jvm调优测试仓库-jvm-monitor.zip

package cn.hust.jvmmonitor.chapter2; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import java.util.ArrayList; import java.util.List; @RestController public class CpuController { /** * 死循环 * */ @RequestMapping("/loop") public List<Long> loop(){ String data = "{\"data\":[{\"partnerid\":]"; return getPartneridsFromJson(data); } private Object lock1 = new Object(); private Object lock2 = new Object(); /** * 死锁 * */ @RequestMapping("/deadlock") public String deadlock(){ new Thread(()->{ synchronized(lock1) { try {Thread.sleep(1000);}catch(Exception e) {} synchronized(lock2) { System.out.println("Thread1 over"); } } }) .start(); new Thread(()->{ synchronized(lock2) { try {Thread.sleep(1000);}catch(Exception e) {} synchronized(lock1) { System.out.println("Thread2 over"); } } }) .start(); return "deadlock"; } public static List<Long> getPartneridsFromJson(String data){ //{\"data\":[{\"partnerid\":982,\"count\":\"10000\",\"cityid\":\"11\"},{\"partnerid\":983,\"count\":\"10000\",\"cityid\":\"11\"},{\"partnerid\":984,\"count\":\"10000\",\"cityid\":\"11\"}]} //上面是正常的数据 List<Long> list = new ArrayList<Long>(2); if(data == null || data.length() <= 0){ return list; } int datapos = data.indexOf("data"); if(datapos < 0){ return list; } int leftBracket = data.indexOf("[",datapos); int rightBracket= data.indexOf("]",datapos); if(leftBracket < 0 || rightBracket < 0){ return list; } String partners = data.substring(leftBracket+1,rightBracket); if(partners == null || partners.length() <= 0){ return list; } while(partners!=null && partners.length() > 0){ int idpos = partners.indexOf("partnerid"); if(idpos < 0){ break; } int colonpos = partners.indexOf(":",idpos); int commapos = partners.indexOf(",",idpos); if(colonpos < 0 || commapos < 0){ //partners = partners.substring(idpos+"partnerid".length());//1 continue; } String pid = partners.substring(colonpos+1,commapos); if(pid == null || pid.length() <= 0){ //partners = partners.substring(idpos+"partnerid".length());//2 continue; } try{ list.add(Long.parseLong(pid)); }catch(Exception e){ //do nothing } partners = partners.substring(commapos); } return list; } }