changeset 43460:591b3e506e67

8172261: [JVMTI] Specification for early VM start event needs to lower expectations in relation class loading Reviewed-by: dcubed, sspitsyn, alanb
author dholmes
date Wed, 18 Jan 2017 19:54:18 -0500
parents 80727d67b5e2
children 3a591205b9bc
files hotspot/src/share/vm/prims/jvmti.xml
diffstat 1 files changed, 7 insertions(+), 5 deletions(-) [+]
line wrap: on
line diff
--- a/hotspot/src/share/vm/prims/jvmti.xml	Wed Jan 18 14:36:54 2017 -0800
+++ b/hotspot/src/share/vm/prims/jvmti.xml	Wed Jan 18 19:54:18 2017 -0500
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="jvmti.xsl"?>
 <!--
- Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.
+ Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
  DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 
  This code is free software; you can redistribute it and/or modify it
@@ -12864,11 +12864,13 @@
       If the capability has been added then the VM posts the event as early
       as possible. 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
-      <code>java.base</code>. Agents that do load-time instrumentation in this
+      <code>java.base</code>, or even arbitrary classes in <code>java.base</code>.
+      Agents that do load-time instrumentation in this
       phase must take great care when instrumenting code that potentially
-      executes in this phase. Care should also be taken with JNI
-      <code>FindClass</code> as it may not be possible to load classes that are
-      not in the <code>java.base</code> module.
+      executes in this phase. Extreme care should also be taken with JNI
+      <code>FindClass</code> 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.
       If the capability has not been added then the VM delays posting this
       event until it is capable of loading classes in modules other than
       <code>java.base</code> or the VM has completed its initialization.