X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fggc.h;h=7f2144c0f122266f2e4476d8e77d5d5d236dce07;hb=c3a945cde92094f4713cefdafe5c1bd3f07fbbcc;hp=f9d2ac21c317fd02e040f9d8a62d8d6cbd6f7e8a;hpb=934f2848e83866e4a608ce734a9deceb04e00de6;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/ggc.h b/gcc/ggc.h index f9d2ac21c31..7f2144c0f12 100644 --- a/gcc/ggc.h +++ b/gcc/ggc.h @@ -1,12 +1,13 @@ /* Garbage collection for the GNU compiler. - Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 - Free Software Foundation, Inc. + + Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, + 2008, 2009, 2010 Free Software Foundation, Inc. This file is part of GCC. GCC 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 +Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY @@ -15,23 +16,21 @@ 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 GCC; see the file COPYING. If not, write to the Free -Software Foundation, 59 Temple Place - Suite 330, Boston, MA -02111-1307, USA. */ +along with GCC; see the file COPYING3. If not see +. */ #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. */ /* 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. */ + machinery, including the generated gt*.[hc] files. */ /* The first parameter is a pointer to a pointer, the second a cookie. */ typedef void (*gt_pointer_operator) (void *, void *); @@ -53,7 +52,8 @@ 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 (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 function. */ @@ -116,177 +116,242 @@ extern int ggc_set_mark (const void *); 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); +/* PCH and GGC handling for strings, mostly trivial. */ +extern void gt_pch_n_S (const void *); +extern void gt_ggc_m_S (const void *); -/* Call ggc_set_mark on all the roots. */ +/* End of GTY machinery API. */ -extern void ggc_mark_roots (void); +struct alloc_zone; -/* Save and restore the string pool entries for PCH. */ +/* Initialize the string pool. */ +extern void init_stringpool (void); -extern void gt_pch_save_stringpool (void); -extern void gt_pch_fixup_stringpool (void); -extern void gt_pch_restore_stringpool (void); +/* Initialize the garbage collector. */ +extern void init_ggc (void); -/* PCH and GGC handling for strings, mostly trivial. */ +/* 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; -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 *); +/* Write out all GCed objects to F. */ +extern void gt_pch_save (FILE *f); -/* Initialize the string pool. */ -extern void init_stringpool (void); + +/* Allocation. */ -/* A GC implementation must provide these functions. They are internal - to the GC system. */ +/* The internal primitive. */ +extern void *ggc_internal_alloc_stat (size_t MEM_STAT_DECL); -/* Forward declare the zone structure. Only ggc_zone implements this. */ -struct alloc_zone; +#define ggc_internal_alloc(s) ggc_internal_alloc_stat (s MEM_STAT_INFO) -/* Initialize the garbage collector. */ -extern void init_ggc (void); +/* Allocate an object of the specified type and size. */ +extern void *ggc_alloc_typed_stat (enum gt_types_enum, size_t MEM_STAT_DECL); -/* Start a new GGC zone. */ -extern struct alloc_zone *new_ggc_zone (const char *); +#define ggc_alloc_typed(s, z) ggc_alloc_typed_stat (s, z MEM_STAT_INFO) -/* Free a complete GGC zone, destroying everything in it. */ -extern void destroy_ggc_zone (struct alloc_zone *); +/* Allocates cleared memory. */ +extern void *ggc_internal_cleared_alloc_stat (size_t MEM_STAT_DECL); -/* 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 (void); +/* Resize a block. */ +extern void *ggc_realloc_stat (void *, size_t MEM_STAT_DECL); -/* Finish a GC context. Any uncollected memory in the new context - will be merged with the old context. */ -extern void ggc_pop_context (void); +/* Free a block. To be used when known for certain it's not reachable. */ +extern void ggc_free (void *); -struct ggc_pch_data; +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); -/* Return a new ggc_pch_data structure. */ -extern struct ggc_pch_data *init_ggc_pch (void); +extern void dump_ggc_loc_statistics (bool); -/* 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 last argument should be true - if the object is a string. */ -extern void ggc_pch_count_object (struct ggc_pch_data *, void *, size_t, bool); +/* Reallocators. */ +#define GGC_RESIZEVEC(T, P, N) \ + ((T *) ggc_realloc_stat ((P), (N) * sizeof (T) MEM_STAT_INFO)) -/* 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 *); +#define GGC_RESIZEVAR(T, P, N) \ + ((T *) ggc_realloc_stat ((P), (N) MEM_STAT_INFO)) -/* 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 *); +static inline void * +ggc_internal_vec_alloc_stat (size_t s, size_t c MEM_STAT_DECL) +{ + return ggc_internal_alloc_stat (c * s PASS_MEM_STAT); +} -/* Assuming that the objects really do end up at the address - passed to ggc_pch_this_base, return the address of this object. - The last argument should be true if the object is a string. */ -extern char *ggc_pch_alloc_object (struct ggc_pch_data *, void *, size_t, bool); +static inline void * +ggc_internal_cleared_vec_alloc_stat (size_t s, size_t c MEM_STAT_DECL) +{ + return ggc_internal_cleared_alloc_stat (c * s PASS_MEM_STAT); +} -/* 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 *); +#define ggc_internal_cleared_vec_alloc(s, c) \ + (ggc_internal_cleared_vec_alloc_stat ((s), (c) MEM_STAT_INFO)) -/* 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_alloc_atomic_stat (size_t s MEM_STAT_DECL) +{ + return ggc_internal_alloc_stat (s PASS_MEM_STAT); +} - -/* Allocation. */ +#define ggc_alloc_atomic(S) (ggc_alloc_atomic_stat ((S) MEM_STAT_INFO)) -/* For single pass garbage. */ -extern struct alloc_zone *garbage_zone; -/* For regular rtl allocations. */ -extern struct alloc_zone *rtl_zone; -/* For regular tree allocations. */ -extern struct alloc_zone *tree_zone; +#define ggc_alloc_cleared_atomic(S) \ + (ggc_internal_cleared_alloc_stat ((S) MEM_STAT_INFO)) -/* The internal primitive. */ -extern void *ggc_alloc (size_t); -/* Allocate an object into the specified allocation zone. */ -extern void *ggc_alloc_zone (size_t, struct alloc_zone *); -/* Allocate an object of the specified type and size. */ -extern void *ggc_alloc_typed (enum gt_types_enum, size_t); -/* Like ggc_alloc, but allocates cleared memory. */ -extern void *ggc_alloc_cleared (size_t); -/* Like ggc_alloc_zone, but allocates cleared memory. */ -extern void *ggc_alloc_cleared_zone (size_t, struct alloc_zone *); -/* Resize a block. */ -extern void *ggc_realloc (void *, size_t); -/* Like ggc_alloc_cleared, but performs a multiplication. */ -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_cleared_alloc_htab_ignore_args (size_t, size_t); -#define ggc_alloc_rtx(CODE) \ - ((rtx) ggc_alloc_typed (gt_ggc_e_7rtx_def, RTX_SIZE (CODE))) +extern void * ggc_cleared_alloc_ptr_array_two_args (size_t, size_t); -#define ggc_alloc_rtvec(NELT) \ - ((rtvec) ggc_alloc_typed (gt_ggc_e_9rtvec_def, sizeof (struct rtvec_def) \ - + ((NELT) - 1) * sizeof (rtx))) +#define htab_create_ggc(SIZE, HASH, EQ, DEL) \ + htab_create_typed_alloc (SIZE, HASH, EQ, DEL, \ + ggc_cleared_alloc_htab_ignore_args, \ + ggc_cleared_alloc_ptr_array_two_args, \ + ggc_free) -#define ggc_alloc_tree(LENGTH) ((tree) ggc_alloc_zone (LENGTH, tree_zone)) +#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) -#define htab_create_ggc(SIZE, HASH, EQ, DEL) \ - htab_create_alloc (SIZE, HASH, EQ, DEL, ggc_calloc, NULL) +extern void *ggc_splay_alloc (enum gt_types_enum, int, void *); -#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_stat (const char *contents, int length + MEM_STAT_DECL); + +#define ggc_alloc_string(c, l) ggc_alloc_string_stat (c, l 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_stat ((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); -/* Return the number of bytes allocated at the indicated address. */ -extern size_t ggc_get_size (const void *); +/* Register an additional root table. This can be useful for some + plugins. Does nothing if the passed pointer is NULL. */ +extern void ggc_register_root_tab (const struct ggc_root_tab *); -/* 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); /* 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. */ + +/* 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; + +#define ggc_alloc_rtvec_sized(NELT) \ + (ggc_alloc_zone_vec_rtvec_def (sizeof (rtx), \ + sizeof (struct rtvec_def) + ((NELT) - 1), \ + &rtl_zone)) + +#if defined (GGC_ZONE) && !defined (GENERATOR_FILE) + +/* Allocate an object into the specified allocation zone. */ +extern void *ggc_internal_alloc_zone_stat (size_t, + struct alloc_zone * MEM_STAT_DECL); + +extern void *ggc_internal_cleared_alloc_zone_stat (size_t, + struct alloc_zone * MEM_STAT_DECL); + +static inline void * +ggc_internal_zone_alloc_stat (struct alloc_zone * z, size_t s MEM_STAT_DECL) +{ + return ggc_internal_alloc_zone_stat (s, z PASS_MEM_STAT); +} + +static inline void * +ggc_internal_zone_cleared_alloc_stat (struct alloc_zone * z, size_t s + MEM_STAT_DECL) +{ + return ggc_internal_cleared_alloc_zone_stat (s, z PASS_MEM_STAT); +} + +static inline void * +ggc_internal_zone_vec_alloc_stat (struct alloc_zone * z, size_t s, size_t n + MEM_STAT_DECL) +{ + return ggc_internal_alloc_zone_stat (s * n, z PASS_MEM_STAT); +} + + +#else + +static inline void * +ggc_internal_zone_alloc_stat (struct alloc_zone * z ATTRIBUTE_UNUSED, + size_t s MEM_STAT_DECL) +{ + return ggc_internal_alloc_stat (s PASS_MEM_STAT); +} + +static inline void * +ggc_internal_zone_cleared_alloc_stat (struct alloc_zone * z ATTRIBUTE_UNUSED, + size_t s MEM_STAT_DECL) +{ + return ggc_internal_cleared_alloc_stat (s PASS_MEM_STAT); +} + +static inline void * +ggc_internal_zone_vec_alloc_stat (struct alloc_zone * z ATTRIBUTE_UNUSED, + size_t s, size_t n MEM_STAT_DECL) +{ + return ggc_internal_vec_alloc_stat (s, n PASS_MEM_STAT); +} + +#endif + +/* 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_zone_rtx_def_stat (struct alloc_zone * z, size_t s MEM_STAT_DECL) +{ + return (struct rtx_def *) ggc_internal_zone_alloc_stat (z, s PASS_MEM_STAT); +} + +static inline union tree_node * +ggc_alloc_zone_tree_node_stat (struct alloc_zone * z, size_t s MEM_STAT_DECL) +{ + return (union tree_node *) ggc_internal_zone_alloc_stat (z, s PASS_MEM_STAT); +} + +static inline union tree_node * +ggc_alloc_zone_cleared_tree_node_stat (struct alloc_zone * z, size_t s + MEM_STAT_DECL) +{ + return (union tree_node *) + ggc_internal_zone_cleared_alloc_stat (z, s PASS_MEM_STAT); +} + +static inline union gimple_statement_d * +ggc_alloc_cleared_gimple_statement_d_stat (size_t s MEM_STAT_DECL) +{ + return (union gimple_statement_d *) + ggc_internal_cleared_alloc_stat (s PASS_MEM_STAT); +} + #endif