119 lines
3.9 KiB
C
119 lines
3.9 KiB
C
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/* Garbage collection for the GNU compiler. Internal definitions
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for ggc-*.c and stringpool.c.
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Copyright (C) 2009-2019 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_GGC_INTERNAL_H
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#define GCC_GGC_INTERNAL_H
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/* Call ggc_set_mark on all the roots. */
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extern void ggc_mark_roots (void);
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/* Stringpool. */
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/* Mark the entries in the string pool. */
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extern void ggc_mark_stringpool (void);
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/* Purge the entries in the string pool. */
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extern void ggc_purge_stringpool (void);
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/* Save and restore the string pool entries for PCH. */
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extern void gt_pch_save_stringpool (void);
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extern void gt_pch_fixup_stringpool (void);
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extern void gt_pch_restore_stringpool (void);
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/* PCH and GGC handling for strings, mostly trivial. */
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extern void gt_pch_p_S (void *, void *, gt_pointer_operator, void *);
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/* PCH. */
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struct ggc_pch_data;
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/* Return a new ggc_pch_data structure. */
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extern struct ggc_pch_data *init_ggc_pch (void);
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/* The second parameter and third parameters give the address and size
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of an object. Update the ggc_pch_data structure with as much of
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that information as is necessary. The bool argument should be true
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if the object is a string. */
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extern void ggc_pch_count_object (struct ggc_pch_data *, void *, size_t, bool);
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/* Return the total size of the data to be written to hold all
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the objects previously passed to ggc_pch_count_object. */
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extern size_t ggc_pch_total_size (struct ggc_pch_data *);
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/* The objects, when read, will most likely be at the address
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in the second parameter. */
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extern void ggc_pch_this_base (struct ggc_pch_data *, void *);
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/* Assuming that the objects really do end up at the address
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passed to ggc_pch_this_base, return the address of this object.
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The bool argument should be true if the object is a string. */
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extern char *ggc_pch_alloc_object (struct ggc_pch_data *, void *, size_t, bool);
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/* Write out any initial information required. */
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extern void ggc_pch_prepare_write (struct ggc_pch_data *, FILE *);
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/* Write out this object, including any padding. The last argument should be
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true if the object is a string. */
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extern void ggc_pch_write_object (struct ggc_pch_data *, FILE *, void *,
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void *, size_t, bool);
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/* All objects have been written, write out any final information
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required. */
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extern void ggc_pch_finish (struct ggc_pch_data *, FILE *);
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/* A PCH file has just been read in at the address specified second
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parameter. Set up the GC implementation for the new objects. */
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extern void ggc_pch_read (FILE *, void *);
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/* Allocation and collection. */
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/* When set, ggc_collect will do collection. */
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extern bool ggc_force_collect;
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extern void ggc_record_overhead (size_t, size_t, void * FINAL_MEM_STAT_DECL);
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extern void ggc_free_overhead (void *);
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extern void ggc_prune_overhead_list (void);
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/* Return the number of bytes allocated at the indicated address. */
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extern size_t ggc_get_size (const void *);
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/* Statistics. */
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/* This structure contains the statistics common to all collectors.
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Particular collectors can extend this structure. */
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struct ggc_statistics
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{
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/* At present, we don't really gather any interesting statistics. */
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int unused;
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};
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/* Used by the various collectors to gather and print statistics that
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do not depend on the collector in use. */
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extern void ggc_print_common_statistics (FILE *, ggc_statistics *);
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#endif
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