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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
parents 84e7813d76e9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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1 /* Garbage collection for the GNU compiler. Internal definitions
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2 for ggc-*.c and stringpool.c.
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3
145
1830386684a0 gcc-9.2.0
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4 Copyright (C) 2009-2020 Free Software Foundation, Inc.
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it under
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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9 the terms of the GNU General Public License as published by the Free
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10 Software Foundation; either version 3, or (at your option) any later
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11 version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 #ifndef GCC_GGC_INTERNAL_H
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23 #define GCC_GGC_INTERNAL_H
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25
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26 /* Call ggc_set_mark on all the roots. */
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27 extern void ggc_mark_roots (void);
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28
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29 /* Stringpool. */
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30
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31 /* Mark the entries in the string pool. */
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32 extern void ggc_mark_stringpool (void);
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33
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34 /* Purge the entries in the string pool. */
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35 extern void ggc_purge_stringpool (void);
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36
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37 /* Save and restore the string pool entries for PCH. */
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38
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39 extern void gt_pch_save_stringpool (void);
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40 extern void gt_pch_fixup_stringpool (void);
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41 extern void gt_pch_restore_stringpool (void);
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42
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43 /* PCH and GGC handling for strings, mostly trivial. */
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44 extern void gt_pch_p_S (void *, void *, gt_pointer_operator, void *);
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45
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46 /* PCH. */
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47
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48 struct ggc_pch_data;
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49
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50 /* Return a new ggc_pch_data structure. */
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51 extern struct ggc_pch_data *init_ggc_pch (void);
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52
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53 /* The second parameter and third parameters give the address and size
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54 of an object. Update the ggc_pch_data structure with as much of
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55 that information as is necessary. The bool argument should be true
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56 if the object is a string. */
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57 extern void ggc_pch_count_object (struct ggc_pch_data *, void *, size_t, bool);
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58
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59 /* Return the total size of the data to be written to hold all
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60 the objects previously passed to ggc_pch_count_object. */
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61 extern size_t ggc_pch_total_size (struct ggc_pch_data *);
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62
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63 /* The objects, when read, will most likely be at the address
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64 in the second parameter. */
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65 extern void ggc_pch_this_base (struct ggc_pch_data *, void *);
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66
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67 /* Assuming that the objects really do end up at the address
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68 passed to ggc_pch_this_base, return the address of this object.
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69 The bool argument should be true if the object is a string. */
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70 extern char *ggc_pch_alloc_object (struct ggc_pch_data *, void *, size_t, bool);
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71
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72 /* Write out any initial information required. */
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73 extern void ggc_pch_prepare_write (struct ggc_pch_data *, FILE *);
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74
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75 /* Write out this object, including any padding. The last argument should be
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76 true if the object is a string. */
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77 extern void ggc_pch_write_object (struct ggc_pch_data *, FILE *, void *,
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78 void *, size_t, bool);
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79
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80 /* All objects have been written, write out any final information
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81 required. */
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82 extern void ggc_pch_finish (struct ggc_pch_data *, FILE *);
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83
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84 /* A PCH file has just been read in at the address specified second
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85 parameter. Set up the GC implementation for the new objects. */
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86 extern void ggc_pch_read (FILE *, void *);
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87
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88
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89 /* Allocation and collection. */
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90
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91 /* When set, ggc_collect will do collection. */
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92 extern bool ggc_force_collect;
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93
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94 extern void ggc_record_overhead (size_t, size_t, void * FINAL_MEM_STAT_DECL);
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95
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96 extern void ggc_free_overhead (void *);
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97
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98 extern void ggc_prune_overhead_list (void);
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99
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100 /* Return the number of bytes allocated at the indicated address. */
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101 extern size_t ggc_get_size (const void *);
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102
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103
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104 /* Statistics. */
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105
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106 /* This structure contains the statistics common to all collectors.
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107 Particular collectors can extend this structure. */
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108 struct ggc_statistics
68
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109 {
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110 /* At present, we don't really gather any interesting statistics. */
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111 int unused;
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112 };
68
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113
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114 /* Used by the various collectors to gather and print statistics that
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115 do not depend on the collector in use. */
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116 extern void ggc_print_common_statistics (FILE *, ggc_statistics *);
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117
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118 #endif