有没有单个 Java 进程加载多份 jni 的方式 - V2EX
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fanxasy
V2EX    Java

有没有单个 Java 进程加载多份 jni 的方式

  •  
  •   fanxasy Sep 24, 2022 2629 views
    This topic created in 1313 days ago, the information mentioned may be changed or developed.
    项目中需要通过 jni 调用动态库,有单个 java 进程并行调用 jni 逻辑的需求,而动态库内是线程不安全的单线程逻辑且动态库没法改,请问各位有没有解决办法
    7 replies    2022-09-24 22:57:57 +08:00
    v2eb
        1
    v2eb  
       Sep 24, 2022 via Android
    串行
    darkengine
        2
    darkengine  
       Sep 24, 2022
    试下从 classloader 入手?

    自定义 ClassLoader 实现隔离运行多版本 jar 包的方式:

    http://kentt.top/2017/06/14/classLoader-jar/
    keifafa
        3
    keifafa  
       Sep 24, 2022 via Android
    多进程?
    fanxasy
        4
    fanxasy  
    OP
       Sep 24, 2022
    @darkengine 结合源码看了下,感觉有机会成,我试试
    fanxasy
        5
    fanxasy  
    OP
       Sep 24, 2022
    @darkengine 有一个 static Vector<String> loadedLibraryNames 存放已加载的库名,不允许在不同的 classloader 实例去加载相同的库
    pursuer
        6
    pursuer  
       Sep 24, 2022
    通常操作系统不支持同名动态库重名加载,可以看下动态库改名是否行得通,不过也可能还会有符号冲突,还有一种方案是网上找定制开发的动态库加载器
    darkengine
        7
    darkengine  
       Sep 24, 2022
    @fanxasy 我也没实践过呢,按照这个 https://stackoverflow.com/questions/16189217/same-native-library-loaded-by-different-class-loader 说的,看来是不能实现的了。
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