c++ 事件回调 java

#pragma once

#ifdef __cplusplus
extern "C" {
#endif

    typedef void(*sig_t)(int);
    int FirstEliteValidateTest();
    int FirstEliteValidateTest2(sig_t proc);

#ifdef __cplusplus
}
#endif

package com.bg.security;

import com.sun.jna.Callback;
import com.sun.jna.Library;
import com.sun.jna.Native;

import java.io.File;
import java.io.IOException;
import java.util.Properties;

public class Program4Linux {
    public interface CLibrary extends Library {
        interface sig_t extends Callback {
            void invoke(int signal);
        }
        int FirstEliteValidateTest();
        int FirstEliteValidateTest2(sig_t proc);
    }

    public static void main(String[] args) throws InterruptedException, IOException {
        CLibrary lib = (CLibrary) Native.load("FirstEliteValidate", CLibrary.class);
        int a = lib.FirstEliteValidateTest();
        System.out.println("a=" + a);

        CLibrary.sig_t fn = new CLibrary.sig_t() {
            public void invoke(int sig) {
                System.out.println("signal " + sig + " was raised");
            }
        };

        int b = lib.FirstEliteValidateTest2(fn);
        System.out.println("b=" + b);

        Properties props = System.getProperties();
        System.out.println("Operating System:" + props.getProperty("os.name"));
        System.out.println("System Version:" + props.getProperty("os.version"));
        System.out.println("end");
    }
}