/* Garbage collection for the GNU compiler.
- Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
- This file is part of GNU CC.
+This file is part of GNU CC.
- GNU CC 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 2, or (at your option)
- any later version.
+GNU CC 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 2, or (at your option) any
+later version.
- GNU CC 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.
+GNU CC 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 GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
#include "gansidecl.h"
+#include "varray.h"
/* Symbols are marked with `ggc' for `gcc gc' so as not to interfere with
an external gc library that might be linked in. */
struct expr_status;
struct hash_table;
struct label_node;
+struct rtx_def;
struct rtvec_def;
struct stmt_status;
union tree_node;
struct varasm_status;
-struct varray_head_tag;
/* Constants for general use. */
extern char *empty_string;
+/* Trees that have been marked, but whose children still need marking. */
+extern varray_type ggc_pending_trees;
+
/* Manipulate global roots that are needed between calls to gc. */
-void ggc_add_root PROTO ((void *base, int nelt, int size, void (*)(void *)));
-void ggc_add_rtx_root PROTO ((struct rtx_def **, int nelt));
-void ggc_add_tree_root PROTO ((union tree_node **, int nelt));
-void ggc_add_string_root PROTO ((char **, int nelt));
-void ggc_add_tree_varray_root PROTO ((struct varray_head_tag **, int nelt));
-void ggc_add_tree_hash_table_root PROTO ((struct hash_table **, int nelt));
-void ggc_del_root PROTO ((void *base));
+void ggc_add_root PARAMS ((void *base, int nelt, int size, void (*)(void *)));
+void ggc_add_rtx_root PARAMS ((struct rtx_def **, int nelt));
+void ggc_add_tree_root PARAMS ((union tree_node **, int nelt));
+void ggc_add_string_root PARAMS ((char **, int nelt));
+void ggc_add_rtx_varray_root PARAMS ((struct varray_head_tag **, int nelt));
+void ggc_add_tree_varray_root PARAMS ((struct varray_head_tag **, int nelt));
+void ggc_add_tree_hash_table_root PARAMS ((struct hash_table **, int nelt));
+void ggc_del_root PARAMS ((void *base));
/* Mark nodes from the gc_add_root callback. These functions follow
pointers to mark other objects too. */
-extern void ggc_mark_tree_varray PROTO ((struct varray_head_tag *));
-extern void ggc_mark_tree_hash_table PROTO ((struct hash_table *));
-extern void ggc_mark_roots PROTO((void));
+extern void ggc_mark_rtx_varray PARAMS ((struct varray_head_tag *));
+extern void ggc_mark_tree_varray PARAMS ((struct varray_head_tag *));
+extern void ggc_mark_tree_hash_table PARAMS ((struct hash_table *));
+extern void ggc_mark_roots PARAMS ((void));
-extern void ggc_mark_rtx_children PROTO ((struct rtx_def *));
-extern void ggc_mark_rtvec_children PROTO ((struct rtvec_def *));
-extern void ggc_mark_tree_children PROTO ((union tree_node *));
+extern void ggc_mark_rtx_children PARAMS ((struct rtx_def *));
+extern void ggc_mark_rtvec_children PARAMS ((struct rtvec_def *));
/* If EXPR is not NULL and previously unmarked, mark it and evaluate
to true. Otherwise evaluate to false. */
ggc_mark_rtx_children (r__); \
} while (0)
-#define ggc_mark_tree(EXPR) \
- do { \
- tree t__ = (EXPR); \
- if (ggc_test_and_set_mark (t__)) \
- ggc_mark_tree_children (t__); \
+#define ggc_mark_tree(EXPR) \
+ do { \
+ tree t__ = (EXPR); \
+ if (ggc_test_and_set_mark (t__)) \
+ VARRAY_PUSH_TREE (ggc_pending_trees, t__); \
} while (0)
#define ggc_mark_rtvec(EXPR) \
#define ggc_mark_string(EXPR) \
do { \
- char *s__ = (EXPR); \
+ const char *s__ = (EXPR); \
if (s__ != NULL) \
ggc_set_mark (s__); \
} while (0)
#define ggc_mark(EXPR) \
do { \
- void *a__ = (EXPR); \
+ const void *a__ = (EXPR); \
if (a__ != NULL) \
ggc_set_mark (a__); \
} while (0)
/* Mark, but only if it was allocated in collectable memory. */
-extern void ggc_mark_if_gcable PROTO ((void *));
+extern void ggc_mark_if_gcable PARAMS ((const void *));
/* A GC implementation must provide these functions. */
/* Initialize the garbage collector. */
-extern void init_ggc PROTO ((void));
+extern void init_ggc PARAMS ((void));
/* Start a new GGC context. Memory allocated in previous contexts
will not be collected while the new context is active. */
-extern void ggc_push_context PROTO ((void));
+extern void ggc_push_context PARAMS ((void));
/* Finish a GC context. Any uncollected memory in the new context
will be merged with the old context. */
-extern void ggc_pop_context PROTO ((void));
+extern void ggc_pop_context PARAMS ((void));
/* Allocation. */
/* The internal primitive. */
-void *ggc_alloc_obj PROTO ((size_t, int));
+void *ggc_alloc_obj PARAMS ((size_t, int));
#define ggc_alloc_rtx(NSLOTS) \
((struct rtx_def *) ggc_alloc_obj (sizeof (struct rtx_def) \
#define ggc_alloc(SIZE) ggc_alloc_obj((SIZE), 0)
-char *ggc_alloc_string PROTO ((const char *contents, int length));
+char *ggc_alloc_string PARAMS ((const char *contents, int length));
/* Invoke the collector. This is really just a hint, but in the case of
the simple collector, the only time it will happen. */
-void ggc_collect PROTO ((void));
+void ggc_collect PARAMS ((void));
/* Actually set the mark on a particular region of memory, but don't
follow pointers. This function is called by ggc_mark_*. It
returns zero if the object was not previously marked; non-zero if
the object was already marked, or if, for any other reason,
pointers in this data structure should not be traversed. */
-int ggc_set_mark PROTO ((void *));
+int ggc_set_mark PARAMS ((const void *));
/* Callbacks to the languages. */
/* This is the language's opportunity to mark nodes held through
the lang_specific hooks in the tree. */
-void lang_mark_tree PROTO ((union tree_node *));
+void lang_mark_tree PARAMS ((union tree_node *));
/* The FALSE_LABEL_STACK, declared in except.h, has
language-dependent semantics. Each front-end should define this
function appropriately. */
-void lang_mark_false_label_stack PROTO ((struct label_node *));
+void lang_mark_false_label_stack PARAMS ((struct label_node *));
/* Mark functions for various structs scattered about. */
-void mark_eh_status PROTO ((struct eh_status *));
-void mark_emit_status PROTO ((struct emit_status *));
-void mark_expr_status PROTO ((struct expr_status *));
-void mark_stmt_status PROTO ((struct stmt_status *));
-void mark_varasm_status PROTO ((struct varasm_status *));
-void mark_optab PROTO ((void *));
+void mark_eh_status PARAMS ((struct eh_status *));
+void mark_emit_status PARAMS ((struct emit_status *));
+void mark_expr_status PARAMS ((struct expr_status *));
+void mark_stmt_status PARAMS ((struct stmt_status *));
+void mark_varasm_status PARAMS ((struct varasm_status *));
+void mark_optab PARAMS ((void *));
/* Statistics. */
} ggc_statistics;
/* Return the number of bytes allocated at the indicated address. */
-size_t ggc_get_size PROTO ((void *));
+size_t ggc_get_size PARAMS ((const void *));
/* Used by the various collectors to gather and print statistics that
do not depend on the collector in use. */
-void ggc_print_statistics PROTO ((FILE *, ggc_statistics *));
+void ggc_print_statistics PARAMS ((FILE *, ggc_statistics *));
+
+/* Print allocation statistics. */
+extern void ggc_page_print_statistics PARAMS ((void));
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