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Convert symbol_cache to type-safe registry API 

This changes the symbol_cache to use the type-safe registry API.

gdb/ChangeLog
2019-05-08  Tom Tromey  <tom@tromey.com>

	* symtab.c (struct symbol_cache): Add destructor and
	initializers.
	(symbol_cache_key): Move.  Change type.
	(make_symbol_cache, free_symbol_cache): Remove.
	(get_symbol_cache): Update.
	(symbol_cache_cleanup): Remove.
	(ALL_PSPACES, symbol_cache_flush)
	(maintenance_print_symbol_cache)
	(maintenance_print_symbol_cache_statistics, _initialize_symtab):
	Update.
This commit is contained in:
Tom Tromey 2019-04-09 21:46:16 -06:00
parent a32ad8c55c
commit 3017b94d60
2 changed files with 34 additions and 54 deletions
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13
gdb/ChangeLog
View File

@ -1,3 +1,16 @@
2019-05-08 Tom Tromey <tom@tromey.com>
* symtab.c (struct symbol_cache): Add destructor and
initializers.
(symbol_cache_key): Move. Change type.
(make_symbol_cache, free_symbol_cache): Remove.
(get_symbol_cache): Update.
(symbol_cache_cleanup): Remove.
(ALL_PSPACES, symbol_cache_flush)
(maintenance_print_symbol_cache)
(maintenance_print_symbol_cache_statistics, _initialize_symtab):
Update.
2019-05-08 Tom Tromey <tom@tromey.com>
* symtab.c (struct main_info): Add destructor and initializers.

75
gdb/symtab.c
View File

@ -119,10 +119,6 @@ struct main_info
static const program_space_key<main_info> main_progspace_key;
/* Program space key for finding its symbol cache. */
static const struct program_space_data *symbol_cache_key;
/* The default symbol cache size.
There is no extra cpu cost for large N (except when flushing the cache,
which is rare). The value here is just a first attempt. A better default
@ -214,10 +210,22 @@ struct block_symbol_cache
struct symbol_cache
{
struct block_symbol_cache *global_symbols;
struct block_symbol_cache *static_symbols;
symbol_cache () = default;
~symbol_cache ()
{
xfree (global_symbols);
xfree (static_symbols);
}
struct block_symbol_cache *global_symbols = nullptr;
struct block_symbol_cache *static_symbols = nullptr;
};
/* Program space key for finding its symbol cache. */
static const program_space_key<symbol_cache> symbol_cache_key;
/* When non-zero, print debugging messages related to symtab creation. */
unsigned int symtab_create_debug = 0;
@ -1226,57 +1234,23 @@ resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size)
}
}
/* Make a symbol cache of size SIZE. */
static struct symbol_cache *
make_symbol_cache (unsigned int size)
{
struct symbol_cache *cache;
cache = XCNEW (struct symbol_cache);
resize_symbol_cache (cache, symbol_cache_size);
return cache;
}
/* Free the space used by CACHE. */
static void
free_symbol_cache (struct symbol_cache *cache)
{
xfree (cache->global_symbols);
xfree (cache->static_symbols);
xfree (cache);
}
/* Return the symbol cache of PSPACE.
Create one if it doesn't exist yet. */
static struct symbol_cache *
get_symbol_cache (struct program_space *pspace)
{
struct symbol_cache *cache
= (struct symbol_cache *) program_space_data (pspace, symbol_cache_key);
struct symbol_cache *cache = symbol_cache_key.get (pspace);
if (cache == NULL)
{
cache = make_symbol_cache (symbol_cache_size);
set_program_space_data (pspace, symbol_cache_key, cache);
cache = symbol_cache_key.emplace (pspace);
resize_symbol_cache (cache, symbol_cache_size);
}
return cache;
}
/* Delete the symbol cache of PSPACE.
Called when PSPACE is destroyed. */
static void
symbol_cache_cleanup (struct program_space *pspace, void *data)
{
struct symbol_cache *cache = (struct symbol_cache *) data;
free_symbol_cache (cache);
}
/* Set the size of the symbol cache in all program spaces. */
static void
@ -1286,8 +1260,7 @@ set_symbol_cache_size (unsigned int new_size)
ALL_PSPACES (pspace)
{
struct symbol_cache *cache
= (struct symbol_cache *) program_space_data (pspace, symbol_cache_key);
struct symbol_cache *cache = symbol_cache_key.get (pspace);
/* The pspace could have been created but not have a cache yet. */
if (cache != NULL)
@ -1443,8 +1416,7 @@ symbol_cache_mark_not_found (struct block_symbol_cache *bsc,
static void
symbol_cache_flush (struct program_space *pspace)
{
struct symbol_cache *cache
= (struct symbol_cache *) program_space_data (pspace, symbol_cache_key);
struct symbol_cache *cache = symbol_cache_key.get (pspace);
int pass;
if (cache == NULL)
@ -1558,8 +1530,7 @@ maintenance_print_symbol_cache (const char *args, int from_tty)
: "(no object file)");
/* If the cache hasn't been created yet, avoid creating one. */
cache
= (struct symbol_cache *) program_space_data (pspace, symbol_cache_key);
cache = symbol_cache_key.get (pspace);
if (cache == NULL)
printf_filtered (" <empty>\n");
else
@ -1630,8 +1601,7 @@ maintenance_print_symbol_cache_statistics (const char *args, int from_tty)
: "(no object file)");
/* If the cache hasn't been created yet, avoid creating one. */
cache
= (struct symbol_cache *) program_space_data (pspace, symbol_cache_key);
cache = symbol_cache_key.get (pspace);
if (cache == NULL)
printf_filtered (" empty, no stats available\n");
else
@ -6037,9 +6007,6 @@ _initialize_symtab (void)
{
initialize_ordinary_address_classes ();
symbol_cache_key
= register_program_space_data_with_cleanup (NULL, symbol_cache_cleanup);
add_info ("variables", info_variables_command,
info_print_args_help (_("\
All global and static variable names or those matching REGEXPs.\n\