c-common.c (allow_pch): Remove.
2003-07-29 Geoffrey Keating <geoffk@apple.com> * c-common.c (allow_pch): Remove. * c-common.h (allow_pch): Remove. (c_common_no_more_pch): Declare. * c-lex.c (c_lex): Call c_common_no_more_pch when appropriate. * c-pch.c: Include hosthooks.h. (c_common_valid_pch): Don't check allow_pch. (c_common_read_pch): Clear valid_pch to prevent reading PCH files. (c_common_no_more_pch): New. * ggc-common.c: Include hosthooks.h. (gt_pch_save): Call gt_pch_get_address. (gt_pch_restore): Call gt_pch_use_address. * hooks.c (hook_voidp_size_t_null): New. (hook_bool_voidp_size_t_false): New. * hooks.h (hook_voidp_size_t_null): New. (hook_bool_voidp_size_t_false): New. * hosthooks-def.h (HOST_HOOKS_GT_PCH_GET_ADDRESS): New. (HOST_HOOKS_GT_PCH_USE_ADDRESS): New. (HOST_HOOKS_INITIALIZER): Add HOST_HOOKS_GT_PCH_GET_ADDRESS, HOST_HOOKS_GT_PCH_USE_ADDRESS. * hosthooks.h (struct host_hooks): Add gt_pch_get_address, gt_pch_use_address. * doc/hostconfig.texi (Host Common): Document HOST_HOOKS_GT_PCH_GET_ADDRESS, HOST_HOOKS_GT_PCH_USE_ADDRESS. * Makefile.in (c-pch.o): Depend on hosthooks.h. (ggc-common.o): Likewise. * config/rs6000/host-darwin.c (HOST_HOOKS_GT_PCH_GET_ADDRESS): Define. (HOST_HOOKS_GT_PCH_USE_ADDRESS): Define. (pch_address_space): New. (darwin_rs6000_gt_pch_get_address): New. (darwin_rs6000_gt_pch_use_address): New. Index: cp/ChangeLog 2003-07-29 Geoffrey Keating <geoffk@apple.com> * parser.c (cp_lexer_new_main): Use c_common_no_more_pch instead of setting valid_pch by hand. From-SVN: r69944
This commit is contained in:
Geoffrey Keating
Geoffrey Keating
parent
8f9b40094d
commit
18c8152070
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@ -1,3 +1,37 @@
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2003-07-29 Geoffrey Keating <geoffk@apple.com>
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* c-common.c (allow_pch): Remove.
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* c-common.h (allow_pch): Remove.
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(c_common_no_more_pch): Declare.
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* c-lex.c (c_lex): Call c_common_no_more_pch when appropriate.
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* c-pch.c: Include hosthooks.h.
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(c_common_valid_pch): Don't check allow_pch.
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(c_common_read_pch): Clear valid_pch to prevent reading PCH files.
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(c_common_no_more_pch): New.
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* ggc-common.c: Include hosthooks.h.
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(gt_pch_save): Call gt_pch_get_address.
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(gt_pch_restore): Call gt_pch_use_address.
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* hooks.c (hook_voidp_size_t_null): New.
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(hook_bool_voidp_size_t_false): New.
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* hooks.h (hook_voidp_size_t_null): New.
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(hook_bool_voidp_size_t_false): New.
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* hosthooks-def.h (HOST_HOOKS_GT_PCH_GET_ADDRESS): New.
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(HOST_HOOKS_GT_PCH_USE_ADDRESS): New.
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(HOST_HOOKS_INITIALIZER): Add HOST_HOOKS_GT_PCH_GET_ADDRESS,
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HOST_HOOKS_GT_PCH_USE_ADDRESS.
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* hosthooks.h (struct host_hooks): Add gt_pch_get_address,
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gt_pch_use_address.
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* doc/hostconfig.texi (Host Common): Document
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HOST_HOOKS_GT_PCH_GET_ADDRESS, HOST_HOOKS_GT_PCH_USE_ADDRESS.
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* Makefile.in (c-pch.o): Depend on hosthooks.h.
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(ggc-common.o): Likewise.
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* config/rs6000/host-darwin.c (HOST_HOOKS_GT_PCH_GET_ADDRESS): Define.
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(HOST_HOOKS_GT_PCH_USE_ADDRESS): Define.
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(pch_address_space): New.
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(darwin_rs6000_gt_pch_get_address): New.
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(darwin_rs6000_gt_pch_use_address): New.
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2003-07-29 Neil Booth <neil@daikokuya.co.uk>
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* Makefile.in (LIBCPP_DEPS): Add HASHTAB_H.
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@ -1351,8 +1351,8 @@ c-dump.o : c-dump.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
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$(C_TREE_H) tree-dump.h
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c-pch.o : c-pch.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(CPPLIB_H) $(TREE_H) \
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$(C_COMMON_H) output.h toplev.h c-pragma.h $(GGC_H) debug.h langhooks.h \
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flags.h
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$(C_COMMON_H) output.h toplev.h c-pragma.h $(GGC_H) debug.h \
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langhooks.h flags.h hosthooks.h
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# Language-independent files.
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@ -1433,7 +1433,7 @@ gtype-desc.o: gtype-desc.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) varray.h
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ssa.h cselib.h insn-addr.h
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ggc-common.o: ggc-common.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(GGC_H) \
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$(HASHTAB_H) toplev.h $(PARAMS_H)
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$(HASHTAB_H) toplev.h $(PARAMS_H) hosthooks.h
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ggc-simple.o: ggc-simple.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) $(TREE_H) \
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flags.h $(GGC_H) varray.h $(TIMEVAR_H) $(TM_P_H) $(PARAMS_H)
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@ -187,10 +187,6 @@ tree c_global_trees[CTI_MAX];
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langhook should take care of initialization of this array. */
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bool statement_code_p[MAX_TREE_CODES];
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/* Nonzero if we can read a PCH file now. */
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int allow_pch = 1;
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/* Switches common to the C front ends. */
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@ -363,10 +363,6 @@ struct c_lang_decl GTY(()) {
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heuristics regarding optimization. */
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#define DECL_ESTIMATED_INSNS(NODE) \
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(FUNCTION_DECL_CHECK (NODE)->decl.u1.i)
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/* Nonzero if we can read a PCH file now. */
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extern int allow_pch;
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/* Switches common to the C front ends. */
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@ -1314,6 +1310,7 @@ extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
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extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
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const char *orig);
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extern void c_common_write_pch (void);
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extern void c_common_no_more_pch (void);
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extern void builtin_define_with_value (const char *, const char *, int);
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extern void c_stddef_cpp_builtins (void);
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extern void fe_file_change (const struct line_map *);
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@ -320,6 +320,7 @@ c_lex (tree *value)
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{
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const cpp_token *tok;
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location_t atloc;
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static bool no_more_pch;
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retry:
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tok = get_nonpadding_token ();
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@ -421,6 +422,12 @@ c_lex (tree *value)
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break;
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}
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if (! no_more_pch)
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{
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no_more_pch = true;
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c_common_no_more_pch ();
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}
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return tok->type;
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}
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18
gcc/c-pch.c
18
gcc/c-pch.c
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@ -31,6 +31,7 @@ Boston, MA 02111-1307, USA. */
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#include "c-pragma.h"
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#include "ggc.h"
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#include "langhooks.h"
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#include "hosthooks.h"
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struct c_pch_validity
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{
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@ -164,9 +165,6 @@ c_common_valid_pch (cpp_reader *pfile, const char *name, int fd)
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const char *pch_ident;
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struct c_pch_validity v;
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if (! allow_pch)
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return 2;
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/* Perform a quick test of whether this is a valid
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precompiled header for the current language. */
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@ -244,7 +242,7 @@ c_common_read_pch (cpp_reader *pfile, const char *name,
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return;
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}
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allow_pch = 0;
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cpp_get_callbacks (parse_in)->valid_pch = NULL;
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if (fread (&h, sizeof (h), 1, f) != 1)
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{
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@ -274,3 +272,15 @@ c_common_read_pch (cpp_reader *pfile, const char *name,
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fclose (f);
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}
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/* Indicate that no more PCH files should be read. */
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void
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c_common_no_more_pch (void)
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{
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if (cpp_get_callbacks (parse_in)->valid_pch)
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{
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cpp_get_callbacks (parse_in)->valid_pch = NULL;
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host_hooks.gt_pch_use_address (NULL, 0);
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}
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}
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@ -23,6 +23,7 @@
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#include "coretypes.h"
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#include <signal.h>
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#include <sys/ucontext.h>
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#include <sys/mman.h>
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#include "hosthooks.h"
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#include "hosthooks-def.h"
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#include "toplev.h"
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@ -135,5 +136,54 @@ darwin_rs6000_extra_signals (void)
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if (sigaction (SIGSEGV, &sact, 0) < 0)
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fatal_error ("While setting up signal handler: %m");
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}
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static void * darwin_rs6000_gt_pch_get_address (size_t);
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static bool darwin_rs6000_gt_pch_use_address (void *, size_t);
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#undef HOST_HOOKS_GT_PCH_GET_ADDRESS
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#define HOST_HOOKS_GT_PCH_GET_ADDRESS darwin_rs6000_gt_pch_get_address
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#undef HOST_HOOKS_GT_PCH_USE_ADDRESS
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#define HOST_HOOKS_GT_PCH_USE_ADDRESS darwin_rs6000_gt_pch_use_address
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/* Yes, this is really supposed to work. */
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static char pch_address_space[1024*1024*1024] __attribute__((aligned (4096)));
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/* Return the address of the PCH address space, if the PCH will fit in it. */
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static void *
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darwin_rs6000_gt_pch_get_address (size_t sz)
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{
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if (sz <= sizeof (pch_address_space))
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return pch_address_space;
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else
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return NULL;
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}
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/* Check ADDR and SZ for validity, and deallocate (using munmap) that part of
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pch_address_space beyond SZ. */
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static bool
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darwin_rs6000_gt_pch_use_address (void *addr, size_t sz)
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{
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const size_t pagesize = getpagesize();
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bool result;
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if ((size_t)pch_address_space % pagesize != 0
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|| sizeof (pch_address_space) % pagesize != 0)
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abort ();
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result = (addr == pch_address_space && sz <= sizeof (pch_address_space));
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if (! result)
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sz = 0;
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/* Round the size to a whole page size. Normally this is a no-op. */
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sz = (sz + pagesize - 1) / pagesize * pagesize;
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if (munmap (pch_address_space + sz, sizeof (pch_address_space) - sz) != 0)
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fatal_error ("couldn't unmap pch_address_space: %m\n");
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return result;
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}
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const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER;
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@ -1,3 +1,8 @@
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2003-07-29 Geoffrey Keating <geoffk@apple.com>
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* parser.c (cp_lexer_new_main): Use c_common_no_more_pch instead
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of setting valid_pch by hand.
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2003-07-29 Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>
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* decl.c (finish_enum): Initialize underlying_type.
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@ -302,7 +302,7 @@ cp_lexer_new_main (void)
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which is a GC collection point. So we have to grab the first
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token before allocating any memory. */
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cp_lexer_get_preprocessor_token (NULL, &first_token);
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cpp_get_callbacks (parse_in)->valid_pch = NULL;
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c_common_no_more_pch ();
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/* Allocate the memory. */
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lexer = ggc_alloc_cleared (sizeof (cp_lexer));
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@ -42,6 +42,39 @@ This host hook is used to set up handling for extra signals. The most
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common thing to do in this hook is to detect stack overflow.
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@end deftypefn
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@deftypefn {Host Hook} void * HOST_HOOKS_GT_PCH_GET_ADDRESS (size_t @var{size})
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This host hook returns the address of some space in which a PCH may be
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loaded with @samp{HOST_HOOKS_PCH_LOAD_PCH}. The space will need to
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have @var{size} bytes. If insufficient space is available,
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@samp{NULL} may be returned; the PCH machinery will try to find a
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suitable address using a heuristic.
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The memory does not have to be available now. In fact, usually
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@samp{HOST_HOOKS_PCH_LOAD_PCH} will already have been called. The memory
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need only be available in future invocations of GCC.
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@end deftypefn
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@deftypefn {Host Hook} bool HOST_HOOKS_GT_PCH_USE_ADDRESS (size_t @var{size}, void * @var{address})
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This host hook is called when a PCH file is about to be loaded. If
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@var{address} is the address that would have been returned by
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@samp{HOST_HOOKS_PCH_MEMORY_ADDRESS}, and @var{size} is smaller than
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the maximum than @samp{HOST_HOOKS_PCH_MEMORY_ADDRESS} would have
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accepted, return true, otherwise return false.
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In addition, free any address space reserved that isn't needed to hold
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@var{size} bytes (whether or not true is returned). The PCH machinery will
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use @samp{mmap} with @samp{MAP_FIXED} to load the PCH if @samp{HAVE_MMAP_FILE},
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or will use @samp{fread} otherwise.
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If no PCH will be loaded, this hook may be called with @var{size}
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zero, in which case all reserved address space should be freed.
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Do not try to handle values of @var{address} that could not have been
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returned by this executable; just return false. Such values usually
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indicate an out-of-date PCH file (built by some other GCC executable),
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and such a PCH file won't work.
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@end deftypefn
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@node Filesystem
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@section Host Filesystem
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@cindex configuration file
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121
gcc/ggc-common.c
121
gcc/ggc-common.c
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@ -29,6 +29,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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#include "ggc.h"
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#include "toplev.h"
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#include "params.h"
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#include "hosthooks.h"
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#ifdef HAVE_SYS_RESOURCE_H
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# include <sys/resource.h>
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@ -450,19 +451,24 @@ gt_pch_save (FILE *f)
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mmi.size = ggc_pch_total_size (state.d);
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/* Try to arrange things so that no relocation is necessary,
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but don't try very hard. On most platforms, this will always work,
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and on the rest it's a lot of work to do better. */
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/* Try to arrange things so that no relocation is necessary, but
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don't try very hard. On most platforms, this will always work,
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and on the rest it's a lot of work to do better.
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(The extra work goes in HOST_HOOKS_GT_PCH_GET_ADDRESS and
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HOST_HOOKS_GT_PCH_USE_ADDRESS.) */
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mmi.preferred_base = host_hooks.gt_pch_get_address (mmi.size);
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#if HAVE_MMAP_FILE
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mmi.preferred_base = mmap (NULL, mmi.size,
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PROT_READ | PROT_WRITE, MAP_PRIVATE,
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fileno (state.f), 0);
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if (mmi.preferred_base == (void *) MAP_FAILED)
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mmi.preferred_base = NULL;
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else
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munmap (mmi.preferred_base, mmi.size);
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#else /* HAVE_MMAP_FILE */
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mmi.preferred_base = NULL;
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if (mmi.preferred_base == NULL)
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{
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mmi.preferred_base = mmap (NULL, mmi.size,
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PROT_READ | PROT_WRITE, MAP_PRIVATE,
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fileno (state.f), 0);
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if (mmi.preferred_base == (void *) MAP_FAILED)
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mmi.preferred_base = NULL;
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else
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munmap (mmi.preferred_base, mmi.size);
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}
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#endif /* HAVE_MMAP_FILE */
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ggc_pch_this_base (state.d, mmi.preferred_base);
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@ -539,6 +545,7 @@ gt_pch_restore (FILE *f)
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size_t i;
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struct mmap_info mmi;
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void *addr;
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bool needs_read;
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/* Delete any deletable objects. This makes ggc_pch_read much
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faster, as it can be sure that no GCable objects remain other
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@ -571,47 +578,75 @@ gt_pch_restore (FILE *f)
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if (fread (&mmi, sizeof (mmi), 1, f) != 1)
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fatal_error ("can't read PCH file: %m");
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#if HAVE_MMAP_FILE
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addr = mmap (mmi.preferred_base, mmi.size,
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PROT_READ | PROT_WRITE, MAP_PRIVATE,
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fileno (f), mmi.offset);
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#if HAVE_MINCORE
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if (addr != mmi.preferred_base)
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if (host_hooks.gt_pch_use_address (mmi.preferred_base, mmi.size))
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{
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size_t page_size = getpagesize();
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char one_byte;
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#if HAVE_MMAP_FILE
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void *mmap_result;
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if (addr != (void *) MAP_FAILED)
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munmap (addr, mmi.size);
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mmap_result = mmap (mmi.preferred_base, mmi.size,
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PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED,
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fileno (f), mmi.offset);
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/* We really want to be mapped at mmi.preferred_base
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so we're going to resort to MAP_FIXED. But before,
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make sure that we can do so without destroying a
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previously mapped area, by looping over all pages
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that would be affected by the fixed mapping. */
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errno = 0;
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/* The file might not be mmap-able. */
|
||||
needs_read = mmap_result == MAP_FAILED;
|
||||
|
||||
for (i = 0; i < mmi.size; i+= page_size)
|
||||
if (mincore ((char *)mmi.preferred_base + i, page_size, (void *)&one_byte) == -1
|
||||
&& errno == ENOMEM)
|
||||
continue; /* The page is not mapped. */
|
||||
else
|
||||
break;
|
||||
|
||||
if (i >= mmi.size)
|
||||
addr = mmap (mmi.preferred_base, mmi.size,
|
||||
PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED,
|
||||
fileno (f), mmi.offset);
|
||||
/* Sanity check for broken MAP_FIXED. */
|
||||
if (! needs_read && mmap_result != mmi.preferred_base)
|
||||
abort ();
|
||||
#else
|
||||
needs_read = true;
|
||||
#endif
|
||||
addr = mmi.preferred_base;
|
||||
}
|
||||
else
|
||||
{
|
||||
#if HAVE_MMAP_FILE
|
||||
addr = mmap (mmi.preferred_base, mmi.size,
|
||||
PROT_READ | PROT_WRITE, MAP_PRIVATE,
|
||||
fileno (f), mmi.offset);
|
||||
|
||||
#if HAVE_MINCORE
|
||||
if (addr != mmi.preferred_base)
|
||||
{
|
||||
size_t page_size = getpagesize();
|
||||
char one_byte;
|
||||
|
||||
if (addr != (void *) MAP_FAILED)
|
||||
munmap (addr, mmi.size);
|
||||
|
||||
/* We really want to be mapped at mmi.preferred_base
|
||||
so we're going to resort to MAP_FIXED. But before,
|
||||
make sure that we can do so without destroying a
|
||||
previously mapped area, by looping over all pages
|
||||
that would be affected by the fixed mapping. */
|
||||
errno = 0;
|
||||
|
||||
for (i = 0; i < mmi.size; i+= page_size)
|
||||
if (mincore ((char *)mmi.preferred_base + i, page_size,
|
||||
(void *)&one_byte) == -1
|
||||
&& errno == ENOMEM)
|
||||
continue; /* The page is not mapped. */
|
||||
else
|
||||
break;
|
||||
|
||||
if (i >= mmi.size)
|
||||
addr = mmap (mmi.preferred_base, mmi.size,
|
||||
PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED,
|
||||
fileno (f), mmi.offset);
|
||||
}
|
||||
#endif /* HAVE_MINCORE */
|
||||
|
||||
needs_read = addr == (void *) MAP_FAILED;
|
||||
|
||||
#else /* HAVE_MMAP_FILE */
|
||||
addr = MAP_FAILED;
|
||||
needs_read = true;
|
||||
#endif /* HAVE_MMAP_FILE */
|
||||
if (addr == (void *) MAP_FAILED)
|
||||
if (needs_read)
|
||||
addr = xmalloc (mmi.size);
|
||||
}
|
||||
|
||||
if (needs_read)
|
||||
{
|
||||
addr = xmalloc (mmi.size);
|
||||
if (fseek (f, mmi.offset, SEEK_SET) != 0
|
||||
|| fread (&mmi, mmi.size, 1, f) != 1)
|
||||
fatal_error ("can't read PCH file: %m");
|
||||
|
|
|
|||
15
gcc/hooks.c
15
gcc/hooks.c
|
|
@ -192,3 +192,18 @@ hook_rtx_rtx_null (rtx x ATTRIBUTE_UNUSED)
|
|||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Generic hook that takes a size_t and returns NULL. */
|
||||
void *
|
||||
hook_voidp_size_t_null (size_t a ATTRIBUTE_UNUSED)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Generic hook that takes a size_t and a pointer and returns false. */
|
||||
bool
|
||||
hook_bool_voidp_size_t_false (void * a ATTRIBUTE_UNUSED,
|
||||
size_t b ATTRIBUTE_UNUSED)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -55,5 +55,7 @@ bool hook_bool_tree_tree_false (tree, tree);
|
|||
|
||||
rtx hook_rtx_rtx_identity (rtx);
|
||||
rtx hook_rtx_rtx_null (rtx);
|
||||
void * hook_voidp_size_t_null (size_t);
|
||||
bool hook_bool_voidp_size_t_false (void *, size_t);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -24,10 +24,14 @@ Boston, MA 02111-1307, USA. */
|
|||
#include "hooks.h"
|
||||
|
||||
#define HOST_HOOKS_EXTRA_SIGNALS hook_void_void
|
||||
#define HOST_HOOKS_GT_PCH_GET_ADDRESS hook_voidp_size_t_null
|
||||
#define HOST_HOOKS_GT_PCH_USE_ADDRESS hook_bool_voidp_size_t_false
|
||||
|
||||
/* The structure is defined in hosthooks.h. */
|
||||
#define HOST_HOOKS_INITIALIZER { \
|
||||
HOST_HOOKS_EXTRA_SIGNALS \
|
||||
HOST_HOOKS_EXTRA_SIGNALS, \
|
||||
HOST_HOOKS_GT_PCH_GET_ADDRESS, \
|
||||
HOST_HOOKS_GT_PCH_USE_ADDRESS \
|
||||
}
|
||||
|
||||
#endif /* GCC_HOST_HOOKS_DEF_H */
|
||||
|
|
|
|||
|
|
@ -25,6 +25,9 @@ struct host_hooks
|
|||
{
|
||||
void (*extra_signals) (void);
|
||||
|
||||
void * (*gt_pch_get_address) (size_t);
|
||||
bool (*gt_pch_use_address) (void *, size_t);
|
||||
|
||||
/* Whenever you add entries here, make sure you adjust hosthooks-def.h. */
|
||||
};
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue