view test/hotspot/gtest/gc/z/test_zBitField.cpp @ 50525:767cdb97f103

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
author pliden
date Tue, 12 Jun 2018 17:40:28 +0200
parents
children b833992fa8fa
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/*
 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL.  Use is subject to license terms.
 */

#include "precompiled.hpp"
#include "gc/z/zBitField.hpp"
#include "unittest.hpp"

TEST(ZBitFieldTest, test) {
  typedef ZBitField<uint64_t, bool,      0,  1>    field_bool;
  typedef ZBitField<uint64_t, uint8_t,   1,  8>    field_uint8;
  typedef ZBitField<uint64_t, uint16_t,  2, 16>    field_uint16;
  typedef ZBitField<uint64_t, uint32_t, 32, 32>    field_uint32;
  typedef ZBitField<uint64_t, uint64_t,  0, 63>    field_uint64;
  typedef ZBitField<uint64_t, void*,     1, 61, 3> field_pointer;

  uint64_t entry;

  {
    const bool value = false;
    entry = field_bool::encode(value);
    EXPECT_EQ(field_bool::decode(entry), value) << "Should be equal";
  }

  {
    const bool value = true;
    entry = field_bool::encode(value);
      EXPECT_EQ(field_bool::decode(entry), value) << "Should be equal";
  }

  {
    const uint8_t value = ~(uint8_t)0;
    entry = field_uint8::encode(value);
    EXPECT_EQ(field_uint8::decode(entry), value) << "Should be equal";
  }

  {
    const uint16_t value = ~(uint16_t)0;
    entry = field_uint16::encode(value);
    EXPECT_EQ(field_uint16::decode(entry), value) << "Should be equal";
  }

  {
    const uint32_t value = ~(uint32_t)0;
    entry = field_uint32::encode(value);
    EXPECT_EQ(field_uint32::decode(entry), value) << "Should be equal";
  }

  {
    const uint64_t value = ~(uint64_t)0 >> 1;
    entry = field_uint64::encode(value);
    EXPECT_EQ(field_uint64::decode(entry), value) << "Should be equal";
  }

  {
    void* const value = (void*)(~(uintptr_t)0 << 3);
    entry = field_pointer::encode(value);
    EXPECT_EQ(field_pointer::decode(entry), value) << "Should be equal";
  }
}