--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/classfile/klassFactory.cpp Tue Dec 08 20:04:03 2015 +0100
@@ -0,0 +1,140 @@
+/*
+* Copyright (c) 2015, 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.
+*
+* 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.
+*
+*/
+
+#include "precompiled.hpp"
+#include "classfile/classFileParser.hpp"
+#include "classfile/classFileStream.hpp"
+#include "classfile/classLoaderData.hpp"
+#include "classfile/klassFactory.hpp"
+#include "memory/resourceArea.hpp"
+#include "prims/jvmtiEnvBase.hpp"
+
+static ClassFileStream* prologue(ClassFileStream* stream,
+ Symbol* name,
+ ClassLoaderData* loader_data,
+ Handle protection_domain,
+ JvmtiCachedClassFileData** cached_class_file,
+ TRAPS) {
+
+ assert(stream != NULL, "invariant");
+
+ if (JvmtiExport::should_post_class_file_load_hook()) {
+ assert(THREAD->is_Java_thread(), "must be a JavaThread");
+ const JavaThread* jt = (JavaThread*)THREAD;
+
+ Handle class_loader(THREAD, loader_data->class_loader());
+
+ // Get the cached class file bytes (if any) from the class that
+ // is being redefined or retransformed. We use jvmti_thread_state()
+ // instead of JvmtiThreadState::state_for(jt) so we don't allocate
+ // a JvmtiThreadState any earlier than necessary. This will help
+ // avoid the bug described by 7126851.
+
+ JvmtiThreadState* state = jt->jvmti_thread_state();
+
+ if (state != NULL) {
+ KlassHandle* h_class_being_redefined =
+ state->get_class_being_redefined();
+
+ if (h_class_being_redefined != NULL) {
+ instanceKlassHandle ikh_class_being_redefined =
+ instanceKlassHandle(THREAD, (*h_class_being_redefined)());
+
+ *cached_class_file = ikh_class_being_redefined->get_cached_class_file();
+ }
+ }
+
+ unsigned char* ptr = const_cast<unsigned char*>(stream->buffer());
+ unsigned char* end_ptr = ptr + stream->length();
+
+ JvmtiExport::post_class_file_load_hook(name,
+ class_loader,
+ protection_domain,
+ &ptr,
+ &end_ptr,
+ cached_class_file);
+
+ if (ptr != stream->buffer()) {
+ // JVMTI agent has modified class file data.
+ // Set new class file stream using JVMTI agent modified class file data.
+ stream = new ClassFileStream(ptr,
+ end_ptr - ptr,
+ stream->source(),
+ stream->need_verify());
+ }
+ }
+
+ return stream;
+}
+
+
+instanceKlassHandle KlassFactory::create_from_stream(ClassFileStream* stream,
+ Symbol* name,
+ ClassLoaderData* loader_data,
+ Handle protection_domain,
+ const Klass* host_klass,
+ GrowableArray<Handle>* cp_patches,
+ TempNewSymbol* parsed_name,
+ TRAPS) {
+
+ assert(stream != NULL, "invariant");
+ assert(loader_data != NULL, "invariant");
+ assert(THREAD->is_Java_thread(), "must be a JavaThread");
+
+ ResourceMark rm;
+ HandleMark hm;
+
+ JvmtiCachedClassFileData* cached_class_file = NULL;
+
+ stream = prologue(stream,
+ name,
+ loader_data,
+ protection_domain,
+ &cached_class_file,
+ CHECK_NULL);
+
+ ClassFileParser parser(stream,
+ name,
+ loader_data,
+ protection_domain,
+ parsed_name,
+ host_klass,
+ cp_patches,
+ ClassFileParser::BROADCAST, // publicity level
+ CHECK_NULL);
+
+ instanceKlassHandle result = parser.create_instance_klass(CHECK_NULL);
+ assert(result == parser.create_instance_klass(THREAD), "invariant");
+
+ if (result.is_null()) {
+ return NULL;
+ }
+
+ if (cached_class_file != NULL) {
+ // JVMTI: we have an InstanceKlass now, tell it about the cached bytes
+ result->set_cached_class_file(cached_class_file);
+ }
+
+ return result;
+}