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8159145: Add JVMTI function GetNamedModule

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Introduce function GetNamedModule with a jtreg test coverage

Reviewed-by: alanb, ctornqvi, hseigel, jiangli, dholmes, dcubed
This commit is contained in:
Serguei Spitsyn 2016-07-09 19:20:38 -07:00
parent 5296c23c9b
commit 2cede6dbc1
7 changed files with 572 additions and 7 deletions
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22
hotspot/src/share/vm/classfile/modules.cpp
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@ -820,6 +820,28 @@ jobject Modules::get_module_by_package_name(jobject loader, jstring package, TRA
}
jobject Modules::get_named_module(Handle h_loader, const char* package_str, TRAPS) {
assert(ModuleEntryTable::javabase_defined(),
"Attempt to call get_named_module before java.base is defined");
assert(h_loader.is_null() || java_lang_ClassLoader::is_subclass(h_loader->klass()),
"Class loader is not a subclass of java.lang.ClassLoader");
assert(package_str != NULL, "the package_str should not be NULL");
if (strlen(package_str) == 0) {
return NULL;
}
TempNewSymbol package_sym = SymbolTable::new_symbol(package_str, CHECK_NULL);
const PackageEntry* const pkg_entry =
get_package_entry_by_name(package_sym, h_loader, THREAD);
const ModuleEntry* const module_entry = (pkg_entry != NULL ? pkg_entry->module() : NULL);
if (module_entry != NULL && module_entry->module() != NULL && module_entry->is_named()) {
return JNIHandles::make_local(THREAD, JNIHandles::resolve(module_entry->module()));
}
return NULL;
}
// This method is called by JFR and by the above method.
jobject Modules::get_module(Symbol* package_name, Handle h_loader, TRAPS) {
const PackageEntry* const pkg_entry =