8204210: Implementation: JEP 333: ZGC: A Scalable Low-Latency Garbage Collector (Experimental)
Reviewed-by: pliden, stefank, eosterlund, ehelin, sjohanss, rbackman, coleenp, ihse, jgeorge, lmesnik, rkennke
Contributed-by: per.liden@oracle.com, stefan.karlsson@oracle.com, erik.osterlund@oracle.com, mikael.gerdin@oracle.com, kim.barrett@oracle.com, nils.eliasson@oracle.com, rickard.backman@oracle.com, rwestrel@redhat.com, coleen.phillimore@oracle.com, robbin.ehn@oracle.com, gerard.ziemski@oracle.com, hugh.wilkinson@intel.com, sandhya.viswanathan@intel.com, bill.npo.wheeler@intel.com, vinay.k.awasthi@intel.com, yasuenag@gmail.com
/*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
#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);
}