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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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4
hotspot/src/share/vm/classfile/modules.cpp
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@ -113,7 +113,7 @@ static PackageEntry* get_package_entry(ModuleEntry* module_entry, jstring packag
const char *package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
if (package_name == NULL) return NULL;
TempNewSymbol pkg_symbol = SymbolTable::new_symbol(package_name, CHECK_NULL);
PackageEntryTable* package_entry_table = module_entry->loader()->packages();
PackageEntryTable* package_entry_table = module_entry->loader_data()->packages();
assert(package_entry_table != NULL, "Unexpected null package entry table");
return package_entry_table->lookup_only(pkg_symbol);
}
@ -868,7 +868,7 @@ void Modules::add_module_package(jobject module, jstring package, TRAPS) {
package_name, module_entry->name()->as_C_string());
TempNewSymbol pkg_symbol = SymbolTable::new_symbol(package_name, CHECK);
PackageEntryTable* package_table = module_entry->loader()->packages();
PackageEntryTable* package_table = module_entry->loader_data()->packages();
assert(package_table != NULL, "Missing package_table");
bool pkg_exists = false;