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|
use strict;
use warnings;
BEGIN {
use Config;
if (! $Config{'useithreads'}) {
print("1..0 # SKIP Perl not compiled with 'useithreads'\n");
exit(0);
}
if ($^O eq 'hpux' && $Config{osvers} <= 10.20) {
print("1..0 # SKIP Broken under HP-UX 10.20\n");
exit(0);
}
}
use ExtUtils::testlib;
BEGIN {
$| = 1;
print("1..1\n"); ### Number of tests that will be run ###
};
use threads;
use threads::shared;
### Start of Testing ###
#####
#
# Launches a bunch of threads which are then
# restricted to finishing in numerical order
#
#####
{
my $cnt = 50;
my $TIMEOUT = 60;
my $mutex = 1;
share($mutex);
my $warning;
$SIG{__WARN__} = sub { $warning = shift; };
my @threads;
for (reverse(1..$cnt)) {
$threads[$_] = threads->create(sub {
my $tnum = shift;
my $timeout = time() + $TIMEOUT;
threads->yield();
# Randomize the amount of work the thread does
my $sum;
for (0..(500000+int(rand(500000)))) {
$sum++
}
# Lock the mutex
lock($mutex);
# Wait for my turn to finish
while ($mutex != $tnum) {
if (! cond_timedwait($mutex, $timeout)) {
if ($mutex == $tnum) {
return ('timed out - cond_broadcast not received');
} else {
return ('timed out');
}
}
}
# Finish up
$mutex++;
cond_broadcast($mutex);
return ('okay');
}, $_);
# Handle thread creation failures
if ($warning) {
my $printit = 1;
if ($warning =~ /returned 11/) {
$warning = "Thread creation failed due to 'No more processes'\n";
$printit = (! $ENV{'PERL_CORE'});
} elsif ($warning =~ /returned 12/) {
$warning = "Thread creation failed due to 'No more memory'\n";
$printit = (! $ENV{'PERL_CORE'});
}
print(STDERR "# Warning: $warning") if ($printit);
lock($mutex);
$mutex = $_ + 1;
last;
}
}
# Gather thread results
my ($okay, $failures, $timeouts, $unknown) = (0, 0, 0, 0, 0);
for (1..$cnt) {
if (! $threads[$_]) {
$failures++;
} else {
my $rc = $threads[$_]->join();
if (! $rc) {
$failures++;
} elsif ($rc =~ /^timed out/) {
$timeouts++;
} elsif ($rc eq 'okay') {
$okay++;
} else {
$unknown++;
print(STDERR "# Unknown error: $rc\n");
}
}
}
if ($failures) {
my $only = $cnt - $failures;
print(STDERR "# Warning: Intended to use $cnt threads, but could only muster $only\n");
$cnt -= $failures;
}
if ($unknown || (($okay + $timeouts) != $cnt)) {
print("not ok 1\n");
my $too_few = $cnt - ($okay + $timeouts + $unknown);
print(STDERR "# Test failed:\n");
print(STDERR "#\t$too_few too few threads reported\n") if $too_few;
print(STDERR "#\t$unknown unknown errors\n") if $unknown;
print(STDERR "#\t$timeouts threads timed out\n") if $timeouts;
} elsif ($timeouts) {
# Frequently fails under MSWin32 due to deadlocking bug in Windows
# hence test is TODO under MSWin32
# http://rt.perl.org/rt3/Public/Bug/Display.html?id=41574
# http://support.microsoft.com/kb/175332
if ($^O eq 'MSWin32') {
print("not ok 1 # TODO - not reliable under MSWin32\n")
} else {
print("not ok 1\n");
print(STDERR "# Test failed: $timeouts threads timed out\n");
}
} else {
print("ok 1\n");
}
}
exit(0);
# EOF
|
