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