X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fggc.h;h=74c36394d1c13f08990718d811a9b0b698a3168e;hb=95ad1d1e0b24211942c5538b9152b0df03b54eb8;hp=3a8b57e4aba9b915b4d6a2efd85f8ee7def97198;hpb=867d54fa17b07a131758adc8b0ce1e81d263fe86;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/ggc.h b/gcc/ggc.h index 3a8b57e4aba..74c36394d1c 100644 --- a/gcc/ggc.h +++ b/gcc/ggc.h @@ -1,12 +1,12 @@ /* Garbage collection for the GNU compiler. - Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 + Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008 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 +15,12 @@ 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 +53,8 @@ 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 +120,9 @@ 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 +137,7 @@ 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); @@ -153,14 +157,6 @@ 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 (void); - -/* Finish a GC context. Any uncollected memory in the new context - will be merged with the old context. */ -extern void ggc_pop_context (void); - struct ggc_pch_data; /* Return a new ggc_pch_data structure. */ @@ -168,9 +164,10 @@ 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. The last argument should be true + 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); +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. */ @@ -182,8 +179,9 @@ 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. - 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); + 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 *); @@ -202,36 +200,53 @@ extern void ggc_pch_read (FILE *, void *); /* Allocation. */ -/* 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; +/* 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); -/* 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); +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); -/* Like ggc_alloc_zone, but allocates cleared memory. */ -extern void *ggc_alloc_cleared_zone (size_t, struct alloc_zone *); +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); - -#define ggc_alloc_rtx(CODE) \ - ((rtx) ggc_alloc_typed (gt_ggc_e_7rtx_def, RTX_SIZE (CODE))) - -#define ggc_alloc_rtvec(NELT) \ - ((rtvec) ggc_alloc_typed (gt_ggc_e_9rtvec_def, sizeof (struct rtvec_def) \ - + ((NELT) - 1) * sizeof (rtx))) - -#define ggc_alloc_tree(LENGTH) ((tree) ggc_alloc_zone (LENGTH, tree_zone)) +/* 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))) + +#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) @@ -287,4 +302,25 @@ 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