Add symbol lookup cache.
authorDoug Evans <xdje42@gmail.com>
Sat, 31 Jan 2015 21:29:33 +0000 (13:29 -0800)
committerDoug Evans <xdje42@gmail.com>
Sat, 31 Jan 2015 21:29:33 +0000 (13:29 -0800)
commitf57d2163da62044205c3f53e0ecf186923296b63
tree31bb50455e71f7b3fae23fa4588d8227b1ba88fa
parente700d1b279b26d4b7d86cfae70d2e022ee748068
Add symbol lookup cache.

gdb/ChangeLog:

Add symbol lookup cache.
* NEWS: Document new options and commands.
* symtab.c (symbol_cache_key): New static global.
(DEFAULT_SYMBOL_CACHE_SIZE, MAX_SYMBOL_CACHE_SIZE): New macros.
(SYMBOL_LOOKUP_FAILED): New macro.
(symbol_cache_slot_state): New enum.
(block_symbol_cache): New struct.
(symbol_cache): New struct.
(new_symbol_cache_size, symbol_cache_size): New static globals.
(hash_symbol_entry, eq_symbol_entry): New functions.
(symbol_cache_byte_size, resize_symbol_cache): New functions.
(make_symbol_cache, free_symbol_cache): New functions.
(get_symbol_cache, symbol_cache_cleanup): New function.
(set_symbol_cache_size, set_symbol_cache_size_handler): New functions.
(symbol_cache_lookup, symbol_cache_clear_slot): New function.
(symbol_cache_mark_found, symbol_cache_mark_not_found): New functions.
(symbol_cache_flush, symbol_cache_dump): New functions.
(maintenance_print_symbol_cache): New function.
(maintenance_flush_symbol_cache): New function.
(symbol_cache_stats): New function.
(maintenance_print_symbol_cache_statistics): New function.
(symtab_new_objfile_observer): New function.
(symtab_free_objfile_observer): New function.
(lookup_static_symbol, lookup_global_symbol): Use symbol cache.
(_initialize_symtab): Init symbol_cache_key.  New parameter
maint symbol-cache-size.  New maint commands print symbol-cache,
print symbol-cache-statistics, flush-symbol-cache.
Install new_objfile, free_objfile observers.

gdb/doc/ChangeLog:

* gdb.texinfo (Symbols): Document new commands
"maint print symbol-cache", "maint print symbol-cache-statistics",
"maint flush-symbol-cache".  Document new option
"maint set symbol-cache-size".
gdb/ChangeLog
gdb/NEWS
gdb/doc/ChangeLog
gdb/doc/gdb.texinfo
gdb/symtab.c