com.scudata.parallel.HostManager Maven / Gradle / Ivy

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SPL(Structured Process Language) A programming language specially for structured data computing.

There is a newer version: 20240823

package com.scudata.parallel;

import com.scudata.common.MessageManager;
import com.scudata.resources.ParallelMessage;

/**
 * ?ֻ???????
 * 
 * @author Joancy
 *
 */
public class HostManager {
	private static HostManager instance = null;
	// ?????߳?ִ??ʱ??host???ᱻ??ֵ???ڷֻ????????Ż???host
	String host = null;
	int port;
	
	static int preferredTaskNum = Runtime.getRuntime().availableProcessors();
	static int maxTaskNum = preferredTaskNum * 4;

	static MessageManager mm = ParallelMessage.get();
	
	private HostManager() {
	}

	/**
	 * ?ֻ?????????Ψһʵ??
	 * @return ?ֻ???????
	 */
	public static HostManager instance() {
		if (instance == null) {
			instance = new HostManager();
		}
		return instance;
	}

	/**
	 * ??ȡ?ֻ???ip
	 * @return ip??ַ
	 */
	public String getHost() {
		return host;
	}

	/**
	 * ???÷ֻ?IP
	 * @param ip ip??ַ
	 */
	public void setHost(String ip) {
		host = ip;
//		Env.setLocalHost(ip);
	}

	/**
	 * ??ȡ?ֻ??˿ں?
	 * @return ?˿ں?
	 */
	public int getPort() {
		return port;
	}

	/**
	 * ???÷ֻ??Ķ˿ں?
	 * @param p ?˿ں?
	 */
	public void setPort(int p) {
		port = p;
//		Env.setLocalPort(p);
	}

	/**
	 * ??ȡ?ֻ??????ҵ??
	 * @return
	 */
	public int getMaxTaskNum() {
		return maxTaskNum;
	}

	/**
	 * ?????????ҵ??Ŀ
	 * @param num ??ҵ??Ŀ
	 */
	public void setMaxTaskNum(int num) {
		maxTaskNum = num;
	}

	/**
	 * ?ֻ??ʺ???ҵ??
	 * @return
	 */
	public int getPreferredTaskNum() {
		return preferredTaskNum;
	}

	/**
	 * ???÷ֻ????ʺ???ҵ??
	 * @param num ?ʺ???ҵ??
	 */
	public void setPreferredTaskNum(int num) {
		preferredTaskNum = num;
	}

	/**
	 * ??ȡ??ǰ?????????????
	 * @return ??ǰ??????????Ŀ
	 */
	public int getCurrentTasks() {
		return PerfMonitor.getConcurrentTasks();
	}

	/**
	 * ʵ??toString??????Ϣ
	 */
	public String toString() {
		if (host == null) {
			return "local";
		}
		return host + ":" + port;
	}

	/**
	 * ?Ƿ?windowsϵͳ
	 * @return windows????true?????򷵻?false
	 */
	public static boolean isWindows() {
		String osName = System.getProperty("os.name");
		return osName.startsWith("Windows");
	}


}