java获得PID详解编程语言

Java

class JavaHowTo { 
  public native long getCurrentProcessId(); 
  static { 
    System.loadLibrary("jni2"); 
  } 
}

“`{.java} public class JNIJavaHowTo { public static void main(String[] args) { JavaHowTo jht = new JavaHowTo(); System.out.println(“Press Any key…”); java.io.BufferedReader input = new java.io.BufferedReader(new java.io.InputStreamReader(System.in)); try { input.readLine();} catch (Exception e) { e.printStackTrace();} System.out.println(jht.getCurrentProcessId()); } }

```{cpp} 
// jni2.cpp : Defines the entry point for the DLL application. 
// 
 
#include "stdafx.h" 
#include <process.h> 
#include "JavaHowTo.h"  
 
BOOL APIENTRY DllMain( HANDLE hModule,  
                       DWORD  ul_reason_for_call,  
                       LPVOID lpReserved 
                     ) 
{ 
    return TRUE; 
} 
 
JNIEXPORT jlong JNICALL Java_JavaHowTo_getCurrentProcessId 
  (JNIEnv *, jobject) { 
 
     // return GetCurrentProcessId(); 
    return getpid(); 
}