1 /* 2 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2020 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #include "precompiled.hpp" 27 28 #include "memory/metaspace/msArena.hpp" 29 #include "memory/metaspace/msTestHelpers.hpp" 30 #include "memory/metaspace/msSettings.hpp" 31 32 //#define LOG_PLEASE 33 #include "metaspaceGtestCommon.hpp" 34 #include "metaspaceGtestContexts.hpp" 35 36 #ifdef ASSERT 37 38 using metaspace::MetaspaceArena; 39 using metaspace::MetaspaceTestArena; 40 using metaspace::Settings; 41 42 43 // Test that overwriting memory triggers an assert if allocation guards are enabled. 44 // Note: We use TEST_VM_ASSERT_MSG. However, an assert is only triggered if allocation 45 // guards are enabled; if guards are disabled for the gtests, this test would fail. 46 // So for that case, we trigger a fake assert. 47 TEST_VM_ASSERT_MSG(metaspace, test_overwriter, "Corrupt block") { 48 49 if (Settings::use_allocation_guard()) { 50 MetaspaceGtestContext context; 51 MetaspaceTestArena* arena = context.create_arena(Metaspace::StandardMetaspaceType); 52 MetaWord* p = arena->allocate(10); 53 MetaWord* p2 = arena->allocate(10); 54 p[10] = (MetaWord)0x9345; // Overwriter 55 // Checks should run in destructor: 56 delete arena; 57 } else { 58 assert(false, "Corrupt block fake message to satisfy tests"); 59 } 60 61 } 62 63 #endif // ASSERT