/*

 * Copyright (c) 2016, 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 "utilities/debug.hpp"

#include "unittest.hpp"

TEST(ZVirtualMemory, split) {

  const size_t PageSize = 2 * M;

  ZVirtualMemory mem(0, 10 * PageSize);

  ZVirtualMemory mem_split0 = mem.split(0 * PageSize);

  EXPECT_EQ(mem_split0.size(),  0 * PageSize);

  EXPECT_EQ(       mem.size(), 10 * PageSize);

  ZVirtualMemory mem_split1 = mem.split(5u * PageSize);

  EXPECT_EQ(mem_split1.size(),  5 * PageSize);

  EXPECT_EQ(       mem.size(),  5 * PageSize);

  ZVirtualMemory mem_split2 = mem.split(5u * PageSize);

  EXPECT_EQ(mem_split2.size(),  5 * PageSize);

  EXPECT_EQ(       mem.size(),  0 * PageSize);

  ZVirtualMemory mem_split3 = mem.split(0 * PageSize);

  EXPECT_EQ(mem_split3.size(),  0 * PageSize);

}