Add get_class_loader_class_descriptors JVMTI extension method
This adds a new JVMTI extension:
com.android.art.class.get_class_loader_class_descriptors. This will
enumerate all of the classes known to be loadable with a given
class-loader as the defining class loader. The function gets this by
looking at all dex-files associated with the given class-loader.
Bug: 73504235
Test: ./test.py --host -j50
Change-Id: Ie54223cd40109056396ba609f92b6c02d81dd4ab
diff --git a/openjdkjvmti/ti_class_loader-inl.h b/openjdkjvmti/ti_class_loader-inl.h
new file mode 100644
index 0000000..95278f4
--- /dev/null
+++ b/openjdkjvmti/ti_class_loader-inl.h
@@ -0,0 +1,76 @@
+/* Copyright (C) 2017 The Android Open Source Project
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This file implements interfaces from the file jvmti.h. This implementation
+ * is licensed under the same terms as the file jvmti.h. The
+ * copyright and license information for the file jvmti.h follows.
+ *
+ * Copyright (c) 2003, 2011, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef ART_OPENJDKJVMTI_TI_CLASS_LOADER_INL_H_
+#define ART_OPENJDKJVMTI_TI_CLASS_LOADER_INL_H_
+
+#include "ti_class_loader.h"
+#include "art_field-inl.h"
+#include "handle.h"
+#include "handle_scope.h"
+#include "jni_internal.h"
+#include "mirror/object.h"
+#include "mirror/object_array-inl.h"
+#include "well_known_classes.h"
+
+namespace openjdkjvmti {
+
+template<typename Visitor>
+inline void ClassLoaderHelper::VisitDexFileObjects(art::Thread* self,
+ art::Handle<art::mirror::ClassLoader> loader,
+ const Visitor& visitor) {
+ art::StackHandleScope<1> hs(self);
+ art::ArtField* element_dex_file_field = art::jni::DecodeArtField(
+ art::WellKnownClasses::dalvik_system_DexPathList__Element_dexFile);
+
+ art::Handle<art::mirror::ObjectArray<art::mirror::Object>> dex_elements_list(
+ hs.NewHandle(GetDexElementList(self, loader)));
+ if (dex_elements_list == nullptr) {
+ return;
+ }
+
+ size_t num_elements = dex_elements_list->GetLength();
+ // Iterate over the DexPathList$Element to find the right one
+ for (size_t i = 0; i < num_elements; i++) {
+ art::ObjPtr<art::mirror::Object> current_element = dex_elements_list->Get(i);
+ CHECK(!current_element.IsNull());
+ art::ObjPtr<art::mirror::Object> dex_file(element_dex_file_field->GetObject(current_element));
+ if (!dex_file.IsNull()) {
+ if (!visitor(dex_file)) {
+ return;
+ }
+ }
+ }
+}
+
+} // namespace openjdkjvmti
+
+#endif // ART_OPENJDKJVMTI_TI_CLASS_LOADER_INL_H_