1 /*
   2  * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2018, 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 #include "memory/metaspace.hpp"
  28 #include "unittest.hpp"
  29 
  30 
  31 TEST_VM(MetaspaceUtils, reserved) {
  32   size_t reserved = MetaspaceUtils::reserved_bytes();
  33   EXPECT_GT(reserved, 0UL);
  34 
  35   size_t reserved_metadata = MetaspaceUtils::reserved_bytes(Metaspace::NonClassType);
  36   EXPECT_GT(reserved_metadata, 0UL);
  37   EXPECT_LE(reserved_metadata, reserved);
  38 }
  39 
  40 TEST_VM(MetaspaceUtils, reserved_compressed_class_pointers) {
  41   if (!UseCompressedClassPointers) {
  42     return;
  43   }
  44   size_t reserved = MetaspaceUtils::reserved_bytes();
  45   EXPECT_GT(reserved, 0UL);
  46 
  47   size_t reserved_class = MetaspaceUtils::reserved_bytes(Metaspace::ClassType);
  48   EXPECT_GT(reserved_class, 0UL);
  49   EXPECT_LE(reserved_class, reserved);
  50 }
  51 
  52 TEST_VM(MetaspaceUtils, committed) {
  53   size_t committed = MetaspaceUtils::committed_bytes();
  54   EXPECT_GT(committed, 0UL);
  55 
  56   size_t reserved  = MetaspaceUtils::reserved_bytes();
  57   EXPECT_LE(committed, reserved);
  58 
  59   size_t committed_metadata = MetaspaceUtils::committed_bytes(Metaspace::NonClassType);
  60   EXPECT_GT(committed_metadata, 0UL);
  61   EXPECT_LE(committed_metadata, committed);
  62 }
  63 
  64 TEST_VM(MetaspaceUtils, committed_compressed_class_pointers) {
  65   if (!UseCompressedClassPointers) {
  66     return;
  67   }
  68   size_t committed = MetaspaceUtils::committed_bytes();
  69   EXPECT_GT(committed, 0UL);
  70 
  71   size_t committed_class = MetaspaceUtils::committed_bytes(Metaspace::ClassType);
  72   EXPECT_GT(committed_class, 0UL);
  73   EXPECT_LE(committed_class, committed);
  74 }
  75