X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=t%2F51threads.t;h=d5cd0d5bc9c063ba8e7e6bf7b703ba3e364be51c;hb=63ee8b7896e02ee888eb26251fc28311721832c5;hp=a7a3a78053a7db33a878d12101685e0eaf980fec;hpb=a1cb5921a914f087163914b010ca0c4e72a57dcc;p=dbsrgits%2FDBIx-Class.git

diff --git a/t/51threads.t b/t/51threads.t
index a7a3a78..d5cd0d5 100644
--- a/t/51threads.t
+++ b/t/51threads.t
@@ -1,44 +1,49 @@
-use strict;
-use warnings;
-use Test::More;
-use Config;
-
-# README: If you set the env var to a number greater than 10,
-#   we will use that many children
+BEGIN { do "./t/lib/ANFANG.pm" or die ( $@ || $! ) }
 
+use Config;
 BEGIN {
-    plan skip_all => 'Your perl does not support ithreads'
-        if !$Config{useithreads} || $] < 5.008;
+  unless ($Config{useithreads}) {
+    print "1..0 # SKIP your perl does not support ithreads\n";
+    exit 0;
+  }
+
+  if ($INC{'Devel/Cover.pm'}) {
+    print "1..0 # SKIP Devel::Cover does not work with threads yet\n";
+    exit 0;
+  }
 }
-
 use threads;
 
-my ($dsn, $user, $pass) = @ENV{map { "DBICTEST_PG_${_}" } qw/DSN USER PASS/};
-my $num_children = $ENV{DBICTEST_THREAD_STRESS};
+use DBIx::Class::Optional::Dependencies -skip_all_without => 'test_rdbms_pg';
 
-plan skip_all => 'Set $ENV{DBICTEST_THREAD_STRESS} to run this test'
-    unless $num_children;
+use strict;
+use warnings;
 
-plan skip_all => 'Set $ENV{DBICTEST_PG_DSN}, _USER and _PASS to run this test'
-      . ' (note: creates and drops a table named artist!)' unless ($dsn && $user);
+use Test::More;
+use Test::Exception;
+use Time::HiRes qw(time sleep);
+use List::Util 'max';
 
-diag 'It is normal to see a series of "Scalars leaked: ..." messages during this test';
+plan skip_all => 'DBIC does not actively support threads before perl 5.8.5'
+  if "$]" < 5.008005;
 
-if($num_children !~ /^[0-9]+$/ || $num_children < 10) {
-   $num_children = 10;
-}
 
-plan tests => $num_children + 5;
+use DBICTest;
 
-use lib qw(t/lib);
+# README: If you set the env var to a number greater than 5,
+#   we will use that many children
+my $num_children = $ENV{DBICTEST_THREAD_STRESS} || 1;
+if($num_children !~ /^[0-9]+$/ || $num_children < 5) {
+   $num_children = 5;
+}
 
-use_ok('DBICTest::Schema');
+my ($dsn, $user, $pass) = @ENV{map { "DBICTEST_PG_${_}" } qw/DSN USER PASS/};
 
-my $schema = DBICTest::Schema->connection($dsn, $user, $pass, { AutoCommit => 1, RaiseError => 1, PrintError => 0 });
+my $schema = DBICTest::Schema->connect($dsn, $user, $pass, { AutoCommit => 1, RaiseError => 1, PrintError => 0 });
 
 my $parent_rs;
 
-eval {
+lives_ok (sub {
     my $dbh = $schema->storage->dbh;
 
     {
@@ -51,9 +56,59 @@ eval {
     $schema->resultset('CD')->create({ title => 'vacation in antarctica part 2', artist => 456, year => 1901 });
 
     $parent_rs = $schema->resultset('CD')->search({ year => 1901 });
-    $parent_rs->next;
-};
-ok(!$@) or diag "Creation eval failed: $@";
+    is ($parent_rs->count, 2);
+}, 'populate successfull');
+
+# basic tests
+{
+  ok ($schema->storage->connected(), 'Parent is connected');
+  is ($parent_rs->next->id, 1, 'Cursor advanced');
+  my $ct_num = Test::More->builder->current_test;
+
+  my $newthread = async {
+    my $out = '';
+
+    #simulate a  subtest to not confuse the parent TAP emission
+    my $tb = Test::More->builder;
+    $tb->reset;
+    for (qw/output failure_output todo_output/) {
+      close $tb->$_;
+      open ($tb->$_, '>', \$out);
+    }
+
+    ok(!$schema->storage->connected, "storage->connected() false in child");
+    for (1,2) {
+      throws_ok { $parent_rs->next } qr/\QMulti-thread access attempted while cursor in progress (position 1)/;
+    }
+
+    $parent_rs->reset;
+    is($parent_rs->next->id, 1, 'Resetting cursor reprepares it within child environment');
+
+    done_testing;
+
+    close $tb->$_ for (qw/output failure_output todo_output/);
+    sleep (0.2); # tasty crashes without this
+
+    $out;
+  };
+  die "Thread creation failed: $! $@" if !defined $newthread;
+
+  my $out = $newthread->join;
+  $out =~ s/^/   /gm;
+  print $out;
+
+  # workaround for older Test::More confusing the plan under threads
+  Test::More->builder->current_test($ct_num);
+
+  is ($parent_rs->next->id, 2, 'Cursor still intact in parent');
+  is ($parent_rs->next, undef, 'Cursor exhausted');
+}
+
+$parent_rs->reset;
+
+# sleep until this spot so everything starts simultaneously
+# add "until turn of second" for prettier display
+my $t = int( time() ) + 4;
 
 my @children;
 while(@children < $num_children) {
@@ -61,12 +116,20 @@ while(@children < $num_children) {
     my $newthread = async {
         my $tid = threads->tid;
 
+        sleep( max( 0.1, $t - time ) );
+
+        # FIXME if we do not stagger the threads, sparks fly due to CXSA
+        sleep ( $tid / 10 ) if "$]" < 5.012;
+
+        note ("Thread $tid starting work at " . time() );
+
         my $child_rs = $schema->resultset('CD')->search({ year => 1901 });
         my $row = $parent_rs->next;
         if($row && $row->get_column('artist') =~ /^(?:123|456)$/) {
             $schema->resultset('CD')->create({ title => "test success $tid", artist => $tid, year => scalar(@children) });
         }
-        sleep(3);
+
+        sleep (0.2); # without this many tasty crashes even on latest perls
     };
     die "Thread creation failed: $! $@" if !defined $newthread;
     push(@children, $newthread);
@@ -74,19 +137,28 @@ while(@children < $num_children) {
 
 ok(1, "past spawning");
 
-{
-    $_->join for(@children);
+my @tids;
+for (@children) {
+  push @tids, $_->tid;
+  $_->join;
 }
 
 ok(1, "past joining");
 
-while(@children) {
-    my $child = pop(@children);
-    my $tid = $child->tid;
-    my $rs = $schema->resultset('CD')->search({ title => "test success $tid", artist => $tid, year => scalar(@children) });
+while (@tids) {
+    my $tid = pop @tids;
+    my $rs = $schema->resultset('CD')->search({ title => "test success $tid", artist => $tid, year => scalar(@tids) });
     is($rs->next->get_column('artist'), $tid, "Child $tid successful");
 }
 
 ok(1, "Made it to the end");
+undef $parent_rs;
 
 $schema->storage->dbh->do("DROP TABLE cd");
+
+# Too many threading bugs on exit, none of which have anything to do with
+# the actual stuff we test
+$ENV{DBICTEST_DIRTY_EXIT} = 1
+  if "$]" < 5.012;
+
+done_testing;