1 /* 2 * Copyright (c) 2018, 2019, 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 #include "memory/metaspace.hpp" 26 #include "memory/metaspace/virtualSpaceList.hpp" 27 #include "runtime/mutexLocker.hpp" 28 #include "runtime/os.hpp" 29 #include "unittest.hpp" 30 31 using namespace metaspace; 32 33 TEST_VM(MetaspaceUtils, reserved) { 34 size_t reserved = MetaspaceUtils::reserved_bytes(); 35 EXPECT_GT(reserved, 0UL); 36 37 size_t reserved_metadata = MetaspaceUtils::reserved_bytes(Metaspace::NonClassType); 38 EXPECT_GT(reserved_metadata, 0UL); 39 EXPECT_LE(reserved_metadata, reserved); 40 } 41 42 TEST_VM(MetaspaceUtils, reserved_compressed_class_pointers) { 43 if (!UseCompressedClassPointers) { 44 return; 45 } 46 size_t reserved = MetaspaceUtils::reserved_bytes(); 47 EXPECT_GT(reserved, 0UL); 48 49 size_t reserved_class = MetaspaceUtils::reserved_bytes(Metaspace::ClassType); 50 EXPECT_GT(reserved_class, 0UL); 51 EXPECT_LE(reserved_class, reserved); 52 } 53 54 TEST_VM(MetaspaceUtils, committed) { 55 size_t committed = MetaspaceUtils::committed_bytes(); 56 EXPECT_GT(committed, 0UL); 57 58 size_t reserved = MetaspaceUtils::reserved_bytes(); 59 EXPECT_LE(committed, reserved); 60 61 size_t committed_metadata = MetaspaceUtils::committed_bytes(Metaspace::NonClassType); 62 EXPECT_GT(committed_metadata, 0UL); 63 EXPECT_LE(committed_metadata, committed); 64 } 65 66 TEST_VM(MetaspaceUtils, committed_compressed_class_pointers) { 67 if (!UseCompressedClassPointers) { 68 return; 69 } 70 size_t committed = MetaspaceUtils::committed_bytes(); 71 EXPECT_GT(committed, 0UL); 72 73 size_t committed_class = MetaspaceUtils::committed_bytes(Metaspace::ClassType); 74 EXPECT_GT(committed_class, 0UL); 75 EXPECT_LE(committed_class, committed); 76 } 77 78 TEST_VM(MetaspaceUtils, virtual_space_list_large_chunk) { 79 VirtualSpaceList* vs_list = new VirtualSpaceList(os::vm_allocation_granularity()); 80 MutexLocker cl(MetaspaceExpand_lock, Mutex::_no_safepoint_check_flag); 81 // A size larger than VirtualSpaceSize (256k) and add one page to make it _not_ be 82 // vm_allocation_granularity aligned on Windows. 83 size_t large_size = (size_t)(2*256*K + (os::vm_page_size() / BytesPerWord)); 84 large_size += (os::vm_page_size() / BytesPerWord); 85 vs_list->get_new_chunk(large_size, 0); 86 }