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8159262: Walking PackageEntry Export and ModuleEntry Reads Must Occur Only When Neccessary And Wait Until ClassLoader's Aliveness Determined

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Fixed an issue in class unloading to delay walk until class loader's aliveness is determined of modularity lists to remove dead modules

Reviewed-by: coleenp, dholmes, sspitsyn, zgu
This commit is contained in:
Lois Foltan 2016-06-28 10:11:01 -04:00
parent 651e15fda6
commit 92eb334c91
16 changed files with 807 additions and 46 deletions
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15
hotspot/src/share/vm/classfile/systemDictionary.cpp
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@ -175,9 +175,18 @@ bool SystemDictionary::is_parallelDefine(Handle class_loader) {
return false;
}
/**
* Returns true if the passed class loader is the platform class loader.
*/
// Returns true if the passed class loader is the builtin application class loader
// or a custom system class loader. A customer system class loader can be
// specified via -Djava.system.class.loader.
bool SystemDictionary::is_system_class_loader(Handle class_loader) {
if (class_loader.is_null()) {
return false;
}
return (class_loader->klass() == SystemDictionary::jdk_internal_loader_ClassLoaders_AppClassLoader_klass() ||
class_loader() == _java_system_loader);
}
// Returns true if the passed class loader is the platform class loader.
bool SystemDictionary::is_platform_class_loader(Handle class_loader) {
if (class_loader.is_null()) {
return false;