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![> use JSON::Tiny;
> from-json(‘[1,2,true]').perl
[1, 2, Bool::True]](https://image.slidesharecdn.com/nzzdjbzyrns80z07t2co-signature-b98d0acf6fabca9762561fa9de6483e1dbdad1f26f38f93beb087664fc9127c1-poli-150822005507-lva1-app6891/75/Perl6-meets-JVM-39-2048.jpg)
![to-json(
{“a"=>5.16,"b"=>false,"c"=>[1..5]}
)](https://image.slidesharecdn.com/nzzdjbzyrns80z07t2co-signature-b98d0acf6fabca9762561fa9de6483e1dbdad1f26f38f93beb087664fc9127c1-poli-150822005507-lva1-app6891/75/Perl6-meets-JVM-40-2048.jpg)
![use HTTP::Easy::PSGI;
my $http = HTTP::Easy::PSGI.new(:port(8080));
my $app = sub (%env) {
my $name = %env<QUERY_STRING> || "World";
return [ 200, [ 'Content-Type' => 'text/plain' ], [ "Hello
$name" ] ];
}
$http.handle($app);](https://image.slidesharecdn.com/nzzdjbzyrns80z07t2co-signature-b98d0acf6fabca9762561fa9de6483e1dbdad1f26f38f93beb087664fc9127c1-poli-150822005507-lva1-app6891/75/Perl6-meets-JVM-69-2048.jpg)
![with perl6-m
• ab -n 50 -c 1 http://127.0.0.1:8080/
• Requests per second: 5.95 [#/sec] (mean)](https://image.slidesharecdn.com/nzzdjbzyrns80z07t2co-signature-b98d0acf6fabca9762561fa9de6483e1dbdad1f26f38f93beb087664fc9127c1-poli-150822005507-lva1-app6891/75/Perl6-meets-JVM-70-2048.jpg)
![with perl6-j
• ab -n 50 -c 1 http://127.0.0.1:8080/
• Requests per second: 10.60 [#/sec] (mean)](https://image.slidesharecdn.com/nzzdjbzyrns80z07t2co-signature-b98d0acf6fabca9762561fa9de6483e1dbdad1f26f38f93beb087664fc9127c1-poli-150822005507-lva1-app6891/75/Perl6-meets-JVM-71-2048.jpg)
![10 threads + perl6-j
• ab -c 10 -n 1000 http://127.0.0.1:8080/
• Requests per second: 22.91 [#/sec] (mean)](https://image.slidesharecdn.com/nzzdjbzyrns80z07t2co-signature-b98d0acf6fabca9762561fa9de6483e1dbdad1f26f38f93beb087664fc9127c1-poli-150822005507-lva1-app6891/75/Perl6-meets-JVM-72-2048.jpg)
![Single thread + perl6-j
• single thread
• ab -c 10 -n 1000 http://127.0.0.1:8080/
• Requests per second: 17.84 [#/sec] (mean)](https://image.slidesharecdn.com/nzzdjbzyrns80z07t2co-signature-b98d0acf6fabca9762561fa9de6483e1dbdad1f26f38f93beb087664fc9127c1-poli-150822005507-lva1-app6891/75/Perl6-meets-JVM-73-2048.jpg)
![Time per request:
550.895 [ms] (mean)](https://image.slidesharecdn.com/nzzdjbzyrns80z07t2co-signature-b98d0acf6fabca9762561fa9de6483e1dbdad1f26f38f93beb087664fc9127c1-poli-150822005507-lva1-app6891/75/Perl6-meets-JVM-75-2048.jpg)
Uploaded byTokuhiro Matsuno
Perl6 meets JVM
This document discusses using Perl 6 with the Java Virtual Machine (JVM). It provides instructions for installing Perl 6 with JVM support and demonstrates various features like JSON processing, HTTP client/server, database access using SQLite and MySQL, calling Java methods, and building a basic GUI. Performance tests show startup is slow but HTTP server throughput is faster with JVM backend compared to MoarVM backend. Overall, the author finds Perl 6 on JVM to be practical for Java developers needing to access Java libraries and calls it potentially useful.
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Perl6 meets JVM
- 1.
- 2.
- 3.
- 4.
- 5. This is RakudoStar, a useful, usable Perl 6 distribution for "early adopters". 曰く､
- 6.
- 7.
- 8. Products • nqp: Perl6subset, to write Perl6 interpreter • rakudo: One of Perl6 implementation
- 9. VM Support • Parrot:VM for… • MoarVM: VM for Perl6 • JVM: VM for Java ← Today’s topic
- 10.
- 11. Because, I’m using Javafor $DAYJOB
- 12. You can usejava libraries, instead of poor Perl6 libraries.
- 13. perl6-j is probablyuseful for Java developers
- 14.
- 15. How do Iinstall Perl6?
- 16.
- 17.
- 18.
- 19. • make • makeinstall
- 20.
- 21.
- 22.
- 23. Evaluation point asa Web developer
- 24. • Start-up speed •File access • JSON processing • HTTP client • HTTP Server(Performance) • Access to mysql • use java libraries
- 25.
- 26. time ./install/bin/perl6-j -e'say "Hello, YAPC”’ Hello, YAPC ./install/bin/perl6-j -e 'say "Hello, YAPC”' 17.32s user 0.51s system 254% cpu 6.995 total
- 27.
- 28.
- 29.
- 30. > javac Hello.java >time java Hello Hello java Hello 0.12s user 0.03s system 116% cpu 0.130 total
- 31. time perl -E'say "Hello, YAPC"' Hello, YAPC perl -E 'say "Hello, YAPC"' 0.04s user 0.04s system 83% cpu 0.094 total
- 32.
- 33. time /usr/local/bin/perl6-m -e'say "hello"' hello /usr/local/bin/perl6-m -e 'say "hello"' 0.31s user 0.04s system 97% cpu 0.360 total
- 34.
- 35.
- 36.
- 37.
- 38.
- 39. > use JSON::Tiny; >from-json(‘[1,2,true]').perl [1, 2, Bool::True]
- 40.
- 41.
- 42.
- 43. > use LWP::Simple >LWP::Simple.get("http:// 64p.org") <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.o$ g/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml">
- 44.
- 45. But there’s nolegacy encoding support.
- 46.
- 47.
- 48.
- 49.
- 50. FFI - ForeignFunction Interface
- 51. Call C APIfrom Perl6
- 52.
- 53.
- 54.
- 55.
- 56.
- 57.
- 58.
- 59. my $dbh = DBIish.connect('SQLite',: database<thefile.sqlite3>);
- 60.
- 61.
- 62. use DBIish; my $dbh= DBIish.connect('mysql', :host<127.0.0. 1>, :port(3306), :database<mysql>, :us er<root>, :password('')); my $sth = $dbh.prepare('SHOW TABLES'); $sth.execute(); my $arrayref = $sth.fetchall_arrayref(); $arrayref.perl.say;
- 63. How do Icall JNI methods?
- 64. sub mysql_affected_rows( OpaquePointer $mysql_client) returns int32 is native('libmysqlclient') { ... }
- 65.
- 66. You can callC APIs!
- 67.
- 68.
- 69. use HTTP::Easy::PSGI; my $http= HTTP::Easy::PSGI.new(:port(8080)); my $app = sub (%env) { my $name = %env<QUERY_STRING> || "World"; return [ 200, [ 'Content-Type' => 'text/plain' ], [ "Hello $name" ] ]; } $http.handle($app);
- 70. with perl6-m • ab-n 50 -c 1 http://127.0.0.1:8080/ • Requests per second: 5.95 [#/sec] (mean)
- 71. with perl6-j • ab-n 50 -c 1 http://127.0.0.1:8080/ • Requests per second: 10.60 [#/sec] (mean)
- 72. 10 threads +perl6-j • ab -c 10 -n 1000 http://127.0.0.1:8080/ • Requests per second: 22.91 [#/sec] (mean)
- 73. Single thread +perl6-j • single thread • ab -c 10 -n 1000 http://127.0.0.1:8080/ • Requests per second: 17.84 [#/sec] (mean)
- 74. ab -n 1000-c 10 http://127.0.0.1:8080/
- 75. Time per request: 550.895[ms] (mean)
- 76.
- 77. 7. Call Javamethods
- 78.
- 79. for 'Hello, Java'.encode('utf-8'){ $crc.update($_) }
- 80.
- 81.
- 82.
- 83.
- 84. my $label =JLabel.new("Hello, world"); $frame.getContentPane.add($labe l);
- 85.
- 86.
- 87.
- 88.
- 89. There is someissues. But practical than I thought