change tree to use qsort_cmp2 - compare function with 3 instead of 2 arguments

include/global.h:
  qsort_cmp2
include/my_tree.h:
  use qsort_cmp2
myisam/ft_boolean_search.c:
  use qsort_cmp2
myisam/ft_nlq_search.c:
  use qsort_cmp2
myisam/ft_parser.c:
  use qsort_cmp2
myisam/ft_stopwords.c:
  use qsort_cmp2
myisam/myisampack.c:
  use qsort_cmp2
mysys/tree.c:
  use qsort_cmp2
sql/sql_analyse.cc:
  use qsort_cmp2
sql/sql_analyse.h:
  use qsort_cmp2

include/global.h

@@ -349,6 +349,7 @@ typedef int	pshort;		/* Mixed prototypes can't take short int */
 typedef double	pfloat;		/* Mixed prototypes can't take float */
 #endif
 typedef int	(*qsort_cmp)(const void *,const void *);
+typedef int	(*qsort_cmp2)(void*, const void *,const void *);
 #ifdef HAVE_mit_thread
 #define qsort_t void
 #undef QSORT_TYPE_IS_VOID

include/my_tree.h

@@ -50,7 +50,8 @@ typedef struct st_tree {
   TREE_ELEMENT *root,null_element;
   TREE_ELEMENT **parents[MAX_TREE_HIGHT];
   uint offset_to_key,elements_in_tree,size_of_element;
-  qsort_cmp compare;
+  qsort_cmp2 compare;
+  void* cmp_arg;
   MEM_ROOT mem_root;
   my_bool with_delete;
   void (*free)(void *);
@@ -58,7 +59,7 @@ typedef struct st_tree {
 
 	/* Functions on hole tree */
 void init_tree(TREE *tree,uint default_alloc_size, int element_size,
-	       qsort_cmp compare, my_bool with_delete,
+	       qsort_cmp2 compare, my_bool with_delete,
 	       void (*free_element)(void*));
 void delete_tree(TREE*);
 #define is_tree_inited(tree) ((tree)->root != 0)

myisam/ft_boolean_search.c

@@ -41,7 +41,8 @@ typedef struct st_ft_superdoc {
     ALL_IN_ONE *aio;
 } FT_SUPERDOC;
 
-static int FT_SUPERDOC_cmp(FT_SUPERDOC *p1, FT_SUPERDOC *p2)
+static int FT_SUPERDOC_cmp(void* cmp_arg __attribute__((unused)),
+			   FT_SUPERDOC *p1, FT_SUPERDOC *p2)
 {
   if (p1->doc.dpos < p2->doc.dpos)
     return -1;

myisam/ft_nlq_search.c

@@ -35,7 +35,8 @@ typedef struct st_ft_superdoc {
     double   tmp_weight;
 } FT_SUPERDOC;
 
-static int FT_SUPERDOC_cmp(FT_SUPERDOC *p1, FT_SUPERDOC *p2)
+static int FT_SUPERDOC_cmp(void* cmp_arg __attribute__((unused)),
+			   FT_SUPERDOC *p1, FT_SUPERDOC *p2)
 {
   if (p1->doc.dpos < p2->doc.dpos)
     return -1;
@@ -162,7 +163,7 @@ FT_DOCLIST *ft_nlq_search(MI_INFO *info, uint keynr, byte *query,
 
   bzero(&allocated_wtree,sizeof(allocated_wtree));
 
-  init_tree(&aio.dtree,0,sizeof(FT_SUPERDOC),(qsort_cmp)&FT_SUPERDOC_cmp,0,
+  init_tree(&aio.dtree,0,sizeof(FT_SUPERDOC),(qsort_cmp2)&FT_SUPERDOC_cmp,0,
             NULL);
 
   if(!(wtree=ft_parse(&allocated_wtree,query,query_len)))

myisam/ft_parser.c

@@ -38,7 +38,8 @@ typedef struct st_ft_docstat {
   byte *keybuf;
 } FT_DOCSTAT;
 
-static int FT_WORD_cmp(FT_WORD *w1, FT_WORD *w2)
+static int FT_WORD_cmp(void* cmp_arg __attribute__((unused)),
+		       FT_WORD *w1, FT_WORD *w2)
 {
   return _mi_compare_text(default_charset_info,
 			  (uchar*) w1->pos,w1->len,
@@ -225,7 +226,7 @@ TREE * ft_parse(TREE *wtree, byte *doc, int doclen)
 
   if (!is_tree_inited(wtree))
   {
-    init_tree(wtree,0,sizeof(FT_WORD),(qsort_cmp)&FT_WORD_cmp,0,NULL);
+    init_tree(wtree,0,sizeof(FT_WORD),(qsort_cmp2)&FT_WORD_cmp,0,NULL);
   }
 
   while (ft_simple_get_word(&doc,end,&w))

myisam/ft_stopwords.c

@@ -25,7 +25,8 @@ typedef struct st_ft_stopwords {
 
 static TREE *stopwords3=NULL;
 
-static int FT_STOPWORD_cmp(FT_STOPWORD *w1, FT_STOPWORD *w2)
+static int FT_STOPWORD_cmp(void* cmp_arg __attribute__((unused)),
+			   FT_STOPWORD *w1, FT_STOPWORD *w2)
 {
   return _mi_compare_text(default_charset_info,
 			  (uchar *)w1->pos,w1->len,
@@ -40,7 +41,7 @@ int ft_init_stopwords(const char **sws)
   if(!stopwords3)
   {
     if(!(stopwords3=(TREE *)my_malloc(sizeof(TREE),MYF(0)))) return -1;
-    init_tree(stopwords3,0,sizeof(FT_STOPWORD),(qsort_cmp)&FT_STOPWORD_cmp,0,
+    init_tree(stopwords3,0,sizeof(FT_STOPWORD),(qsort_cmp2)&FT_STOPWORD_cmp,0,
 	      NULL);
   }
 

myisam/myisampack.c

@@ -124,7 +124,8 @@ static void free_counts_and_tree_and_queue(HUFF_TREE *huff_trees,
 					   uint trees,
 					   HUFF_COUNTS *huff_counts,
 					   uint fields);
-static int compare_tree(const uchar *s,const uchar *t);
+static int compare_tree(void* cmp_arg __attribute__((unused)),
+			const uchar *s,const uchar *t);
 static int get_statistic(MRG_INFO *mrg,HUFF_COUNTS *huff_counts);
 static void check_counts(HUFF_COUNTS *huff_counts,uint trees,
 			 my_off_t records);
@@ -673,7 +674,7 @@ static HUFF_COUNTS *init_huff_count(MI_INFO *info,my_off_t records)
 	  (type == FIELD_NORMAL ||
 	   type == FIELD_SKIPP_ZERO))
 	count[i].max_zero_fill= count[i].field_length;
-      init_tree(&count[i].int_tree,0,-1,(qsort_cmp) compare_tree,0,NULL);
+      init_tree(&count[i].int_tree,0,-1,(qsort_cmp2) compare_tree,0,NULL);
       if (records && type != FIELD_BLOB && type != FIELD_VARCHAR)
 	count[i].tree_pos=count[i].tree_buff =
 	  my_malloc(count[i].field_length > 1 ? tree_buff_length : 2,
@@ -1289,7 +1290,8 @@ static int make_huff_tree(HUFF_TREE *huff_tree, HUFF_COUNTS *huff_counts)
   return 0;
 }
 
-static int compare_tree(register const uchar *s, register const uchar *t)
+static int compare_tree(void* cmp_arg __attribute__((unused)),
+			register const uchar *s, register const uchar *t)
 {
   uint length;
   for (length=global_count->field_length; length-- ;)

mysys/tree.c

@@ -63,7 +63,7 @@ static void rb_delete_fixup(TREE *tree,TREE_ELEMENT ***parent);
 	/* The actuall code for handling binary trees */
 
 void init_tree(TREE *tree, uint default_alloc_size, int size,
-	       qsort_cmp compare, my_bool with_delete,
+	       qsort_cmp2 compare, my_bool with_delete,
 	       void (*free_element) (void *))
 {
   DBUG_ENTER("init_tree");
@@ -77,6 +77,7 @@ void init_tree(TREE *tree, uint default_alloc_size, int size,
   tree->size_of_element=size > 0 ? (uint) size : 0;
   tree->free=free_element;
   tree->elements_in_tree=0;
+  tree->cmp_arg = 0;
   tree->null_element.colour=BLACK;
   tree->null_element.left=tree->null_element.right=0;
   if (!free_element && size >= 0 &&
@@ -152,7 +153,8 @@ TREE_ELEMENT *tree_insert(TREE *tree, void *key, uint key_size)
   for (;;)
   {
     if (element == &tree->null_element ||
-	(cmp=(*tree->compare)(ELEMENT_KEY(tree,element),key)) == 0)
+	(cmp=(*tree->compare)(tree->cmp_arg,
+			      ELEMENT_KEY(tree,element),key)) == 0)
       break;
     if (cmp < 0)
     {
@@ -212,7 +214,8 @@ int tree_delete(TREE *tree, void *key)
   {
     if (element == &tree->null_element)
       return 1;				/* Was not in tree */
-    if ((cmp=(*tree->compare)(ELEMENT_KEY(tree,element),key)) == 0)
+    if ((cmp=(*tree->compare)(tree->cmp_arg,
+			      ELEMENT_KEY(tree,element),key)) == 0)
       break;
     if (cmp < 0)
     {
@@ -266,7 +269,8 @@ void *tree_search(TREE *tree, void *key)
   {
     if (element == &tree->null_element)
       return (void*) 0;
-    if ((cmp=(*tree->compare)(ELEMENT_KEY(tree,element),key)) == 0)
+    if ((cmp=(*tree->compare)(tree->cmp_arg,
+			      ELEMENT_KEY(tree,element),key)) == 0)
       return ELEMENT_KEY(tree,element);
     if (cmp < 0)
       element=element->right;

sql/sql_analyse.cc

@@ -38,6 +38,37 @@
 #define UINT_MAX24	  0xffffff
 #define UINT_MAX32	  0xffffffff
 
+int sortcmp2(void* cmp_arg __attribute__((unused)),
+	     const String *a,const String *b)
+{
+  return sortcmp(a,b);
+}
+
+int stringcmp2(void* cmp_arg __attribute__((unused)),
+	     const String *a,const String *b)
+{
+  return stringcmp(a,b);
+}
+
+int compare_double2(void* cmp_arg __attribute__((unused)),
+		    const double *s, const double *t)
+{
+  return compare_double(s,t);
+}
+
+int compare_longlong2(void* cmp_arg __attribute__((unused)),
+		      const longlong *s, const longlong *t)
+{
+  return compare_longlong(s,t);
+}
+
+int compare_ulonglong2(void* cmp_arg __attribute__((unused)),
+		       const ulonglong *s, const ulonglong *t)
+{
+  return compare_ulonglong(s,t);
+}
+
+
 Procedure *
 proc_analyse_init(THD *thd, ORDER *param, select_result *result,
 		  List<Item> &field_list)

sql/sql_analyse.h

@@ -53,8 +53,14 @@ uint check_ulonglong(const char *str, uint length);
 bool get_ev_num_info(EV_NUM_INFO *ev_info, NUM_INFO *info, const char *num);
 bool test_if_number(NUM_INFO *info, const char *str, uint str_len);
 int compare_double(const double *s, const double *t);
+int compare_double2(void* cmp_arg __attribute__((unused)),
+		    const double *s, const double *t);
 int compare_longlong(const longlong *s, const longlong *t);
+int compare_longlong2(void* cmp_arg __attribute__((unused)),
+		      const longlong *s, const longlong *t);
 int compare_ulonglong(const ulonglong *s, const ulonglong *t);
+int compare_ulonglong2(void* cmp_arg __attribute__((unused)),
+		       const ulonglong *s, const ulonglong *t);
 Procedure *proc_analyse_init(THD *thd, ORDER *param, select_result *result,
 			     List<Item> &field_list);
 void free_string(String*);
@@ -91,6 +97,11 @@ class field_info :public Sql_alloc
 int collect_string(String *element, element_count count,
 		   TREE_INFO *info);
 
+int sortcmp2(void* cmp_arg __attribute__((unused)),
+	     const String *a,const String *b);
+int stringcmp2(void* cmp_arg __attribute__((unused)),
+	     const String *a,const String *b);
+
 class field_str :public field_info
 {
   String      min_arg, max_arg;
@@ -106,7 +117,7 @@ class field_str :public field_info
     must_be_blob(0), was_zero_fill(0),
     was_maybe_zerofill(0), can_be_still_num(1)
     { init_tree(&tree, 0, sizeof(String), a->binary ?
-		(qsort_cmp) stringcmp : (qsort_cmp) sortcmp,
+		(qsort_cmp2) stringcmp2 : (qsort_cmp2) sortcmp2,
 		0, (void (*)(void*)) free_string); };
 
   void	 add();
@@ -146,7 +157,7 @@ class field_real: public field_info
   field_real(Item* a, analyse* b) :field_info(a,b),
     min_arg(0), max_arg(0),  sum(0), sum_sqr(0), max_notzero_dec_len(0)
     { init_tree(&tree, 0, sizeof(double),
-		(qsort_cmp) compare_double, 0, NULL); }
+		(qsort_cmp2) compare_double2, 0, NULL); }
 
   void	 add();
   void	 get_opt_type(String*, ha_rows);
@@ -192,7 +203,7 @@ class field_longlong: public field_info
   field_longlong(Item* a, analyse* b) :field_info(a,b), 
     min_arg(0), max_arg(0), sum(0), sum_sqr(0)
     { init_tree(&tree, 0, sizeof(longlong),
-		(qsort_cmp) compare_longlong, 0, NULL); }
+		(qsort_cmp2) compare_longlong2, 0, NULL); }
 
   void	 add();
   void	 get_opt_type(String*, ha_rows);
@@ -237,7 +248,7 @@ class field_ulonglong: public field_info
   field_ulonglong(Item* a, analyse * b) :field_info(a,b),
     min_arg(0), max_arg(0), sum(0),sum_sqr(0)
     { init_tree(&tree, 0, sizeof(ulonglong),
-		(qsort_cmp) compare_ulonglong, 0, NULL); }
+		(qsort_cmp2) compare_ulonglong2, 0, NULL); }
   void	 add();
   void	 get_opt_type(String*, ha_rows);
   String *get_min_arg(String *s) { s->set(min_arg); return s; }