1

zhanghua

2024-09-26 c775c6953d9759e70f08acbfa8f6d7490aaae3d1

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package com.netsdk.demo.customize;
 
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadPoolExecutor;
 
import com.netsdk.lib.NetSDKLib.SdkStructure;
 
 
public class CheckSize {
    
    private static Class[] SdkClasses = null;
    private static long startTime = 0;
 
    /**
     * 打印Struct大小
     **/
    private static void printSturctSize(Class cls) {        
        Class superClass = cls.getSuperclass();
        if (superClass == null 
                || !superClass.getSimpleName().equals("SdkStructure")) { // 是否继承自Structure
            return;
        }
        
        for (Field field : cls.getDeclaredFields()) { // 是否为枚举类型
            int mod = field.getModifiers();
            if (Modifier.isFinal(mod) && Modifier.isStatic(mod)) { 
                return;
            }
            
//            if (field.getName().equals("dwSize"))
        }
        
        try {
            SdkStructure stu = (SdkStructure) cls.newInstance();
            System.out.printf("sizeof(%s) = %d\n", cls.getSimpleName(), stu.size());
        } catch (Exception e) {
            System.err.println(cls.getSimpleName());
        }
    }
    
    private static class CalculateSizeTask implements Runnable {
 
        private int no;
        private int start;
        private int end;
        
        public CalculateSizeTask(int no, int start, int end) {
            this.no = no;
            this.start = start;
            this.end = end;
        }
        
        @Override
        public void run() {
            for (int i = start; i < end; ++i) {
                printSturctSize(SdkClasses[i]);
            }
//            System.out.println("no[" + no + "] Time:" + (System.currentTimeMillis() - startTime));
        }
        
    }
    
    public static void main (String[] args) throws ClassNotFoundException {
        Class netsdk = Class.forName("com.netsdk.lib.NetSDKLib");
        SdkClasses = netsdk.getDeclaredClasses();
 
        
//        startTime = System.currentTimeMillis();
//        for (Class cls : SdkClasses) {
//            printSturctSize(cls);
//        }
        
        int processorNum = Runtime.getRuntime().availableProcessors();
        int threadDealNum = SdkClasses.length/processorNum;
        ThreadPoolExecutor pool = (ThreadPoolExecutor)Executors.newFixedThreadPool(processorNum);
        int start = 0;
        int end = threadDealNum;
        for (int i = 0; i < processorNum-1; ++i) {
            pool.execute(new CalculateSizeTask(i+1, start, end));
            start += threadDealNum;
            end += threadDealNum;
        }
        
        pool.execute(new CalculateSizeTask(processorNum, start, SdkClasses.length));
 
        pool.shutdown();
 
//        System.out.println("Time:" + (System.currentTimeMillis() - startTime));
    }
}