RFR (XS): 8172261: [JVMTI] Specification for early VM start event needs to lower expectations in relation class loading

[David Holmes]

Bug: https://bugs.openjdk.java.net/browse/JDK-8172261

webrev: http://cr.openjdk.java.net/~dholmes/8172261/webrev/

This is a simple relaxation of the spec in regards to the new "early VM 
start" event, to explicitly allow for the possibility that arbitrary 
class loading during this "early VM start" time may fail in extreme ways.

Changes are easier to see in text than webrev:

Extend:

The VM is capable of executing bytecode but it may not have initialized 
to the point where it can load classes in modules other than java.base.

to read:

The VM is capable of executing bytecode but it may not have initialized 
to the point where it can load classes in modules other than java.base, 
or even arbitrary classes in java.base.

---

Replace:

Care should also be taken with JNI FindClass as it may not be possible 
to load classes that are not in the java.base module.

with:

Extreme care should also be taken with JNI FindClass as it may not be 
possible to load classes, and attempts to do so may result in 
unpredictable behavior, maybe even stability issues on some VM 
implementations.

---

Thanks,
David