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 */
39 #include "utilities/debug.hpp"
40 #include "utilities/globalDefinitions.hpp"
41
42 static const ZStatCounter ZCounterRelocationContention("Contention", "Relocation Contention", ZStatUnitOpsPerSecond);
43
44 ZPage::ZPage(uint8_t type, ZVirtualMemory vmem, ZPhysicalMemory pmem) :
45 _type(type),
46 _pinned(0),
47 _numa_id((uint8_t)-1),
48 _seqnum(0),
49 _virtual(vmem),
50 _top(start()),
51 _livemap(object_max_count()),
52 _refcount(0),
53 _forwarding(),
54 _physical(pmem) {
55 assert(!_physical.is_null(), "Should not be null");
56 assert(!_virtual.is_null(), "Should not be null");
57 assert((type == ZPageTypeSmall && size() == ZPageSizeSmall) ||
58 (type == ZPageTypeMedium && size() == ZPageSizeMedium) ||
59 (type == ZPageTypeLarge && is_aligned(size(), ZPageSizeMin)),
60 "Page type/size mismatch");
61 }
62
63 ZPage::~ZPage() {
64 assert(!is_active(), "Should not be active");
65 assert(is_detached(), "Should be detached");
66 }
67
68 void ZPage::reset() {
69 assert(!is_active(), "Should not be active");
70 assert(!is_pinned(), "Should not be pinned");
71 assert(!is_detached(), "Should not be detached");
72
73 _seqnum = ZGlobalSeqNum;
74 _top = start();
75 _livemap.reset();
76
77 // Make sure we don't make the page active before
78 // the reset of the above fields are visible.
79 OrderAccess::storestore();
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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 */
39 #include "utilities/debug.hpp"
40 #include "utilities/globalDefinitions.hpp"
41
42 static const ZStatCounter ZCounterRelocationContention("Contention", "Relocation Contention", ZStatUnitOpsPerSecond);
43
44 ZPage::ZPage(uint8_t type, ZVirtualMemory vmem, ZPhysicalMemory pmem) :
45 _type(type),
46 _pinned(0),
47 _numa_id((uint8_t)-1),
48 _seqnum(0),
49 _virtual(vmem),
50 _top(start()),
51 _livemap(object_max_count()),
52 _refcount(0),
53 _forwarding(),
54 _physical(pmem) {
55 assert(!_physical.is_null(), "Should not be null");
56 assert(!_virtual.is_null(), "Should not be null");
57 assert((type == ZPageTypeSmall && size() == ZPageSizeSmall) ||
58 (type == ZPageTypeMedium && size() == ZPageSizeMedium) ||
59 (type == ZPageTypeLarge && is_aligned(size(), ZGranuleSize)),
60 "Page type/size mismatch");
61 }
62
63 ZPage::~ZPage() {
64 assert(!is_active(), "Should not be active");
65 assert(is_detached(), "Should be detached");
66 }
67
68 void ZPage::reset() {
69 assert(!is_active(), "Should not be active");
70 assert(!is_pinned(), "Should not be pinned");
71 assert(!is_detached(), "Should not be detached");
72
73 _seqnum = ZGlobalSeqNum;
74 _top = start();
75 _livemap.reset();
76
77 // Make sure we don't make the page active before
78 // the reset of the above fields are visible.
79 OrderAccess::storestore();
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