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    Java 版的 Ruby 解释器 JRuby 1.7.14 发布

    作者:admin 时间:2021-02-11 12:28

    JRuby 1.7.14 发布 ,此版本现已提供下载:

    http://www.jruby.org/download

    JRuby 1.7 主要是为了兼容 Ruby 1.9.3 版本,改进记录如下:

    解决了 30 个 issues

    修复了 Jar 文件源潜在的内存泄漏问题

    因为在 Rails 应用启动比较慢,所以默认禁用 invokedynamic

    load/require 内部重构和简化

    解决了一些兼容性问题

    1.7.14 修复的 bug:

    #1923 - String#start_with? returns false when using an empty string
    #1905 - Tempfile and deleteOnExit
    #1899 - Can't call static method on Java 8 interface
    #1898 - Fix the memory leak and actually close the resources.
    #1889 - NPE from org.jruby.java.proxies.ArrayJavaProxy.to_a
    #1888 - native memory leak when reading files from inside a .jar
    #1859 - JMX tries to double-bind a port when using bundle exec
    #1858 - JRuby with Java 8 4 to 10 times slower than Java 7
    #1852 - JRubyClassloader seems to have a problem with file urls pointing to jar ...
    #1850 - embedded jars do not get loaded
    #1846 - Fix $LOAD_FEATURES paths for 1.8
    #1818 - fix ArrayJavaProxy#to_a failure on arrays containing null
    #1813 - can not load resources from jar anymore with jar uri
    #1809 - apply minor enebo's comments
    #1808 - Fix BigDecimal#round behavior with NAN and INFINITY
    #1805 - Zlib crc improvements
    #1803 - Fix minor bug in `setNativeEnabled`, and expose it in ScriptingContainer
    #1802 - Fix Encoding::Converter#inspect output
    #1799 - mvn -Pall fails at the documentation step
    #1790 - Make Time#to_r consistent with MRI
    #1777 - ServerSocket#accept_nonblock returns the server's port, not the client's
    #1772 - avoid sub-classing ThreadLocal since it will leak in envs such as .wars
    #1765 - added a java_field method for use in the jrubyc command.
    #1762 - enhanced the java_class compiler so it can handle multiple constructors
    #1750 - Refactor LoadService to make use of resources
    #1729 - no valid struct layout for Ethon::Curl::Slist
    #1676 - Empty hash optimization
    #1580 - IO.select raises CancelledKeyException on shutdown
    #1520 - Date comparison as java objects
    #1435 - bouncy-castle-java JARs missing when warbling with JRuby 1.7.10
    
    

    JRuby是面向Ruby、基于Java虚拟机(JVM)的一种解释程序,它结合了Ruby语言的简易性和功能强大的JVM的执行机制,包括与 Java库 全面集成。Rails彻底加快及简化了Web应用的开发,不过它让人觉得不够成熟,特别是在高端企业级功能方面。另一方面,Java平台及其虚拟机、库和 应用服务器的速度、稳定性和功能方面却一直在提升,现在已被公认为是开发高端服务器应用的领先平台。不过如果Java平台不与Ruby等新兴语言联系在一 起,就有可能落后于流行趋势。

    示例代码:

    require "java"
    include_class "java.util.TreeSet"
    include_class "com.example.CallMe"
    include_class "com.example.ISpeaker"
    puts "Hello from ruby"
    set = TreeSet.new
    set.add "foo"
    set.add "Bar"
    set.add "baz"
    set.each { |v| puts "value: #{v}" }
    cm = CallMe.new
    cm.hello
    $globalCM.hello
    class CallJava
    include ISpeaker
    def initialize
     super
     @count = 0
    end
    def say(msg)
     puts "Ruby saying #{msg}"
    end
    def addOne(from)
    #  m.synchronize {
      @count += 1
      puts "Now got #@count from #{from}"
    #  }
    end
    end
    

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