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sp_rcontext::sp cleanup

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- Renaming sp_rcontext::sp to sp_rcontext:m_sp for consistency
  with other sp_rcontext_members, and for consistency with the
  same purpose member Item_sp_variable::m_sp.

- Passing a "const sp_head*" pointer to sp_rcontext::sp_rcontext()
  and to sp_rcontext::create().
  Initializing sp_rcontext::m_sp right in the constructor
  instead of having a separate initialization after "new sp_rcontext"
  or sp_rcontext::create().

- Adding the "const" qualifier to sp_rcontext::m_sp and Item_sp_variable::m_sp
This commit is contained in:
Alexander Barkov 2017-10-19 12:57:00 +04:00
parent f5e09b5f8f
commit e156db85a7
5 changed files with 24 additions and 30 deletions
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18
sql/item.cc
View File

@ -1778,7 +1778,7 @@ bool Item_splocal::fix_fields(THD *thd, Item **ref)
Item *
Item_splocal::this_item()
{
DBUG_ASSERT(m_sp == m_thd->spcont->sp);
DBUG_ASSERT(m_sp == m_thd->spcont->m_sp);
DBUG_ASSERT(fixed);
return m_thd->spcont->get_item(m_var_idx);
}
@ -1786,7 +1786,7 @@ Item_splocal::this_item()
const Item *
Item_splocal::this_item() const
{
DBUG_ASSERT(m_sp == m_thd->spcont->sp);
DBUG_ASSERT(m_sp == m_thd->spcont->m_sp);
DBUG_ASSERT(fixed);
return m_thd->spcont->get_item(m_var_idx);
}
@ -1795,7 +1795,7 @@ Item_splocal::this_item() const
Item **
Item_splocal::this_item_addr(THD *thd, Item **)
{
DBUG_ASSERT(m_sp == thd->spcont->sp);
DBUG_ASSERT(m_sp == thd->spcont->m_sp);
DBUG_ASSERT(fixed);
return thd->spcont->get_item_addr(m_var_idx);
}
@ -1902,7 +1902,7 @@ bool Item_splocal_row_field::fix_fields(THD *thd, Item **ref)
Item *
Item_splocal_row_field::this_item()
{
DBUG_ASSERT(m_sp == m_thd->spcont->sp);
DBUG_ASSERT(m_sp == m_thd->spcont->m_sp);
DBUG_ASSERT(fixed);
return m_thd->spcont->get_item(m_var_idx)->element_index(m_field_idx);
}
@ -1911,7 +1911,7 @@ Item_splocal_row_field::this_item()
const Item *
Item_splocal_row_field::this_item() const
{
DBUG_ASSERT(m_sp == m_thd->spcont->sp);
DBUG_ASSERT(m_sp == m_thd->spcont->m_sp);
DBUG_ASSERT(fixed);
return m_thd->spcont->get_item(m_var_idx)->element_index(m_field_idx);
}
@ -1920,7 +1920,7 @@ Item_splocal_row_field::this_item() const
Item **
Item_splocal_row_field::this_item_addr(THD *thd, Item **)
{
DBUG_ASSERT(m_sp == thd->spcont->sp);
DBUG_ASSERT(m_sp == thd->spcont->m_sp);
DBUG_ASSERT(fixed);
return thd->spcont->get_item(m_var_idx)->addr(m_field_idx);
}
@ -2008,7 +2008,7 @@ bool Item_case_expr::fix_fields(THD *thd, Item **ref)
Item *
Item_case_expr::this_item()
{
DBUG_ASSERT(m_sp == m_thd->spcont->sp);
DBUG_ASSERT(m_sp == m_thd->spcont->m_sp);
return m_thd->spcont->get_case_expr(m_case_expr_id);
}
@ -2018,7 +2018,7 @@ Item_case_expr::this_item()
const Item *
Item_case_expr::this_item() const
{
DBUG_ASSERT(m_sp == m_thd->spcont->sp);
DBUG_ASSERT(m_sp == m_thd->spcont->m_sp);
return m_thd->spcont->get_case_expr(m_case_expr_id);
}
@ -2027,7 +2027,7 @@ Item_case_expr::this_item() const
Item **
Item_case_expr::this_item_addr(THD *thd, Item **)
{
DBUG_ASSERT(m_sp == thd->spcont->sp);
DBUG_ASSERT(m_sp == thd->spcont->m_sp);
return thd->spcont->get_case_expr_addr(m_case_expr_id);
}

2
sql/item.h
View File

@ -2271,7 +2271,7 @@ public:
Routine to which this Item_splocal belongs. Used for checking if correct
runtime context is used for variable handling.
*/
sp_head *m_sp;
const sp_head *m_sp;
#endif
public:

18
sql/sp_head.cc
View File

@ -1444,7 +1444,7 @@ sp_rcontext *sp_head::rcontext_create(THD *thd, Field *ret_value,
bool switch_security_ctx)
{
if (!(m_flags & HAS_COLUMN_TYPE_REFS))
return sp_rcontext::create(thd, m_pcont, ret_value, *defs);
return sp_rcontext::create(thd, this, m_pcont, ret_value, *defs);
sp_rcontext *res= NULL;
#ifndef NO_EMBEDDED_ACCESS_CHECKS
Security_context *save_security_ctx;
@ -1453,7 +1453,7 @@ sp_rcontext *sp_head::rcontext_create(THD *thd, Field *ret_value,
return NULL;
#endif
if (!defs->resolve_type_refs(thd))
res= sp_rcontext::create(thd, m_pcont, ret_value, *defs);
res= sp_rcontext::create(thd, this, m_pcont, ret_value, *defs);
#ifndef NO_EMBEDDED_ACCESS_CHECKS
if (switch_security_ctx)
m_security_ctx.restore_security_context(thd, save_security_ctx);
@ -1590,10 +1590,6 @@ sp_head::execute_trigger(THD *thd,
goto err_with_cleanup;
}
#ifndef DBUG_OFF
nctx->sp= this;
#endif
thd->spcont= nctx;
err_status= execute(thd, FALSE);
@ -1714,10 +1710,6 @@ sp_head::execute_function(THD *thd, Item **argp, uint argcount,
*/
thd->restore_active_arena(&call_arena, &backup_arena);
#ifndef DBUG_OFF
nctx->sp= this;
#endif
/* Pass arguments. */
for (arg_no= 0; arg_no < argcount; arg_no++)
{
@ -1920,9 +1912,6 @@ sp_head::execute_procedure(THD *thd, List<Item> *args)
DBUG_RETURN(TRUE);
}
#ifndef DBUG_OFF
octx->sp= 0;
#endif
thd->spcont= octx;
/* set callers_arena to thd, for upper-level function to work */
@ -1935,9 +1924,6 @@ sp_head::execute_procedure(THD *thd, List<Item> *args)
thd->spcont= save_spcont;
DBUG_RETURN(TRUE);
}
#ifndef DBUG_OFF
nctx->sp= this;
#endif
if (params > 0)
{

10
sql/sp_rcontext.cc
View File

@ -35,10 +35,14 @@
///////////////////////////////////////////////////////////////////////////
sp_rcontext::sp_rcontext(const sp_pcontext *root_parsing_ctx,
sp_rcontext::sp_rcontext(const sp_head *owner,
const sp_pcontext *root_parsing_ctx,
Field *return_value_fld,
bool in_sub_stmt)
:end_partial_result_set(false),
#ifndef DBUG_OFF
m_sp(owner),
#endif
m_root_parsing_ctx(root_parsing_ctx),
m_var_table(NULL),
m_return_value_fld(return_value_fld),
@ -59,11 +63,13 @@ sp_rcontext::~sp_rcontext()
sp_rcontext *sp_rcontext::create(THD *thd,
const sp_head *owner,
const sp_pcontext *root_parsing_ctx,
Field *return_value_fld,
Row_definition_list &field_def_lst)
{
sp_rcontext *ctx= new (thd->mem_root) sp_rcontext(root_parsing_ctx,
sp_rcontext *ctx= new (thd->mem_root) sp_rcontext(owner,
root_parsing_ctx,
return_value_fld,
thd->in_sub_stmt);
if (!ctx)

6
sql/sp_rcontext.h
View File

@ -70,6 +70,7 @@ public:
///
/// @return valid sp_rcontext object or NULL in case of OOM-error.
static sp_rcontext *create(THD *thd,
const sp_head *owner,
const sp_pcontext *root_parsing_ctx,
Field *return_value_fld,
Row_definition_list &defs);
@ -77,7 +78,8 @@ public:
~sp_rcontext();
private:
sp_rcontext(const sp_pcontext *root_parsing_ctx,
sp_rcontext(const sp_head *owner,
const sp_pcontext *root_parsing_ctx,
Field *return_value_fld,
bool in_sub_stmt);
@ -180,7 +182,7 @@ public:
#ifndef DBUG_OFF
/// The stored program for which this runtime context is created. Used for
/// checking if correct runtime context is used for variable handling.
sp_head *sp;
const sp_head *m_sp;
#endif
/////////////////////////////////////////////////////////////////////////