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Add comments to dwarf2/abbrev-cache.h

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This patch started when I noticed that the unordered_set include
wasn't needed in abbrev-cache.h.  (That was probably leftover from
some earlier implementation of the class.)  Then, I noticed that the
class itself was under-commented.  This patch fixes both issues.
This commit is contained in:
Tom Tromey
2022-04-16 13:58:34 -06:00
parent 3beda815bd
commit 3c8184c43d
1 changed files with 9 additions and 1 deletions
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10
gdb/dwarf2/abbrev-cache.h
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@ -21,15 +21,18 @@
#define GDB_DWARF2_ABBREV_CACHE_H #define GDB_DWARF2_ABBREV_CACHE_H
#include "dwarf2/abbrev.h" #include "dwarf2/abbrev.h"
#include <unordered_set>
#include "gdbtypes.h" #include "gdbtypes.h"
/* An abbrev cache holds abbrev tables for easier reuse. */
class abbrev_cache class abbrev_cache
{ {
public: public:
abbrev_cache (); abbrev_cache ();
DISABLE_COPY_AND_ASSIGN (abbrev_cache); DISABLE_COPY_AND_ASSIGN (abbrev_cache);
/* Find an abbrev table coming from the abbrev section SECTION at
offset OFFSET. Return the table, or nullptr if it has not yet
been registered. */
abbrev_table *find (struct dwarf2_section_info *section, sect_offset offset) abbrev_table *find (struct dwarf2_section_info *section, sect_offset offset)
{ {
search_key key = { section, offset }; search_key key = { section, offset };
@ -38,6 +41,11 @@ public:
to_underlying (offset)); to_underlying (offset));
} }
/* Add TABLE to this cache. Ownership of TABLE is transferred to
the cache. Note that a table at a given section+offset may only
be registered once -- a violation of this will cause an assert.
To avoid this, call the 'find' method first, to see if the table
has already been read. */
void add (abbrev_table_up table); void add (abbrev_table_up table);
private: private: