Now ftparser does not need to bother about memory management -

it can tell MySQL to make a copy of everything (bug#17123)


include/mysql/plugin.h:
  Now ftparser does not need to bother about memory management -
  it can tell MySQL to make a copy of everything (bug#17123)
  MYSQL_FTFLAGS_NEED_COPY flag
storage/myisam/ft_boolean_search.c:
  param->flags
storage/myisam/ft_nlq_search.c:
  param->flags. ft_parse takes a mem_root as an argument
storage/myisam/ft_parser.c:
  ftparser takes a memroot as an argument. words are copied there, if necessary.
  memroot is reset for every parsing and free'd at the end of the statement.
storage/myisam/ft_update.c:
  ftparser takes a memroot as an argument. words are copied there, if necessary.
  memroot is reset for every parsing and free'd at the end of the statement.
storage/myisam/ftdefs.h:
  ftparser takes a memroot as an argument. words are copied there, if necessary.
  memroot is reset for every parsing and free'd at the end of the statement.
storage/myisam/mi_check.c:
  ftparser takes a memroot as an argument. words are copied there, if necessary
storage/myisam/myisamdef.h:
  memroot for ftparser in MI_INFO and MI_SORT_PARAM
storage/myisam/sort.c:
  free ftparser memroot

1 files changed, 15 insertions, 1 deletions

diff --git a/include/mysql/plugin.h b/include/mysql/plugin.h
index a47b1099eef..728b62ab2f4 100644
--- a/include/mysql/plugin.h
+++ b/include/mysql/plugin.h
@@ -201,6 +201,17 @@ typedef struct st_mysql_ftparser_boolean_info
   char *quot;
 } MYSQL_FTPARSER_BOOLEAN_INFO;
 
+/*
+  The following flag means that buffer with a string (document, word)
+  may be overwritten by the caller before the end of the parsing (that is
+  before st_mysql_ftparser::deinit() call). If one needs the string
+  to survive between two successive calls of the parsing function, she
+  needs to save a copy of it. The flag may be set by MySQL before calling
+  st_mysql_ftparser::parse(), or it may be set by a plugin before calling
+  st_mysql_ftparser_param::mysql_parse() or
+  st_mysql_ftparser_param::mysql_add_word().
+*/
+#define MYSQL_FTFLAGS_NEED_COPY 1
 
 /*
   An argument of the full-text parser plugin. This structure is
@@ -234,8 +245,10 @@ typedef struct st_mysql_ftparser_boolean_info
 
   length: Length of the document or query string, in bytes.
 
+  flags: See MYSQL_FTFLAGS_* constants above.
+
   mode: The parsing mode.  With boolean operators, with stopwords, or
-  nothing.  See MYSQL_FTPARSER_* constants above.
+  nothing.  See  enum_ftparser_mode above.
 */
 
 typedef struct st_mysql_ftparser_param
@@ -250,6 +263,7 @@ typedef struct st_mysql_ftparser_param
   struct charset_info_st *cs;
   char *doc;
   int length;
+  int flags;
   enum enum_ftparser_mode mode;
 } MYSQL_FTPARSER_PARAM;