95 lines
3.3 KiB
C++
95 lines
3.3 KiB
C++
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/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "gc/shared/oopStorage.hpp"
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#include "gc/shared/oopStorageSet.hpp"
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#include "runtime/mutex.hpp"
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#include "runtime/os.hpp"
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#include "utilities/debug.hpp"
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#include "utilities/globalDefinitions.hpp"
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#include "utilities/macros.hpp"
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// +1 for NULL singular entry.
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OopStorage* OopStorageSet::storages[all_count + 1] = {};
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static Mutex* make_oopstorage_mutex(const char* storage_name,
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const char* kind,
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int rank) {
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char name[256];
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os::snprintf(name, sizeof(name), "%s %s lock", storage_name, kind);
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return new PaddedMutex(rank, name, true, Mutex::_safepoint_check_never);
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}
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static OopStorage* make_oopstorage(const char* name) {
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Mutex* alloc = make_oopstorage_mutex(name, "alloc", Mutex::oopstorage);
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Mutex* active = make_oopstorage_mutex(name, "active", Mutex::oopstorage - 1);
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return new OopStorage(name, alloc, active);
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}
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void OopStorageSet::initialize() {
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storages[jni_global_index] = make_oopstorage("JNI global");
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storages[vm_global_index] = make_oopstorage("VM global");
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storages[jni_weak_index] = make_oopstorage("JNI weak");
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storages[vm_weak_index] = make_oopstorage("VM weak");
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storages[string_table_weak_index] = make_oopstorage("StringTable weak");
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storages[resolved_method_table_weak_index] =
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make_oopstorage("ResolvedMethodTable weak");
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// Ensure we have all of them.
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STATIC_ASSERT(all_count == 6);
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assert(storages[singular_index] == NULL, "postcondition");
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#ifdef ASSERT
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for (uint i = all_start; i < all_end; ++i) {
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assert(storages[i] != NULL, "postcondition");
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}
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#endif // ASSERT
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}
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void oopstorage_init() {
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OopStorageSet::initialize();
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}
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#ifdef ASSERT
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void OopStorageSet::verify_initialized(uint index) {
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assert(storages[index] != NULL, "oopstorage_init not yet called");
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}
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void OopStorageSet::Iterator::verify_nonsingular() const {
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assert(_category != singular, "precondition");
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}
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void OopStorageSet::Iterator::verify_category_match(const Iterator& other) const {
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verify_nonsingular();
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assert(_category == other._category, "precondition");
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}
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void OopStorageSet::Iterator::verify_dereferenceable() const {
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verify_nonsingular();
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assert(!is_end(), "precondition");
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}
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#endif // ASSERT
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