02111-1307, USA. */
#include "varray.h"
+#include "gtype-desc.h"
/* Symbols are marked with `ggc' for `gcc gc' so as not to interfere with
an external gc library that might be linked in. */
-/* These structures are defined in various headers throughout the
- compiler. However, rather than force everyone who includes this
- header to include all the headers in which they are declared, we
- just forward-declare them here. */
-struct eh_status;
-struct emit_status;
-struct expr_status;
-struct hash_table;
-struct label_node;
-struct rtx_def;
-struct rtvec_def;
-struct stmt_status;
-union tree_node;
-struct varasm_status;
-
/* Constants for general use. */
extern const char empty_string[]; /* empty string */
extern const char digit_vector[]; /* "0" .. "9" */
#define digit_string(d) (digit_vector + ((d) * 2))
-/* 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. */
+/* Manipulate global roots that are needed between calls to gc.
+ THIS ROUTINE IS OBSOLETE, do not use it for new code. */
extern void ggc_add_root PARAMS ((void *base, int nelt,
int size, void (*)(void *)));
-extern void ggc_add_rtx_root PARAMS ((struct rtx_def **, int nelt));
-extern void ggc_add_tree_root PARAMS ((union tree_node **,
- int nelt));
-extern void ggc_add_rtx_varray_root PARAMS ((struct varray_head_tag **,
- int nelt));
-extern void ggc_add_tree_varray_root PARAMS ((struct varray_head_tag **,
- int nelt));
-extern void ggc_add_tree_hash_table_root PARAMS ((struct hash_table **,
- int nelt));
-extern void ggc_del_root PARAMS ((void *base));
-
-/* Types used for mark test and marking functions, if specified, in call
- below. */
-typedef int (*ggc_htab_marked_p) PARAMS ((const void *));
-typedef void (*ggc_htab_mark) PARAMS ((const void *));
-
-/* Add a hash table to be scanned when all roots have been processed. We
- delete any entry in the table that has not been marked. The argument is
- really htab_t. */
-extern void ggc_add_deletable_htab PARAMS ((PTR, ggc_htab_marked_p,
- ggc_htab_mark));
-
-/* Mark nodes from the gc_add_root callback. These functions follow
- pointers to mark other objects too. */
-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 *));
+
+/* Structures for the easy way to mark roots.
+ In an array, terminated by having base == NULL.*/
+struct ggc_root_tab {
+ void *base;
+ size_t nelt;
+ size_t stride;
+ void (*cb) PARAMS ((void *));
+};
+#define LAST_GGC_ROOT_TAB { NULL, 0, 0, NULL }
+/* Pointers to arrays of ggc_root_tab, terminated by NULL. */
+extern const struct ggc_root_tab * const gt_ggc_rtab[];
+extern const struct ggc_root_tab * const gt_ggc_deletable_rtab[];
+
+/* Structure for hash table cache marking. */
+struct htab;
+struct ggc_cache_tab {
+ struct htab * *base;
+ size_t nelt;
+ size_t stride;
+ void (*cb) PARAMS ((void *));
+ int (*marked_p) PARAMS ((const void *));
+};
+#define LAST_GGC_CACHE_TAB { NULL, 0, 0, NULL, NULL }
+/* Pointers to arrays of ggc_cache_tab, terminated by NULL. */
+extern const struct ggc_cache_tab * const gt_ggc_cache_rtab[];
+
extern void ggc_mark_roots PARAMS ((void));
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. */
#define ggc_test_and_set_mark(EXPR) \
- ((EXPR) != NULL && ! ggc_set_mark (EXPR))
+ ((EXPR) != NULL && ((void *) (EXPR)) != (void *) 1 && ! ggc_set_mark (EXPR))
#define ggc_mark_rtx(EXPR) \
do { \
- rtx r__ = (EXPR); \
+ rtx const r__ = (EXPR); \
if (ggc_test_and_set_mark (r__)) \
ggc_mark_rtx_children (r__); \
} while (0)
-#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_nonnull_tree(EXPR) \
- do { \
- tree t__ = (EXPR); \
- if (! ggc_set_mark (t__)) \
- VARRAY_PUSH_TREE (ggc_pending_trees, t__); \
- } while (0)
-
-#define ggc_mark_rtvec(EXPR) \
- do { \
- rtvec v__ = (EXPR); \
- if (ggc_test_and_set_mark (v__)) \
- ggc_mark_rtvec_children (v__); \
- } while (0)
+#define ggc_mark_tree gt_ggc_m_tree_node
#define ggc_mark(EXPR) \
do { \
- const void *a__ = (EXPR); \
- if (a__ != NULL) \
+ const void *const a__ = (EXPR); \
+ if (a__ != NULL && a__ != (void *) 1) \
ggc_set_mark (a__); \
} while (0)
extern void *ggc_alloc PARAMS ((size_t));
/* Like ggc_alloc, but allocates cleared memory. */
extern void *ggc_alloc_cleared PARAMS ((size_t));
+/* Resize a block. */
+extern void *ggc_realloc PARAMS ((void *, size_t));
+/* Like ggc_alloc_cleared, but performs a multiplication. */
+extern void *ggc_calloc PARAMS ((size_t, size_t));
#define ggc_alloc_rtx(NSLOTS) \
((struct rtx_def *) ggc_alloc (sizeof (struct rtx_def) \
#define ggc_alloc_tree(LENGTH) ((union tree_node *) ggc_alloc (LENGTH))
+#define htab_create_ggc(SIZE, HASH, EQ, DEL) \
+ htab_create_alloc (SIZE, HASH, EQ, DEL, ggc_calloc, NULL)
+
/* Allocate a gc-able string, and fill it with LENGTH bytes from CONTENTS.
If LENGTH is -1, then CONTENTS is assumed to be a
null-terminated string and the memory sized accordingly. */
pointers in this data structure should not be traversed. */
extern int ggc_set_mark PARAMS ((const void *));
-/* Return 1 if P has been marked, zero otherwise.
+/* Return 1 if P has been marked, zero otherwise.
P must have been allocated by the GC allocator; it mustn't point to
static objects, stack variables, or memory allocated with malloc. */
extern int ggc_marked_p PARAMS ((const void *));
-/* Callbacks to the languages. */
-
-/* The FALSE_LABEL_STACK, declared in except.h, has language-dependent
- semantics. If a front-end needs to mark the false label stack, it
- should set this pointer to a non-NULL value. Otherwise, no marking
- will be done. */
-extern void (*lang_mark_false_label_stack) PARAMS ((struct label_node *));
-
-/* Mark functions for various structs scattered about. */
-
-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. */
/* This structure contains the statistics common to all collectors.
Particular collectors can extend this structure. */
-typedef struct ggc_statistics
+typedef struct ggc_statistics
{
/* The Ith element is the number of nodes allocated with code I. */
unsigned num_trees[256];
- /* The Ith element is the number of bytes allocated by nodes with
+ /* The Ith element is the number of bytes allocated by nodes with
code I. */
size_t size_trees[256];
/* The Ith element is the number of nodes allocated with code I. */
unsigned num_rtxs[256];
- /* The Ith element is the number of bytes allocated by nodes with
+ /* The Ith element is the number of bytes allocated by nodes with
code I. */
size_t size_rtxs[256];
/* The total size of the tree nodes allocated. */
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