ネイティブリファレンスガイド

$ quarkus-project-0.1-SNAPSHOT-runner -XX:+PrintGC -Xmx64m
...
[Incremental GC (CollectOnAllocation) 20480K->11264K, 0.0003223 secs]
[Full GC (CollectOnAllocation) 19456K->5120K, 0.0031067 secs]

$ quarkus-project-0.1-SNAPSHOT-runner -XX:+PrintGC -XX:+VerboseGC -Xmx64m
[Heap policy parameters:
YoungGenerationSize: 25165824
MaximumHeapSize: 67108864
MinimumHeapSize: 33554432
AlignedChunkSize: 1048576
LargeArrayThreshold: 131072]
...
[[5378479783321 GC: before  epoch: 8  cause: CollectOnAllocation]
[Incremental GC (CollectOnAllocation) 16384K->9216K, 0.0003847 secs]
[5378480179046 GC: after   epoch: 8  cause: CollectOnAllocation  policy: adaptive  type: incremental
collection time: 384755 nanoSeconds]]
[[5379294042918 GC: before  epoch: 9  cause: CollectOnAllocation]
[Full GC (CollectOnAllocation) 17408K->5120K, 0.0030556 secs]
[5379297109195 GC: after   epoch: 9  cause: CollectOnAllocation  policy: adaptive  type: complete
collection time: 3055697 nanoSeconds]]

$ quarkus-project-0.1-SNAPSHOT-runner -XX:PrintFlags=
...
  -XX:±PrintGC                                 Print summary GC information after each collection. Default: - (disabled).
  -XX:±PrintGCSummary                          Print summary GC information after application main method returns. Default: - (disabled).
  -XX:±PrintGCTimeStamps                       Print a time stamp at each collection, if +PrintGC or +VerboseGC. Default: - (disabled).
  -XX:±PrintGCTimes                            Print the time for each of the phases of each collection, if +VerboseGC. Default: - (disabled).
  -XX:±PrintHeapShape                          Print the shape of the heap before and after each collection, if +VerboseGC. Default: - (disabled).
...
  -XX:±TraceHeapChunks                         Trace heap chunks during collections, if +VerboseGC and +PrintHeapShape. Default: - (disabled).
  -XX:±VerboseGC                               Print more information about the heap before and after each collection. Default: - (disabled).

<plugin>
    <groupId>${quarkus.platform.group-id}</groupId>
    <artifactId>quarkus-maven-plugin</artifactId>
    ...
    <executions>
        <execution>
            <goals>
                ...
                <goal>native-image-agent</goal>
            </goals>
        </execution>
    </executions>
</plugin>

$ ./mvnw verify -DskipITs=false -Dquarkus.test.integration-test-profile=test-with-native-agent
...
[INFO] --- failsafe:3.5.2:integration-test (default) @ new-project ---
...
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.acme.GreetingResourceIT
2024-05-14 16:29:53,941 INFO  [io.qua.tes.com.DefaultDockerContainerLauncher] (main) Executing "podman run --name quarkus-integration-test-PodgW -i --rm --user 501:20 -p 8081:8081 -p 8444:8444 --entrypoint java -v /tmp/new-project/target:/project --env QUARKUS_LOG_CATEGORY__IO_QUARKUS__LEVEL=INFO --env QUARKUS_HTTP_PORT=8081 --env QUARKUS_HTTP_SSL_PORT=8444 --env TEST_URL=http://localhost:8081 --env QUARKUS_PROFILE=test-with-native-agent --env QUARKUS_TEST_INTEGRATION_TEST_PROFILE=test-with-native-agent quay.io/quarkus/ubi9-quarkus-mandrel-builder-image:jdk-21 -agentlib:native-image-agent=access-filter-file=quarkus-access-filter.json,caller-filter-file=quarkus-caller-filter.json,config-output-dir=native-image-agent-base-config, -jar quarkus-app/quarkus-run.jar"
...
[INFO]
[INFO] --- quarkus:3.19.4:native-image-agent (default) @ new-project ---
[INFO] Discovered native image agent generated files in /tmp/new-project/target/native-image-agent-final-config
[INFO]
...

$ cat ./target/native-image-agent-final-config/reflect-config.json
[
...
{
  "name":"org.acme.Alice",
  "methods":[{"name":"<init>","parameterTypes":[] }, {"name":"sayMyName","parameterTypes":[] }]
},
{
  "name":"org.acme.Bob"
},
...
]

$ ./mvnw verify -DskipITs=false -Dquarkus.test.integration-test-profile=test-with-native-agent
...
[INFO] --- quarkus:3.19.4:native-image-agent (default) @ new-project ---
[INFO] Discovered native image agent generated files in /tmp/new-project/target/native-image-agent-final-config

$ ./mvnw verify -Dnative -Dquarkus.native.agent-configuration-apply
...
[INFO] --- quarkus:3.19.4:build (default) @ new-project ---
[INFO] [io.quarkus.deployment.pkg.steps.JarResultBuildStep] Building native image source jar: /tmp/new-project/target/new-project-1.0.0-SNAPSHOT-native-image-source-jar/new-project-1.0.0-SNAPSHOT-runner.jar
[INFO] [io.quarkus.deployment.steps.ApplyNativeImageAgentConfigStep] Applying native image agent generated files to current native executable build

quarkus.native.container-build=true
quarkus.native.builder-image=quay.io/quarkus/ubi9-quarkus-mandrel-builder-image:jdk-21
quarkus.container-image.build=true
quarkus.container-image.group=test

./mvnw package -DskipTests -Dnative

docker run -i --rm -p 8080:8080 test/debugging-native:1.0.0-SNAPSHOT

curl -w '\n' http://localhost:8080/hello

./mvnw package -DskipTests -Dnative \
    -Dquarkus.native.additional-build-args=--native-image-info

...
# Printing compilation-target information to: /project/reports/target_info_20220223_100915.txt
…
# Printing native-library information to: /project/reports/native_library_info_20220223_100925.txt

$ cat target/*/reports/target_info_*.txt
Building image for target platform: org.graalvm.nativeimage.Platform$LINUX_AMD64
Using native toolchain:
   Name: GNU project C and C++ compiler (gcc)
   Vendor: redhat
   Version: 8.5.0
   Target architecture: x86_64
   Path: /usr/bin/gcc
Using CLibrary: com.oracle.svm.core.posix.linux.libc.GLib

$ cat target/*/reports/native_library_info_*.txt
Static libraries:
   ../opt/mandrel/lib/svm/clibraries/linux-amd64/liblibchelper.a
   ../opt/mandrel/lib/static/linux-amd64/glibc/libnet.a
   ../opt/mandrel/lib/static/linux-amd64/glibc/libextnet.a
   ../opt/mandrel/lib/static/linux-amd64/glibc/libnio.a
   ../opt/mandrel/lib/static/linux-amd64/glibc/libjava.a
   ../opt/mandrel/lib/static/linux-amd64/glibc/libfdlibm.a
   ../opt/mandrel/lib/static/linux-amd64/glibc/libsunec.a
   ../opt/mandrel/lib/static/linux-amd64/glibc/libzip.a
   ../opt/mandrel/lib/svm/clibraries/linux-amd64/libjvm.a
Other libraries: stdc++,pthread,dl,z,rt

./mvnw package -DskipTests -Dnative \
    -Dquarkus.native.additional-build-args=--verbose

./mvnw package -DskipTests -Dnative \
    -Dquarkus.native.additional-build-args=--native-image-info,--verbose

FROM fedora:35

RUN dnf install -y \
binutils \
gdb \
git \
perf \
perl-open

ENV FG_HOME /opt/FlameGraph

RUN git clone https://github.com/brendangregg/FlameGraph $FG_HOME

WORKDIR /data

ENTRYPOINT /bin/bash

docker build -t fedora-tools:v1 .

docker run -t -i --rm -v ${PWD}:/data -p 8080:8080 fedora-tools:v1

ldd ./target/debugging-native-1.0.0-SNAPSHOT-runner

strings ./target/debugging-native-1.0.0-SNAPSHOT-runner | grep Hello

strings ./target/debugging-native-1.0.0-SNAPSHOT-runner | grep core.VM

readelf -SW ./target/debugging-native-1.0.0-SNAPSHOT-runner

./mvnw package -DskipTests -Dnative \
    -Dquarkus.native.enable-reports

package org.acme;

import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import jakarta.ws.rs.core.MediaType;

@Path("/timestamp")
public class TimestampResource {

    static long firstAccess = System.currentTimeMillis();

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String timestamp() {
        return "First access " + firstAccess;
    }
}

./mvnw package -DskipTests -Dnative

docker run -i --rm -p 8080:8080 test/debugging-native:1.0.0-SNAPSHOT

curl -w '\n' http://localhost:8080/timestamp # run this multiple times

package org.acme;

import javax.crypto.Cipher;
import javax.crypto.NoSuchPaddingException;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import java.nio.charset.StandardCharsets;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;

@Path("/encrypt-decrypt")
public class EncryptDecryptResource {

    static final KeyPairGenerator KEY_PAIR_GEN;
    static final Cipher CIPHER;

    static {
        try {
            KEY_PAIR_GEN = KeyPairGenerator.getInstance("RSA");
            KEY_PAIR_GEN.initialize(1024);

            CIPHER = Cipher.getInstance("RSA");
        } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
            throw new RuntimeException(e);
        }
    }

    @GET
    @Path("/{message}")
    public String encryptDecrypt(String message) throws Exception {
        KeyPair keyPair = KEY_PAIR_GEN.generateKeyPair();

        byte[] text = message.getBytes(StandardCharsets.UTF_8);

        // Encrypt with private key
        CIPHER.init(Cipher.ENCRYPT_MODE, keyPair.getPrivate());
        byte[] encrypted = CIPHER.doFinal(text);

        // Decrypt with public key
        CIPHER.init(Cipher.DECRYPT_MODE, keyPair.getPublic());
        byte[] unencrypted = CIPHER.doFinal(encrypted);

        return new String(unencrypted, StandardCharsets.UTF_8);
    }
}

./mvnw package -DskipTests -Dnative
...
Error: Unsupported features in 2 methods
Detailed message:
Error: Detected an instance of Random/SplittableRandom class in the image heap. Instances created during image generation have cached seed values and don't behave as expected.  To see how this object got instantiated use --trace-object-instantiation=java.security.SecureRandom. The object was probably created by a class initializer and is reachable from a static field. You can request class initialization at image runtime by using the option --initialize-at-run-time=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: Object was reached by
	reading field java.security.KeyPairGenerator$Delegate.initRandom of
		constant java.security.KeyPairGenerator$Delegate@58b0fe1b reached by
	reading field org.acme.EncryptDecryptResource.KEY_PAIR_GEN
Error: Detected an instance of Random/SplittableRandom class in the image heap. Instances created during image generation have cached seed values and don't behave as expected.  To see how this object got instantiated use --trace-object-instantiation=java.security.SecureRandom. The object was probably created by a class initializer and is reachable from a static field. You can request class initialization at image runtime by using the option --initialize-at-run-time=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: Object was reached by
	reading field sun.security.rsa.RSAKeyPairGenerator.random of
		constant sun.security.rsa.RSAKeyPairGenerator$Legacy@3248a092 reached by
	reading field java.security.KeyPairGenerator$Delegate.spi of
		constant java.security.KeyPairGenerator$Delegate@58b0fe1b reached by
	reading field org.acme.EncryptDecryptResource.KEY_PAIR_GEN

./mvnw package -DskipTests -Dnative \
    -Dquarkus.native.additional-build-args="--trace-object-instantiation=java.security.SecureRandom"
...
Error: Unsupported features in 2 methods
Detailed message:
Error: Detected an instance of Random/SplittableRandom class in the image heap. Instances created during image generation have cached seed values and don't behave as expected.  Object has been initialized by the com.sun.jndi.dns.DnsClient class initializer with a trace:
 	at java.security.SecureRandom.<init>(SecureRandom.java:218)
	at sun.security.jca.JCAUtil$CachedSecureRandomHolder.<clinit>(JCAUtil.java:59)
	at sun.security.jca.JCAUtil.getSecureRandom(JCAUtil.java:69)
	at com.sun.jndi.dns.DnsClient.<clinit>(DnsClient.java:82)
. Try avoiding to initialize the class that caused initialization of the object. The object was probably created by a class initializer and is reachable from a static field. You can request class initialization at image runtime by using the option --initialize-at-run-time=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: Object was reached by
	reading field java.security.KeyPairGenerator$Delegate.initRandom of
		constant java.security.KeyPairGenerator$Delegate@4a5058f9 reached by
	reading field org.acme.EncryptDecryptResource.KEY_PAIR_GEN
Error: Detected an instance of Random/SplittableRandom class in the image heap. Instances created during image generation have cached seed values and don't behave as expected.  Object has been initialized by the com.sun.jndi.dns.DnsClient class initializer with a trace:
 	at java.security.SecureRandom.<init>(SecureRandom.java:218)
	at sun.security.jca.JCAUtil$CachedSecureRandomHolder.<clinit>(JCAUtil.java:59)
	at sun.security.jca.JCAUtil.getSecureRandom(JCAUtil.java:69)
	at com.sun.jndi.dns.DnsClient.<clinit>(DnsClient.java:82)
. Try avoiding to initialize the class that caused initialization of the object. The object was probably created by a class initializer and is reachable from a static field. You can request class initialization at image runtime by using the option --initialize-at-run-time=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: Object was reached by
	reading field sun.security.rsa.RSAKeyPairGenerator.random of
		constant sun.security.rsa.RSAKeyPairGenerator$Legacy@71880cf1 reached by
	reading field java.security.KeyPairGenerator$Delegate.spi of
		constant java.security.KeyPairGenerator$Delegate@4a5058f9 reached by
	reading field org.acme.EncryptDecryptResource.KEY_PAIR_GEN

$ ./mvnw package -DskipTests -Dnative
...
$ docker run -i --rm -p 8080:8080 test/debugging-native:1.0.0-SNAPSHOT
...
$ curl -w '\n' http://localhost:8080/encrypt-decrypt/hellomandrel
hellomandrel

package org.acme;

import sun.misc.Unsafe;

import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import jakarta.ws.rs.core.MediaType;
import java.lang.reflect.Field;

@Path("/crash")
public class CrashResource {

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String hello() {
        Field theUnsafe = null;
        try {
            theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
            theUnsafe.setAccessible(true);
            Unsafe unsafe = (Unsafe) theUnsafe.get(null);
            unsafe.copyMemory(0, 128, 256);
        } catch (NoSuchFieldException | IllegalAccessException e) {
            e.printStackTrace();
        }
        return "Never happens";
    }
}

$ ./mvnw package -DskipTests -Dnative
...
$ docker run -i --rm -p 8080:8080 test/debugging-native:1.0.0-SNAPSHOT
...
$ curl http://localhost:8080/crash

$ docker run -i --rm -p 8080:8080 test/debugging-native:1.0.0-SNAPSHOT
...
Segfault detected, aborting process. Use runtime option -R:-InstallSegfaultHandler if you don't want to use SubstrateSegfaultHandler.
...

docker run -t -i --rm -v ${PWD}:/data -p 8080:8080 fedora-tools:v1 /bin/bash

gdb ./target/debugging-native-1.0.0-SNAPSHOT-runner
...
Reading symbols from ./target/debugging-native-1.0.0-SNAPSHOT-runner...
(No debugging symbols found in ./target/debugging-ntaive-1.0.0-SNAPSHOT-runner)
(gdb) run
Starting program: /data/target/debugging-native-1.0.0-SNAPSHOT-runner

curl http://localhost:8080/crash

Thread 4 "ecutor-thread-0" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fe103dff640 (LWP 190)]
0x0000000000461f6e in ?? ()

(gdb) bt
#0  0x0000000000418b5e in ?? ()
#1  0x00007ffff6f2d328 in ?? ()
#2  0x0000000000418a04 in ?? ()
#3  0x00007ffff44062a0 in ?? ()
#4  0x00000000010c3dd3 in ?? ()
#5  0x0000000000000100 in ?? ()
#6  0x0000000000000000 in ?? ()

./mvnw package -DskipTests -Dnative \
    -Dquarkus.native.debug.enabled \
    -Dquarkus.native.additional-build-args=-H:-OmitInlinedMethodDebugLineInfo
...
$ gdb ./target/debugging-native-1.0.0-SNAPSHOT-runner
Reading symbols from ./target/debugging-native-1.0.0-SNAPSHOT-runner...
(gdb) run
Starting program: /data/target/debugging-native-1.0.0-SNAPSHOT-runner
...
$ curl http://localhost:8080/crash

Thread 4 "ecutor-thread-0" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffeffff640 (LWP 362984)]
com.oracle.svm.core.UnmanagedMemoryUtil::copyLongsBackward(org.graalvm.word.Pointer *, org.graalvm.word.Pointer *, org.graalvm.word.UnsignedWord *) ()
	at com/oracle/svm/core/UnmanagedMemoryUtil.java:169
169    com/oracle/svm/core/UnmanagedMemoryUtil.java: No such file or directory.

(gdb) bt
#0  com.oracle.svm.core.UnmanagedMemoryUtil::copyLongsBackward(org.graalvm.word.Pointer *, org.graalvm.word.Pointer *, org.graalvm.word.UnsignedWord *) () at com/oracle/svm/core/UnmanagedMemoryUtil.java:169
#1  0x0000000000461e14 in com.oracle.svm.core.UnmanagedMemoryUtil::copyBackward(org.graalvm.word.Pointer *, org.graalvm.word.Pointer *, org.graalvm.word.UnsignedWord *) () at com/oracle/svm/core/UnmanagedMemoryUtil.java:110
#2  0x0000000000461dc8 in com.oracle.svm.core.UnmanagedMemoryUtil::copy(org.graalvm.word.Pointer *, org.graalvm.word.Pointer *, org.graalvm.word.UnsignedWord *) () at com/oracle/svm/core/UnmanagedMemoryUtil.java:67
#3  0x000000000045d3c0 in com.oracle.svm.core.JavaMemoryUtil::unsafeCopyMemory(java.lang.Object *, long, java.lang.Object *, long, long) () at com/oracle/svm/core/JavaMemoryUtil.java:276
#4  0x00000000013277de in jdk.internal.misc.Unsafe::copyMemory0 () at com/oracle/svm/core/jdk/SunMiscSubstitutions.java:125
#5  jdk.internal.misc.Unsafe::copyMemory(java.lang.Object *, long, java.lang.Object *, long, long) () at jdk/internal/misc/Unsafe.java:788
#6  0x00000000013b1a3f in jdk.internal.misc.Unsafe::copyMemory () at jdk/internal/misc/Unsafe.java:799
#7  sun.misc.Unsafe::copyMemory () at sun/misc/Unsafe.java:585
#8  org.acme.CrashResource::hello(void) () at org/acme/CrashResource.java:22

(gdb) thread apply all backtrace

Thread 22 (Thread 0x7fffc8dff640 (LWP 1028872) "tloop-thread-15"):
#0  0x00007ffff7c64c2e in epoll_wait (epfd=8, events=0x2ca3880, maxevents=1024, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x000000000166e01c in Java_sun_nio_ch_EPoll_wait ()
#2  0x00000000011bfece in sun.nio.ch.EPoll::wait(int, long, int, int) () at com/oracle/svm/core/stack/JavaFrameAnchors.java:42
#3  0x00000000011c08d2 in sun.nio.ch.EPollSelectorImpl::doSelect(java.util.function.Consumer *, long) () at sun/nio/ch/EPollSelectorImpl.java:120
#4  0x00000000011d8977 in sun.nio.ch.SelectorImpl::lockAndDoSelect(java.util.function.Consumer *, long) () at sun/nio/ch/SelectorImpl.java:124
#5  0x0000000000705720 in sun.nio.ch.SelectorImpl::select () at sun/nio/ch/SelectorImpl.java:141
#6  io.netty.channel.nio.SelectedSelectionKeySetSelector::select(void) () at io/netty/channel/nio/SelectedSelectionKeySetSelector.java:68
#7  0x0000000000703c2e in io.netty.channel.nio.NioEventLoop::select(long) () at io/netty/channel/nio/NioEventLoop.java:813
#8  0x0000000000701a5f in io.netty.channel.nio.NioEventLoop::run(void) () at io/netty/channel/nio/NioEventLoop.java:460
#9  0x00000000008496df in io.netty.util.concurrent.SingleThreadEventExecutor$4::run(void) () at io/netty/util/concurrent/SingleThreadEventExecutor.java:986
#10 0x0000000000860762 in io.netty.util.internal.ThreadExecutorMap$2::run(void) () at io/netty/util/internal/ThreadExecutorMap.java:74
#11 0x0000000000840da4 in io.netty.util.concurrent.FastThreadLocalRunnable::run(void) () at io/netty/util/concurrent/FastThreadLocalRunnable.java:30
#12 0x0000000000b7dd04 in java.lang.Thread::run(void) () at java/lang/Thread.java:829
#13 0x0000000000547dcc in com.oracle.svm.core.thread.JavaThreads::threadStartRoutine(org.graalvm.nativeimage.ObjectHandle *) () at com/oracle/svm/core/thread/JavaThreads.java:597
#14 0x00000000004e15b1 in com.oracle.svm.core.posix.thread.PosixJavaThreads::pthreadStartRoutine(com.oracle.svm.core.thread.JavaThreads$ThreadStartData *) () at com/oracle/svm/core/posix/thread/PosixJavaThreads.java:194
#15 0x0000000000480984 in com.oracle.svm.core.code.IsolateEnterStub::PosixJavaThreads_pthreadStartRoutine_e1f4a8c0039f8337338252cd8734f63a79b5e3df(com.oracle.svm.core.thread.JavaThreads$ThreadStartData *) () at com/oracle/svm/core/posix/thread/PosixJavaThreads.java:182
#16 0x00007ffff7be0b1a in start_thread (arg=<optimized out>) at pthread_create.c:443
#17 0x00007ffff7c65650 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 21 (Thread 0x7fffc97fa640 (LWP 1028871) "tloop-thread-14"):
#0  0x00007ffff7c64c2e in epoll_wait (epfd=53, events=0x2cd0970, maxevents=1024, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x000000000166e01c in Java_sun_nio_ch_EPoll_wait ()
#2  0x00000000011bfece in sun.nio.ch.EPoll::wait(int, long, int, int) () at com/oracle/svm/core/stack/JavaFrameAnchors.java:42
#3  0x00000000011c08d2 in sun.nio.ch.EPollSelectorImpl::doSelect(java.util.function.Consumer *, long) () at sun/nio/ch/EPollSelectorImpl.java:120
#4  0x00000000011d8977 in sun.nio.ch.SelectorImpl::lockAndDoSelect(java.util.function.Consumer *, long) () at sun/nio/ch/SelectorImpl.java:124
#5  0x0000000000705720 in sun.nio.ch.SelectorImpl::select () at sun/nio/ch/SelectorImpl.java:141
#6  io.netty.channel.nio.SelectedSelectionKeySetSelector::select(void) () at io/netty/channel/nio/SelectedSelectionKeySetSelector.java:68
#7  0x0000000000703c2e in io.netty.channel.nio.NioEventLoop::select(long) () at io/netty/channel/nio/NioEventLoop.java:813
#8  0x0000000000701a5f in io.netty.channel.nio.NioEventLoop::run(void) () at io/netty/channel/nio/NioEventLoop.java:460
#9  0x00000000008496df in io.netty.util.concurrent.SingleThreadEventExecutor$4::run(void) () at io/netty/util/concurrent/SingleThreadEventExecutor.java:986
#10 0x0000000000860762 in io.netty.util.internal.ThreadExecutorMap$2::run(void) () at io/netty/util/internal/ThreadExecutorMap.java:74
#11 0x0000000000840da4 in io.netty.util.concurrent.FastThreadLocalRunnable::run(void) () at io/netty/util/concurrent/FastThreadLocalRunnable.java:30
#12 0x0000000000b7dd04 in java.lang.Thread::run(void) () at java/lang/Thread.java:829
#13 0x0000000000547dcc in com.oracle.svm.core.thread.JavaThreads::threadStartRoutine(org.graalvm.nativeimage.ObjectHandle *) () at com/oracle/svm/core/thread/JavaThreads.java:597
#14 0x00000000004e15b1 in com.oracle.svm.core.posix.thread.PosixJavaThreads::pthreadStartRoutine(com.oracle.svm.core.thread.JavaThreads$ThreadStartData *) () at com/oracle/svm/core/posix/thread/PosixJavaThreads.java:194
#15 0x0000000000480984 in com.oracle.svm.core.code.IsolateEnterStub::PosixJavaThreads_pthreadStartRoutine_e1f4a8c0039f8337338252cd8734f63a79b5e3df(com.oracle.svm.core.thread.JavaThreads$ThreadStartData *) () at com/oracle/svm/core/posix/thread/PosixJavaThreads.java:182
#16 0x00007ffff7be0b1a in start_thread (arg=<optimized out>) at pthread_create.c:443
#17 0x00007ffff7c65650 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 20 (Thread 0x7fffc9ffb640 (LWP 1028870) "tloop-thread-13"):
...

(gdb) list
164    in com/oracle/svm/core/UnmanagedMemoryUtil.java

(gdb) directory target/debugging-native-1.0.0-SNAPSHOT-native-image-source-jar/sources
Source directories searched: /data/target/debugging-native-1.0.0-SNAPSHOT-native-image-source-jar/sources:$cdir:$cwd
(gdb) list
164        	UnsignedWord offset = size;
165        	while (offset.aboveOrEqual(32)) {
166            	offset = offset.subtract(32);
167            	Pointer src = from.add(offset);
168            	Pointer dst = to.add(offset);
169            	long l24 = src.readLong(24);
170            	long l16 = src.readLong(16);
171            	long l8 = src.readLong(8);
172            	long l0 = src.readLong(0);
173            	dst.writeLong(24, l24);

Warning: The option '-H:ReflectionConfigurationResources=META-INF/native-image/io.micrometer/micrometer-core/reflect-config.json' is experimental and must be enabled via '-H:+UnlockExperimentalVMOptions' in the future.

--link-at-build-time  require types to be fully defined at image build-time. If used
                      without args, all classes in scope of the option are required to
                      be fully defined.

$ strings target/debugging-native-1.0.0-SNAPSHOT-runner | \
  grep -e 'com.oracle.svm.core.VM=' -e 'com.oracle.svm.core.VM.Java.Version' -F
com.oracle.svm.core.VM.Java.Version=21.0.5
com.oracle.svm.core.VM=Mandrel-23.1.5.0-Final

# dnf (rpm-based)
sudo dnf install binutils gdb perf perl-open
# Debian-based distributions:
sudo apt install binutils gdb perf

./mvnw package -DskipTests -Dnative
    -Dquarkus.native.additional-build-args=-H:+PreserveFramePointer,-H:-DeleteLocalSymbols

perf record -F 1009 -g -a ./target/debugging-native-1.0.0-SNAPSHOT-runner

perf report --stdio -F+srcline
...
83.69%     0.00%  GreetingResource.java:20 ...
...
83.69%     0.00%  AbstractStringBuilder.java:1025 ...
...
83.69%     0.00%  ArraycopySnippets.java:95 ...

./mvnw package -DskipTests -Dnative \
    -Dquarkus.native.additional-build-args=--debug-attach=*:8000

$ ./mvnw package -DskipTests -Dnative \
    -Dquarkus.native.additional-build-args=--vm.agentlib:jdwp=transport=dt_socket\\,server=y\\,suspend=y\\,address=*:8000

./mvnw package -DskipTests -Dnative -Dquarkus.native.container-build=true \
    -Dquarkus.native.builder-image=quay.io/quarkus/ubi9-quarkus-mandrel-builder-image:jdk-21 \
    -Dquarkus.native.monitoring=jfr

./target/debugging-native-1.0.0-SNAPSHOT-runner \
    -XX:+FlightRecorder \
    -XX:StartFlightRecording="filename=recording.jfr"

Image generator watchdog detected no activity.

$ cat /proc/sys/kernel/random/entropy_avail

export JAVA_OPTS=-Djava.security.egd=/dev/urandom

The current machine does not support all of the following CPU features that are required by the image: [CX8, CMOV, FXSR, MMX, SSE, SSE2, SSE3, SSSE3, SSE4_1, SSE4_2, POPCNT, LZCNT, AVX, AVX2, BMI1, BMI2, FMA].
Please rebuild the executable with an appropriate setting of the -march option.

quarkus.native.march=compatibility