99 lines
3.5 KiB
C++
99 lines
3.5 KiB
C++
/*
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* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include "precompiled.hpp"
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#include "memory/allocation.hpp"
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#include "memory/metaspace/metachunk.hpp"
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#include "unittest.hpp"
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#include "utilities/align.hpp"
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#include "utilities/copy.hpp"
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#include "utilities/debug.hpp"
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using namespace metaspace;
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class MetachunkTest {
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public:
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static MetaWord* initial_top(Metachunk* metachunk) {
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return metachunk->initial_top();
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}
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static MetaWord* top(Metachunk* metachunk) {
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return metachunk->top();
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}
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};
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TEST(Metachunk, basic) {
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const ChunkIndex chunk_type = MediumIndex;
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const bool is_class = false;
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const size_t word_size = get_size_for_nonhumongous_chunktype(chunk_type, is_class);
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// Allocate the chunk with correct alignment.
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void* memory = malloc(word_size * BytesPerWord * 2);
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ASSERT_TRUE(NULL != memory) << "Failed to malloc 2MB";
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void* p_placement = align_up(memory, word_size * BytesPerWord);
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Metachunk* metachunk = ::new (p_placement) Metachunk(chunk_type, is_class, word_size, NULL);
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EXPECT_EQ((MetaWord*) metachunk, metachunk->bottom());
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EXPECT_EQ((uintptr_t*) metachunk + metachunk->size(), metachunk->end());
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// Check sizes
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EXPECT_EQ(metachunk->size(), metachunk->word_size());
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EXPECT_EQ(pointer_delta(metachunk->end(), metachunk->bottom(),
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sizeof (MetaWord)),
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metachunk->word_size());
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// Check usage
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EXPECT_EQ(metachunk->used_word_size(), metachunk->overhead());
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EXPECT_EQ(metachunk->word_size() - metachunk->used_word_size(),
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metachunk->free_word_size());
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EXPECT_EQ(MetachunkTest::top(metachunk), MetachunkTest::initial_top(metachunk));
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EXPECT_TRUE(metachunk->is_empty());
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// Allocate
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size_t alloc_size = 64; // Words
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EXPECT_TRUE(is_aligned(alloc_size, Metachunk::object_alignment()));
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MetaWord* mem = metachunk->allocate(alloc_size);
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// Check post alloc
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EXPECT_EQ(MetachunkTest::initial_top(metachunk), mem);
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EXPECT_EQ(MetachunkTest::top(metachunk), mem + alloc_size);
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EXPECT_EQ(metachunk->overhead() + alloc_size, metachunk->used_word_size());
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EXPECT_EQ(metachunk->word_size() - metachunk->used_word_size(),
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metachunk->free_word_size());
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EXPECT_FALSE(metachunk->is_empty());
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// Clear chunk
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metachunk->reset_empty();
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// Check post clear
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EXPECT_EQ(metachunk->used_word_size(), metachunk->overhead());
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EXPECT_EQ(metachunk->word_size() - metachunk->used_word_size(),
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metachunk->free_word_size());
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EXPECT_EQ(MetachunkTest::top(metachunk), MetachunkTest::initial_top(metachunk));
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EXPECT_TRUE(metachunk->is_empty());
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free(memory);
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}
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