Commit bf548fb9 authored by pem@mysql.com's avatar pem@mysql.com
Browse files

Renaming sp_pcontext members and methods; less cryptic and more consistent. 

Also added comments, and fixing some coding style (mostly in comments too).
There are no functional changes, so no tests or documentation needed.
(This was originally part of a bugfix, but it was decided to not include this
 in that patch; instead it's done separately.)
parent a1bf1138

sql/sp_head.cc

+11 −11
Original line number Diff line number Diff line
@@ -1214,7 +1214,7 @@ sp_head::execute_function(THD *thd, Item **argp, uint argcount, 
  DBUG_ENTER("sp_head::execute_function");

  DBUG_PRINT("info", ("function %s", m_name.str));



  params = m_pcont->context_pvars();

  params = m_pcont->context_var_count();



  /*

    Check that the function is called with all specified arguments.
@@ -1391,7 +1391,7 @@ bool 
sp_head::execute_procedure(THD *thd, List<Item> *args)

{

  bool err_status= FALSE;

  uint params = m_pcont->context_pvars();

  uint params = m_pcont->context_var_count();

  sp_rcontext *save_spcont, *octx;

  sp_rcontext *nctx = NULL;

  DBUG_ENTER("sp_head::execute_procedure");
@@ -1443,15 +1443,15 @@ sp_head::execute_procedure(THD *thd, List<Item> *args) 
    for (uint i= 0 ; i < params ; i++)

    {

      Item *arg_item= it_args++;

      sp_pvar_t *pvar= m_pcont->find_pvar(i);

      sp_variable_t *spvar= m_pcont->find_variable(i);



      if (!arg_item)

        break;



      if (!pvar)

      if (!spvar)

        continue;



      if (pvar->mode != sp_param_in)

      if (spvar->mode != sp_param_in)

      {

        if (!arg_item->is_splocal() && !item_is_user_var(arg_item))

        {
@@ -1461,7 +1461,7 @@ sp_head::execute_procedure(THD *thd, List<Item> *args) 
        }

      }



      if (pvar->mode == sp_param_out)

      if (spvar->mode == sp_param_out)

      {

        Item_null *null_item= new Item_null();
@@ -1521,9 +1521,9 @@ sp_head::execute_procedure(THD *thd, List<Item> *args) 
      if (!arg_item)

        break;



      sp_pvar_t *pvar= m_pcont->find_pvar(i);

      sp_variable_t *spvar= m_pcont->find_variable(i);



      if (pvar->mode == sp_param_in)

      if (spvar->mode == sp_param_in)

        continue;



      if (arg_item->is_splocal())
@@ -2388,7 +2388,7 @@ sp_instr_set::print(String *str) 
{

  /* set name@offset ... */

  int rsrv = SP_INSTR_UINT_MAXLEN+6;

  sp_pvar_t *var = m_ctx->find_pvar(m_offset);

  sp_variable_t *var = m_ctx->find_variable(m_offset);



  /* 'var' should always be non-null, but just in case... */

  if (var)
@@ -3004,8 +3004,8 @@ sp_instr_cfetch::execute(THD *thd, uint *nextp) 
void

sp_instr_cfetch::print(String *str)

{

  List_iterator_fast<struct sp_pvar> li(m_varlist);

  sp_pvar_t *pv;

  List_iterator_fast<struct sp_variable> li(m_varlist);

  sp_variable_t *pv;

  LEX_STRING n;

  my_bool found= m_ctx->find_cursor(m_cursor, &n);

  /* cfetch name@offset vars... */

sql/sp_head.h

+3 −3
Original line number Diff line number Diff line
@@ -44,7 +44,7 @@ class sp_instr; 
class sp_instr_opt_meta;

class sp_instr_jump_if_not;

struct sp_cond_type;

struct sp_pvar;

struct sp_variable;



class sp_name : public Sql_alloc

{
@@ -1074,7 +1074,7 @@ class sp_instr_cfetch : public sp_instr 


  virtual void print(String *str);



  void add_to_varlist(struct sp_pvar *var)

  void add_to_varlist(struct sp_variable *var)

  {

    m_varlist.push_back(var);

  }
@@ -1082,7 +1082,7 @@ class sp_instr_cfetch : public sp_instr 
private:



  uint m_cursor;

  List<struct sp_pvar> m_varlist;

  List<struct sp_variable> m_varlist;



}; // class sp_instr_cfetch : public sp_instr

sql/sp_pcontext.cc

+81 −80
Original line number Diff line number Diff line
@@ -27,9 +27,9 @@ 
#include "sp_head.h"



/*

 * Sanity check for SQLSTATEs. Will not check if it's really an existing

 * state (there are just too many), but will check length and bad characters.

 * Returns TRUE if it's ok, FALSE if it's bad.

  Sanity check for SQLSTATEs. Will not check if it's really an existing

  state (there are just too many), but will check length and bad characters.

  Returns TRUE if it's ok, FALSE if it's bad.

*/

bool

sp_cond_check(LEX_STRING *sqlstate)
@@ -51,25 +51,25 @@ sp_cond_check(LEX_STRING *sqlstate) 
}



sp_pcontext::sp_pcontext(sp_pcontext *prev)

  :Sql_alloc(), m_total_pvars(0), m_csubsize(0), m_hsubsize(0),

   m_handlers(0), m_parent(prev), m_pboundary(0)

  :Sql_alloc(), m_max_var_index(0), m_max_cursor_index(0), m_max_handler_index(0),

   m_context_handlers(0), m_parent(prev), m_pboundary(0)

{

  VOID(my_init_dynamic_array(&m_pvar, sizeof(sp_pvar_t *), 16, 8));

  VOID(my_init_dynamic_array(&m_vars, sizeof(sp_variable_t *), 16, 8));

  VOID(my_init_dynamic_array(&m_case_expr_id_lst, sizeof(int), 16, 8));

  VOID(my_init_dynamic_array(&m_cond, sizeof(sp_cond_type_t *), 16, 8));

  VOID(my_init_dynamic_array(&m_cursor, sizeof(LEX_STRING), 16, 8));

  VOID(my_init_dynamic_array(&m_handler, sizeof(sp_cond_type_t *), 16, 8));

  VOID(my_init_dynamic_array(&m_conds, sizeof(sp_cond_type_t *), 16, 8));

  VOID(my_init_dynamic_array(&m_cursors, sizeof(LEX_STRING), 16, 8));

  VOID(my_init_dynamic_array(&m_handlers, sizeof(sp_cond_type_t *), 16, 8));

  m_label.empty();

  m_children.empty();

  if (!prev)

  {

    m_poffset= m_coffset= 0;

    m_var_offset= m_cursor_offset= 0;

    m_num_case_exprs= 0;

  }

  else

  {

    m_poffset= prev->m_poffset + prev->m_total_pvars;

    m_coffset= prev->current_cursors();

    m_var_offset= prev->m_var_offset + prev->m_max_var_index;

    m_cursor_offset= prev->current_cursor_count();

    m_num_case_exprs= prev->get_num_case_exprs();

  }

}
@@ -85,11 +85,11 @@ sp_pcontext::destroy() 


  m_children.empty();

  m_label.empty();

  delete_dynamic(&m_pvar);

  delete_dynamic(&m_vars);

  delete_dynamic(&m_case_expr_id_lst);

  delete_dynamic(&m_cond);

  delete_dynamic(&m_cursor);

  delete_dynamic(&m_handler);

  delete_dynamic(&m_conds);

  delete_dynamic(&m_cursors);

  delete_dynamic(&m_handlers);

}



sp_pcontext *
@@ -105,15 +105,15 @@ sp_pcontext::push_context() 
sp_pcontext *

sp_pcontext::pop_context()

{

  m_parent->m_total_pvars= m_parent->m_total_pvars + m_total_pvars;

  m_parent->m_max_var_index+= m_max_var_index;



  uint submax= max_handlers();

  if (submax > m_parent->m_hsubsize)

    m_parent->m_hsubsize= submax;

  uint submax= max_handler_index();

  if (submax > m_parent->m_max_handler_index)

    m_parent->m_max_handler_index= submax;



  submax= max_cursors();

  if (submax > m_parent->m_csubsize)

    m_parent->m_csubsize= submax;

  submax= max_cursor_index();

  if (submax > m_parent->m_max_cursor_index)

    m_parent->m_max_cursor_index= submax;



  if (m_num_case_exprs > m_parent->m_num_case_exprs)

    m_parent->m_num_case_exprs= m_num_case_exprs;
@@ -130,12 +130,12 @@ sp_pcontext::diff_handlers(sp_pcontext *ctx, bool exclusive) 


  while (pctx && pctx != ctx)

  {

    n+= pctx->m_handlers;

    n+= pctx->m_context_handlers;

    last_ctx= pctx;

    pctx= pctx->parent_context();

  }

  if (pctx)

    return (exclusive && last_ctx ? n - last_ctx->m_handlers : n);

    return (exclusive && last_ctx ? n - last_ctx->m_context_handlers : n);

  return 0;			// Didn't find ctx

}
@@ -148,32 +148,33 @@ sp_pcontext::diff_cursors(sp_pcontext *ctx, bool exclusive) 


  while (pctx && pctx != ctx)

  {

    n+= pctx->m_cursor.elements;

    n+= pctx->m_cursors.elements;

    last_ctx= pctx;

    pctx= pctx->parent_context();

  }

  if (pctx)

    return  (exclusive && last_ctx ? n - last_ctx->m_cursor.elements : n);

    return  (exclusive && last_ctx ? n - last_ctx->m_cursors.elements : n);

  return 0;			// Didn't find ctx

}



/* This does a linear search (from newer to older variables, in case

** we have shadowed names).

** It's possible to have a more efficient allocation and search method,

** but it might not be worth it. The typical number of parameters and

** variables will in most cases be low (a handfull).

** ...and, this is only called during parsing.

/*

  This does a linear search (from newer to older variables, in case

  we have shadowed names).

  It's possible to have a more efficient allocation and search method,

  but it might not be worth it. The typical number of parameters and

  variables will in most cases be low (a handfull).

  ...and, this is only called during parsing.

*/

sp_pvar_t *

sp_pcontext::find_pvar(LEX_STRING *name, my_bool scoped)

sp_variable_t *

sp_pcontext::find_variable(LEX_STRING *name, my_bool scoped)

{

  uint i= m_pvar.elements - m_pboundary;

  uint i= m_vars.elements - m_pboundary;



  while (i--)

  {

    sp_pvar_t *p;

    sp_variable_t *p;



    get_dynamic(&m_pvar, (gptr)&p, i);

    get_dynamic(&m_vars, (gptr)&p, i);

    if (my_strnncoll(system_charset_info,

		     (const uchar *)name->str, name->length,

		     (const uchar *)p->name.str, p->name.length) == 0)
@@ -182,7 +183,7 @@ sp_pcontext::find_pvar(LEX_STRING *name, my_bool scoped) 
    }

  }

  if (!scoped && m_parent)

    return m_parent->find_pvar(name, scoped);

    return m_parent->find_variable(name, scoped);

  return NULL;

}
@@ -193,39 +194,39 @@ sp_pcontext::find_pvar(LEX_STRING *name, my_bool scoped) 
    at the end, of invokation. (Top frame only, so no recursion then.)

  - For printing of sp_instr_set. (Debug mode only.)

*/

sp_pvar_t *

sp_pcontext::find_pvar(uint offset)

sp_variable_t *

sp_pcontext::find_variable(uint offset)

{

  if (m_poffset <= offset && offset < m_poffset + m_pvar.elements)

  if (m_var_offset <= offset && offset < m_var_offset + m_vars.elements)

  {                           // This frame

    sp_pvar_t *p;

    sp_variable_t *p;



    get_dynamic(&m_pvar, (gptr)&p, offset - m_poffset);

    get_dynamic(&m_vars, (gptr)&p, offset - m_var_offset);

    return p;

  }

  if (m_parent)

    return m_parent->find_pvar(offset); // Some previous frame

    return m_parent->find_variable(offset); // Some previous frame

  return NULL;                  // index out of bounds

}



sp_pvar_t *

sp_pcontext::push_pvar(LEX_STRING *name, enum enum_field_types type,

sp_variable_t *

sp_pcontext::push_variable(LEX_STRING *name, enum enum_field_types type,

                           sp_param_mode_t mode)

{

  sp_pvar_t *p= (sp_pvar_t *)sql_alloc(sizeof(sp_pvar_t));

  sp_variable_t *p= (sp_variable_t *)sql_alloc(sizeof(sp_variable_t));



  if (!p)

    return NULL;



  ++m_total_pvars;

  ++m_max_var_index;



  p->name.str= name->str;

  p->name.length= name->length;

  p->type= type;

  p->mode= mode;

  p->offset= current_pvars();

  p->offset= current_var_count();

  p->dflt= NULL;

  insert_dynamic(&m_pvar, (gptr)&p);

  insert_dynamic(&m_vars, (gptr)&p);



  return p;

}
@@ -272,23 +273,23 @@ sp_pcontext::push_cond(LEX_STRING *name, sp_cond_type_t *val) 
    p->name.str= name->str;

    p->name.length= name->length;

    p->val= val;

    insert_dynamic(&m_cond, (gptr)&p);

    insert_dynamic(&m_conds, (gptr)&p);

  }

}



/*

 * See comment for find_pvar() above

  See comment for find_variable() above

*/

sp_cond_type_t *

sp_pcontext::find_cond(LEX_STRING *name, my_bool scoped)

{

  uint i= m_cond.elements;

  uint i= m_conds.elements;



  while (i--)

  {

    sp_cond_t *p;



    get_dynamic(&m_cond, (gptr)&p, i);

    get_dynamic(&m_conds, (gptr)&p, i);

    if (my_strnncoll(system_charset_info,

		     (const uchar *)name->str, name->length,

		     (const uchar *)p->name.str, p->name.length) == 0)
@@ -302,20 +303,20 @@ sp_pcontext::find_cond(LEX_STRING *name, my_bool scoped) 
}



/*

 * This only searches the current context, for error checking of

 * duplicates.

 * Returns TRUE if found.

  This only searches the current context, for error checking of

  duplicates.

  Returns TRUE if found.

*/

bool

sp_pcontext::find_handler(sp_cond_type_t *cond)

{

  uint i= m_handler.elements;

  uint i= m_handlers.elements;



  while (i--)

  {

    sp_cond_type_t *p;



    get_dynamic(&m_handler, (gptr)&p, i);

    get_dynamic(&m_handlers, (gptr)&p, i);

    if (cond->type == p->type)

    {

      switch (p->type)
@@ -341,31 +342,31 @@ sp_pcontext::push_cursor(LEX_STRING *name) 
{

  LEX_STRING n;



  if (m_cursor.elements == m_csubsize)

    m_csubsize+= 1;

  if (m_cursors.elements == m_max_cursor_index)

    m_max_cursor_index+= 1;

  n.str= name->str;

  n.length= name->length;

  insert_dynamic(&m_cursor, (gptr)&n);

  insert_dynamic(&m_cursors, (gptr)&n);

}



/*

 * See comment for find_pvar() above

  See comment for find_variable() above

*/

my_bool

sp_pcontext::find_cursor(LEX_STRING *name, uint *poff, my_bool scoped)

{

  uint i= m_cursor.elements;

  uint i= m_cursors.elements;



  while (i--)

  {

    LEX_STRING n;



    get_dynamic(&m_cursor, (gptr)&n, i);

    get_dynamic(&m_cursors, (gptr)&n, i);

    if (my_strnncoll(system_charset_info,

		     (const uchar *)name->str, name->length,

		     (const uchar *)n.str, n.length) == 0)

    {

      *poff= m_coffset + i;

      *poff= m_cursor_offset + i;

      return TRUE;

    }

  }
@@ -380,10 +381,10 @@ sp_pcontext::retrieve_field_definitions(List<create_field> *field_def_lst) 
{

  /* Put local/context fields in the result list. */



  for (uint i = 0; i < m_pvar.elements; ++i)

  for (uint i = 0; i < m_vars.elements; ++i)

  {

    sp_pvar_t *var_def;

    get_dynamic(&m_pvar, (gptr) &var_def, i);

    sp_variable_t *var_def;

    get_dynamic(&m_vars, (gptr) &var_def, i);



    field_def_lst->push_back(&var_def->field_def);

  }
@@ -404,13 +405,13 @@ sp_pcontext::retrieve_field_definitions(List<create_field> *field_def_lst) 
my_bool

sp_pcontext::find_cursor(uint offset, LEX_STRING *n)

{

  if (m_coffset <= offset && offset < m_coffset + m_cursor.elements)

  if (m_cursor_offset <= offset &&

      offset < m_cursor_offset + m_cursors.elements)

  {                           // This frame

    get_dynamic(&m_cursor, (gptr)n, offset - m_coffset);

    get_dynamic(&m_cursors, (gptr)n, offset - m_cursor_offset);

    return TRUE;

  }

  if (m_parent)

    return m_parent->find_cursor(offset, n); // Some previous frame

  return FALSE;                 // index out of bounds

}

sql/sp_pcontext.h

+78 −52
Original line number Diff line number Diff line
@@ -29,22 +29,23 @@ typedef enum 
  sp_param_inout

} sp_param_mode_t;



typedef struct sp_pvar

typedef struct sp_variable

{

  LEX_STRING name;

  enum enum_field_types type;

  sp_param_mode_t mode;

  

  /*

    offset -- basically, this is an index of variable in the scope of root

    parsing context. This means, that all variables in a stored routine

    have distinct indexes/offsets.

    offset -- this the index to the variable's value in the runtime frame.

    This is calculated during parsing and used when creating sp_instr_set

    instructions and Item_splocal items.

    I.e. values are set/referred by array indexing in runtime.

  */

  uint offset;



  Item *dflt;

  create_field field_def;

} sp_pvar_t;

} sp_variable_t;





#define SP_LAB_REF   0		// Unresolved reference (for goto)
@@ -76,8 +77,9 @@ typedef struct sp_cond_type 
  uint mysqlerr;

} sp_cond_type_t;



/* Sanity check for SQLSTATEs. Will not check if it's really an existing

 * state (there are just too many), but will check length bad characters.

/*

  Sanity check for SQLSTATEs. Will not check if it's really an existing

  state (there are just too many), but will check length bad characters.

*/

extern bool

sp_cond_check(LEX_STRING *sqlstate);
@@ -90,7 +92,17 @@ typedef struct sp_cond 




/*

  This seems to be an "SP parsing context" or something.

  The parse-time context, used to keep track on declared variables/parameters,

  conditions, handlers, cursors and labels, during parsing.

  sp_contexts are organized as a tree, with one object for each begin-end

  block, plus a root-context for the parameters.

  This is used during parsing for looking up defined names (e.g. declared

  variables and visible labels), for error checking, and to calculate offsets

  to be used at runtime. (During execution variable values, active handlers

  and cursors, etc, are referred to by an index in a stack.)

  The pcontext tree is also kept during execution and is used for error

  checking (e.g. correct number of parameters), and in the future, used by

  the debugger.

*/



class sp_pcontext : public Sql_alloc
@@ -134,50 +146,64 @@ class sp_pcontext : public Sql_alloc 
  // Parameters and variables

  //



  /*

    The maximum number of variables used in this and all child contexts

    In the root, this gives us the number of slots needed for variables

    during execution.

  */

  inline uint

  total_pvars()

  max_var_index()

  {

    return m_total_pvars;

    return m_max_var_index;

  }



  /*

    The current number of variables used in the parents (from the root),

    including this context.

  */

  inline uint

  current_pvars()

  current_var_count()

  {

    return m_poffset + m_pvar.elements;

    return m_var_offset + m_vars.elements;

  }



  /* The number of variables in this context alone */

  inline uint

  context_pvars()

  context_var_count()

  {

    return m_pvar.elements;

    return m_vars.elements;

  }



  /* Map index in this pcontext to runtime offset */

  inline uint

  pvar_context2index(uint i)

  var_context2runtime(uint i)

  {

    return m_poffset + i;

    return m_var_offset + i;

  }



  /* Set type of variable. 'i' is the offset from the top */

  inline void

  set_type(uint i, enum enum_field_types type)

  {

    sp_pvar_t *p= find_pvar(i);

    sp_variable_t *p= find_variable(i);



    if (p)

      p->type= type;

  }



  /* Set default value of variable. 'i' is the offset from the top */

  inline void

  set_default(uint i, Item *it)

  {

    sp_pvar_t *p= find_pvar(i);

    sp_variable_t *p= find_variable(i);



    if (p)

      p->dflt= it;

  }



  sp_pvar_t *

  push_pvar(LEX_STRING *name, enum enum_field_types type, sp_param_mode_t mode);

  sp_variable_t *

  push_variable(LEX_STRING *name, enum enum_field_types type,

                sp_param_mode_t mode);



  /*

    Retrieve definitions of fields from the current context and its
@@ -187,12 +213,12 @@ class sp_pcontext : public Sql_alloc 
  retrieve_field_definitions(List<create_field> *field_def_lst);



  // Find by name

  sp_pvar_t *

  find_pvar(LEX_STRING *name, my_bool scoped=0);

  sp_variable_t *

  find_variable(LEX_STRING *name, my_bool scoped=0);



  // Find by offset

  sp_pvar_t *

  find_pvar(uint offset);

  // Find by offset (from the top)

  sp_variable_t *

  find_variable(uint offset);



  /*

    Set the current scope boundary (for default values).
@@ -280,7 +306,7 @@ class sp_pcontext : public Sql_alloc 
  pop_cond(uint num)

  {

    while (num--)

      pop_dynamic(&m_cond);

      pop_dynamic(&m_conds);

  }



  sp_cond_type_t *
@@ -293,22 +319,22 @@ class sp_pcontext : public Sql_alloc 
  inline void

  push_handler(sp_cond_type_t *cond)

  {

    insert_dynamic(&m_handler, (gptr)&cond);

    insert_dynamic(&m_handlers, (gptr)&cond);

  }



  bool

  find_handler(sp_cond_type *cond);



  inline uint

  max_handlers()

  max_handler_index()

  {

    return m_hsubsize + m_handlers;

    return m_max_handler_index + m_context_handlers;

  }



  inline void

  add_handlers(uint n)

  {

    m_handlers+= n;

    m_context_handlers+= n;

  }



  //
@@ -326,51 +352,51 @@ class sp_pcontext : public Sql_alloc 
  find_cursor(uint offset, LEX_STRING *n);



  inline uint

  max_cursors()

  max_cursor_index()

  {

    return m_csubsize + m_cursor.elements;

    return m_max_cursor_index + m_cursors.elements;

  }



  inline uint

  current_cursors()

  current_cursor_count()

  {

    return m_coffset + m_cursor.elements;

    return m_cursor_offset + m_cursors.elements;

  }



protected:



  /*

    m_total_pvars -- number of variables (including all types of arguments)

    m_max_var_index -- number of variables (including all types of arguments)

    in this context including all children contexts.

    

    m_total_pvars >= m_pvar.elements.

    m_max_var_index >= m_vars.elements.



    m_total_pvars of the root parsing context contains number of all

    m_max_var_index of the root parsing context contains number of all

    variables (including arguments) in all enclosed contexts.

  */

  uint m_total_pvars;		

  uint m_max_var_index;		



  // The maximum sub context's framesizes

  uint m_csubsize;

  uint m_hsubsize;

  uint m_handlers;		// No. of handlers in this context

  uint m_max_cursor_index;

  uint m_max_handler_index;

  uint m_context_handlers;      // No. of handlers in this context



private:



  sp_pcontext *m_parent;	// Parent context



  /*

    m_poffset -- basically, this is an index of the first variable in this

    m_var_offset -- this is an index of the first variable in this

                    parsing context.

    

    m_poffset is 0 for root context.

    m_var_offset is 0 for root context.



    Since now each variable is stored in separate place, no reuse is done,

    so m_poffset is different for all enclosed contexts.

    so m_var_offset is different for all enclosed contexts.

  */

  uint m_poffset;

  uint m_var_offset;



  uint m_coffset;		// Cursor offset for this context

  uint m_cursor_offset;		// Cursor offset for this context



  /*

    Boundary for finding variables in this context. This is the number
@@ -382,11 +408,11 @@ class sp_pcontext : public Sql_alloc 


  int m_num_case_exprs;



  DYNAMIC_ARRAY m_pvar;		// Parameters/variables

  DYNAMIC_ARRAY m_vars;		// Parameters/variables

  DYNAMIC_ARRAY m_case_expr_id_lst; /* Stack of CASE expression ids. */

  DYNAMIC_ARRAY m_cond;		// Conditions

  DYNAMIC_ARRAY m_cursor;	// Cursors

  DYNAMIC_ARRAY m_handler;	// Handlers, for checking of duplicates

  DYNAMIC_ARRAY m_conds;        // Conditions

  DYNAMIC_ARRAY m_cursors;	// Cursors

  DYNAMIC_ARRAY m_handlers;	// Handlers, for checking for duplicates



  List<sp_label_t> m_label;	// The label list

sql/sp_rcontext.cc

+12 −12
Original line number Diff line number Diff line
@@ -73,16 +73,16 @@ bool sp_rcontext::init(THD *thd) 


  return

    !(m_handler=

      (sp_handler_t*)thd->alloc(m_root_parsing_ctx->max_handlers() *

      (sp_handler_t*)thd->alloc(m_root_parsing_ctx->max_handler_index() *

                                sizeof(sp_handler_t))) ||

    !(m_hstack=

      (uint*)thd->alloc(m_root_parsing_ctx->max_handlers() *

      (uint*)thd->alloc(m_root_parsing_ctx->max_handler_index() *

                        sizeof(uint))) ||

    !(m_in_handler=

      (uint*)thd->alloc(m_root_parsing_ctx->max_handlers() *

      (uint*)thd->alloc(m_root_parsing_ctx->max_handler_index() *

                        sizeof(uint))) ||

    !(m_cstack=

      (sp_cursor**)thd->alloc(m_root_parsing_ctx->max_cursors() *

      (sp_cursor**)thd->alloc(m_root_parsing_ctx->max_cursor_index() *

                              sizeof(sp_cursor*))) ||

    !(m_case_expr_holders=

      (Item_cache**)thd->calloc(m_root_parsing_ctx->get_num_case_exprs() *
@@ -105,12 +105,12 @@ sp_rcontext::init_var_table(THD *thd) 
{

  List<create_field> field_def_lst;



  if (!m_root_parsing_ctx->total_pvars())

  if (!m_root_parsing_ctx->max_var_index())

    return FALSE;



  m_root_parsing_ctx->retrieve_field_definitions(&field_def_lst);



  DBUG_ASSERT(field_def_lst.elements == m_root_parsing_ctx->total_pvars());

  DBUG_ASSERT(field_def_lst.elements == m_root_parsing_ctx->max_var_index());

  

  if (!(m_var_table= create_virtual_tmp_table(thd, field_def_lst)))

    return TRUE;
@@ -134,7 +134,7 @@ bool 
sp_rcontext::init_var_items()

{

  uint idx;

  uint num_vars= m_root_parsing_ctx->total_pvars();

  uint num_vars= m_root_parsing_ctx->max_var_index();



  if (!(m_var_items= (Item**) sql_alloc(num_vars * sizeof (Item *))))

    return TRUE;
@@ -381,7 +381,7 @@ sp_cursor::destroy() 




int

sp_cursor::fetch(THD *thd, List<struct sp_pvar> *vars)

sp_cursor::fetch(THD *thd, List<struct sp_variable> *vars)

{

  if (! server_side_cursor)

  {
@@ -528,9 +528,9 @@ int Select_fetch_into_spvars::prepare(List<Item> &fields, SELECT_LEX_UNIT *u) 


bool Select_fetch_into_spvars::send_data(List<Item> &items)

{

  List_iterator_fast<struct sp_pvar> pv_iter(*spvar_list);

  List_iterator_fast<struct sp_variable> spvar_iter(*spvar_list);

  List_iterator_fast<Item> item_iter(items);

  sp_pvar_t *pv;

  sp_variable_t *spvar;

  Item *item;



  /* Must be ensured by the caller */
@@ -540,9 +540,9 @@ bool Select_fetch_into_spvars::send_data(List<Item> &items) 
    Assign the row fetched from a server side cursor to stored

    procedure variables.

  */

  for (; pv= pv_iter++, item= item_iter++; )

  for (; spvar= spvar_iter++, item= item_iter++; )

  {

    if (thd->spcont->set_variable(thd, pv->offset, item))

    if (thd->spcont->set_variable(thd, spvar->offset, item))

      return TRUE;

  }

  return FALSE;