The HotSpot
Whitebox-Testing API

Volker Simonis, SAP / volker.simonis@gmail.com

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Building the WhiteBox API (JDK8)

            


ls -la wb.jar
-rw-r--r-- sim 8178 Jan 10 12:12 wb.jar
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Building the WhiteBox API (JDK9)

            
/configure
make build-test-lib

ls -la support/test/lib/wb.jar
-rw-r--r-- sim 52611 Jan 14 17:42 support/test/lib/wb.jar
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Using the WhiteBox API - standalone

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Using the WhiteBox API - JTREG

The WhiteBox API - Implementation

• Implemented in:
  hotspot/src/share/vm/prims/whitebox.cpp.
• WhiteBox.registerNatives() handled implicitly by:
  

                  
   NativeLookup::lookup_style()
      -> lookup_special_native()
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  and bound to JVM_RegisterWhiteBoxMethods().
• WhiteBox::register_methods() binds the native methods:
  

OpenJDK Wiki

https://wiki.openjdk.java.net/display/HotSpot/The+WhiteBox+testing+API