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[GR-38951] Introduce -XX:+DumpHeapAndExit option. #4612

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Merged
merged 1 commit into from
Jun 1, 2022
Merged

[GR-38951] Introduce -XX:+DumpHeapAndExit option. #4612

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16 changes: 15 additions & 1 deletion substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/JavaMainWrapper.java
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
Expand All @@ -24,6 +24,7 @@
*/
package com.oracle.svm.core;

import java.io.File;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.reflect.Method;
Expand All @@ -45,6 +46,7 @@
import org.graalvm.nativeimage.c.type.CCharPointerPointer;
import org.graalvm.nativeimage.c.type.CTypeConversion;
import org.graalvm.nativeimage.c.type.CTypeConversion.CCharPointerHolder;
import org.graalvm.nativeimage.impl.HeapDumpSupport;
import org.graalvm.word.Pointer;
import org.graalvm.word.UnsignedWord;
import org.graalvm.word.WordFactory;
Expand Down Expand Up @@ -134,6 +136,18 @@ private static int runCore() {
*/
private static int runCore0() {
try {
if (SubstrateOptions.DumpHeapAndExit.getValue()) {
if (VMInspectionOptions.AllowVMInspection.getValue() && ImageSingletons.contains(HeapDumpSupport.class)) {
String absoluteHeapDumpPath = new File(SubstrateOptions.Name.getValue() + ".hprof").getAbsolutePath();
VMRuntime.dumpHeap(absoluteHeapDumpPath, true);
System.out.println("Heap dump created at '" + absoluteHeapDumpPath + "'.");
return 0;
} else {
System.err.println("Unable to dump heap. Heap dumping is only supported for native images built with `-H:+AllowVMInspection` and GraalVM Enterprise Edition.");
return 1;
}
}

if (SubstrateOptions.ParseRuntimeOptions.getValue()) {
/*
* When options are not parsed yet, it is also too early to run the startup hooks
Expand Down
3 changes: 3 additions & 0 deletions substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/SubstrateOptions.java
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Expand Up @@ -722,6 +722,9 @@ public Boolean getValue(OptionValues values) {
}
};

@Option(help = "Create a heap dump and exit.")//
public static final RuntimeOptionKey<Boolean> DumpHeapAndExit = new ImmutableRuntimeOptionKey<>(false);

@Option(help = "Enable Java Flight Recorder.")//
public static final RuntimeOptionKey<Boolean> FlightRecorder = new ImmutableRuntimeOptionKey<>(false);

Expand Down