জাভা 9 এ প্রসেস এপিআই এর সমস্ত প্রসেস ডেটা কীভাবে পুনরুদ্ধার করবেন?

জাভা 9-এ, প্রসেস API অপারেটিং সিস্টেম প্রক্রিয়া নিয়ন্ত্রণ এবং পরিচালনা করতে ব্যবহৃত হয়েছে। প্রসেসহ্যান্ডেল ক্লাস প্রক্রিয়াটির নেটিভ প্রক্রিয়া প্রদান করে আইডি , শুরু করুন সময় , জমে CPU সময় , যুক্তি , কমান্ড , ব্যবহারকারী , পিতামাতা প্রক্রিয়া , এবং বংশধর . এটি প্রক্রিয়া জীবন্ত পরীক্ষা করার একটি পদ্ধতিও প্রদান করে এবং destroy প্রসেস আমরা সমস্ত প্রসেসহ্যান্ডেল পুনরুদ্ধার করি allProcesses() ব্যবহার করে একটি স্ট্রীম হিসাবে ডেটা পদ্ধতি।

নীচের উদাহরণে, আমরা সমস্ত প্রক্রিয়ার তথ্য পুনরুদ্ধার করি৷

উদাহরণ

import java.util.stream.Stream;
import java.util.Optional;
import java.util.stream.Stream;

public class AllProcessesTest {
   public static void main(String args[]) throws InterruptedException {
      System.out.println("---------------------------");
      System.out.println("All Processes:");
      Stream<ProecessHandle> processStream = ProcessHandle.allProcesses();
      processStream.forEach(process -> printInfo(process));
   }
   private static void printInfo(ProcessHandle processHandle) {
      System.out.println("---------");
      System.out.println("Id: " + processHandle.pid());
      System.out.println("isAlive(): " + processHandle.isAlive());
      System.out.println("number of childrens: " + processHandle.children().count());
      System.out.println("isSupportsNormalTermination(): " + processHandle.supportsNormalTermination());

      ProcessHandle.Info processInfo = processHandle.info();
      System.out.println("Info: " + processInfo.toString());
      System.out.println("Info arguments().isPresent(): " + processInfo.arguments().isPresent());
      System.out.println("Info command().isPresent(): " + processInfo.command().isPresent());
      System.out.println("Info totalCpuDuration().isPresent(): " + processInfo.totalCpuDuration().isPresent());
      System.out.println("Info user().isPresent(): " + processInfo.user().isPresent());
   }
}

আউটপুট

---------------------------
All Processes:

Id: 7056
isAlive(): true
number of childrens: 0
isSupportsNormalTermination(): false
Info: [user: Optional[Tutorialspoint\User], cmd: C:\Program Files (x86)\Google\Chrome\Application\chrome.exe, startTime: Optional[2020-03-09T03:26:00.406Z], totalTime: Optional[PT1M52.15625S]]
Info arguments().isPresent(): false
Info command().isPresent(): true
Info totalCpuDuration().isPresent(): true
Info user().isPresent(): true
---------
Id: 6168
isAlive(): true
number of childrens: 0
isSupportsNormalTermination(): false
Info: [user: Optional[Tutorialspoint\User], cmd: C:\Program Files (x86)\Google\Chrome\Application\chrome.exe, startTime: Optional[2020-03-09T03:26:01.567Z], totalTime: Optional[PT2M24.671875S]]
Info arguments().isPresent(): false
Info command().isPresent(): true
Info totalCpuDuration().isPresent(): true
Info user().isPresent(): true
---------
Id: 7972
isAlive(): true
number of childrens: 0
isSupportsNormalTermination(): false
Info: [user: Optional[Tutorialspoint\User], cmd: C:\Program Files (x86)\Google\Chrome\Application\chrome.exe, startTime: Optional[2020-03-09T03:26:03.118Z], totalTime: Optional[PT29.09375S]]
Info arguments().isPresent(): false
Info command().isPresent(): true
Info totalCpuDuration().isPresent(): true
Info user().isPresent(): true
---------
Id: 3368
isAlive(): true
number of childrens: 0
isSupportsNormalTermination(): false
Info: [user: Optional[Tutorialspoint\User], cmd: C:\Program Files (x86)\Google\Chrome\Application\chrome.exe, startTime: Optional[2020-03-09T03:27:26.511Z], totalTime: Optional[PT37.84375S]]
Info arguments().isPresent(): false
Info command().isPresent(): true
Info totalCpuDuration().isPresent(): true
Info user().isPresent(): true
---------
Id: 2456
isAlive(): true
number of childrens: 0
isSupportsNormalTermination(): false
Info: [user: Optional[Tutorialspoint\User], cmd: C:\WINDOWS\System32\conhost.exe, startTime: Optional[2020-03-09T03:30:49.514Z], totalTime: Optional[PT0.390625S]]
Info arguments().isPresent(): false
Info command().isPresent(): true
Info totalCpuDuration().isPresent(): true
Info user().isPresent(): true
---------
Id: 7804
isAlive(): true
number of childrens: 4
isSupportsNormalTermination(): false
Info: [user: Optional[Tutorialspoint\User], cmd: C:\Program Files\Mozilla Firefox\firefox.exe, startTime: Optional[2020-03-09T03:30:51.441Z], totalTime: Optional[PT38.046875S]]
Info arguments().isPresent(): false
Info command().isPresent(): true
Info totalCpuDuration().isPresent(): true
Info user().isPresent(): true
---------
Id: 8172
isAlive(): true
number of childrens: 0
isSupportsNormalTermination(): false
Info: [user: Optional[Tutorialspoint\User], cmd: C:\Program Files\Mozilla Firefox\firefox.exe, startTime: Optional[2020-03-09T03:30:53.293Z], totalTime: Optional[PT4.03125S]]
Info arguments().isPresent(): false
Info command().isPresent(): true
Info totalCpuDuration().isPresent(): true
Info user().isPresent(): true
---------
Id: 6008
isAlive(): true
number of childrens: 0
isSupportsNormalTermination(): false
Info: [user: Optional[Tutorialspoint\User], cmd: C:\Program Files\Mozilla Firefox\firefox.exe, startTime: Optional[2020-03-09T03:30:54.081Z], totalTime: Optional[PT5M28.078125S]]
Info arguments().isPresent(): false
Info command().isPresent(): true
Info totalCpuDuration().isPresent(): true
Info user().isPresent(): true
---------
Id: 1032
isAlive(): false
number of childrens: 0
isSupportsNormalTermination(): false
Info: []
Info arguments().isPresent(): false
Info command().isPresent(): false
Info totalCpuDuration().isPresent(): false
Info user().isPresent(): false
---------
Id: 5044
isAlive(): true
number of childrens: 0
isSupportsNormalTermination(): false
Info: [user: Optional[Tutorialspoint\User], cmd: C:\Program Files\Java\jdk-9.0.4\bin\java.exe, startTime: Optional[2020-03-09T04:12:39.567Z], totalTime: Optional[PT1.28125S]]
Info arguments().isPresent(): false
Info command().isPresent(): true
Info totalCpuDuration().isPresent(): true
Info user().isPresent(): true