X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fggc.h;h=33b78f1b03d7c835e0e6fd87f430a8e5b64aba46;hp=0e2a63e940d44523e45090ac4d1a069176eff0b9;hb=a5fe80bda946d6ee8023587c37963d8b6612a730;hpb=e9efa03135334c079d640b06ff0e578f1c250cee diff --git a/gcc/ggc.h b/gcc/ggc.h index 0e2a63e940d..33b78f1b03d 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 - Free Software Foundation, Inc. + + Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, + 2008, 2009 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 @@ -15,12 +16,12 @@ 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. */ @@ -53,7 +54,8 @@ 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. */ @@ -119,6 +121,9 @@ 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); @@ -133,7 +138,7 @@ extern void gt_pch_restore_stringpool (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 *); +extern void gt_ggc_m_S (const void *); /* Initialize the string pool. */ extern void init_stringpool (void); @@ -141,16 +146,17 @@ 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 context. Memory allocated in previous contexts - will not be collected while the new context is active. */ -extern void ggc_push_context (void); +/* Start a new GGC zone. */ +extern struct alloc_zone *new_ggc_zone (const char *); -/* 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 complete GGC zone, destroying everything in it. */ +extern void destroy_ggc_zone (struct alloc_zone *); struct ggc_pch_data; @@ -159,8 +165,10 @@ 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 (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 the objects previously passed to ggc_pch_count_object. */ @@ -171,14 +179,17 @@ extern size_t ggc_pch_total_size (struct ggc_pch_data *); 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 (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 (struct ggc_pch_data *, FILE *); -/* Write out this object, including any padding. */ +/* 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); + 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 *); @@ -190,27 +201,56 @@ extern void ggc_pch_read (FILE *, void *); /* Allocation. */ +/* When set, ggc_collect will do collection. */ +extern bool ggc_force_collect; + +/* 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 internal primitive. */ -extern void *ggc_alloc (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 (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 (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 (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); -#define ggc_alloc_rtx(NSLOTS) \ - ((rtx) ggc_alloc (sizeof (struct rtx_def) \ - + ((NSLOTS) - 1) * sizeof (rtunion))) +extern void dump_ggc_loc_statistics (bool); -#define ggc_alloc_rtvec(NELT) \ - ((rtvec) ggc_alloc (sizeof (struct rtvec_def) \ - + ((NELT) - 1) * sizeof (rtx))) +/* 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))) -#define ggc_alloc_tree(LENGTH) ((tree) ggc_alloc (LENGTH)) +#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) + htab_create_alloc (SIZE, HASH, EQ, DEL, ggc_calloc, ggc_free) #define splay_tree_new_ggc(COMPARE) \ splay_tree_new_with_allocator (COMPARE, NULL, NULL, \ @@ -231,6 +271,14 @@ extern const char *ggc_alloc_string (const char *contents, int length); function is called, not during allocations. */ extern void ggc_collect (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 *); + +/* 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 *); + /* Return the number of bytes allocated at the indicated address. */ extern size_t ggc_get_size (const void *); @@ -259,8 +307,27 @@ 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) + +/* 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