+#!perl
+
+use strict;
+use warnings;
+
+my ($module, $thread_safe_var);
+BEGIN {
+ $module = 'autovivification';
+ $thread_safe_var = 'autovivification::A_THREADSAFE()';
+}
+
+sub load_test {
+ my $x;
+ if (defined &autovivification::unimport) {
+ local $@;
+ eval 'BEGIN { autovivification->unimport } my $y = $x->[0]';
+ $x = $@ if $@;
+ } else {
+ $x = '';
+ }
+ if (not defined $x) {
+ return 1;
+ } elsif ( (not ref $x and not length $x)
+ or (ref $x eq 'ARRAY' and not @$x )) {
+ return 0;
+ } else {
+ return "$x";
+ }
+}
+
+# Keep the rest of the file untouched
+
+use lib 't/lib';
+use VPIT::TestHelpers threads => [ $module, $thread_safe_var ];
+
+my $could_not_create_thread = 'Could not create thread';
+
+use Test::Leaner (
+ tests => 1 + (2 + 2 * 2) + 6 + (2 * 4 + 1) * 2 + (4 + 1) + (6 + 1) + 1
+);
+
+sub is_loaded {
+ my ($affirmative, $desc) = @_;
+
+ my $res = load_test();
+
+ my $expected;
+ if ($affirmative) {
+ $expected = 1;
+ $desc = "$desc: module loaded";
+ } else {
+ $expected = 0;
+ $desc = "$desc: module not loaded";
+ }
+
+ unless (is $res, $expected, $desc) {
+ $res = defined $res ? "'$res'" : 'undef';
+ $expected = "'$expected'";
+ diag("Test '$desc' failed: got $res, expected $expected");
+ }
+
+ return;
+}
+
+BEGIN {
+ local $@;
+ my $code = eval "sub { require $module }";
+ die $@ if $@;
+ *do_load = $code;
+}
+
+is_loaded 0, 'main body, beginning';
+
+# Test serial loadings
+
+SKIP: {
+ my $thr = spawn(sub {
+ my $here = "first serial thread";
+ is_loaded 0, "$here, beginning";
+
+ do_load;
+ is_loaded 1, "$here, after loading";
+
+ return;
+ });
+
+ skip "$could_not_create_thread (serial 1)" => 2 unless defined $thr;
+
+ $thr->join;
+ if (my $err = $thr->error) {
+ die $err;
+ }
+}
+
+is_loaded 0, 'main body, in between serial loadings';
+
+SKIP: {
+ my $thr = spawn(sub {
+ my $here = "second serial thread";
+ is_loaded 0, "$here, beginning";
+
+ do_load;
+ is_loaded 1, "$here, after loading";
+
+ return;
+ });
+
+ skip "$could_not_create_thread (serial 2)" => 2 unless defined $thr;
+
+ $thr->join;
+ if (my $err = $thr->error) {
+ die $err;
+ }
+}
+
+is_loaded 0, 'main body, after serial loadings';
+
+# Test nested loadings
+
+SKIP: {
+ my $parent = spawn(sub {
+ my $here = 'parent thread';
+ is_loaded 0, "$here, beginning";
+
+ SKIP: {
+ my $kid = spawn(sub {
+ my $here = 'child thread';
+ is_loaded 0, "$here, beginning";
+
+ do_load;
+ is_loaded 1, "$here, after loading";
+
+ return;
+ });
+
+ skip "$could_not_create_thread (nested child)" => 2 unless defined $kid;
+
+ $kid->join;
+ if (my $err = $kid->error) {
+ die "in child thread: $err\n";
+ }
+ }
+
+ is_loaded 0, "$here, after child terminated";
+
+ do_load;
+ is_loaded 1, "$here, after loading";
+
+ return;
+ });
+
+ skip "$could_not_create_thread (nested parent)" => (3 + 2)
+ unless defined $parent;
+
+ $parent->join;
+ if (my $err = $parent->error) {
+ die $err;
+ }
+}
+
+is_loaded 0, 'main body, after nested loadings';
+
+# Test parallel loadings
+
+use threads;
+use threads::shared;
+
+my $sync_points = 7;
+
+my @locks_down = (1) x $sync_points;
+my @locks_up = (0) x $sync_points;
+share($_) for @locks_down, @locks_up;
+
+my $default_peers = 2;
+
+sub sync_master {
+ my ($id, $peers) = @_;
+
+ $peers = $default_peers unless defined $peers;
+
+ {
+ lock $locks_down[$id];
+ $locks_down[$id] = 0;
+ cond_broadcast $locks_down[$id];
+ }
+
+ {
+ lock $locks_up[$id];
+ cond_wait $locks_up[$id] until $locks_up[$id] == $peers;
+ }
+}
+
+sub sync_slave {
+ my ($id) = @_;
+
+ {
+ lock $locks_down[$id];
+ cond_wait $locks_down[$id] until $locks_down[$id] == 0;
+ }
+
+ {
+ lock $locks_up[$id];
+ $locks_up[$id]++;
+ cond_signal $locks_up[$id];
+ }
+}
+
+for my $first_thread_ends_first (0, 1) {
+ for my $id (0 .. $sync_points - 1) {
+ {
+ lock $locks_down[$id];
+ $locks_down[$id] = 1;
+ }
+ {
+ lock $locks_up[$id];
+ $locks_up[$id] = 0;
+ }
+ }
+
+ my $thr1_end = 'finishes first';
+ my $thr2_end = 'finishes last';
+
+ ($thr1_end, $thr2_end) = ($thr2_end, $thr1_end)
+ unless $first_thread_ends_first;
+
+ SKIP: {
+ my $thr1 = spawn(sub {
+ my $here = "first simultaneous thread ($thr1_end)";
+ sync_slave 0;
+
+ is_loaded 0, "$here, beginning";
+ sync_slave 1;
+
+ do_load;
+ is_loaded 1, "$here, after loading";
+ sync_slave 2;
+ sync_slave 3;
+
+ sync_slave 4;
+ is_loaded 1, "$here, still loaded while also loaded in the other thread";
+ sync_slave 5;
+
+ sync_slave 6 unless $first_thread_ends_first;
+
+ is_loaded 1, "$here, end";
+
+ return;
+ });
+
+ skip "$could_not_create_thread (parallel 1)" => (4 * 2) unless defined $thr1;
+
+ my $thr2 = spawn(sub {
+ my $here = "second simultaneous thread ($thr2_end)";
+ sync_slave 0;
+
+ is_loaded 0, "$here, beginning";
+ sync_slave 1;
+
+ sync_slave 2;
+ sync_slave 3;
+ is_loaded 0, "$here, loaded in other thread but not here";
+
+ do_load;
+ is_loaded 1, "$here, after loading";
+ sync_slave 4;
+ sync_slave 5;
+
+ sync_slave 6 if $first_thread_ends_first;
+
+ is_loaded 1, "$here, end";
+
+ return;
+ });
+
+ sync_master($_) for 0 .. 5;
+
+ if (defined $thr2) {
+ ($thr2, $thr1) = ($thr1, $thr2) unless $first_thread_ends_first;
+
+ $thr1->join;
+ if (my $err = $thr1->error) {
+ die $err;
+ }
+
+ sync_master(6, 1);
+
+ $thr2->join;
+ if (my $err = $thr1->error) {
+ die $err;
+ }
+ } else {
+ sync_master(6, 1) unless $first_thread_ends_first;
+
+ $thr1->join;
+ if (my $err = $thr1->error) {
+ die $err;
+ }
+
+ skip "$could_not_create_thread (parallel 2)" => (4 * 1);
+ }
+ }
+
+ is_loaded 0, 'main body, after simultaneous threads';
+}
+
+# Test simple clone
+
+SKIP: {
+ my $parent = spawn(sub {
+ my $here = 'simple clone, parent thread';
+ is_loaded 0, "$here, beginning";
+
+ do_load;
+ is_loaded 1, "$here, after loading";
+
+ SKIP: {
+ my $kid = spawn(sub {
+ my $here = 'simple clone, child thread';
+
+ is_loaded 1, "$here, beginning";
+
+ return;
+ });
+
+ skip "$could_not_create_thread (simple clone child)" => 1
+ unless defined $kid;
+
+ $kid->join;
+ if (my $err = $kid->error) {
+ die "in child thread: $err\n";
+ }
+ }
+
+ is_loaded 1, "$here, after child terminated";
+
+ return;
+ });
+
+ skip "$could_not_create_thread (simple clone parent)" => (3 + 1)
+ unless defined $parent;
+
+ $parent->join;
+ if (my $err = $parent->error) {
+ die $err;
+ }
+}
+
+is_loaded 0, 'main body, after simple clone';
+
+# Test clone outliving its parent
+
+SKIP: {
+ my $kid_tid;
+ share($kid_tid);
+
+ my $kid_done;
+ share($kid_done);
+
+ my $parent = spawn(sub {
+ my $here = 'outliving clone, parent thread';
+ is_loaded 0, "$here, beginning";
+
+ my $no_kid;
+
+ do_load;
+ is_loaded 1, "$here, after loading";
+
+ SKIP: {
+ my $kid = spawn(sub {
+ my $here = 'outliving clone, child thread';
+
+ is_loaded 1, "$here, beginning";
+
+ {
+ lock $kid_tid;
+ $kid_tid = threads->tid();
+ cond_signal $kid_tid;
+ }
+
+ is_loaded 1, "$here, kid tid was communicated";
+
+ {
+ lock $kid_done;
+ cond_wait $kid_done until $kid_done;
+ }
+
+ is_loaded 1, "$here, end";
+
+ return;
+ });
+
+ unless (defined $kid) {
+ $no_kid = 1;
+ skip "$could_not_create_thread (outliving clone child)" => 3;
+ }
+ }
+
+ is_loaded 1, "$here, end";
+
+ return $no_kid;
+ });
+
+ skip "$could_not_create_thread (outliving clone parent)" => (3 + 3)
+ unless defined $parent;
+
+ my $no_kid = $parent->join;
+ if (my $err = $parent->error) {
+ die $err;
+ }
+
+ unless ($no_kid) {
+ my $tid = do {
+ lock $kid_tid;
+ cond_wait $kid_tid until defined $kid_tid;
+ $kid_tid;
+ };
+
+ my $kid = threads->object($tid);
+ if (defined $kid) {
+ {
+ lock $kid_done;
+ $kid_done = 1;
+ cond_signal $kid_done;
+ }
+
+ $kid->join;
+ }
+ }
+}
+
+is_loaded 0, 'main body, after outliving clone';
+
+do_load;
+is_loaded 1, 'main body, loaded at end';
projects / perl / modules / autovivification.git / commitdiff