| line | true | false | branch | 
 
| 87 | 0 | 22 | if $constname eq 'constant' | 
 
| 89 | 0 | 22 | if ($error) | 
 
| 122 | 0 | 2 | if ($$self[3] < 0) | 
 
| 123 | 0 | 0 | if ($! =~ /not implemented/) { } | 
 
| 139 | 6 | 3 | if (@_) | 
 
| 142 | 3 | 3 | if ($mask) { } | 
 
| 145 | 1 | 2 | if (exists $$self[0]{$fd}) | 
 
| 149 | 1 | 2 | if epoll_ctl($$self[3], $op, $fd, $combined_mask) < 0 | 
 
| 159 | 1 | 2 | if (%{$$self[0]{$fd};}) { } | 
 
| 167 | 1 | 2 | if epoll_ctl($$self[3], $op, $fd, $combined_mask) < 0 | 
 
| 171 | 3 | 4 | unless exists $$self[0]{$fd} and exists $$self[0]{$fd}{$io} | 
 
| 183 | 6 | 0 | if $maxevents < 10 | 
 
| 185 | 6 | 0 | defined $timeout ? : | 
 
| 188 | 1 | 5 | unless defined $ret | 
 
| 202 | 2 | 1 | if (exists $$self[1]{$fd} and exists $$self[0]{$fd}{$io}) { } | 
 
| 220 | 3 | 0 | unless @_ | 
 
| 229 | 0 | 0 | if $ev & $mask & $events | 
 
| 249 | 0 | 6 | if (my($newmask) = @_) { } |