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comparison gcc/ggc-page.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children 1830386684a0
comparison
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111:04ced10e8804 131:84e7813d76e9
1 /* "Bag-of-pages" garbage collector for the GNU compiler. 1 /* "Bag-of-pages" garbage collector for the GNU compiler.
2 Copyright (C) 1999-2017 Free Software Foundation, Inc. 2 Copyright (C) 1999-2018 Free Software Foundation, Inc.
3 3
4 This file is part of GCC. 4 This file is part of GCC.
5 5
6 GCC is free software; you can redistribute it and/or modify it under 6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free 7 the terms of the GNU General Public License as published by the Free
89 1: GC statistics only. 89 1: GC statistics only.
90 2: Page-entry allocations/deallocations as well. 90 2: Page-entry allocations/deallocations as well.
91 3: Object allocations as well. 91 3: Object allocations as well.
92 4: Object marks as well. */ 92 4: Object marks as well. */
93 #define GGC_DEBUG_LEVEL (0) 93 #define GGC_DEBUG_LEVEL (0)
94
95 #ifndef HOST_BITS_PER_PTR
96 #define HOST_BITS_PER_PTR HOST_BITS_PER_LONG
97 #endif
98
99 94
100 /* A two-level tree is used to look up the page-entry for a given 95 /* A two-level tree is used to look up the page-entry for a given
101 pointer. Two chunks of the pointer's bits are extracted to index 96 pointer. Two chunks of the pointer's bits are extracted to index
102 the first and second levels of the tree, as follows: 97 the first and second levels of the tree, as follows:
103 98