enable-monitoring option not working on windows : native image not found by visualvm

[cnico]

enable-monitoring option not working on windows : native image not found by visualvm

[selhagani]

Hi @cnico,

Thank you for sharing this with us.
I tested on my end and I confirm the issue you're facing.
We will take a look into this and I'll keep you updated

[selhagani]

Hi @cnico,

Could you please try to test while using this option -H:ThrowMissingRegistrationErrors= to your native image build command and share your findings with me?

Here's an Example Command:

native-image -H:ThrowMissingRegistrationErrors= -jar your-app.jar

[cnico]

Hi @selhagani,
I have added this option to the build and I see it is correctly taken into account by the maven build logs.
The native executable is correctly generated without error.
When I start the exe, it works without error or warning on the console and I still can not attach the process in visualvm.
I added it to the github project that helps reproducing the problem in case you want to have a look at it : https://github.com/cnico/native-image-maven-demo

[selhagani]

Could you please share with me the logs now that you added that option for the newly built native image? thank you!

[cnico]

The logs at build time are :

...
========================================================================================================================
GraalVM Native Image: Generating 'demo-native-image-maven' (executable)...
========================================================================================================================
For detailed information and explanations on the build output, visit:
https://github.com/oracle/graal/blob/master/docs/reference-manual/native-image/BuildOutput.md
------------------------------------------------------------------------------------------------------------------------
[1/8] Initializing...                                                                                   (40,4s @ 0,18GB)
 Java version: 22.0.2+9, vendor version: GraalVM CE 22.0.2+9.1
 Graal compiler: optimization level: 2, target machine: x86-64-v3
 C compiler: cl.exe (microsoft, x64, 19.38.33135)
 Garbage collector: Serial GC (max heap size: 80% of RAM)
 1 user-specific feature(s):
 - com.oracle.svm.thirdparty.gson.GsonFeature
------------------------------------------------------------------------------------------------------------------------
 1 experimental option(s) unlocked:
 - '-H:ThrowMissingRegistrationErrors': This can happen on reflection and serialization queries, and resource access. (origin(s): command line)
------------------------------------------------------------------------------------------------------------------------
Build resources:
 - 20,88GB of memory (52,6% of 39,68GB system memory, determined at start)
 - 12 thread(s) (100,0% of 12 available processor(s), determined at start)
# Printing compilation-target information to: D:\platform_java21\workspace\native-image-maven-demo\target\reports\target_info_20240828_135049.txt
# Printing native-library information to: D:\platform_java21\workspace\native-image-maven-demo\target\reports\native_library_info_20240828_135057.txt
[2/8] Performing analysis...  [*****]                                                                    (8,0s @ 0,28GB)
    3?177 reachable types   (72,2% of    4?400 total)
    3?686 reachable fields  (42,8% of    8?615 total)
   14?815 reachable methods (44,2% of   33?534 total)
    1?058 types,    53 fields, and   545 methods registered for reflection
       61 types,    51 fields, and    52 methods registered for JNI access
        1 native library: version
[3/8] Building universe...                                                                               (1,4s @ 0,29GB)
[4/8] Parsing methods...      [*]                                                                        (0,8s @ 0,31GB)
[5/8] Inlining methods...     [***]                                                                      (0,7s @ 0,33GB)
[6/8] Compiling methods...    [***]                                                                      (8,2s @ 0,30GB)
[7/8] Laying out methods...   [*]                                                                        (1,0s @ 0,35GB)
[8/8] Creating image...       [*]                                                                        (1,3s @ 0,43GB)
   5,13MB (40,41%) for code area:     8?401 compilation units
   7,41MB (58,30%) for image heap:   90?255 objects and 75 resources
 167,95kB ( 1,29%) for other data
  12,70MB in total
------------------------------------------------------------------------------------------------------------------------
Top 10 origins of code area:                                Top 10 object types in image heap:
   3,77MB java.base                                            1,52MB byte[] for code metadata
 983,86kB svm.jar (Native Image)                               1,21MB byte[] for java.lang.String
 114,75kB java.logging                                       910,38kB java.lang.String
  65,55kB org.graalvm.nativeimage.base                       753,29kB java.lang.Class
  45,84kB jdk.proxy3                                         383,88kB heap alignment
  44,42kB jdk.proxy1                                         347,78kB byte[] for general heap data
  27,00kB jdk.internal.vm.ci                                 273,02kB com.oracle.svm.core.hub.DynamicHubCompanion
  22,68kB org.graalvm.collections                            244,31kB java.util.HashMap$Node
  11,42kB jdk.proxy2                                         196,05kB java.lang.Object[]
   8,18kB jdk.graal.compiler                                 180,16kB java.lang.String[]
   4,68kB for 3 more packages                                  1,47MB for 883 more object types
------------------------------------------------------------------------------------------------------------------------
Recommendations:
 HEAP: Set max heap for improved and more predictable memory usage.
 CPU:  Enable more CPU features with '-march=native' for improved performance.
------------------------------------------------------------------------------------------------------------------------
                        1,3s (2,0% of total time) in 176 GCs | Peak RSS: 0,82GB | CPU load: 3,40
------------------------------------------------------------------------------------------------------------------------
Build artifacts:
 D:\platform_java21\workspace\native-image-maven-demo\target\demo-native-image-maven.exe (executable)
========================================================================================================================
Finished generating 'demo-native-image-maven' in 1m 2s.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------

And there is no log à runtime for the exe : I have just the System.out.print of my Java main :

D:\platform_java21\workspace\native-image-maven-demo>target\demo-native-image-maven.exe
Starting to compute prime numbers :)
2
3
5
7
11
13
17
19
23
29
31
37
41
43
47
...

and so on to the end of the program.