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 */
41 assert_initialized();
42 }
43
44 ZPage::ZPage(uint8_t type, const ZVirtualMemory& vmem, const ZPhysicalMemory& pmem) :
45 _type(type),
46 _numa_id((uint8_t)-1),
47 _seqnum(0),
48 _virtual(vmem),
49 _top(start()),
50 _livemap(object_max_count()),
51 _last_used(0),
52 _physical(pmem) {
53 assert_initialized();
54 }
55
56 ZPage::~ZPage() {}
57
58 void ZPage::assert_initialized() const {
59 assert(!_virtual.is_null(), "Should not be null");
60 assert(!_physical.is_null(), "Should not be null");
61 assert((_type == ZPageTypeSmall && size() == ZPageSizeSmall) ||
62 (_type == ZPageTypeMedium && size() == ZPageSizeMedium) ||
63 (_type == ZPageTypeLarge && is_aligned(size(), ZGranuleSize)),
64 "Page type/size mismatch");
65 }
66
67 void ZPage::reset() {
68 _seqnum = ZGlobalSeqNum;
69 _top = start();
70 _livemap.reset();
71 _last_used = 0;
72 }
73
74 ZPage* ZPage::retype(uint8_t type) {
75 assert(_type != type, "Invalid retype");
76 _type = type;
77 _livemap.resize(object_max_count());
78 return this;
79 }
80
81 ZPage* ZPage::split(size_t size) {
82 return split(type_from_size(size), size);
83 }
84
85 ZPage* ZPage::split(uint8_t type, size_t size) {
86 assert(_virtual.size() > size, "Invalid split");
87
88 // Resize this page, keep _numa_id, _seqnum, and _last_used
89 const ZVirtualMemory vmem = _virtual.split(size);
90 const ZPhysicalMemory pmem = _physical.split(size);
91 _type = type_from_size(_virtual.size());
92 _top = start();
93 _livemap.resize(object_max_count());
94
95 // Create new page, inherit _seqnum and _last_used
96 ZPage* const page = new ZPage(type, vmem, pmem);
97 page->_seqnum = _seqnum;
98 page->_last_used = _last_used;
99 return page;
100 }
101
102 void ZPage::print_on(outputStream* out) const {
103 out->print_cr(" %-6s " PTR_FORMAT " " PTR_FORMAT " " PTR_FORMAT " %s%s",
104 type_to_string(), start(), top(), end(),
105 is_allocating() ? " Allocating" : "",
106 is_relocatable() ? " Relocatable" : "");
107 }
108
109 void ZPage::print() const {
110 print_on(tty);
111 }
|
1 /*
2 * Copyright (c) 2015, 2020, 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 */
41 assert_initialized();
42 }
43
44 ZPage::ZPage(uint8_t type, const ZVirtualMemory& vmem, const ZPhysicalMemory& pmem) :
45 _type(type),
46 _numa_id((uint8_t)-1),
47 _seqnum(0),
48 _virtual(vmem),
49 _top(start()),
50 _livemap(object_max_count()),
51 _last_used(0),
52 _physical(pmem) {
53 assert_initialized();
54 }
55
56 ZPage::~ZPage() {}
57
58 void ZPage::assert_initialized() const {
59 assert(!_virtual.is_null(), "Should not be null");
60 assert(!_physical.is_null(), "Should not be null");
61 assert(_virtual.size() == _physical.size(), "Virtual/Physical size mismatch");
62 assert((_type == ZPageTypeSmall && size() == ZPageSizeSmall) ||
63 (_type == ZPageTypeMedium && size() == ZPageSizeMedium) ||
64 (_type == ZPageTypeLarge && is_aligned(size(), ZGranuleSize)),
65 "Page type/size mismatch");
66 }
67
68 void ZPage::reset() {
69 _seqnum = ZGlobalSeqNum;
70 _top = start();
71 _livemap.reset();
72 _last_used = 0;
73 }
74
75 ZPage* ZPage::retype(uint8_t type) {
76 assert(_type != type, "Invalid retype");
77 _type = type;
78 _livemap.resize(object_max_count());
79 return this;
80 }
81
82 ZPage* ZPage::split(size_t size) {
83 return split(type_from_size(size), size);
84 }
85
86 ZPage* ZPage::split(uint8_t type, size_t size) {
87 assert(_virtual.size() > size, "Invalid split");
88
89 // Resize this page, keep _numa_id, _seqnum, and _last_used
90 const ZVirtualMemory vmem = _virtual.split(size);
91 const ZPhysicalMemory pmem = _physical.split(size);
92 _type = type_from_size(_virtual.size());
93 _top = start();
94 _livemap.resize(object_max_count());
95
96 // Create new page, inherit _seqnum and _last_used
97 ZPage* const page = new ZPage(type, vmem, pmem);
98 page->_seqnum = _seqnum;
99 page->_last_used = _last_used;
100 return page;
101 }
102
103 ZPage* ZPage::split_committed() {
104 const ZPhysicalMemory pmem = _physical.split_committed();
105 if (pmem.is_null()) {
106 // Nothing committed
107 return NULL;
108 }
109
110 assert(!_physical.is_null(), "Should not be null");
111
112 // Resize this page
113 const ZVirtualMemory vmem = _virtual.split(pmem.size());
114 _type = type_from_size(_virtual.size());
115 _top = start();
116 _livemap.resize(object_max_count());
117
118 // Create new page
119 return new ZPage(vmem, pmem);
120 }
121
122 void ZPage::print_on(outputStream* out) const {
123 out->print_cr(" %-6s " PTR_FORMAT " " PTR_FORMAT " " PTR_FORMAT " %s%s",
124 type_to_string(), start(), top(), end(),
125 is_allocating() ? " Allocating" : "",
126 is_relocatable() ? " Relocatable" : "");
127 }
128
129 void ZPage::print() const {
130 print_on(tty);
131 }
|