From 597602a47833af962dae2c32f5acc50ad6d9f6d2 Mon Sep 17 00:00:00 2001 From: Marcos Lopez Gonzalez Date: Thu, 13 Sep 2018 22:37:40 +0200 Subject: [PATCH 1/2] BAEL-2171 - java heap dumps --- .../java/com/baeldung/heapdump/HeapDump.java | 23 +++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 core-java/src/main/java/com/baeldung/heapdump/HeapDump.java diff --git a/core-java/src/main/java/com/baeldung/heapdump/HeapDump.java b/core-java/src/main/java/com/baeldung/heapdump/HeapDump.java new file mode 100644 index 0000000000..1619bc43ae --- /dev/null +++ b/core-java/src/main/java/com/baeldung/heapdump/HeapDump.java @@ -0,0 +1,23 @@ +package com.baeldung.heapdump; + +import com.sun.management.HotSpotDiagnosticMXBean; + +import javax.management.MBeanServer; +import java.io.IOException; +import java.lang.management.ManagementFactory; + +public class HeapDump { + + public static void dumpHeap(String filePath, boolean live) throws IOException { + MBeanServer server = ManagementFactory.getPlatformMBeanServer(); + HotSpotDiagnosticMXBean mxBean = ManagementFactory.newPlatformMXBeanProxy( + server, "com.sun.management:type=HotSpotDiagnostic", HotSpotDiagnosticMXBean.class); + mxBean.dumpHeap(filePath, live); + } + + public static void main(String[] args) throws IOException { + final String file = "/tmp/dump.hprof"; + + dumpHeap(file, true); + } +} From a48f3851763c5aef7958ecd15d66e8ce607e6720 Mon Sep 17 00:00:00 2001 From: Marcos Lopez Gonzalez Date: Mon, 17 Sep 2018 18:13:09 +0200 Subject: [PATCH 2/2] File creation for dump changed --- core-java/src/main/java/com/baeldung/heapdump/HeapDump.java | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/core-java/src/main/java/com/baeldung/heapdump/HeapDump.java b/core-java/src/main/java/com/baeldung/heapdump/HeapDump.java index 1619bc43ae..8cce20de8d 100644 --- a/core-java/src/main/java/com/baeldung/heapdump/HeapDump.java +++ b/core-java/src/main/java/com/baeldung/heapdump/HeapDump.java @@ -3,8 +3,10 @@ package com.baeldung.heapdump; import com.sun.management.HotSpotDiagnosticMXBean; import javax.management.MBeanServer; + import java.io.IOException; import java.lang.management.ManagementFactory; +import java.nio.file.Paths; public class HeapDump { @@ -16,7 +18,7 @@ public class HeapDump { } public static void main(String[] args) throws IOException { - final String file = "/tmp/dump.hprof"; + String file = Paths.get("dump.hprof").toFile().getPath(); dumpHeap(file, true); }