view test/hotspot/gtest/gc/z/test_zVirtualMemory.cpp @ 54834:39ba09047e19

8222480: Implementation: JEP 351: ZGC: Uncommit Unused Memory Reviewed-by: stefank, eosterlund
author pliden
date Tue, 14 May 2019 09:55:02 +0200
parents b833992fa8fa
children
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/*
 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. 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 "precompiled.hpp"
#include "gc/z/zVirtualMemory.inline.hpp"
#include "unittest.hpp"

TEST(ZVirtualMemory, split) {
  ZVirtualMemory vmem(0, 10);

  ZVirtualMemory vmem0 = vmem.split(0);
  EXPECT_EQ(vmem0.size(), 0u);
  EXPECT_EQ(vmem.size(), 10u);

  ZVirtualMemory vmem1 = vmem.split(5);
  EXPECT_EQ(vmem1.size(), 5u);
  EXPECT_EQ(vmem.size(), 5u);

  ZVirtualMemory vmem2 = vmem.split(5);
  EXPECT_EQ(vmem2.size(), 5u);
  EXPECT_EQ(vmem.size(), 0u);

  ZVirtualMemory vmem3 = vmem.split(0);
  EXPECT_EQ(vmem3.size(), 0u);
}