1 /*
2 * Copyright (c) 2015, 2018, 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 */
23
24 #ifndef SHARE_GC_Z_ZGLOBALS_HPP
25 #define SHARE_GC_Z_ZGLOBALS_HPP
26
27 #include "utilities/globalDefinitions.hpp"
28 #include "utilities/macros.hpp"
29 #include OS_CPU_HEADER(gc/z/zGlobals)
30
31 // Collector name
32 const char* const ZGCName = "The Z Garbage Collector";
33
34 // Global phase state
35 extern uint32_t ZGlobalPhase;
36 const uint32_t ZPhaseMark = 0;
37 const uint32_t ZPhaseMarkCompleted = 1;
38 const uint32_t ZPhaseRelocate = 2;
39
40 // Global sequence number
41 extern uint32_t ZGlobalSeqNum;
42
43 // Page types
44 const uint8_t ZPageTypeSmall = 0;
45 const uint8_t ZPageTypeMedium = 1;
46 const uint8_t ZPageTypeLarge = 2;
47
48 // Page size shifts
49 const size_t ZPageSizeSmallShift = ZPlatformPageSizeSmallShift;
50 const size_t ZPageSizeMediumShift = ZPageSizeSmallShift + 4;
51 const size_t ZPageSizeMinShift = ZPageSizeSmallShift;
52
53 // Page sizes
54 const size_t ZPageSizeSmall = (size_t)1 << ZPageSizeSmallShift;
55 const size_t ZPageSizeMedium = (size_t)1 << ZPageSizeMediumShift;
56 const size_t ZPageSizeMin = (size_t)1 << ZPageSizeMinShift;
57
58 // Object size limits
59 const size_t ZObjectSizeLimitSmall = (ZPageSizeSmall / 8); // Allow 12.5% waste
60 const size_t ZObjectSizeLimitMedium = (ZPageSizeMedium / 8); // Allow 12.5% waste
61
62 // Object alignment shifts
63 extern const int& ZObjectAlignmentSmallShift;
64 const int ZObjectAlignmentMediumShift = ZPageSizeMediumShift - 13; // 8192 objects per page
65 const int ZObjectAlignmentLargeShift = ZPageSizeSmallShift;
66
67 // Object alignments
68 extern const int& ZObjectAlignmentSmall;
69 const int ZObjectAlignmentMedium = 1 << ZObjectAlignmentMediumShift;
70 const int ZObjectAlignmentLarge = 1 << ZObjectAlignmentLargeShift;
71
72 // Pointer part of address
73 const uintptr_t ZAddressOffsetShift = 0;
74 const uintptr_t ZAddressOffsetBits = ZPlatformAddressOffsetBits;
75 const uintptr_t ZAddressOffsetMask = (((uintptr_t)1 << ZAddressOffsetBits) - 1) << ZAddressOffsetShift;
76 const size_t ZAddressOffsetMax = (uintptr_t)1 << ZAddressOffsetBits;
116 extern uintptr_t ZAddressGoodMask;
117 extern uintptr_t ZAddressBadMask;
118 extern uintptr_t ZAddressWeakBadMask;
119
120 // Marked state
121 extern uintptr_t ZAddressMetadataMarked;
122
123 // Mark stack space
124 extern uintptr_t ZMarkStackSpaceStart;
125 const size_t ZMarkStackSpaceExpandSize = (size_t)1 << 25; // 32M
126
127 // Mark stack and magazine sizes
128 const size_t ZMarkStackSizeShift = 11; // 2K
129 const size_t ZMarkStackSize = (size_t)1 << ZMarkStackSizeShift;
130 const size_t ZMarkStackHeaderSize = (size_t)1 << 4; // 16B
131 const size_t ZMarkStackSlots = (ZMarkStackSize - ZMarkStackHeaderSize) / sizeof(uintptr_t);
132 const size_t ZMarkStackMagazineSize = (size_t)1 << 15; // 32K
133 const size_t ZMarkStackMagazineSlots = (ZMarkStackMagazineSize / ZMarkStackSize) - 1;
134
135 // Mark stripe size
136 const size_t ZMarkStripeShift = ZPageSizeMinShift;
137
138 // Max number of mark stripes
139 const size_t ZMarkStripesMax = 16; // Must be a power of two
140
141 // Mark cache size
142 const size_t ZMarkCacheSize = 1024; // Must be a power of two
143
144 // Partial array minimum size
145 const size_t ZMarkPartialArrayMinSizeShift = 12; // 4K
146 const size_t ZMarkPartialArrayMinSize = (size_t)1 << ZMarkPartialArrayMinSizeShift;
147
148 // Max number of proactive/terminate flush attempts
149 const size_t ZMarkProactiveFlushMax = 10;
150 const size_t ZMarkTerminateFlushMax = 3;
151
152 // Try complete mark timeout
153 const uint64_t ZMarkCompleteTimeout = 1; // ms
154
155 #endif // SHARE_GC_Z_ZGLOBALS_HPP
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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 */
23
24 #ifndef SHARE_GC_Z_ZGLOBALS_HPP
25 #define SHARE_GC_Z_ZGLOBALS_HPP
26
27 #include "utilities/globalDefinitions.hpp"
28 #include "utilities/macros.hpp"
29 #include OS_CPU_HEADER(gc/z/zGlobals)
30
31 // Collector name
32 const char* const ZGCName = "The Z Garbage Collector";
33
34 // Global phase state
35 extern uint32_t ZGlobalPhase;
36 const uint32_t ZPhaseMark = 0;
37 const uint32_t ZPhaseMarkCompleted = 1;
38 const uint32_t ZPhaseRelocate = 2;
39
40 // Global sequence number
41 extern uint32_t ZGlobalSeqNum;
42
43 // Granule shift/size
44 const size_t ZGranuleSizeShift = ZPlatformGranuleSizeShift;
45 const size_t ZGranuleSize = (size_t)1 << ZGranuleSizeShift;
46
47 // Page types
48 const uint8_t ZPageTypeSmall = 0;
49 const uint8_t ZPageTypeMedium = 1;
50 const uint8_t ZPageTypeLarge = 2;
51
52 // Page size shifts
53 const size_t ZPageSizeSmallShift = ZGranuleSizeShift;
54 const size_t ZPageSizeMediumShift = ZPageSizeSmallShift + 4;
55
56 // Page sizes
57 const size_t ZPageSizeSmall = (size_t)1 << ZPageSizeSmallShift;
58 const size_t ZPageSizeMedium = (size_t)1 << ZPageSizeMediumShift;
59
60 // Object size limits
61 const size_t ZObjectSizeLimitSmall = (ZPageSizeSmall / 8); // Allow 12.5% waste
62 const size_t ZObjectSizeLimitMedium = (ZPageSizeMedium / 8); // Allow 12.5% waste
63
64 // Object alignment shifts
65 extern const int& ZObjectAlignmentSmallShift;
66 const int ZObjectAlignmentMediumShift = ZPageSizeMediumShift - 13; // 8192 objects per page
67 const int ZObjectAlignmentLargeShift = ZPageSizeSmallShift;
68
69 // Object alignments
70 extern const int& ZObjectAlignmentSmall;
71 const int ZObjectAlignmentMedium = 1 << ZObjectAlignmentMediumShift;
72 const int ZObjectAlignmentLarge = 1 << ZObjectAlignmentLargeShift;
73
74 // Pointer part of address
75 const uintptr_t ZAddressOffsetShift = 0;
76 const uintptr_t ZAddressOffsetBits = ZPlatformAddressOffsetBits;
77 const uintptr_t ZAddressOffsetMask = (((uintptr_t)1 << ZAddressOffsetBits) - 1) << ZAddressOffsetShift;
78 const size_t ZAddressOffsetMax = (uintptr_t)1 << ZAddressOffsetBits;
118 extern uintptr_t ZAddressGoodMask;
119 extern uintptr_t ZAddressBadMask;
120 extern uintptr_t ZAddressWeakBadMask;
121
122 // Marked state
123 extern uintptr_t ZAddressMetadataMarked;
124
125 // Mark stack space
126 extern uintptr_t ZMarkStackSpaceStart;
127 const size_t ZMarkStackSpaceExpandSize = (size_t)1 << 25; // 32M
128
129 // Mark stack and magazine sizes
130 const size_t ZMarkStackSizeShift = 11; // 2K
131 const size_t ZMarkStackSize = (size_t)1 << ZMarkStackSizeShift;
132 const size_t ZMarkStackHeaderSize = (size_t)1 << 4; // 16B
133 const size_t ZMarkStackSlots = (ZMarkStackSize - ZMarkStackHeaderSize) / sizeof(uintptr_t);
134 const size_t ZMarkStackMagazineSize = (size_t)1 << 15; // 32K
135 const size_t ZMarkStackMagazineSlots = (ZMarkStackMagazineSize / ZMarkStackSize) - 1;
136
137 // Mark stripe size
138 const size_t ZMarkStripeShift = ZGranuleSizeShift;
139
140 // Max number of mark stripes
141 const size_t ZMarkStripesMax = 16; // Must be a power of two
142
143 // Mark cache size
144 const size_t ZMarkCacheSize = 1024; // Must be a power of two
145
146 // Partial array minimum size
147 const size_t ZMarkPartialArrayMinSizeShift = 12; // 4K
148 const size_t ZMarkPartialArrayMinSize = (size_t)1 << ZMarkPartialArrayMinSizeShift;
149
150 // Max number of proactive/terminate flush attempts
151 const size_t ZMarkProactiveFlushMax = 10;
152 const size_t ZMarkTerminateFlushMax = 3;
153
154 // Try complete mark timeout
155 const uint64_t ZMarkCompleteTimeout = 1; // ms
156
157 #endif // SHARE_GC_Z_ZGLOBALS_HPP
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