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/* Garbage collection for the GNU compiler. Internal definitions
for ggc-*.c and stringpool.cc.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_GGC_INTERNAL_H
#define GCC_GGC_INTERNAL_H
/* Call ggc_set_mark on all the roots. */
extern void ggc_mark_roots (void);
/* Stringpool. */
/* Mark the entries in the string pool. */
extern void ggc_mark_stringpool (void);
/* Purge the entries in the string pool. */
extern void ggc_purge_stringpool (void);
/* Save and restore the string pool entries for PCH. */
extern void gt_pch_save_stringpool (void);
extern void gt_pch_fixup_stringpool (void);
extern void gt_pch_restore_stringpool (void);
/* PCH and GGC handling for strings, mostly trivial. */
extern void gt_pch_p_S (void *, void *, gt_pointer_operator, void *);
/* PCH. */
struct ggc_pch_data;
/* Return a new ggc_pch_data structure. */
extern struct ggc_pch_data *init_ggc_pch (void);
/* The second parameter and third parameters give the address and size
of an object. Update the ggc_pch_data structure with as much of
that information as is necessary. The bool argument should be true
if the object is a string. */
extern void ggc_pch_count_object (struct ggc_pch_data *, void *, size_t, bool);
/* Return the total size of the data to be written to hold all
the objects previously passed to ggc_pch_count_object. */
extern size_t ggc_pch_total_size (struct ggc_pch_data *);
/* The objects, when read, will most likely be at the address
in the second parameter. */
extern void ggc_pch_this_base (struct ggc_pch_data *, void *);
/* Assuming that the objects really do end up at the address
passed to ggc_pch_this_base, return the address of this object.
The bool argument should be true if the object is a string. */
extern char *ggc_pch_alloc_object (struct ggc_pch_data *, void *, size_t, bool);
/* Write out any initial information required. */
extern void ggc_pch_prepare_write (struct ggc_pch_data *, FILE *);
/* Write out this object, including any padding. The last argument should be
true if the object is a string. */
extern void ggc_pch_write_object (struct ggc_pch_data *, FILE *, void *,
void *, size_t, bool);
/* All objects have been written, write out any final information
required. */
extern void ggc_pch_finish (struct ggc_pch_data *, FILE *);
/* A PCH file has just been read in at the address specified second
parameter. Set up the GC implementation for the new objects. */
extern void ggc_pch_read (FILE *, void *);
/* Allocation and collection. */
extern void ggc_record_overhead (size_t, size_t, void * FINAL_MEM_STAT_DECL);
extern void ggc_free_overhead (void *);
extern void ggc_prune_overhead_list (void);
/* Return the number of bytes allocated at the indicated address. */
extern size_t ggc_get_size (const void *);
/* Statistics. */
/* This structure contains the statistics common to all collectors.
Particular collectors can extend this structure. */
struct ggc_statistics
{
/* At present, we don't really gather any interesting statistics. */
int unused;
};
/* Used by the various collectors to gather and print statistics that
do not depend on the collector in use. */
extern void ggc_print_common_statistics (FILE *, ggc_statistics *);
#endif
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