Based on patch from Daniel Berlin <dberlin@dberlin.org>.
* buildsym.c: Include "demangle.h" for SYMBOL_INIT_DEMANGLED_NAME.
(finish_block) For non-function blocks, hash the symbol table. For
function blocks, mark the symbol table as unhashed.
* minsyms.c (msymbol_hash): Return hash value without taking modulus.
(msymbol_hash_iw): Likewise.
(add_minsym_to_hash_table): Take modulus of msymbol_hash's return
value.
(add_minsym_to_demangled_hash_table): Likewise for msymbol_hash_iw.
(lookup_minimal_symbol): Likewise for both.
* symtab.h (struct block): Add `hashtable' flag. Comment the
hashtable.
(BLOCK_HASHTABLE, BLOCK_BUCKETS, BLOCK_BUCKET): New macro.
(ALL_BLOCK_SYMBOLS): Update.
(BLOCK_SHOULD_SORT): Do not sort hashed blocks.
(struct symbol): Add `hash_next' pointer.
* symtab.c (lookup_block_symbol): Search using the hash table when
possible.
(find_pc_sect_symtab): Use ALL_BLOCK_SYMBOLS.
(search_symbols, find_addr_symbol): Likewise.
* dstread.c (process_dst_block): Clear hashtable bit for new block.
(read_dst_symtab): Likewise.
* jv-lang.c (get_java_class_symtab): Likewise.
* mdebugread.c: Include "gdb_assert.h".
(shrink_block): Assert that the block being modified is not hashed.
* coffread.c (patch_opaque_types): Use ALL_BLOCK_SYMBOLS.
* symmisc.c (free_symtab_block): Walk the hash table when freeing
symbols.
(dump_symtab): Recognize hashed blocks.
* printcmd.c (print_frame_args): Assert that function blocks do not
have hashed symbol tables.
* ada-lang.c (symtab_for_sym): Use ALL_BLOCK_SYMBOLS.
(fill_in_ada_prototype, debug_print_block): Likewise.
(ada_add_block_symbols): Use ALL_BLOCK_SYMBOLS. Handle hash tables.
+2002-07-11 Daniel Jacobowitz <drow@mvista.com>
+
+ Based on patch from Daniel Berlin <dberlin@dberlin.org>.
+ * buildsym.c: Include "demangle.h" for SYMBOL_INIT_DEMANGLED_NAME.
+ (finish_block) For non-function blocks, hash the symbol table. For
+ function blocks, mark the symbol table as unhashed.
+ * minsyms.c (msymbol_hash): Return hash value without taking modulus.
+ (msymbol_hash_iw): Likewise.
+ (add_minsym_to_hash_table): Take modulus of msymbol_hash's return
+ value.
+ (add_minsym_to_demangled_hash_table): Likewise for msymbol_hash_iw.
+ (lookup_minimal_symbol): Likewise for both.
+ * symtab.h (struct block): Add `hashtable' flag. Comment the
+ hashtable.
+ (BLOCK_HASHTABLE, BLOCK_BUCKETS, BLOCK_BUCKET): New macro.
+ (ALL_BLOCK_SYMBOLS): Update.
+ (BLOCK_SHOULD_SORT): Do not sort hashed blocks.
+ (struct symbol): Add `hash_next' pointer.
+ * symtab.c (lookup_block_symbol): Search using the hash table when
+ possible.
+ (find_pc_sect_symtab): Use ALL_BLOCK_SYMBOLS.
+ (search_symbols, find_addr_symbol): Likewise.
+
+ * dstread.c (process_dst_block): Clear hashtable bit for new block.
+ (read_dst_symtab): Likewise.
+ * jv-lang.c (get_java_class_symtab): Likewise.
+ * mdebugread.c: Include "gdb_assert.h".
+ (shrink_block): Assert that the block being modified is not hashed.
+ * coffread.c (patch_opaque_types): Use ALL_BLOCK_SYMBOLS.
+ * symmisc.c (free_symtab_block): Walk the hash table when freeing
+ symbols.
+ (dump_symtab): Recognize hashed blocks.
+ * printcmd.c (print_frame_args): Assert that function blocks do not
+ have hashed symbol tables.
+ * ada-lang.c (symtab_for_sym): Use ALL_BLOCK_SYMBOLS.
+ (fill_in_ada_prototype, debug_print_block): Likewise.
+ (ada_add_block_symbols): Use ALL_BLOCK_SYMBOLS. Handle hash tables.
+
2002-07-11 Corinna Vinschen <vinschen@redhat.com>
* stack.c (print_frame): Use result of frame_address_in_block()
struct symtab* s;
struct objfile *objfile;
struct block *b;
+ struct symbol *tmp_sym;
int i, j;
ALL_SYMTABS (objfile, s)
case LOC_BLOCK:
case LOC_CONST_BYTES:
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
- for (i = 0; i < BLOCK_NSYMS (b); i += 1)
- if (sym == BLOCK_SYM (b, i))
+ ALL_BLOCK_SYMBOLS (b, i, tmp_sym)
+ if (sym == tmp_sym)
return s;
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
- for (i = 0; i < BLOCK_NSYMS (b); i += 1)
- if (sym == BLOCK_SYM (b, i))
+ ALL_BLOCK_SYMBOLS (b, i, tmp_sym)
+ if (sym == tmp_sym)
return s;
break;
default:
j < BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (s)); j += 1)
{
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), j);
- for (i = 0; i < BLOCK_NSYMS (b); i += 1)
- if (sym == BLOCK_SYM (b, i))
+ ALL_BLOCK_SYMBOLS (b, i, tmp_sym)
+ if (sym == tmp_sym)
return s;
}
break;
/* Set true when we find a matching non-argument symbol */
int found_sym;
int is_sorted = BLOCK_SHOULD_SORT (block);
+ struct symbol *sym;
arg_sym = NULL; found_sym = 0;
if (wild)
{
- for (i = 0; i < BLOCK_NSYMS (block); i += 1)
+ struct symbol *sym;
+ ALL_BLOCK_SYMBOLS (block, i, sym)
{
- struct symbol *sym = BLOCK_SYM (block, i);
-
if (SYMBOL_NAMESPACE (sym) == namespace &&
wild_match (name, name_len, SYMBOL_NAME (sym)))
{
else
i = 0;
- for (; i < BLOCK_NSYMS (block); i += 1)
- {
- struct symbol *sym = BLOCK_SYM (block, i);
+ for (; i < BLOCK_BUCKETS (block); i += 1)
+ for (sym = BLOCK_BUCKET (block, i); sym != NULL; sym = sym->hash_next)
+ {
+ if (SYMBOL_NAMESPACE (sym) == namespace)
+ {
+ int cmp = strncmp (name, SYMBOL_NAME (sym), name_len);
- if (SYMBOL_NAMESPACE (sym) == namespace)
- {
- int cmp = strncmp (name, SYMBOL_NAME (sym), name_len);
-
- if (cmp < 0)
- {
- if (is_sorted)
- break;
- }
- else if (cmp == 0
- && is_name_suffix (SYMBOL_NAME (sym) + name_len))
- {
- switch (SYMBOL_CLASS (sym))
- {
- case LOC_ARG:
- case LOC_LOCAL_ARG:
- case LOC_REF_ARG:
- case LOC_REGPARM:
- case LOC_REGPARM_ADDR:
- case LOC_BASEREG_ARG:
- arg_sym = sym;
- break;
- case LOC_UNRESOLVED:
- break;
- default:
- found_sym = 1;
- fill_in_ada_prototype (sym);
- add_defn_to_vec (fixup_symbol_section (sym, objfile),
- block);
- break;
- }
- }
- }
- }
+ if (cmp < 0)
+ {
+ if (is_sorted)
+ {
+ i = BLOCK_BUCKETS (block);
+ break;
+ }
+ }
+ else if (cmp == 0
+ && is_name_suffix (SYMBOL_NAME (sym) + name_len))
+ {
+ switch (SYMBOL_CLASS (sym))
+ {
+ case LOC_ARG:
+ case LOC_LOCAL_ARG:
+ case LOC_REF_ARG:
+ case LOC_REGPARM:
+ case LOC_REGPARM_ADDR:
+ case LOC_BASEREG_ARG:
+ arg_sym = sym;
+ break;
+ case LOC_UNRESOLVED:
+ break;
+ default:
+ found_sym = 1;
+ fill_in_ada_prototype (sym);
+ add_defn_to_vec (fixup_symbol_section (sym, objfile),
+ block);
+ break;
+ }
+ }
+ }
+ }
}
if (! found_sym && arg_sym != NULL)
else
i = 0;
- for (; i < BLOCK_NSYMS (block); i += 1)
- {
- struct symbol *sym = BLOCK_SYM (block, i);
+ for (; i < BLOCK_BUCKETS (block); i += 1)
+ for (sym = BLOCK_BUCKET (block, i); sym != NULL; sym = sym->hash_next)
+ {
+ struct symbol *sym = BLOCK_SYM (block, i);
- if (SYMBOL_NAMESPACE (sym) == namespace)
- {
- int cmp;
+ if (SYMBOL_NAMESPACE (sym) == namespace)
+ {
+ int cmp;
- cmp = (int) '_' - (int) SYMBOL_NAME (sym)[0];
- if (cmp == 0)
- {
- cmp = strncmp ("_ada_", SYMBOL_NAME (sym), 5);
- if (cmp == 0)
- cmp = strncmp (name, SYMBOL_NAME (sym) + 5, name_len);
- }
-
- if (cmp < 0)
- {
- if (is_sorted)
- break;
- }
- else if (cmp == 0
- && is_name_suffix (SYMBOL_NAME (sym) + name_len + 5))
- {
- switch (SYMBOL_CLASS (sym))
- {
- case LOC_ARG:
- case LOC_LOCAL_ARG:
- case LOC_REF_ARG:
- case LOC_REGPARM:
- case LOC_REGPARM_ADDR:
- case LOC_BASEREG_ARG:
- arg_sym = sym;
- break;
- case LOC_UNRESOLVED:
- break;
- default:
- found_sym = 1;
- fill_in_ada_prototype (sym);
- add_defn_to_vec (fixup_symbol_section (sym, objfile),
- block);
- break;
- }
- }
- }
- }
-
+ cmp = (int) '_' - (int) SYMBOL_NAME (sym)[0];
+ if (cmp == 0)
+ {
+ cmp = strncmp ("_ada_", SYMBOL_NAME (sym), 5);
+ if (cmp == 0)
+ cmp = strncmp (name, SYMBOL_NAME (sym) + 5, name_len);
+ }
+
+ if (cmp < 0)
+ {
+ if (is_sorted)
+ {
+ i = BLOCK_BUCKETS (block);
+ break;
+ }
+ }
+ else if (cmp == 0
+ && is_name_suffix (SYMBOL_NAME (sym) + name_len + 5))
+ {
+ switch (SYMBOL_CLASS (sym))
+ {
+ case LOC_ARG:
+ case LOC_LOCAL_ARG:
+ case LOC_REF_ARG:
+ case LOC_REGPARM:
+ case LOC_REGPARM_ADDR:
+ case LOC_BASEREG_ARG:
+ arg_sym = sym;
+ break;
+ case LOC_UNRESOLVED:
+ break;
+ default:
+ found_sym = 1;
+ fill_in_ada_prototype (sym);
+ add_defn_to_vec (fixup_symbol_section (sym, objfile),
+ block);
+ break;
+ }
+ }
+ }
+ }
+
/* NOTE: This really shouldn't be needed for _ada_ symbols.
They aren't parameters, right? */
if (! found_sym && arg_sym != NULL)
struct type* ftype;
struct type* rtype;
size_t max_fields;
+ struct symbol *sym;
if (func == NULL
|| TYPE_CODE (SYMBOL_TYPE (func)) != TYPE_CODE_FUNC
SYMBOL_TYPE (func) = ftype;
b = SYMBOL_BLOCK_VALUE (func);
- nsyms = BLOCK_NSYMS (b);
nargs = 0;
max_fields = 8;
TYPE_FIELDS (ftype) =
(struct field*) xmalloc (sizeof (struct field) * max_fields);
- for (i = 0; i < nsyms; i += 1)
+ ALL_BLOCK_SYMBOLS (b, i, sym)
{
- struct symbol *sym = BLOCK_SYM (b, i);
-
GROW_VECT (TYPE_FIELDS (ftype), max_fields, nargs+1);
switch (SYMBOL_CLASS (sym))
struct block* b;
{
int i;
+ struct symbol *i;
+
fprintf (stderr, "Block: %p; [0x%lx, 0x%lx]",
b, BLOCK_START(b), BLOCK_END(b));
if (BLOCK_FUNCTION(b) != NULL)
fprintf (stderr, "\n");
fprintf (stderr, "\t Superblock: %p\n", BLOCK_SUPERBLOCK(b));
fprintf (stderr, "\t Symbols:");
- for (i = 0; i < BLOCK_NSYMS (b); i += 1)
+ ALL_BLOCK_SYMBOLS (b, i, sym)
{
if (i > 0 && i % 4 == 0)
fprintf (stderr, "\n\t\t ");
- fprintf (stderr, " %s", SYMBOL_NAME (BLOCK_SYM (b, i)));
+ fprintf (stderr, " %s", SYMBOL_NAME (sym));
}
fprintf (stderr, "\n");
}
#include "bcache.h"
#include "filenames.h" /* For DOSish file names */
#include "macrotab.h"
+#include "demangle.h" /* Needed by SYMBOL_INIT_DEMANGLED_NAME. */
/* Ask buildsym.h to define the vars it normally declares `extern'. */
#define EXTERN
/**/
/* EMPTY */ ;
}
- block = (struct block *) obstack_alloc (&objfile->symbol_obstack,
- (sizeof (struct block) + ((i - 1) * sizeof (struct symbol *))));
-
/* Copy the symbols into the block. */
- BLOCK_NSYMS (block) = i;
- for (next = *listhead; next; next = next->next)
+ if (symbol)
+ {
+ block = (struct block *)
+ obstack_alloc (&objfile->symbol_obstack,
+ (sizeof (struct block) +
+ ((i - 1) * sizeof (struct symbol *))));
+ BLOCK_NSYMS (block) = i;
+ for (next = *listhead; next; next = next->next)
+ for (j = next->nsyms - 1; j >= 0; j--)
+ {
+ BLOCK_SYM (block, --i) = next->symbol[j];
+ }
+ }
+ else
{
- for (j = next->nsyms - 1; j >= 0; j--)
+ int htab_size = BLOCK_HASHTABLE_SIZE (i);
+
+ block = (struct block *)
+ obstack_alloc (&objfile->symbol_obstack,
+ (sizeof (struct block) +
+ ((htab_size - 1) * sizeof (struct symbol *))));
+ for (j = 0; j < htab_size; j++)
+ {
+ BLOCK_BUCKET (block, j) = 0;
+ }
+ BLOCK_BUCKETS (block) = htab_size;
+ for (next = *listhead; next; next = next->next)
{
- BLOCK_SYM (block, --i) = next->symbol[j];
+ for (j = next->nsyms - 1; j >= 0; j--)
+ {
+ struct symbol *sym;
+ unsigned int hash_index;
+ const char *name = SYMBOL_DEMANGLED_NAME (next->symbol[j]);
+ if (name == NULL)
+ name = SYMBOL_NAME (next->symbol[j]);
+ hash_index = msymbol_hash_iw (name);
+ hash_index = hash_index % BLOCK_BUCKETS (block);
+ sym = BLOCK_BUCKET (block, hash_index);
+ BLOCK_BUCKET (block, hash_index) = next->symbol[j];
+ next->symbol[j]->hash_next = sym;
+ }
}
}
struct type *ftype = SYMBOL_TYPE (symbol);
SYMBOL_BLOCK_VALUE (symbol) = block;
BLOCK_FUNCTION (block) = symbol;
+ BLOCK_HASHTABLE (block) = 0;
if (TYPE_NFIELDS (ftype) <= 0)
{
else
{
BLOCK_FUNCTION (block) = NULL;
+ BLOCK_HASHTABLE (block) = 1;
}
/* Now "free" the links of the list, and empty the list. */
/* Go through the per-file symbols only */
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
- for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--)
+ ALL_BLOCK_SYMBOLS (b, i, real_sym)
{
/* Find completed typedefs to use to fix opaque ones.
Remove syms from the chain when their types are stored,
but search the whole chain, as there may be several syms
from different files with the same name. */
- real_sym = BLOCK_SYM (b, i);
if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF &&
SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE &&
TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR &&
symnum++;
}
BLOCK_NSYMS (block) = total_symbols;
+ BLOCK_HASHTABLE (block) = 0;
BLOCK_START (block) = address;
BLOCK_END (block) = address + size;
BLOCK_SUPERBLOCK (block) = 0;
(total_globals - 1) *
sizeof (struct symbol *));
BLOCK_NSYMS (global_block) = total_globals;
+ BLOCK_HASHTABLE (global_block) = 0;
for (symnum = 0; symnum < total_globals; symnum++)
{
nextsym = dst_global_symbols->next;
bl = (struct block *)
obstack_alloc (&objfile->symbol_obstack, sizeof (struct block));
BLOCK_NSYMS (bl) = 0;
+ BLOCK_HASHTABLE (bl) = 0;
BLOCK_START (bl) = 0;
BLOCK_END (bl) = 0;
BLOCK_FUNCTION (bl) = NULL;
#include "stabsread.h"
#include "complaints.h"
#include "demangle.h"
+#include "gdb_assert.h"
/* These are needed if the tm.h file does not contain the necessary
mips specific definitions. */
+ ((BLOCK_NSYMS (b) - 1)
* sizeof (struct symbol *))));
+ /* FIXME: Not worth hashing this block as it's built. */
+ /* All callers should have created the block with new_block (), which
+ would mean it was not previously hashed. Make sure. */
+ gdb_assert (BLOCK_HASHTABLE (new) == 0);
+
/* Should chase pointers to old one. Fortunately, that`s just
the block`s function and inferior blocks */
if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b)
++string;
}
}
- return hash % MINIMAL_SYMBOL_HASH_SIZE;
+ return hash;
}
/* Compute a hash code for a string. */
unsigned int hash = 0;
for (; *string; ++string)
hash = hash * 67 + *string - 113;
- return hash % MINIMAL_SYMBOL_HASH_SIZE;
+ return hash;
}
/* Add the minimal symbol SYM to an objfile's minsym hash table, TABLE. */
{
if (sym->hash_next == NULL)
{
- unsigned int hash = msymbol_hash (SYMBOL_NAME (sym));
+ unsigned int hash = msymbol_hash (SYMBOL_NAME (sym)) % MINIMAL_SYMBOL_HASH_SIZE;
sym->hash_next = table[hash];
table[hash] = sym;
}
{
if (sym->demangled_hash_next == NULL)
{
- unsigned int hash = msymbol_hash_iw (SYMBOL_DEMANGLED_NAME (sym));
+ unsigned int hash = msymbol_hash_iw (SYMBOL_DEMANGLED_NAME (sym)) % MINIMAL_SYMBOL_HASH_SIZE;
sym->demangled_hash_next = table[hash];
table[hash] = sym;
}
struct minimal_symbol *found_file_symbol = NULL;
struct minimal_symbol *trampoline_symbol = NULL;
- unsigned int hash = msymbol_hash (name);
- unsigned int dem_hash = msymbol_hash_iw (name);
+ unsigned int hash = msymbol_hash (name) % MINIMAL_SYMBOL_HASH_SIZE;
+ unsigned int dem_hash = msymbol_hash_iw (name) % MINIMAL_SYMBOL_HASH_SIZE;
#ifdef SOFUN_ADDRESS_MAYBE_MISSING
if (sfile != NULL)
#include "objfiles.h" /* ditto */
#include "completer.h" /* for completion functions */
#include "ui-out.h"
+#include "gdb_assert.h"
extern int asm_demangle; /* Whether to demangle syms in asm printouts */
extern int addressprint; /* Whether to print hex addresses in HLL " */
if (func)
{
b = SYMBOL_BLOCK_VALUE (func);
+ /* Function blocks are order sensitive, and thus should not be
+ hashed. */
+ gdb_assert (BLOCK_HASHTABLE (b) == 0);
+
ALL_BLOCK_SYMBOLS (b, i, sym)
{
QUIT;
free_symtab_block (struct objfile *objfile, struct block *b)
{
register int i, n;
- n = BLOCK_NSYMS (b);
+ struct symbol *sym, *next_sym;
+
+ n = BLOCK_BUCKETS (b);
for (i = 0; i < n; i++)
{
- xmfree (objfile->md, SYMBOL_NAME (BLOCK_SYM (b, i)));
- xmfree (objfile->md, (PTR) BLOCK_SYM (b, i));
+ for (sym = BLOCK_BUCKET (b, i); sym; sym = next_sym)
+ {
+ next_sym = sym->hash_next;
+ xmfree (objfile->md, SYMBOL_NAME (sym));
+ xmfree (objfile->md, (PTR) sym);
+ }
}
xmfree (objfile->md, (PTR) b);
}
fprintf_filtered (outfile, " under ");
gdb_print_host_address (BLOCK_SUPERBLOCK (b), outfile);
}
- blen = BLOCK_NSYMS (b);
- fprintf_filtered (outfile, ", %d syms in ", blen);
+ /* drow/2002-07-10: We could save the total symbols count
+ even if we're using a hashtable, but nothing else but this message
+ wants it. */
+ blen = BLOCK_BUCKETS (b);
+ if (BLOCK_HASHTABLE (b))
+ fprintf_filtered (outfile, ", %d buckets in ", blen);
+ else
+ fprintf_filtered (outfile, ", %d syms in ", blen);
print_address_numeric (BLOCK_START (b), 1, outfile);
fprintf_filtered (outfile, "..");
print_address_numeric (BLOCK_END (b), 1, outfile);
if (BLOCK_GCC_COMPILED (b))
fprintf_filtered (outfile, ", compiled with gcc%d", BLOCK_GCC_COMPILED (b));
fprintf_filtered (outfile, "\n");
- /* Now print each symbol in this block. */
- /* FIXMED: Sort? */
+ /* Now print each symbol in this block (in no particular order, if
+ we're using a hashtable). */
ALL_BLOCK_SYMBOLS (b, j, sym)
{
struct print_symbol_args s;
register struct symbol *sym_found = NULL;
register int do_linear_search = 1;
+ if (BLOCK_HASHTABLE (block))
+ {
+ unsigned int hash_index;
+ hash_index = msymbol_hash_iw (name);
+ hash_index = hash_index % BLOCK_BUCKETS (block);
+ for (sym = BLOCK_BUCKET (block, hash_index); sym; sym = sym->hash_next)
+ {
+ if (SYMBOL_NAMESPACE (sym) == namespace
+ && (mangled_name
+ ? strcmp (SYMBOL_NAME (sym), mangled_name) == 0
+ : SYMBOL_MATCHES_NAME (sym, name)))
+ return sym;
+ }
+ return NULL;
+ }
+
/* If the blocks's symbols were sorted, start with a binary search. */
if (BLOCK_SHOULD_SORT (block))
if (section != 0)
{
int i;
+ struct symbol *sym = NULL;
- for (i = 0; i < b->nsyms; i++)
+ ALL_BLOCK_SYMBOLS (b, i, sym)
{
- fixup_symbol_section (b->sym[i], objfile);
- if (section == SYMBOL_BFD_SECTION (b->sym[i]))
+ fixup_symbol_section (sym, objfile);
+ if (section == SYMBOL_BFD_SECTION (sym))
break;
}
- if (i >= b->nsyms)
+ if ((i >= BLOCK_BUCKETS (b)) && (sym == NULL))
continue; /* no symbol in this symtab matches section */
}
distance = BLOCK_END (b) - BLOCK_START (b);
{
QUIT;
block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), blocknum);
- top = BLOCK_NSYMS (block);
- for (bot = 0; bot < top; bot++)
+ ALL_BLOCK_SYMBOLS (block, bot, sym)
{
- sym = BLOCK_SYM (block, bot);
switch (SYMBOL_CLASS (sym))
{
case LOC_STATIC:
struct symbol_search *prevtail = tail;
int nfound = 0;
b = BLOCKVECTOR_BLOCK (bv, i);
- for (j = 0; j < BLOCK_NSYMS (b); j++)
+ ALL_BLOCK_SYMBOLS (b, j, sym)
{
QUIT;
- sym = BLOCK_SYM (b, j);
if (file_matches (s->filename, files, nfiles)
&& ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym))
&& ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (sym) != LOC_TYPEDEF
unsigned char gcc_compile_flag;
+ /* The symbols for this block are either in a simple linear list or
+ in a simple hashtable. Blocks which correspond to a function
+ (which have a list of symbols corresponding to arguments) use
+ a linear list, as do some older symbol readers (currently only
+ mdebugread and dstread). Other blocks are hashed.
+
+ The hashtable uses the same hash function as the minsym hashtables,
+ found in minsyms.c:minsym_hash_iw. Symbols are hashed based on
+ their demangled name if appropriate, and on their name otherwise.
+ The hash function ignores space, and stops at the beginning of the
+ argument list if any.
+
+ The table is laid out in NSYMS/5 buckets and symbols are chained via
+ their hash_next field. */
+
+ /* If this is really a hashtable of the symbols, this flag is 1. */
+
+ unsigned char hashtable;
+
/* Number of local symbols. */
int nsyms;
#define BLOCK_START(bl) (bl)->startaddr
#define BLOCK_END(bl) (bl)->endaddr
-#define BLOCK_NSYMS(bl) (bl)->nsyms
-#define BLOCK_SYM(bl, n) (bl)->sym[n]
#define BLOCK_FUNCTION(bl) (bl)->function
#define BLOCK_SUPERBLOCK(bl) (bl)->superblock
#define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag
+#define BLOCK_HASHTABLE(bl) (bl)->hashtable
-/* Macro to loop through all symbols in a block BL.
- i counts which symbol we are looking at, and sym points to the current
- symbol.
- The contortion at the end is to avoid reading past the last valid
- BLOCK_SYM. */
-#define ALL_BLOCK_SYMBOLS(bl, i, sym) \
- for ((i) = 0, (sym) = BLOCK_SYM ((bl), (i)); \
- (i) < BLOCK_NSYMS ((bl)); \
- ++(i), (sym) = ((i) < BLOCK_NSYMS ((bl))) \
- ? BLOCK_SYM ((bl), (i)) \
- : NULL)
+/* For blocks without a hashtable (BLOCK_HASHTABLE (bl) == 0) only. */
+#define BLOCK_NSYMS(bl) (bl)->nsyms
+#define BLOCK_SYM(bl, n) (bl)->sym[n]
+
+/* For blocks with a hashtable, but these are valid for non-hashed blocks as
+ well - each symbol will appear to be one bucket by itself. */
+#define BLOCK_BUCKETS(bl) (bl)->nsyms
+#define BLOCK_BUCKET(bl, n) (bl)->sym[n]
+
+/* Macro used to set the size of a hashtable for N symbols. */
+#define BLOCK_HASHTABLE_SIZE(n) ((n)/5 + 1)
+
+/* Macro to loop through all symbols in a block BL, in no particular order.
+ i counts which bucket we are in, and sym points to the current symbol. */
+
+#define ALL_BLOCK_SYMBOLS(bl, i, sym) \
+ for ((i) = 0; (i) < BLOCK_BUCKETS ((bl)); (i)++) \
+ for ((sym) = BLOCK_BUCKET ((bl), (i)); (sym); \
+ (sym) = (sym)->hash_next)
/* Nonzero if symbols of block BL should be sorted alphabetically.
Don't sort a block which corresponds to a function. If we did the
sorting would have to preserve the order of the symbols for the
- arguments. */
+ arguments. Also don't sort any block that we chose to hash. */
-#define BLOCK_SHOULD_SORT(bl) ((bl)->nsyms >= 40 && BLOCK_FUNCTION (bl) == NULL)
+#define BLOCK_SHOULD_SORT(bl) (! BLOCK_HASHTABLE (bl) \
+ && BLOCK_FUNCTION (bl) == NULL)
\f
/* Represent one symbol name; a variable, constant, function or typedef. */
/* List of ranges where this symbol is active. This is only
used by alias symbols at the current time. */
struct range_list *ranges;
+
+ struct symbol *hash_next;
};
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