author | kbarrett |
Thu, 15 Nov 2018 19:59:10 -0500 | |
changeset 52582 | 6df094be7f58 |
child 52624 | bbdebc744bf3 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 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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*/ |
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#include "precompiled.hpp" |
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#include "gc/shared/ptrQueue.hpp" |
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#include "runtime/mutex.hpp" |
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#include "unittest.hpp" |
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// Some basic testing of BufferNode::Allocator. |
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TEST_VM(PtrQueueBufferAllocatorTest, test) { |
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Mutex m(Mutex::leaf, "PtrQueueBufferAllocatorTest", |
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false, Mutex::_safepoint_check_never); |
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BufferNode::Allocator allocator(256, &m); |
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// Allocate some new nodes for use in testing. |
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BufferNode* nodes[10] = {}; |
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const size_t node_count = ARRAY_SIZE(nodes); |
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for (size_t i = 0; i < node_count; ++i) { |
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ASSERT_EQ(0u, allocator.free_count()); |
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nodes[i] = allocator.allocate(); |
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ASSERT_EQ(NULL, nodes[i]->next()); |
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} |
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// Release the nodes, adding them to the allocator's free list. |
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for (size_t i = 0; i < node_count; ++i) { |
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ASSERT_EQ(i, allocator.free_count()); |
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allocator.release(nodes[i]); |
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if (i == 0) { |
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ASSERT_EQ(NULL, nodes[i]->next()); |
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} else { |
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ASSERT_EQ(nodes[i - 1], nodes[i]->next()); |
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} |
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} |
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// Allocate nodes from the free list. |
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for (size_t i = 0; i < node_count; ++i) { |
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size_t j = node_count - i; |
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ASSERT_EQ(j, allocator.free_count()); |
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ASSERT_EQ(nodes[j - 1], allocator.allocate()); |
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} |
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ASSERT_EQ(0u, allocator.free_count()); |
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// Release nodes back to the free list. |
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for (size_t i = 0; i < node_count; ++i) { |
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allocator.release(nodes[i]); |
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} |
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ASSERT_EQ(node_count, allocator.free_count()); |
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// Destroy some nodes in the free list. |
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// We don't have a way to verify destruction, but we can at |
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// leat verify we don't crash along the way. |
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allocator.reduce_free_list(); |
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// destroy allocator. |
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} |