |
add58217 |
216 | print "# sleep...", Time::HiRes::tv_interval($r), "\nok 16\n"; |
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217 | |
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218 | $r = [Time::HiRes::gettimeofday()]; |
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219 | $i = 5; |
220 | $SIG{ALRM} = "tick"; |
6ea166ef |
221 | while ($i > 0) |
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222 | { |
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223 | alarm(0.3); |
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224 | select (undef, undef, undef, 3); |
225 | my $ival = Time::HiRes::tv_interval ($r); |
226 | print "# Select returned! $i $ival\n"; |
cb203acc |
227 | print "# ", abs($ival/3 - 1), "\n"; |
228 | # Whether select() gets restarted after signals is |
229 | # implementation dependent. If it is restarted, we |
230 | # will get about 3.3 seconds: 3 from the select, 0.3 |
231 | # from the alarm. If this happens, let's just skip |
232 | # this particular test. --jhi |
233 | if (abs($ival/3.3 - 1) < $limit) { |
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234 | $ok = "Skip: your select() may get restarted by your SIGALRM (or just retry test)"; |
cb203acc |
235 | undef $not; |
236 | last; |
237 | } |
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238 | my $exp = 0.3 * (5 - $i); |
0740bb5b |
239 | # This test is more sensitive, so impose a softer limit. |
cb203acc |
240 | if (abs($ival/$exp - 1) > 3*$limit) { |
0740bb5b |
241 | my $ratio = abs($ival/$exp); |
242 | $not = "while: $exp sleep took $ival ratio $ratio"; |
c7f7de79 |
243 | last; |
244 | } |
cb203acc |
245 | $ok = $i; |
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246 | } |
247 | |
248 | sub tick |
249 | { |
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250 | $i--; |
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251 | my $ival = Time::HiRes::tv_interval ($r); |
252 | print "# Tick! $i $ival\n"; |
253 | my $exp = 0.3 * (5 - $i); |
0740bb5b |
254 | # This test is more sensitive, so impose a softer limit. |
cb203acc |
255 | if (abs($ival/$exp - 1) > 3*$limit) { |
0740bb5b |
256 | my $ratio = abs($ival/$exp); |
257 | $not = "tick: $exp sleep took $ival ratio $ratio"; |
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258 | $i = 0; |
259 | } |
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260 | } |
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261 | |
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262 | alarm(0); # can't cancel usig %SIG |
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263 | |
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264 | print $not ? "not ok 17 # $not\n" : "ok 17 # $ok\n"; |
dcf686c9 |
265 | } |
266 | |
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267 | unless ( defined &Time::HiRes::setitimer |
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268 | && defined &Time::HiRes::getitimer |
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269 | && eval 'Time::HiRes::ITIMER_VIRTUAL' |
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270 | && $Config{d_select} |
271 | && $Config{sig_name} =~ m/\bVTALRM\b/) { |
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272 | for (18..19) { |
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273 | print "ok $_ # Skip: no virtual interval timers\n"; |
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274 | } |
275 | } else { |
276 | use Time::HiRes qw (setitimer getitimer ITIMER_VIRTUAL); |
277 | |
278 | my $i = 3; |
c9ff6e92 |
279 | my $r = [Time::HiRes::gettimeofday()]; |
3c72ec00 |
280 | |
281 | $SIG{VTALRM} = sub { |
282 | $i ? $i-- : setitimer(ITIMER_VIRTUAL, 0); |
283 | print "# Tick! $i ", Time::HiRes::tv_interval($r), "\n"; |
284 | }; |
285 | |
0e172911 |
286 | print "# setitimer: ", join(" ", setitimer(ITIMER_VIRTUAL, 0.5, 0.4)), "\n"; |
287 | |
0740bb5b |
288 | # Assume interval timer granularity of $limit * 0.5 seconds. Too bold? |
4ed0e2d4 |
289 | my $virt = getitimer(ITIMER_VIRTUAL); |
290 | print "not " unless defined $virt && abs($virt / 0.5) - 1 < $limit; |
0e172911 |
291 | print "ok 18\n"; |
3c72ec00 |
292 | |
293 | print "# getitimer: ", join(" ", getitimer(ITIMER_VIRTUAL)), "\n"; |
294 | |
1c41c9bf |
295 | while (getitimer(ITIMER_VIRTUAL)) { |
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296 | my $j; |
297 | for (1..1000) { $j++ } # Can't be unbreakable, must test getitimer(). |
3c72ec00 |
298 | } |
299 | |
300 | print "# getitimer: ", join(" ", getitimer(ITIMER_VIRTUAL)), "\n"; |
301 | |
4ed0e2d4 |
302 | $virt = getitimer(ITIMER_VIRTUAL); |
303 | print "not " unless defined $virt && $virt == 0; |
0e172911 |
304 | print "ok 19\n"; |
305 | |
3c72ec00 |
306 | $SIG{VTALRM} = 'DEFAULT'; |
307 | } |
308 | |
9c735d59 |
309 | if ($have_gettimeofday) { |
310 | my ($t0, $td); |
52d72fba |
311 | |
9c735d59 |
312 | my $sleep = 1.5; # seconds |
9c735d59 |
313 | my $msg; |
314 | |
315 | $t0 = gettimeofday(); |
316 | $a = abs(sleep($sleep) / $sleep - 1.0); |
317 | $td = gettimeofday() - $t0; |
0740bb5b |
318 | my $ratio = 1.0 + $a; |
9c735d59 |
319 | |
0740bb5b |
320 | $msg = "$td went by while sleeping $sleep, ratio $ratio.\n"; |
9c735d59 |
321 | |
322 | if ($td < $sleep * (1 + $limit)) { |
323 | print $a < $limit ? "ok 20 # $msg" : "not ok 20 # $msg"; |
324 | } else { |
325 | print "ok 20 # Skip: $msg"; |
326 | } |
327 | |
328 | $t0 = gettimeofday(); |
329 | $a = abs(usleep($sleep * 1E6) / ($sleep * 1E6) - 1.0); |
330 | $td = gettimeofday() - $t0; |
0740bb5b |
331 | $ratio = 1.0 + $a; |
9c735d59 |
332 | |
0740bb5b |
333 | $msg = "$td went by while sleeping $sleep, ratio $ratio.\n"; |
9c735d59 |
334 | |
335 | if ($td < $sleep * (1 + $limit)) { |
336 | print $a < $limit ? "ok 21 # $msg" : "not ok 21 # $msg"; |
337 | } else { |
338 | print "ok 21 # Skip: $msg"; |
339 | } |
340 | |
341 | } else { |
342 | for (20..21) { |
343 | print "ok $_ # Skip: no gettimeofday\n"; |
344 | } |
345 | } |
52d72fba |
346 | |
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347 | eval { sleep(-1) }; |
348 | print $@ =~ /::sleep\(-1\): negative time not invented yet/ ? |
349 | "ok 22\n" : "not ok 22\n"; |
350 | |
351 | eval { usleep(-2) }; |
352 | print $@ =~ /::usleep\(-2\): negative time not invented yet/ ? |
353 | "ok 23\n" : "not ok 23\n"; |
354 | |
ec77158c |
355 | if ($have_ualarm) { |
c46d5038 |
356 | eval { alarm(-3) }; |
357 | print $@ =~ /::alarm\(-3, 0\): negative time not invented yet/ ? |
358 | "ok 24\n" : "not ok 24\n"; |
359 | |
ec77158c |
360 | eval { ualarm(-4) }; |
361 | print $@ =~ /::ualarm\(-4, 0\): negative time not invented yet/ ? |
f7916ddb |
362 | "ok 25\n" : "not ok 25\n"; |
ec77158c |
363 | } else { |
c46d5038 |
364 | skip 24; |
ec77158c |
365 | skip 25; |
366 | } |
690f7c5f |
367 | |
368 | if (defined $pid) { |
369 | print "# Terminating the timer process $pid\n"; |
370 | kill('TERM', $pid); # We are done, the timer can go. |
371 | } |
372 | |