| /* |
| * 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 "memory/allocation.hpp" |
| #include "memory/metachunk.hpp" |
| #include "unittest.hpp" |
| #include "utilities/align.hpp" |
| #include "utilities/copy.hpp" |
| #include "utilities/debug.hpp" |
| |
| class MetachunkTest { |
| public: |
| static MetaWord* initial_top(Metachunk* metachunk) { |
| return metachunk->initial_top(); |
| } |
| static MetaWord* top(Metachunk* metachunk) { |
| return metachunk->top(); |
| } |
| |
| }; |
| |
| TEST(Metachunk, basic) { |
| size_t size = 2 * 1024 * 1024; |
| void* memory = malloc(size); |
| ASSERT_TRUE(NULL != memory) << "Failed to malloc 2MB"; |
| |
| Metachunk* metachunk = ::new (memory) Metachunk(size / BytesPerWord, NULL); |
| |
| EXPECT_EQ((MetaWord*) metachunk, metachunk->bottom()); |
| EXPECT_EQ((uintptr_t*) metachunk + metachunk->size(), metachunk->end()); |
| |
| // Check sizes |
| EXPECT_EQ(metachunk->size(), metachunk->word_size()); |
| EXPECT_EQ(pointer_delta(metachunk->end(), metachunk->bottom(), |
| sizeof (MetaWord*)), |
| metachunk->word_size()); |
| |
| // Check usage |
| EXPECT_EQ(metachunk->used_word_size(), metachunk->overhead()); |
| EXPECT_EQ(metachunk->word_size() - metachunk->used_word_size(), |
| metachunk->free_word_size()); |
| EXPECT_EQ(MetachunkTest::top(metachunk), MetachunkTest::initial_top(metachunk)); |
| EXPECT_TRUE(metachunk->is_empty()); |
| |
| // Allocate |
| size_t alloc_size = 64; // Words |
| EXPECT_TRUE(is_aligned(alloc_size, Metachunk::object_alignment())); |
| |
| MetaWord* mem = metachunk->allocate(alloc_size); |
| |
| // Check post alloc |
| EXPECT_EQ(MetachunkTest::initial_top(metachunk), mem); |
| EXPECT_EQ(MetachunkTest::top(metachunk), mem + alloc_size); |
| EXPECT_EQ(metachunk->overhead() + alloc_size, metachunk->used_word_size()); |
| EXPECT_EQ(metachunk->word_size() - metachunk->used_word_size(), |
| metachunk->free_word_size()); |
| EXPECT_FALSE(metachunk->is_empty()); |
| |
| // Clear chunk |
| metachunk->reset_empty(); |
| |
| // Check post clear |
| EXPECT_EQ(metachunk->used_word_size(), metachunk->overhead()); |
| EXPECT_EQ(metachunk->word_size() - metachunk->used_word_size(), |
| metachunk->free_word_size()); |
| EXPECT_EQ(MetachunkTest::top(metachunk), MetachunkTest::initial_top(metachunk)); |
| EXPECT_TRUE(metachunk->is_empty()); |
| |
| free(memory); |
| } |