+#!./perl -w
+
BEGIN {
- chdir 't' if -d 't';
- @INC = '../lib';
+ if ($ENV{PERL_CORE}) {
+ chdir 't' if -d 't';
+ @INC = '../lib';
+ }
}
BEGIN { $| = 1; print "1..25\n"; }
use Config;
+my $xdefine = '';
+
+if (open(XDEFINE, "xdefine")) {
+ chomp($xdefine = <XDEFINE>);
+ close(XDEFINE);
+}
+
+# Ideally, we'd like to test that the timers are rather precise.
+# However, if the system is busy, there are no guarantees on how
+# quickly we will return. This limit used to be 10%, but that
+# was occasionally triggered falsely.
+# Try 20%.
+# Another possibility might be to print "ok" if the test completes fine
+# with (say) 10% slosh, "skip - system may have been busy?" if the test
+# completes fine with (say) 30% slosh, and fail otherwise. If you do that,
+# consider changing over to test.pl at the same time.
+# --A.D., Nov 27, 2001
+my $limit = 0.20; # 20% is acceptable slosh for testing timers
+
sub skip {
- map { print "ok $_ (skipped)\n" } @_;
+ map { print "ok $_ # skipped\n" } @_;
}
sub ok {
my $f = Time::HiRes::time();
ok 5, $f > 850_000_000, "$f too small";
- ok 6, $f - $two[0] < 2, "$f - @two >= 2";
+ ok 6, $f - $two[0] < 2, "$f - $two[0] >= 2";
}
if (!$have_usleep) {
usleep(500_000);
my $f2 = Time::HiRes::time();
my $d = $f2 - $f;
- ok 8, $d > 0.4 && $d < 0.8, "slept $d secs $f to $f2";
+ ok 8, $d > 0.4 && $d < 0.9, "slept $d secs $f to $f2";
}
}
}
else {
my $r = [gettimeofday()];
- #jTime::HiRes::sleep 0.5;
Time::HiRes::sleep( 0.5 );
my $f = tv_interval $r;
- ok 11, $f > 0.4 && $f < 0.8, "slept $f secs";
+ ok 11, $f > 0.4 && $f < 0.9, "slept $f instead of 0.5 secs.";
}
if (!$have_ualarm) {
my $tick = 0;
local $SIG{ALRM} = sub { $tick++ };
- my $one = time; $tick = 0; ualarm(10_000); sleep until $tick;
- my $two = time; $tick = 0; ualarm(10_000); sleep until $tick;
+ my $one = time; $tick = 0; ualarm(10_000); while ($tick == 0) { sleep }
+ my $two = time; $tick = 0; ualarm(10_000); while ($tick == 0) { sleep }
my $three = time;
ok 12, $one == $two || $two == $three, "slept too long, $one $two $three";
$tick = 0;
ualarm(10_000, 10_000);
- sleep until $tick >= 3;
+ while ($tick < 3) { sleep }
ok 13, 1;
ualarm(0);
}
if (!$have_time) {
skip 14
} else {
- my ($t1, $tf, $t2);
- for my $i (1 .. 20) {
- $t1 = time();
- $tf = Time::HiRes::time();
- $t2 = 1 + time();
- last if (($t2 - $t1) <= 1) && $t1 <= $tf;
+ my ($s, $n);
+ for my $i (1 .. 100) {
+ $s += Time::HiRes::time() - time();
+ $n++;
}
- ok 14, (($t1 <= $tf) && ($tf <= $t2)),
- "Time::HiRes::time $tf not bracketed by [$t1, $t2]";
-
+ # $s should be, at worst, equal to $n
+ # (time() may be rounding down, up, or closest)
+ ok 14, abs($s) / $n <= 1.0, "Time::HiRes::time() not close to time()";
+ print "# s = $s, n = $n, s/n = ", $s/$n, "\n";
}
-unless (defined &Time::HiRes::gettimeofday
+my $has_ualarm = $Config{d_ualarm};
+
+$has_ualarm ||= $xdefine =~ /-DHAS_UALARM/;
+
+unless ( defined &Time::HiRes::gettimeofday
&& defined &Time::HiRes::ualarm
- && defined &Time::HiRes::usleep) {
+ && defined &Time::HiRes::usleep
+ && $has_ualarm) {
for (15..17) {
- print "ok $_ # skipped\n";
+ print "ok $_ # Skip: no gettimeofday or no ualarm or no usleep\n";
}
} else {
use Time::HiRes qw (time alarm sleep);
- my ($f, $r, $i);
+ my ($f, $r, $i, $not, $ok);
$f = time;
print "# time...$f\n";
while ($i > 0)
{
alarm(0.3);
- select (undef, undef, undef, 10);
- print "# Select returned! $i ", Time::HiRes::tv_interval ($r), "\n";
+ select (undef, undef, undef, 3);
+ my $ival = Time::HiRes::tv_interval ($r);
+ print "# Select returned! $i $ival\n";
+ print "# ", abs($ival/3 - 1), "\n";
+ # Whether select() gets restarted after signals is
+ # implementation dependent. If it is restarted, we
+ # will get about 3.3 seconds: 3 from the select, 0.3
+ # from the alarm. If this happens, let's just skip
+ # this particular test. --jhi
+ if (abs($ival/3.3 - 1) < $limit) {
+ $ok = "Skip: your select() may get restarted by your SIGALRM (or just retry test)";
+ undef $not;
+ last;
+ }
+ my $exp = 0.3 * (5 - $i);
+ # This test is more sensitive, so impose a softer limit.
+ if (abs($ival/$exp - 1) > 3*$limit) {
+ my $ratio = abs($ival/$exp);
+ $not = "while: $exp sleep took $ival ratio $ratio";
+ last;
+ }
+ $ok = $i;
}
sub tick
{
$i--;
- print "# Tick! $i ", Time::HiRes::tv_interval ($r), "\n";
+ my $ival = Time::HiRes::tv_interval ($r);
+ print "# Tick! $i $ival\n";
+ my $exp = 0.3 * (5 - $i);
+ # This test is more sensitive, so impose a softer limit.
+ if (abs($ival/$exp - 1) > 3*$limit) {
+ my $ratio = abs($ival/$exp);
+ $not = "tick: $exp sleep took $ival ratio $ratio";
+ $i = 0;
+ }
}
+
alarm(0); # can't cancel usig %SIG
- print "ok 17\n";
+ print $not ? "not ok 17 # $not\n" : "ok 17 # $ok\n";
}
-unless (defined &Time::HiRes::setitimer
+unless ( defined &Time::HiRes::setitimer
&& defined &Time::HiRes::getitimer
- && exists &Time::HiRes::ITIMER_VIRTUAL
+ && eval 'Time::HiRes::ITIMER_VIRTUAL'
&& $Config{d_select}
&& $Config{sig_name} =~ m/\bVTALRM\b/) {
for (18..19) {
print "# setitimer: ", join(" ", setitimer(ITIMER_VIRTUAL, 0.5, 0.4)), "\n";
- # Assume interval timer granularity of 0.05 seconds. Too bold?
- print "not " unless abs(getitimer(ITIMER_VIRTUAL) / 0.5) - 1 < 0.1;
+ # Assume interval timer granularity of $limit * 0.5 seconds. Too bold?
+ print "not " unless abs(getitimer(ITIMER_VIRTUAL) / 0.5) - 1 < $limit;
print "ok 18\n";
print "# getitimer: ", join(" ", getitimer(ITIMER_VIRTUAL)), "\n";
while (getitimer(ITIMER_VIRTUAL)) {
- my $j; $j++ for 1..1000; # Can't be unbreakable, must test getitimer().
+ my $j;
+ for (1..1000) { $j++ } # Can't be unbreakable, must test getitimer().
}
print "# getitimer: ", join(" ", getitimer(ITIMER_VIRTUAL)), "\n";
$SIG{VTALRM} = 'DEFAULT';
}
-$a = abs(sleep(1.5) / 1.5 - 1.0);
-print $a < 0.1 ? "ok 20 # $a\n" : "not ok 20 # $a\n";
+if ($have_gettimeofday) {
+ my ($t0, $td);
+
+ my $sleep = 1.5; # seconds
+ my $msg;
-$a = abs(usleep(1_500_000) / 1_500_000 - 1.0);
-print $a < 0.1 ? "ok 21 # $a\n" : "not ok 21 # $a\n";
+ $t0 = gettimeofday();
+ $a = abs(sleep($sleep) / $sleep - 1.0);
+ $td = gettimeofday() - $t0;
+ my $ratio = 1.0 + $a;
+
+ $msg = "$td went by while sleeping $sleep, ratio $ratio.\n";
+
+ if ($td < $sleep * (1 + $limit)) {
+ print $a < $limit ? "ok 20 # $msg" : "not ok 20 # $msg";
+ } else {
+ print "ok 20 # Skip: $msg";
+ }
+
+ $t0 = gettimeofday();
+ $a = abs(usleep($sleep * 1E6) / ($sleep * 1E6) - 1.0);
+ $td = gettimeofday() - $t0;
+ $ratio = 1.0 + $a;
+
+ $msg = "$td went by while sleeping $sleep, ratio $ratio.\n";
+
+ if ($td < $sleep * (1 + $limit)) {
+ print $a < $limit ? "ok 21 # $msg" : "not ok 21 # $msg";
+ } else {
+ print "ok 21 # Skip: $msg";
+ }
+
+} else {
+ for (20..21) {
+ print "ok $_ # Skip: no gettimeofday\n";
+ }
+}
eval { sleep(-1) };
print $@ =~ /::sleep\(-1\): negative time not invented yet/ ?
projects / p5sagit/p5-mst-13.2.git / blobdiff