gdb/dwarf: rename cooked_index to cooked_index_shard

I propose to rename cooked_index_vector and cooked_index such that the
"main" object, that is the entry point to the index, is called
cooked_index.  The fact that the cooked index is implemented as a vector
of smaller indexes is an implementation detail.

This patch renames cooked_index to cooked_index_shard.  The following
patch renames cooked_index_vector to cooked_index.

Change-Id: Id650f97dcb23c48f8409fa0974cd093ca0b75177
Approved-By: Tom Tromey <tom@tromey.com>

gdb/dwarf2/cooked-index.c

@@ -204,10 +204,10 @@ cooked_index_entry::write_scope (struct obstack *storage,
 /* See cooked-index.h.  */
 
 const cooked_index_entry *
-cooked_index::add (sect_offset die_offset, enum dwarf_tag tag,
+cooked_index_shard::add (sect_offset die_offset, enum dwarf_tag tag,
-		   cooked_index_flag flags, const char *name,
+			 cooked_index_flag flags, const char *name,
-		   const cooked_index_entry *parent_entry,
+			 const cooked_index_entry *parent_entry,
-		   dwarf2_per_cu_data *per_cu)
+			 dwarf2_per_cu_data *per_cu)
 {
   cooked_index_entry *result = create (die_offset, tag, flags, name,
 				       parent_entry, per_cu);
@@ -228,7 +228,7 @@ cooked_index::add (sect_offset die_offset, enum dwarf_tag tag,
 /* See cooked-index.h.  */
 
 void
-cooked_index::finalize ()
+cooked_index_shard::finalize ()
 {
   m_future = gdb::thread_pool::g_thread_pool->post_task ([this] ()
     {
@@ -239,8 +239,8 @@ cooked_index::finalize ()
 /* See cooked-index.h.  */
 
 gdb::unique_xmalloc_ptr<char>
-cooked_index::handle_gnat_encoded_entry (cooked_index_entry *entry,
+cooked_index_shard::handle_gnat_encoded_entry (cooked_index_entry *entry,
-					 htab_t gnat_entries)
+					       htab_t gnat_entries)
 {
   std::string canonical = ada_decode (entry->name, false, false);
   if (canonical.empty ())
@@ -281,7 +281,7 @@ cooked_index::handle_gnat_encoded_entry (cooked_index_entry *entry,
 /* See cooked-index.h.  */
 
 void
-cooked_index::do_finalize ()
+cooked_index_shard::do_finalize ()
 {
   auto hash_name_ptr = [] (const void *p)
     {
@@ -378,8 +378,8 @@ cooked_index::do_finalize ()
 
 /* See cooked-index.h.  */
 
-cooked_index::range
+cooked_index_shard::range
-cooked_index::find (const std::string &name, bool completing) const
+cooked_index_shard::find (const std::string &name, bool completing) const
 {
   wait ();
 
@@ -441,7 +441,7 @@ cooked_index_vector::get_addrmaps () const
 cooked_index_vector::range
 cooked_index_vector::find (const std::string &name, bool completing) const
 {
-  std::vector<cooked_index::range> result_range;
+  std::vector<cooked_index_shard::range> result_range;
   result_range.reserve (m_vector.size ());
   for (auto &entry : m_vector)
     result_range.push_back (entry->find (name, completing));

gdb/dwarf2/cooked-index.h

@@ -232,11 +232,11 @@ class cooked_index_vector;
    Operations on the index are described below.  They are chosen to
    make it relatively simple to implement the symtab "quick"
    methods.  */
-class cooked_index
+class cooked_index_shard
 {
 public:
-  cooked_index () = default;
+  cooked_index_shard () = default;
-  DISABLE_COPY_AND_ASSIGN (cooked_index);
+  DISABLE_COPY_AND_ASSIGN (cooked_index_shard);
 
   /* Create a new cooked_index_entry and register it with this object.
      Entries are owned by this object.  The new item is returned.  */
@@ -353,7 +353,7 @@ public:
 
   /* A convenience typedef for the vector that is contained in this
      object.  */
-  typedef std::vector<std::unique_ptr<cooked_index>> vec_type;
+  using vec_type = std::vector<std::unique_ptr<cooked_index_shard>>;
 
   explicit cooked_index_vector (vec_type &&vec);
   DISABLE_COPY_AND_ASSIGN (cooked_index_vector);
@@ -378,7 +378,7 @@ public:
   }
 
   /* A range over a vector of subranges.  */
-  typedef range_chain<cooked_index::range> range;
+  using range = range_chain<cooked_index_shard::range>;
 
   /* Look up an entry by name.  Returns a range of all matching
      results.  If COMPLETING is true, then a larger range, suitable
@@ -388,7 +388,7 @@ public:
   /* Return a range of all the entries.  */
   range all_entries () const
   {
-    std::vector<cooked_index::range> result_range;
+    std::vector<cooked_index_shard::range> result_range;
     result_range.reserve (m_vector.size ());
     for (auto &entry : m_vector)
       result_range.push_back (entry->all_entries ());

gdb/dwarf2/read.c

@@ -6611,7 +6611,7 @@ public:
 					eq_cutu_reader,
 					htab_delete_entry<cutu_reader>,
 					xcalloc, xfree)),
-      m_index (new cooked_index)
+      m_index (new cooked_index_shard)
   {
   }
 
@@ -6657,9 +6657,9 @@ public:
     return m_index->add (die_offset, tag, flags, name, parent_entry, per_cu);
   }
 
-  /* Install the current addrmap into the index being constructed,
+  /* Install the current addrmap into the index shard being constructed,
      then transfer ownership of the index to the caller.  */
-  std::unique_ptr<cooked_index> release ()
+  std::unique_ptr<cooked_index_shard> release ()
   {
     m_index->install_addrmap (&m_addrmap);
     return std::move (m_index);
@@ -6692,8 +6692,8 @@ private:
   abbrev_cache m_abbrev_cache;
   /* A hash table of cutu_reader objects.  */
   htab_up m_reader_hash;
-  /* The index that is being constructed.  */
+  /* The index shard that is being constructed.  */
-  std::unique_ptr<cooked_index> m_index;
+  std::unique_ptr<cooked_index_shard> m_index;
 
   /* A writeable addrmap being constructed by this scanner.  */
   addrmap_mutable m_addrmap;
@@ -7102,7 +7102,7 @@ dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile)
   cooked_index_storage index_storage;
   create_all_units (per_objfile);
   build_type_psymtabs (per_objfile, &index_storage);
-  std::vector<std::unique_ptr<cooked_index>> indexes;
+  std::vector<std::unique_ptr<cooked_index_shard>> indexes;
 
   per_bfd->quick_file_names_table
     = create_quick_file_names_table (per_bfd->all_units.size ());
@@ -7128,7 +7128,7 @@ dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile)
        GDB's I/O system is not thread-safe.  run_on_main_thread could be
        used, but that would mean the messages are printed after the
        prompt, which looks weird.  */
-    using result_type = std::pair<std::unique_ptr<cooked_index>,
+    using result_type = std::pair<std::unique_ptr<cooked_index_shard>,
 				  std::vector<gdb_exception>>;
     std::vector<result_type> results
       = gdb::parallel_for_each (1, per_bfd->all_units.begin (),