37b31aefeb
* ggc.h (ggc_alloc): New function. (ggc_mark): Likewise. * ggc-simple.c (ggc_any): New structure. (ggc_status): Add anys. (n_anys_collected): New variable. (ggc_alloc): Define. (ggc_mark): Likewise. (ggc_collect): Collect the anys. From-SVN: r29222
105 lines
4.0 KiB
C
105 lines
4.0 KiB
C
/* Garbage collection for the GNU compiler.
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Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "gansidecl.h"
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/* Symbols are marked with `ggc' for `gcc gc' so as not to interfere with
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an external gc library that might be linked in. */
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/* Language-specific code defines this variable to be either one (if
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it wants garbage collection), or zero (if it does not). */
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extern int ggc_p;
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/* These structures are defined in various headers throughout the
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compiler. However, rather than force everyone who includes this
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header to include all the headers in which they are declared, we
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just forward-declare them here. */
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struct label_node;
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struct eh_status;
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struct emit_status;
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struct stmt_status;
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struct varasm_status;
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struct varray_head_tag;
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struct hash_table;
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/* Startup */
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extern void init_ggc PROTO ((void));
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/* Start a new GGC context. Memory allocated in previous contexts
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will not be collected while the new context is active. */
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extern void ggc_pop_context PROTO ((void));
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/* Finish a GC context. Any uncollected memory in the new context
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will be merged with the old context. */
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extern void ggc_push_context PROTO ((void));
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/* Allocation. */
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struct rtx_def *ggc_alloc_rtx PROTO ((int nslots));
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struct rtvec_def *ggc_alloc_rtvec PROTO ((int nelt));
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union tree_node *ggc_alloc_tree PROTO ((int length));
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char *ggc_alloc_string PROTO ((const char *contents, int length));
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void *ggc_alloc PROTO ((size_t));
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/* Invoke the collector. This is really just a hint, but in the case of
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the simple collector, the only time it will happen. */
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void ggc_collect PROTO ((void));
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/* Manipulate global roots that are needed between calls to gc. */
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void ggc_add_root PROTO ((void *base, int nelt, int size,
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void (*)(void *)));
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void ggc_add_rtx_root PROTO ((struct rtx_def **, int nelt));
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void ggc_add_tree_root PROTO ((union tree_node **, int nelt));
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void ggc_add_tree_varray_root PROTO ((struct varray_head_tag **, int nelt));
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void ggc_add_tree_hash_table_root PROTO ((struct hash_table **, int nelt));
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void ggc_del_root PROTO ((void *base));
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/* Mark nodes from the gc_add_root callback. */
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void ggc_mark_rtx PROTO ((struct rtx_def *));
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void ggc_mark_rtvec PROTO ((struct rtvec_def *));
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void ggc_mark_tree PROTO ((union tree_node *));
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void ggc_mark_tree_varray PROTO ((struct varray_head_tag *));
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void ggc_mark_tree_hash_table PROTO ((struct hash_table *));
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void ggc_mark_string PROTO ((char *));
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void ggc_mark PROTO ((void *));
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/* Callbacks to the languages. */
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/* This is the language's opportunity to mark nodes held through
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the lang_specific hooks in the tree. */
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void lang_mark_tree PROTO ((union tree_node *));
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/* And similarly to free that data when the tree node is released. */
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void lang_cleanup_tree PROTO ((union tree_node *));
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/* The FALSE_LABEL_STACK, declared in except.h, has
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language-dependent semantics. Each front-end should define this
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function appropriately. */
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void lang_mark_false_label_stack PROTO ((struct label_node *));
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/* Mark functions for various structs scattered about. */
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void mark_eh_state PROTO ((struct eh_status *));
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void mark_stmt_state PROTO ((struct stmt_status *));
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void mark_emit_state PROTO ((struct emit_status *));
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void mark_varasm_state PROTO ((struct varasm_status *));
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void mark_optab PROTO ((void *));
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