How to use dumpHeap method of sun.tools.attach.HotSpotVirtualMachine class

Best Powermock code snippet using sun.tools.attach.HotSpotVirtualMachine.dumpHeap

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...30 } finally {31 virtualMachine.detach();32 }33 }34 public static String dumpHeap(int pid, Object... args) throws Exception {35 HotSpotVirtualMachine virtualMachine = (HotSpotVirtualMachine) VirtualMachine.attach(String.valueOf(pid));36 try {37 InputStream ins = virtualMachine.dumpHeap(ArrayUtils.isNotEmpty(args) ? args : new Object[0]);38 return IOUtils.toString(ins, Charset.defaultCharset());39 } finally {40 virtualMachine.detach();41 }42 }43 public static void main(String[] args) throws Exception {44 System.out.println(dumpHeap(15664, "-permstat"));45 }46}...

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...34 /​/​ jstack35 InputStream ins = vm.remoteDataDump("-1");36 dumpStream(ins);37 /​/​ jmap -dump38 ins = vm.dumpHeap("stack.dmp");39 dumpStream(ins);40 } catch (Exception e) {41 System.err.println("attach failed");42 } finally {43 try {44 if (vm != null) {45 vm.detach();46 }47 } catch (Exception e) {48 }49 }50 }51}...

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...23 HotSpotVirtualMachine hsvm = (HotSpotVirtualMachine) vm;24 try {25 String currentDir = System.getProperty("user.dir");26 File file = new File(currentDir, "spectre-output/​" + args[2]);27 hsvm.dumpHeap(file.getAbsolutePath());28 System.out.println("filepath: " + file.getAbsolutePath());29 } catch (IOException e) {30 log.error("", e);31 }32 }33 return null;34 }35}...

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dumpHeap

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1import java.io.IOException;2import sun.tools.attach.*;3public class 4 {4 public static void main(String[] args) throws IOException {5 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach("pid");6 vm.dumpHeap("heap.bin", false);7 }8}9import java.io.IOException;10import sun.tools.attach.*;11public class 5 {12 public static void main(String[] args) throws IOException {13 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach("pid");14 vm.dumpHeap("heap.bin", true);15 }16}17import java.io.IOException;18import sun.tools.attach.*;19public class 6 {20 public static void main(String[] args) throws IOException {21 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach("pid");22 vm.dumpHeap("heap.bin", false);23 }24}25import java.io.IOException;26import sun.tools.attach.*;27public class 7 {28 public static void main(String[] args) throws IOException {29 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach("pid");30 vm.dumpHeap("heap.bin", true);31 }32}33import java.io.IOException;34import sun.tools.attach.*;35public class 8 {36 public static void main(String[] args) throws IOException {37 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach("pid");38 vm.dumpHeap("heap.bin", false);39 }40}41import java.io.IOException;42import sun.tools.attach.*;43public class 9 {44 public static void main(String[] args) throws IOException {45 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach("pid");46 vm.dumpHeap("heap.bin", true);47 }48}

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dumpHeap

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1import java.io.IOException;2import java.lang.management.ManagementFactory;3import java.lang.management.RuntimeMXBean;4import java.lang.reflect.Field;5import java.lang.reflect.Method;6import java.util.List;7import java.util.Properties;8import com.sun.tools.attach.VirtualMachine;9public class 4 {10public static void main(String[] args) throws Exception {11RuntimeMXBean runtimeBean = ManagementFactory.getRuntimeMXBean();12Field jvm = runtimeBean.getClass().getDeclaredField("jvm");13jvm.setAccessible(true);14sun.management.VMManagement mgmt = (sun.management.VMManagement) jvm.get(runtimeBean);15Method pid_method = mgmt.getClass().getDeclaredMethod("getProcessId");16pid_method.setAccessible(true);17int pid = (Integer) pid_method.invoke(mgmt);18VirtualMachine vm = VirtualMachine.attach(String.valueOf(pid));19Properties props = vm.getSystemProperties();20String javaHome = props.getProperty("java.home");21String jmapPath = javaHome + "/​bin/​jmap";22String heapDumpFile = "heapDumpFile.hprof";23vm.executeJMap(jmapPath, "-dump:format=b,file=" + heapDumpFile);24vm.detach();25}26}

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dumpHeap

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1import java.io.*;2import java.lang.management.*;3import java.util.*;4import sun.tools.attach.*;5import com.sun.tools.attach.*;6public class 4 {7 public static void main(String[] args) throws Exception {8 String pid = "12345";9 HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach(pid);10 vm.dumpHeap("c:\\heapdump.hprof", true);11 vm.detach();12 }13}14import java.io.*;15import java.lang.management.*;16import java.util.*;17import sun.tools.attach.*;18import com.sun.tools.attach.*;19public class 5 {20 public static void main(String[] args) throws Exception {21 String pid = "12345";22 HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach(pid);23 vm.dumpHeap("c:\\heapdump.hprof", true);24 vm.detach();25 }26}27import java.io.*;28import java.lang.management.*;29import java.util.*;30import sun.tools.attach.*;31import com.sun.tools.attach.*;32public class 6 {33 public static void main(String[] args) throws Exception {34 String pid = "12345";35 HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach(pid);36 vm.dumpHeap("c:\\heapdump.hprof", true);37 vm.detach();38 }39}40import java.io.*;41import java.lang.management.*;42import java.util.*;43import sun.tools.attach.*;44import com.sun.tools.attach.*;45public class 7 {46 public static void main(String[] args) throws Exception {47 String pid = "12345";48 HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach(pid);49 vm.dumpHeap("c:\\heapdump.hprof", true);50 vm.detach();51 }52}53import java.io.*;54import java.lang.management.*;55import java.util.*;56import sun.tools.attach.*;57import com.sun.tools.attach.*;58public class 8 {59 public static void main(String[] args) throws Exception {

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dumpHeap

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1import com.sun.tools.attach.*;2import java.io.*;3import java.util.*;4public class 4 {5 public static void main(String[] args) throws Exception {6 String pid = "1234";7 String filename = "heap.bin";8 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach(pid);9 vm.dumpHeap(filename);10 }11}12import com.sun.tools.attach.*;13import java.io.*;14import java.util.*;15public class 5 {16 public static void main(String[] args) throws Exception {17 String pid = "1234";18 String filename = "heap.bin";19 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach(pid);20 vm.dumpHeap(filename);21 }22}23import com.sun.tools.attach.*;24import java.io.*;25import java.util.*;26public class 6 {27 public static void main(String[] args) throws Exception {28 String pid = "1234";29 String filename = "heap.bin";30 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach(pid);31 vm.dumpHeap(filename);32 }33}34import com.sun.tools.attach.*;35import java.io.*;36import java.util.*;37public class 7 {38 public static void main(String[] args) throws Exception {39 String pid = "1234";40 String filename = "heap.bin";41 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach(pid);42 vm.dumpHeap(filename);43 }44}45import com.sun.tools.attach.*;46import java.io.*;47import java.util.*;48public class 8 {49 public static void main(String[] args) throws Exception {50 String pid = "1234";51 String filename = "heap.bin";52 HotSpotVirtualMachine vm = (HotSpot

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1import sun.tools.attach.*;2import com.sun.tools.attach.*;3import java.io.*;4import java.util.*;5public class 4 {6 public static void main(String args[]) {7 try {8 String pid = args[0];9 VirtualMachine vm = VirtualMachine.attach(pid);10 String dumpfile = "heapdump.hprof";11 vm.dumpHeap(dumpfile);12 vm.detach();13 } catch (Exception e) {14 e.printStackTrace();15 }16 }17}

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1import java.io.*;2import com.sun.tools.attach.*;3public class 4 {4 public static void main(String[] args) throws Exception {5 String pid = args[0];6 String fileName = args[1];7 HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach(pid);8 vm.dumpHeap(fileName, true);9 vm.detach();10 }11}12import java.io.*;13import java.util.*;14import com.sun.tools.attach.*;15public class 5 {16 public static void main(String[] args) throws Exception {17 String pid = args[0];18 HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach(pid);19 Properties props = vm.getSystemProperties();20 props.list(System.out);21 vm.detach();22 }23}

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