--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/classfile/compactHashtable.inline.hpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2015, 2016, 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.
+ *
+ */
+
+#ifndef SHARE_VM_CLASSFILE_COMPACTHASHTABLE_INLINE_HPP
+#define SHARE_VM_CLASSFILE_COMPACTHASHTABLE_INLINE_HPP
+
+#include "classfile/compactHashtable.hpp"
+#include "memory/allocation.inline.hpp"
+#include "oops/oop.inline.hpp"
+
+template <class T, class N>
+inline Symbol* CompactHashtable<T, N>::decode_entry(CompactHashtable<Symbol*, char>* const t,
+ u4 offset, const char* name, int len) {
+ Symbol* sym = (Symbol*)(_base_address + offset);
+ if (sym->equals(name, len)) {
+ assert(sym->refcount() == -1, "must be shared");
+ return sym;
+ }
+
+ return NULL;
+}
+
+template <class T, class N>
+inline oop CompactHashtable<T, N>::decode_entry(CompactHashtable<oop, char>* const t,
+ u4 offset, const char* name, int len) {
+ narrowOop obj = (narrowOop)offset;
+ oop string = oopDesc::decode_heap_oop(obj);
+ if (java_lang_String::equals(string, (jchar*)name, len)) {
+ return string;
+ }
+
+ return NULL;
+}
+
+template <class T, class N>
+inline T CompactHashtable<T,N>::lookup(const N* name, unsigned int hash, int len) {
+ if (_entry_count > 0) {
+ int index = hash % _bucket_count;
+ u4 bucket_info = _buckets[index];
+ u4 bucket_offset = BUCKET_OFFSET(bucket_info);
+ int bucket_type = BUCKET_TYPE(bucket_info);
+ u4* entry = _entries + bucket_offset;
+
+ if (bucket_type == VALUE_ONLY_BUCKET_TYPE) {
+ T res = decode_entry(this, entry[0], name, len);
+ if (res != NULL) {
+ return res;
+ }
+ } else {
+ // This is a regular bucket, which has more than one
+ // entries. Each entry is a pair of entry (hash, offset).
+ // Seek until the end of the bucket.
+ u4* entry_max = _entries + BUCKET_OFFSET(_buckets[index + 1]);
+ while (entry < entry_max) {
+ unsigned int h = (unsigned int)(entry[0]);
+ if (h == hash) {
+ T res = decode_entry(this, entry[1], name, len);
+ if (res != NULL) {
+ return res;
+ }
+ }
+ entry += 2;
+ }
+ }
+ }
+ return NULL;
+}
+
+#endif // SHARE_VM_CLASSFILE_COMPACTHASHTABLE_INLINE_HPP