Question

我无法找到如何使用POE Wheel或任何异步进程创建和写入文件的示例。我希望能够以非阻塞方式编写大文件。我正在寻找例子，但不知道从哪里开始。

Answer 1

所以，我并没有真正找到文件io的直接示例。但是，我设法从我找到的例子中找出这个工作代码。我想这就是我想要的。我在这里添加它，所以如果有人有任何意见，它可能会帮助我或其他改进它。或者，如果其他人正在寻找一个例子，他们可以看到这个。

                $self->{FILEIO_SESSION} = POE::Session->create(
                inline_states => {
                    _start => sub {
                        my ( $kernel, $heap ) = @_[ KERNEL, HEAP ];
                        $kernel->alias_set($fileio_uuid);

                        $heap->{wheels}->{$fileio_uuid} = POE::Wheel::ReadWrite->new(
                            InputHandle => $infile_fh ,
                            OutputHandle => $outfile_fh,
                            Driver => POE::Driver::SysRW->new(),
                            Filter => POE::Filter::Line->new(),
                            InputEvent => 'readLineEvent',
                            ErrorEvent => 'errorEvent'
                        );
                    },
                    _stop => sub {
                        my ( $kernel, $heap ) = @_[ KERNEL, HEAP ];
                        print "Removing fileio session\n";
                        $kernel->alias_remove($fileio_uuid);
                    },
                    readLineEvent => sub {
                        my ( $kernel, $heap, $input ) = @_[ KERNEL, HEAP, ARG0 ];
                        print "read a line...writing to file...\n";
                        $heap->{wheels}->{$fileio_uuid}->put($input);
                    },
                    errorEvent => sub {
                        my ( $kernel, $heap ) = @_[ KERNEL, HEAP ];
                        print "Everything either went to hell or we got to the end.  Shutting down...\n";
                        delete $heap->{wheels}->{$fileio_uuid};
                        $kernel->yield("_stop");
                    }
                }
            );

PERL POE ReadWrite Wheel File IO示例？

1 个答案: