X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fggc.h;h=57107ffdfc10ec1388f47345a29940a77e0f0b92;hb=576aff9d272cd8ebec2b93b10dcf5eae125e9667;hp=e1364a3a84ee20e8d10753d392089f8d4cd34007;hpb=78e9fc5073efe5a72073621400ad34aeec481bd5;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/ggc.h b/gcc/ggc.h index e1364a3a84e..57107ffdfc1 100644 --- a/gcc/ggc.h +++ b/gcc/ggc.h @@ -1,5 +1,6 @@ /* Garbage collection for the GNU compiler. - Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. + Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 + Free Software Foundation, Inc. This file is part of GCC. @@ -18,6 +19,10 @@ along with GCC; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#ifndef GCC_GGC_H +#define GCC_GGC_H +#include "statistics.h" + /* Symbols are marked with `ggc' for `gcc gc' so as not to interfere with an external gc library that might be linked in. */ @@ -30,38 +35,37 @@ extern const char digit_vector[]; /* "0" .. "9" */ machinery. */ /* The first parameter is a pointer to a pointer, the second a cookie. */ -typedef void (*gt_pointer_operator) PARAMS ((void *, void *)); +typedef void (*gt_pointer_operator) (void *, void *); #include "gtype-desc.h" /* One of these applies its third parameter (with cookie in the fourth parameter) to each pointer in the object pointed to by the first parameter, using the second parameter. */ -typedef void (*gt_note_pointers) - PARAMS ((void *, void *, gt_pointer_operator, void *)); +typedef void (*gt_note_pointers) (void *, void *, gt_pointer_operator, + void *); /* One of these is called before objects are re-ordered in memory. The first parameter is the original object, the second is the subobject that has had its pointers reordered, the third parameter can compute the new values of a pointer when given the cookie in the fourth parameter. */ -typedef void (*gt_handle_reorder) - PARAMS ((void *, void *, gt_pointer_operator, void *)); +typedef void (*gt_handle_reorder) (void *, void *, gt_pointer_operator, + void *); /* Used by the gt_pch_n_* routines. Register an object in the hash table. */ -extern int gt_pch_note_object - PARAMS ((void *, void *, gt_note_pointers)); +extern int gt_pch_note_object (void *, void *, gt_note_pointers, + enum gt_types_enum); -/* Used by the gt_pch_n_* routines. Register that an object has a reorder +/* Used by the gt_pch_n_* routines. Register that an object has a reorder function. */ -extern void gt_pch_note_reorder - PARAMS ((void *, void *, gt_handle_reorder)); +extern void gt_pch_note_reorder (void *, void *, gt_handle_reorder); /* Mark the object in the first parameter and anything it points to. */ -typedef void (*gt_pointer_walker) PARAMS ((void *)); +typedef void (*gt_pointer_walker) (void *); /* Structures for the easy way to mark roots. - In an array, terminated by having base == NULL.*/ + In an array, terminated by having base == NULL. */ struct ggc_root_tab { void *base; size_t nelt; @@ -84,7 +88,7 @@ struct ggc_cache_tab { size_t stride; gt_pointer_walker cb; gt_pointer_walker pchw; - int (*marked_p) PARAMS ((const void *)); + int (*marked_p) (const void *); }; #define LAST_GGC_CACHE_TAB { NULL, 0, 0, NULL, NULL, NULL } /* Pointers to arrays of ggc_cache_tab, terminated by NULL. */ @@ -104,115 +108,143 @@ extern const struct ggc_cache_tab * const gt_ggc_cache_rtab[]; /* 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 + returns zero if the object was not previously marked; nonzero if the object was already marked, or if, for any other reason, pointers in this data structure should not be traversed. */ -extern int ggc_set_mark PARAMS ((const void *)); +extern int ggc_set_mark (const void *); /* 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 *)); +extern int ggc_marked_p (const void *); /* Mark the entries in the string pool. */ -extern void ggc_mark_stringpool PARAMS ((void)); +extern void ggc_mark_stringpool (void); /* Call ggc_set_mark on all the roots. */ -extern void ggc_mark_roots PARAMS ((void)); +extern void ggc_mark_roots (void); /* Save and restore the string pool entries for PCH. */ -extern void gt_pch_save_stringpool PARAMS ((void)); -extern void gt_pch_fixup_stringpool PARAMS ((void)); -extern void gt_pch_restore_stringpool PARAMS ((void)); +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 PARAMS ((void *, void *, - gt_pointer_operator, void *)); -extern void gt_pch_n_S PARAMS ((const void *)); -extern void gt_ggc_m_S PARAMS ((void *)); +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 (void *); -/* Initialise the string pool. */ -extern void init_stringpool PARAMS ((void)); +/* 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 PARAMS ((void)); +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 *); /* 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 PARAMS ((void)); +extern void ggc_push_context (void); /* Finish a GC context. Any uncollected memory in the new context will be merged with the old context. */ -extern void ggc_pop_context PARAMS ((void)); +extern void ggc_pop_context (void); struct ggc_pch_data; /* Return a new ggc_pch_data structure. */ -extern struct ggc_pch_data *init_ggc_pch PARAMS ((void)); +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. */ -extern void ggc_pch_count_object PARAMS ((struct ggc_pch_data *, - void *, size_t)); + 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 +/* 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 PARAMS ((struct ggc_pch_data *)); +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 PARAMS ((struct ggc_pch_data *, - void *)); +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. */ -extern char *ggc_pch_alloc_object PARAMS ((struct ggc_pch_data *, - void *, size_t)); + 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); /* Write out any initial information required. */ -extern void ggc_pch_prepare_write PARAMS ((struct ggc_pch_data *, - FILE *)); -/* Write out this object, including any padding. */ -extern void ggc_pch_write_object PARAMS ((struct ggc_pch_data *, - FILE *, void *, void *, - size_t)); +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 PARAMS ((struct ggc_pch_data *, - FILE *)); +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 PARAMS ((FILE *, void *)); +extern void ggc_pch_read (FILE *, void *); /* Allocation. */ +/* When set, ggc_collect will do collection. */ +extern bool ggc_force_collect; + /* The internal primitive. */ -extern void *ggc_alloc PARAMS ((size_t)); +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 PARAMS ((size_t)); +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 PARAMS ((void *, size_t)); +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 PARAMS ((size_t, size_t)); - -#define ggc_alloc_rtx(NSLOTS) \ - ((struct rtx_def *) ggc_alloc (sizeof (struct rtx_def) \ - + ((NSLOTS) - 1) * sizeof (rtunion))) - -#define ggc_alloc_rtvec(NELT) \ - ((struct rtvec_def *) ggc_alloc (sizeof (struct rtvec_def) \ - + ((NELT) - 1) * sizeof (rtx))) - -#define ggc_alloc_tree(LENGTH) ((union tree_node *) ggc_alloc (LENGTH)) +extern void *ggc_calloc (size_t, size_t); +/* 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 (void); + +/* 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_NEWVAR(T, S) ((T *) ggc_alloc ((S))) +#define GGC_CNEWVAR(T, S) ((T *) ggc_alloc_cleared ((S))) + +#define ggc_alloc_rtvec(NELT) \ + ((rtvec) ggc_alloc_zone (sizeof (struct rtvec_def) + ((NELT) - 1) \ + * sizeof (rtx), &rtl_zone)) + +#define ggc_alloc_tree(LENGTH) ((tree) ggc_alloc_zone (LENGTH, &tree_zone)) #define htab_create_ggc(SIZE, HASH, EQ, DEL) \ htab_create_alloc (SIZE, HASH, EQ, DEL, ggc_calloc, NULL) @@ -221,30 +253,29 @@ extern void *ggc_calloc PARAMS ((size_t, size_t)); splay_tree_new_with_allocator (COMPARE, NULL, NULL, \ &ggc_splay_alloc, &ggc_splay_dont_free, \ NULL) -extern PTR ggc_splay_alloc PARAMS ((int, void *)); -extern void ggc_splay_dont_free PARAMS ((void *, void *)); +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 PARAMS ((const char *contents, - int length)); +extern const char *ggc_alloc_string (const char *contents, int length); /* Make a copy of S, in GC-able memory. */ #define ggc_strdup(S) ggc_alloc_string((S), -1) /* Invoke the collector. Garbage collection occurs only when this function is called, not during allocations. */ -extern void ggc_collect PARAMS ((void)); +extern void ggc_collect (void); /* Return the number of bytes allocated at the indicated address. */ -extern size_t ggc_get_size PARAMS ((const void *)); +extern size_t ggc_get_size (const void *); /* Write out all GCed objects to F. */ -extern void gt_pch_save PARAMS ((FILE *f)); +extern void gt_pch_save (FILE *f); /* Read objects previously saved with gt_pch_save from F. */ -extern void gt_pch_restore PARAMS ((FILE *f)); +extern void gt_pch_restore (FILE *f); /* Statistics. */ @@ -258,13 +289,36 @@ typedef struct 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 PARAMS ((FILE *, ggc_statistics *)); +extern void ggc_print_common_statistics (FILE *, ggc_statistics *); /* Print allocation statistics. */ -extern void ggc_print_statistics PARAMS ((void)); -extern void stringpool_statistics PARAMS ((void)); +extern void ggc_print_statistics (void); +extern void stringpool_statistics (void); /* Heuristics. */ -extern int ggc_min_expand_heuristic PARAMS ((void)); -extern int ggc_min_heapsize_heuristic PARAMS ((void)); -extern void init_ggc_heuristics PARAMS ((void)); +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) + +/* 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; + +/* 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 + +# define ggc_alloc_zone(s, z) ggc_alloc (s) +# define ggc_alloc_zone_pass_stat(s, z) ggc_alloc_stat (s PASS_MEM_STAT) + +#endif + +#endif