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/*
* Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2020 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "memory/metaspace.hpp"
#include "memory/metaspaceUtils.hpp"
#include "unittest.hpp"
TEST_VM(metaspace, MetaspaceUtils_reserved) {
size_t reserved = MetaspaceUtils::reserved_bytes();
EXPECT_GT(reserved, 0UL);
size_t reserved_metadata = MetaspaceUtils::reserved_bytes(Metaspace::NonClassType);
EXPECT_GT(reserved_metadata, 0UL);
EXPECT_LE(reserved_metadata, reserved);
}
TEST_VM(metaspace, MetaspaceUtils_reserved_compressed_class_pointers) {
if (!UseCompressedClassPointers) {
return;
}
size_t reserved = MetaspaceUtils::reserved_bytes();
EXPECT_GT(reserved, 0UL);
size_t reserved_class = MetaspaceUtils::reserved_bytes(Metaspace::ClassType);
EXPECT_GT(reserved_class, 0UL);
EXPECT_LE(reserved_class, reserved);
}
TEST_VM(metaspace, MetaspaceUtils_committed) {
size_t committed = MetaspaceUtils::committed_bytes();
EXPECT_GT(committed, 0UL);
size_t reserved = MetaspaceUtils::reserved_bytes();
EXPECT_LE(committed, reserved);
size_t committed_metadata = MetaspaceUtils::committed_bytes(Metaspace::NonClassType);
EXPECT_GT(committed_metadata, 0UL);
EXPECT_LE(committed_metadata, committed);
}
TEST_VM(metaspace, MetaspaceUtils_committed_compressed_class_pointers) {
if (!UseCompressedClassPointers) {
return;
}
size_t committed = MetaspaceUtils::committed_bytes();
EXPECT_GT(committed, 0UL);
size_t committed_class = MetaspaceUtils::committed_bytes(Metaspace::ClassType);
EXPECT_GT(committed_class, 0UL);
EXPECT_LE(committed_class, committed);
}
TEST_VM(metaspace, MetaspaceUtils_non_compressed_class_pointers) {
if (UseCompressedClassPointers) {
return;
}
size_t committed_class = MetaspaceUtils::committed_bytes(Metaspace::ClassType);
EXPECT_EQ(committed_class, 0UL);
size_t used_class = MetaspaceUtils::used_bytes(Metaspace::ClassType);
EXPECT_EQ(used_class, 0UL);
size_t reserved_class = MetaspaceUtils::reserved_bytes(Metaspace::ClassType);
EXPECT_EQ(reserved_class, 0UL);
}
static void check_metaspace_stats_are_consistent(const MetaspaceStats& stats) {
EXPECT_LE(stats.committed(), stats.reserved());
EXPECT_LE(stats.used(), stats.committed());
}
static void check_metaspace_stats_are_not_null(const MetaspaceStats& stats) {
EXPECT_GT(stats.reserved(), 0UL);
EXPECT_GT(stats.committed(), 0UL);
EXPECT_GT(stats.used(), 0UL);
}
TEST_VM(MetaspaceUtils, MetaspaceUtils_get_statistics) {
MetaspaceCombinedStats combined_stats = MetaspaceUtils::get_combined_statistics();
check_metaspace_stats_are_not_null(combined_stats);
check_metaspace_stats_are_consistent(combined_stats);
check_metaspace_stats_are_not_null(combined_stats.non_class_space_stats());
check_metaspace_stats_are_consistent(combined_stats.non_class_space_stats());
if (UseCompressedClassPointers) {
check_metaspace_stats_are_not_null(combined_stats.class_space_stats());
check_metaspace_stats_are_consistent(combined_stats.class_space_stats());
} else {
// if we don't have a class space, combined stats should equal non-class stats
EXPECT_EQ(combined_stats.non_class_space_stats().reserved(), combined_stats.reserved());
EXPECT_EQ(combined_stats.non_class_space_stats().committed(), combined_stats.committed());
EXPECT_EQ(combined_stats.non_class_space_stats().used(), combined_stats.used());
}
}
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