1 /*
2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
55 }
56
57 bool ZVirtualMemoryManager::is_initialized() const {
58 return _initialized;
59 }
60
61 ZVirtualMemory ZVirtualMemoryManager::alloc(size_t size, bool alloc_from_front) {
62 uintptr_t start;
63
64 if (alloc_from_front || size <= ZPageSizeSmall) {
65 // Small page
66 start = _manager.alloc_from_front(size);
67 } else {
68 // Medium/Large page
69 start = _manager.alloc_from_back(size);
70 }
71
72 return ZVirtualMemory(start, size);
73 }
74
75 void ZVirtualMemoryManager::free(ZVirtualMemory vmem) {
76 _manager.free(vmem.start(), vmem.size());
77 }
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1 /*
2 * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
55 }
56
57 bool ZVirtualMemoryManager::is_initialized() const {
58 return _initialized;
59 }
60
61 ZVirtualMemory ZVirtualMemoryManager::alloc(size_t size, bool alloc_from_front) {
62 uintptr_t start;
63
64 if (alloc_from_front || size <= ZPageSizeSmall) {
65 // Small page
66 start = _manager.alloc_from_front(size);
67 } else {
68 // Medium/Large page
69 start = _manager.alloc_from_back(size);
70 }
71
72 return ZVirtualMemory(start, size);
73 }
74
75 void ZVirtualMemoryManager::free(const ZVirtualMemory& vmem) {
76 _manager.free(vmem.start(), vmem.size());
77 }
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