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68 lines
1.4 KiB
C++
68 lines
1.4 KiB
C++
#ifndef VERS_UTILS_INCLUDED
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#define VERS_UTILS_INCLUDED
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#include "table.h"
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#include "sql_class.h"
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#include "vers_string.h"
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class MDL_auto_lock
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{
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THD *thd;
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TABLE_LIST &table;
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bool error;
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public:
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MDL_auto_lock(THD *_thd, TABLE_LIST &_table) :
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thd(_thd), table(_table)
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{
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DBUG_ASSERT(thd);
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table.mdl_request.init(MDL_key::TABLE, table.db, table.table_name, MDL_EXCLUSIVE, MDL_EXPLICIT);
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error= thd->mdl_context.acquire_lock(&table.mdl_request, thd->variables.lock_wait_timeout);
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}
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~MDL_auto_lock()
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{
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if (!error)
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{
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DBUG_ASSERT(table.mdl_request.ticket);
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thd->mdl_context.release_lock(table.mdl_request.ticket);
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table.mdl_request.ticket= NULL;
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}
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}
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bool acquire_error() const { return error; }
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};
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class Local_da : public Diagnostics_area
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{
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THD *thd;
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uint sql_error;
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Diagnostics_area *saved_da;
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public:
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Local_da(THD *_thd, uint _sql_error= 0) :
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Diagnostics_area(_thd->query_id, false, true),
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thd(_thd),
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sql_error(_sql_error),
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saved_da(_thd->get_stmt_da())
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{
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thd->set_stmt_da(this);
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}
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~Local_da()
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{
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if (saved_da)
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finish();
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}
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void finish()
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{
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DBUG_ASSERT(saved_da && thd);
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thd->set_stmt_da(saved_da);
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if (is_error())
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my_error(sql_error ? sql_error : sql_errno(), MYF(0), message());
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if (warn_count() > error_count())
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saved_da->copy_non_errors_from_wi(thd, get_warning_info());
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saved_da= NULL;
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}
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};
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#endif // VERS_UTILS_INCLUDED
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