author | coleenp |
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/* |
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* Copyright (c) 1999, 2010, 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 "ci/ciConstantPoolCache.hpp" |
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#include "ci/ciUtilities.inline.hpp" |
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#include "memory/allocation.hpp" |
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#include "memory/allocation.inline.hpp" |
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// ciConstantPoolCache |
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// |
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// This class caches indexed constant pool lookups. |
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// ------------------------------------------------------------------ |
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// ciConstantPoolCache::ciConstantPoolCache |
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ciConstantPoolCache::ciConstantPoolCache(Arena* arena, |
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int expected_size) { |
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_elements = |
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new (arena) GrowableArray<void*>(arena, expected_size, 0, 0); |
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_keys = new (arena) GrowableArray<int>(arena, expected_size, 0, 0); |
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} |
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int ciConstantPoolCache::key_compare(const int& key, const int& elt) { |
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if (key < elt) return -1; |
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else if (key > elt) return 1; |
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else return 0; |
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} |
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// ------------------------------------------------------------------ |
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// ciConstantPoolCache::get |
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// |
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// Get the entry at some index |
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void* ciConstantPoolCache::get(int index) { |
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ASSERT_IN_VM; |
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bool found = false; |
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int pos = _keys->find_sorted<int, ciConstantPoolCache::key_compare>(index, found); |
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if (!found) { |
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// This element is not present in the cache. |
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return NULL; |
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} |
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return _elements->at(pos); |
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} |
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// ------------------------------------------------------------------ |
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// ciConstantPoolCache::insert |
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// |
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// Insert a ciObject into the table at some index. |
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void ciConstantPoolCache::insert(int index, void* elem) { |
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bool found = false; |
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int pos = _keys->find_sorted<int, ciConstantPoolCache::key_compare>(index, found); |
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assert(!found, "duplicate"); |
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_keys->insert_before(pos, index); |
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_elements->insert_before(pos, elem); |
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} |
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// ------------------------------------------------------------------ |
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// ciConstantPoolCache::print |
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// |
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// Print debugging information about the cache. |
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void ciConstantPoolCache::print() { |
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Unimplemented(); |
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} |