/* Garbage collection for the GNU compiler.
- Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007,
- 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 1998-2014 Free Software Foundation, Inc.
This file is part of GCC.
/* 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))
/* Internal functions and data structures used by the GTY
- machinery. */
-
-/* The first parameter is a pointer to a pointer, the second a cookie. */
-typedef void (*gt_pointer_operator) (void *, void *);
+ machinery, including the generated gt*.[hc] files. */
#include "gtype-desc.h"
void *);
/* Used by the gt_pch_n_* routines. Register an object in the hash table. */
-extern int gt_pch_note_object (void *, void *, gt_note_pointers,
- enum gt_types_enum);
+extern int gt_pch_note_object (void *, void *, gt_note_pointers);
/* Used by the gt_pch_n_* routines. Register that an object has a reorder
function. */
static objects, stack variables, or memory allocated with malloc. */
extern int ggc_marked_p (const void *);
-/* 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);
-
-/* Call ggc_set_mark on all the roots. */
-
-extern void ggc_mark_roots (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 *);
extern void gt_pch_n_S (const void *);
extern void gt_ggc_m_S (const void *);
+/* End of GTY machinery API. */
+
/* Initialize the string pool. */
extern void init_stringpool (void);
-/* A GC implementation must provide these functions. They are internal
- to the GC system. */
-
-/* Forward declare the zone structure. Only ggc_zone implements this. */
-struct alloc_zone;
-
/* Initialize the garbage collector. */
extern void init_ggc (void);
-/* Start a new GGC zone. */
-extern struct alloc_zone *new_ggc_zone (const char *);
-
-/* Free a complete GGC zone, destroying everything in it. */
-extern void destroy_ggc_zone (struct alloc_zone *);
-
-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,
- enum gt_types_enum);
-
-/* 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 *);
+/* When true, identifier nodes are considered as GC roots. When
+ false, identifier nodes are treated like any other GC-allocated
+ object, and the identifier hash table is treated as a weak
+ hash. */
+extern bool ggc_protect_identifiers;
-/* 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 *);
+/* Write out all GCed objects to F. */
+extern void gt_pch_save (FILE *f);
-/* 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,
- enum gt_types_enum);
+\f
+/* Allocation. */
-/* 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 *);
+/* The internal primitive. */
+extern void *ggc_internal_alloc (size_t, void (*)(void *), size_t,
+ size_t CXX_MEM_STAT_INFO)
+ ATTRIBUTE_MALLOC;
-/* 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 *);
+ static inline
+ void *
+ ggc_internal_alloc (size_t s CXX_MEM_STAT_INFO)
+{
+ return ggc_internal_alloc (s, NULL, 0, 1 PASS_MEM_STAT);
+}
-\f
-/* Allocation. */
+extern size_t ggc_round_alloc_size (size_t requested_size);
-/* When set, ggc_collect will do collection. */
-extern bool ggc_force_collect;
+/* Allocates cleared memory. */
+extern void *ggc_internal_cleared_alloc (size_t, void (*)(void *),
+ size_t, size_t
+ CXX_MEM_STAT_INFO) ATTRIBUTE_MALLOC;
-/* When true, identifier nodes are considered as GC roots. When
- false, identifier nodes are treated like any other GC-allocated
- object, and the identifier hash table is treated as a weak
- hash. */
-extern bool ggc_protect_identifiers;
+static inline
+void *
+ggc_internal_cleared_alloc (size_t s CXX_MEM_STAT_INFO)
+{
+ return ggc_internal_cleared_alloc (s, NULL, 0, 1 PASS_MEM_STAT);
+}
-/* The internal primitive. */
-extern void *ggc_alloc_stat (size_t MEM_STAT_DECL);
-#define ggc_alloc(s) ggc_alloc_stat (s MEM_STAT_INFO)
-/* Allocate an object of the specified type and size. */
-extern void *ggc_alloc_typed_stat (enum gt_types_enum, size_t MEM_STAT_DECL);
-#define ggc_alloc_typed(s,z) ggc_alloc_typed_stat (s,z MEM_STAT_INFO)
-/* Like ggc_alloc, but allocates cleared memory. */
-extern void *ggc_alloc_cleared_stat (size_t MEM_STAT_DECL);
-#define ggc_alloc_cleared(s) ggc_alloc_cleared_stat (s MEM_STAT_INFO)
/* Resize a block. */
-extern void *ggc_realloc_stat (void *, size_t MEM_STAT_DECL);
-#define ggc_realloc(s,z) ggc_realloc_stat (s,z MEM_STAT_INFO)
-/* Like ggc_alloc_cleared, but performs a multiplication. */
-extern void *ggc_calloc (size_t, size_t);
+extern void *ggc_realloc (void *, size_t CXX_MEM_STAT_INFO);
+
/* Free a block. To be used when known for certain it's not reachable. */
extern void ggc_free (void *);
-
-extern void ggc_record_overhead (size_t, size_t, void * MEM_STAT_DECL);
-extern void ggc_free_overhead (void *);
-extern void ggc_prune_overhead_list (void);
extern void dump_ggc_loc_statistics (bool);
-/* Type-safe, C++-friendly versions of ggc_alloc() and gcc_calloc(). */
-#define GGC_NEW(T) ((T *) ggc_alloc (sizeof (T)))
-#define GGC_CNEW(T) ((T *) ggc_alloc_cleared (sizeof (T)))
-#define GGC_NEWVEC(T, N) ((T *) ggc_alloc ((N) * sizeof(T)))
-#define GGC_CNEWVEC(T, N) ((T *) ggc_alloc_cleared ((N) * sizeof(T)))
-#define GGC_RESIZEVEC(T, P, N) ((T *) ggc_realloc ((P), (N) * sizeof (T)))
-#define GGC_NEWVAR(T, S) ((T *) ggc_alloc ((S)))
-#define GGC_CNEWVAR(T, S) ((T *) ggc_alloc_cleared ((S)))
-#define GGC_RESIZEVAR(T, P, N) ((T *) ggc_realloc ((P), (N)))
+/* Reallocator. */
+#define GGC_RESIZEVEC(T, P, N) \
+ ((T *) ggc_realloc ((P), (N) * sizeof (T) MEM_STAT_INFO))
-#define ggc_alloc_rtvec(NELT) \
- ((rtvec) ggc_alloc_zone (sizeof (struct rtvec_def) + ((NELT) - 1) \
- * sizeof (rtx), &rtl_zone))
+template<typename T>
+void
+finalize (void *p)
+{
+ static_cast<T *> (p)->~T ();
+}
-#define ggc_alloc_tree(LENGTH) ((tree) ggc_alloc_zone (LENGTH, &tree_zone))
+template<typename T>
+static inline bool
+need_finalization_p ()
+{
+#if GCC_VERSION >= 4003
+ return !__has_trivial_destructor (T);
+#else
+ return true;
+#endif
+}
+
+template<typename T>
+static inline T *
+ggc_alloc (ALONE_CXX_MEM_STAT_INFO)
+{
+ if (need_finalization_p<T> ())
+ return static_cast<T *> (ggc_internal_alloc (sizeof (T), finalize<T>, 0, 1
+ PASS_MEM_STAT));
+ else
+ return static_cast<T *> (ggc_internal_alloc (sizeof (T), NULL, 0, 1
+ PASS_MEM_STAT));
+}
+
+template<typename T>
+static inline T *
+ggc_cleared_alloc (ALONE_CXX_MEM_STAT_INFO)
+{
+ if (need_finalization_p<T> ())
+ return static_cast<T *> (ggc_internal_cleared_alloc (sizeof (T),
+ finalize<T>, 0, 1
+ PASS_MEM_STAT));
+ else
+ return static_cast<T *> (ggc_internal_cleared_alloc (sizeof (T), NULL, 0, 1
+ PASS_MEM_STAT));
+}
+
+template<typename T>
+static inline T *
+ggc_vec_alloc (size_t c CXX_MEM_STAT_INFO)
+{
+ if (need_finalization_p<T> ())
+ return static_cast<T *> (ggc_internal_alloc (c * sizeof (T), finalize<T>,
+ sizeof (T), c PASS_MEM_STAT));
+ else
+ return static_cast<T *> (ggc_internal_alloc (c * sizeof (T), NULL, 0, 0
+ PASS_MEM_STAT));
+}
+
+template<typename T>
+static inline T *
+ggc_cleared_vec_alloc (size_t c CXX_MEM_STAT_INFO)
+{
+ if (need_finalization_p<T> ())
+ return static_cast<T *> (ggc_internal_cleared_alloc (c * sizeof (T),
+ finalize<T>,
+ sizeof (T), c
+ PASS_MEM_STAT));
+ else
+ return static_cast<T *> (ggc_internal_cleared_alloc (c * sizeof (T), NULL,
+ 0, 0 PASS_MEM_STAT));
+}
+
+static inline void *
+ggc_alloc_atomic (size_t s CXX_MEM_STAT_INFO)
+{
+ return ggc_internal_alloc (s PASS_MEM_STAT);
+}
+
+extern void *ggc_cleared_alloc_htab_ignore_args (size_t, size_t)
+ ATTRIBUTE_MALLOC;
+
+extern void *ggc_cleared_alloc_ptr_array_two_args (size_t, size_t)
+ ATTRIBUTE_MALLOC;
#define htab_create_ggc(SIZE, HASH, EQ, DEL) \
- htab_create_alloc (SIZE, HASH, EQ, DEL, ggc_calloc, ggc_free)
+ htab_create_typed_alloc (SIZE, HASH, EQ, DEL, \
+ ggc_cleared_alloc_htab_ignore_args, \
+ ggc_cleared_alloc_ptr_array_two_args, \
+ ggc_free)
+
+#define splay_tree_new_ggc(COMPARE, ALLOC_TREE, ALLOC_NODE) \
+ splay_tree_new_typed_alloc (COMPARE, NULL, NULL, &ALLOC_TREE, &ALLOC_NODE, \
+ &ggc_splay_dont_free, NULL)
+
+extern void *ggc_splay_alloc (int, void *)
+ ATTRIBUTE_MALLOC;
-#define splay_tree_new_ggc(COMPARE) \
- splay_tree_new_with_allocator (COMPARE, NULL, NULL, \
- &ggc_splay_alloc, &ggc_splay_dont_free, \
- NULL)
-extern void *ggc_splay_alloc (int, void *);
extern void ggc_splay_dont_free (void *, void *);
/* 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. */
-extern const char *ggc_alloc_string (const char *contents, int length);
+extern const char *ggc_alloc_string (const char *contents, int length
+ CXX_MEM_STAT_INFO);
/* Make a copy of S, in GC-able memory. */
-#define ggc_strdup(S) ggc_alloc_string((S), -1)
+#define ggc_strdup(S) ggc_alloc_string ((S), -1 MEM_STAT_INFO)
/* Invoke the collector. Garbage collection occurs only when this
function is called, not during allocations. */
extern void ggc_collect (void);
+/* Assume that all GGC memory is reachable and grow the limits for next collection. */
+extern void ggc_grow (void);
+
/* Register an additional root table. This can be useful for some
- plugins. Does nothing if the passed pointer is null. */
+ plugins. Does nothing if the passed pointer is NULL. */
extern void ggc_register_root_tab (const struct ggc_root_tab *);
-/* Return the number of bytes allocated at the indicated address. */
-extern size_t ggc_get_size (const void *);
-
-/* Write out all GCed objects to F. */
-extern void gt_pch_save (FILE *f);
+/* Register an additional cache table. This can be useful for some
+ plugins. Does nothing if the passed pointer is NULL. */
+extern void ggc_register_cache_tab (const struct ggc_cache_tab *);
/* Read objects previously saved with gt_pch_save from F. */
extern void gt_pch_restore (FILE *f);
\f
/* Statistics. */
-/* This structure contains the statistics common to all collectors.
- Particular collectors can extend this structure. */
-typedef struct ggc_statistics
-{
- /* At present, we don't really gather any interesting statistics. */
- int unused;
-} ggc_statistics;
-
-/* 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 *);
-
/* Print allocation statistics. */
extern void ggc_print_statistics (void);
+
extern void stringpool_statistics (void);
/* Heuristics. */
-extern int ggc_min_expand_heuristic (void);
-extern int ggc_min_heapsize_heuristic (void);
extern void init_ggc_heuristics (void);
-/* Zone collection. */
-#if defined (GGC_ZONE) && !defined (GENERATOR_FILE)
+#define ggc_alloc_rtvec_sized(NELT) \
+ (rtvec_def *) ggc_internal_alloc (sizeof (struct rtvec_def) \
+ + ((NELT) - 1) * sizeof (rtx)) \
-/* For regular rtl allocations. */
-extern struct alloc_zone rtl_zone;
-/* For regular tree allocations. */
-extern struct alloc_zone tree_zone;
-/* For IDENTIFIER_NODE allocations. */
-extern struct alloc_zone tree_id_zone;
+/* Memory statistics passing versions of some allocators. Too few of them to
+ make gengtype produce them, so just define the needed ones here. */
+static inline struct rtx_def *
+ggc_alloc_rtx_def_stat (size_t s CXX_MEM_STAT_INFO)
+{
+ return (struct rtx_def *) ggc_internal_alloc (s PASS_MEM_STAT);
+}
-/* Allocate an object into the specified allocation zone. */
-extern void *ggc_alloc_zone_stat (size_t, struct alloc_zone * MEM_STAT_DECL);
-# define ggc_alloc_zone(s,z) ggc_alloc_zone_stat (s,z MEM_STAT_INFO)
-# define ggc_alloc_zone_pass_stat(s,z) ggc_alloc_zone_stat (s,z PASS_MEM_STAT)
-#else
+static inline union tree_node *
+ggc_alloc_tree_node_stat (size_t s CXX_MEM_STAT_INFO)
+{
+ return (union tree_node *) ggc_internal_alloc (s PASS_MEM_STAT);
+}
-# define ggc_alloc_zone(s, z) ggc_alloc (s)
-# define ggc_alloc_zone_pass_stat(s, z) ggc_alloc_stat (s PASS_MEM_STAT)
+static inline union tree_node *
+ggc_alloc_cleared_tree_node_stat (size_t s CXX_MEM_STAT_INFO)
+{
+ return (union tree_node *) ggc_internal_cleared_alloc (s PASS_MEM_STAT);
+}
-#endif
+static inline struct gimple_statement_base *
+ggc_alloc_cleared_gimple_statement_stat (size_t s CXX_MEM_STAT_INFO)
+{
+ return (struct gimple_statement_base *)
+ ggc_internal_cleared_alloc (s PASS_MEM_STAT);
+}
+
+static inline void
+gt_ggc_mx (const char *s)
+{
+ ggc_test_and_set_mark (const_cast<char *> (s));
+}
+
+static inline void
+gt_pch_nx (const char *)
+{
+}
+
+static inline void
+gt_ggc_mx (int)
+{
+}
+
+static inline void
+gt_pch_nx (int)
+{
+}
+
+static inline void
+gt_pch_nx (unsigned int)
+{
+}
#endif
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