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|
use strict;
use warnings;
use Config;
BEGIN {
if (! $Config{'useithreads'}) {
print("1..0 # SKIP Perl not compiled with 'useithreads'\n");
exit(0);
}
if (! $Config{'d_select'}) {
print("1..0 # SKIP 'select()' not available for testing\n");
exit(0);
}
}
use threads;
use Thread::Queue;
use Test::More;
my $num_threads = 3;
my $cycles = 2;
my $count = 2;
plan tests => 3*$num_threads*$cycles*$count + 6*$num_threads + 6;
# Test for end() while threads are blocked and no more items in queue
{
my @items = 1..($num_threads*$cycles*$count);
my $q = Thread::Queue->new(@items);
my $r = Thread::Queue->new();
my @threads;
for my $ii (1..$num_threads) {
push @threads, threads->create( sub {
# Thread will loop until no more work is coming
LOOP:
while (my @set = $q->dequeue($count)) {
foreach my $item (@set) {
last LOOP if (! defined($item));
pass("'$item' read from queue in thread $ii");
}
select(undef, undef, undef, rand(1));
$r->enqueue($ii);
}
pass("Thread $ii exiting");
});
}
# Make sure there's nothing in the queue and threads are blocking
for my $ii (1..($num_threads*$cycles)) {
$r->dequeue();
}
sleep(1);
threads->yield();
is($q->pending(), 0, 'Queue is empty');
# Signal no more work is coming
$q->end();
is($q->pending(), undef, 'Queue is ended');
for my $thread (@threads) {
$thread->join;
pass($thread->tid." joined");
}
}
# Test for end() while threads are blocked and items still remain in queue
{
my @items = 1..($num_threads*$cycles*$count + 1);
my $q = Thread::Queue->new(@items);
my $r = Thread::Queue->new();
my @threads;
for my $ii (1..$num_threads) {
push @threads, threads->create( sub {
# Thread will loop until no more work is coming
LOOP:
while (my @set = $q->dequeue($count)) {
foreach my $item (@set) {
last LOOP if (! defined($item));
pass("'$item' read from queue in thread $ii");
}
select(undef, undef, undef, rand(1));
$r->enqueue($ii);
}
pass("Thread $ii exiting");
});
}
# Make sure there's nothing in the queue and threads are blocking
for my $ii (1..($num_threads*$cycles)) {
$r->dequeue();
}
sleep(1);
threads->yield();
is($q->pending(), 1, 'Queue has one left');
# Signal no more work is coming
$q->end();
for my $thread (@threads) {
$thread->join;
pass($thread->tid." joined");
}
is($q->pending(), undef, 'Queue is ended');
}
# Test of end() send while items in queue
{
my @items = 1..($num_threads*$cycles*$count + 1);
my $q = Thread::Queue->new(@items);
my @threads;
for my $ii (1..$num_threads) {
push @threads, threads->create( sub {
# Thread will loop until no more work is coming
LOOP:
while (my @set = $q->dequeue($count)) {
foreach my $item (@set) {
last LOOP if (! defined($item));
pass("'$item' read from queue in thread $ii");
}
select(undef, undef, undef, rand(1));
}
pass("Thread $ii exiting");
});
}
# Signal no more work is coming to the blocked threads, they
# should unblock.
$q->end();
for my $thread (@threads) {
$thread->join;
pass($thread->tid." joined");
}
}
exit(0);
# EOF
|
