Using AOTCaching with debug (JDWP)

[Anthony Dahanne]

Hello all!
I'm trying to run an AOTCaching optimized app in debug mode; unfortunately,
it does not seem to be supported.

Using a JDK 25.0.1, during the training run I have:

```
 [creator]     Temporary AOTConfiguration recorded: application.aot.config
    [creator]     Launching child process
/layers/paketo-buildpacks_bellsoft-liberica/jre/bin/java to assemble AOT
cache application.aot using configuration application.aot.config
    [creator]     Picked up JAVA_TOOL_OPTIONS:
-Djava.class.path=runner.jar:lib/spring-cloud-bindings-2.0.4.jar
-agentlib:jdwp=transport=dt_socket,server=y,address=*:8000,suspend=n
-XX:+AOTClassLinking -Dspring.context.exit=onRefresh
-XX:AOTCacheOutput=application.aot
-XX:AOTConfiguration=application.aot.config -XX:AOTMode=create
    [creator]     Reading AOTConfiguration application.aot.config and
writing AOTCache application.aot
    [creator]     [0.262s][warning][aot] Skipping
io/micrometer/core/instrument/config/InvalidConfigurationException:
Unlinked class not supported by AOTClassLinking
    [creator]     [0.262s][warning][aot] Skipping
org/springframework/web/servlet/view/freemarker/FreeMarkerView: Unlinked
class not supported by AOTClassLinking
    [creator]     [0.262s][warning][aot] Skipping
org/springframework/boot/logging/log4j2/Log4J2LoggingSystem: Unlinked class
not supported by AOTClassLinking
    [creator]     [0.263s][warning][aot] Skipping
org/springframework/core/ReactiveAdapterRegistry$ReactorAdapter: Unlinked
class not supported by AOTClassLinking
    [creator]     AOTCache creation is complete: application.aot 56819712
bytes
    [creator]     Removed temporary AOT configuration file
application.aot.config
```

but at runtime, I have:
```
Picked up JAVA_TOOL_OPTIONS:
-Djava.security.properties=/layers/paketo-buildpacks_bellsoft-liberica/java-security-properties/java-security.properties
-XX:+ExitOnOutOfMemoryError
-agentlib:jdwp=transport=dt_socket,server=y,address=*:8000,suspend=n
-XX:MaxDirectMemorySize=10M -Xmx14945375K -XX:MaxMetaspaceSize=78944K
-XX:ReservedCodeCacheSize=240M -Xss1M -XX:+UnlockDiagnosticVMOptions
-XX:NativeMemoryTracking=summary -XX:+PrintNMTStatistics
-XX:AOTCache=application.aot
-Dorg.springframework.cloud.bindings.boot.enable=true
[0.032s][error][aot] AOT cache has aot-linked classes. It cannot be used
with JDWP agent
[0.034s][error][aot] An error has occurred while processing the AOT cache.
Run with -Xlog:aot for details.
[0.034s][error][aot] Unable to map shared spaces
Listening for transport dt_socket at address: 8000
```

If I enable `-Xlog:aot` at runtime, I have:

```
Picked up JAVA_TOOL_OPTIONS: -Xlog:aot
-Djava.security.properties=/layers/paketo-buildpacks_bellsoft-liberica/java-security-properties/java-security.properties
-XX:+ExitOnOutOfMemoryError
-agentlib:jdwp=transport=dt_socket,server=y,address=*:8000,suspend=n
-XX:MaxDirectMemorySize=10M -Xmx15196043K -XX:MaxMetaspaceSize=78944K
-XX:ReservedCodeCacheSize=240M -Xss1M -XX:+UnlockDiagnosticVMOptions
-XX:NativeMemoryTracking=summary -XX:+PrintNMTStatistics
-XX:AOTCache=application.aot
-Dorg.springframework.cloud.bindings.boot.enable=true
[0.033s][info][aot] trying to map application.aot
[0.033s][info][aot] Opened AOT cache application.aot.
[0.033s][info][aot] The AOT cache was created with UseCompressedOops = 1,
UseCompressedClassPointers = 1, UseCompactObjectHeaders = 0
[0.033s][info][aot] Core region alignment: 65536
[0.033s][info][aot] ArchiveRelocationMode: 1
[0.033s][info][aot] ArchiveRelocationMode == 1: always map archive(s) at an
alternative address
[0.033s][info][aot] Try to map archive(s) at an alternative address
[0.033s][info][aot] Reserved archive_space_rs [0x0000003000000000 -
0x0000003004000000] (67108864) bytes (includes protection zone)
[0.033s][info][aot] Reserved class_space_rs   [0x0000003004000000 -
0x0000003008000000] (67108864) bytes
[0.033s][info][aot] Mapped static  region #0 at base 0x0000003000010000 top
0x0000003001500000 (ReadWrite)
[0.033s][info][aot] Mapped static  region #1 at base 0x0000003001500000 top
0x0000003003200000 (ReadOnly)
[0.033s][info][aot] Mapped static  region #2 at base 0x0000ffff5c120000 top
0x0000ffff5c1e0000 (Bitmap)
[0.069s][info][aot] archived module property jdk.module.main: (null)
[0.069s][info][aot] archived module property jdk.module.addexports: (null)
[0.069s][info][aot] archived module property jdk.module.addmods: (null)
[0.069s][info][aot] archived module property
jdk.module.enable.native.access: (null)
[0.069s][info][aot] archived module property jdk.module.addopens: (null)
[0.069s][info][aot] archived module property jdk.module.addreads: (null)
[0.069s][info][aot] optimized module handling: enabled
[0.069s][info][aot] full module graph: enabled
[0.069s][error][aot] AOT cache has aot-linked classes. It cannot be used
with JDWP agent
[0.069s][info ][aot] Unmapping region #0 at base 0x0000003000010000
(ReadWrite)
[0.069s][info ][aot] Region #0 (ReadWrite) is in a reserved space, it will
be freed when the space is released
[0.069s][info ][aot] Unmapping region #1 at base 0x0000003001500000
(ReadOnly)
[0.069s][info ][aot] Region #1 (ReadOnly) is in a reserved space, it will
be freed when the space is released
[0.069s][info ][aot] Unmapping region #2 at base 0x0000ffff5c120000 (Bitmap)
[0.069s][error][aot] An error has occurred while processing the AOT cache.
Run with -Xlog:aot for details.
[0.069s][error][aot] Unable to map shared spaces
Listening for transport dt_socket at address: 8000
```

I have tried several variations using ` -XX:+AOTClassLinking` during the
training run, but that did not change a thing.

Is it possible to use AOTCaching when debug is enabled?

Thank you!
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