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60 lines
2.4 KiB
C++
60 lines
2.4 KiB
C++
/*
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* Copyright (c) 2025, 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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#include "classfile/vmClasses.hpp"
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#include "memory/resourceArea.hpp"
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#include "oops/instanceKlass.hpp"
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#include "oops/jmethodIDTable.hpp"
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#include "oops/method.hpp"
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#include "unittest.hpp"
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#include "utilities/growableArray.hpp"
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// Tests for creating and deleting jmethodIDs
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TEST_VM(jmethodIDTable, test_jmethod_ids) {
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InstanceKlass* klass = vmClasses::ClassLoader_klass();
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Array<Method*>* methods = klass->methods();
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int length = methods->length();
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// How many entries are in the jmethodID table?
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uint64_t initial_entries = JmethodIDTable::get_entry_count();
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ResourceMark rm;
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GrowableArray<uint64_t> ints(10);
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for (int i = 0; i < length; i++) {
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Method* m = methods->at(i);
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jmethodID mid = m->jmethod_id();
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ints.push((uint64_t)mid);
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}
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uint64_t entries_now = JmethodIDTable::get_entry_count();
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ASSERT_TRUE(entries_now == initial_entries + length) << "should have more entries " << entries_now << " " << initial_entries + length;
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// Test that new entries aren't created, and the values are the same.
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for (int i = 0; i < length; i++) {
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Method* m = methods->at(i);
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jmethodID mid = m->jmethod_id();
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ASSERT_TRUE(ints.at(i) == (uint64_t)mid) << "should be the same";
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}
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// should have the same number of entries
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entries_now = JmethodIDTable::get_entry_count();
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ASSERT_TRUE(entries_now == initial_entries + length) << "should have more entries " << entries_now << " " << initial_entries + length;
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}
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