1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include "precompiled.hpp" 25 26 #include "classfile/classLoaderData.hpp" 27 #include "memory/iterator.hpp" 28 #include "memory/metaspace.hpp" 29 #include "runtime/interfaceSupport.hpp" 30 #include "runtime/vm_operations.hpp" 31 #include "runtime/vmThread.hpp" 32 #include "unittest.hpp" 33 34 // The test function is only available in debug builds 35 #ifdef ASSERT 36 37 void Metaspace_test_anonymous_delegating_classloader_sizing(ClassLoaderMetaspace* msp); 38 39 class VerifyMetaspaceSizingClosure : public CLDClosure { 40 public: 41 VerifyMetaspaceSizingClosure() { } 42 void do_cld(ClassLoaderData* cld) { 43 assert(SafepointSynchronize::is_at_safepoint(), "Must be at a safepoint"); 44 ClassLoaderMetaspace* msp = cld->metaspace_or_null(); 45 // defined in metaspace.cpp 46 if (msp != NULL) { 47 Metaspace_test_anonymous_delegating_classloader_sizing(msp); 48 } 49 } 50 }; 51 52 class VM_WalkCLDAtSafepoint : public VM_GTestExecuteAtSafepoint { 53 public: 54 VM_WalkCLDAtSafepoint() { } 55 void doit() { 56 VerifyMetaspaceSizingClosure cl; 57 ClassLoaderDataGraph::cld_do(&cl); 58 } 59 }; 60 61 62 class MetaspaceSizingTest { 63 public: 64 static void test_anon_delegating_classloader_metadata_sizing() { 65 ThreadInVMfromNative invm(JavaThread::current()); 66 VM_WalkCLDAtSafepoint op; 67 VMThread::execute(&op); 68 } 69 }; 70 71 TEST_VM(Metaspace, anon_and_delegating_classloader_sizing) { 72 MetaspaceSizingTest::test_anon_delegating_classloader_metadata_sizing(); 73 } 74 75 #endif // ASSERT