dd::sdi_utils Namespace Reference

Classes
class	Closure_error_handler
	Class template which derives from Internal_error_handler and overrides handle_condition with the CONDITION_HANDLER_CLOS template parameter. More...

Functions
bool	checked_return (bool ret)
	In debug mode, check that a true argument is paired with thd->is_error() or thd->killed being set. More...
bool	mdl_lock (THD *thd, MDL_key::enum_mdl_namespace ns, const String_type &schema_name, const String_type &object_name, enum_mdl_type mt=MDL_EXCLUSIVE, enum_mdl_duration md=MDL_TRANSACTION)
	Convenience function for obtaining MDL. More...
template<typename T >
const T &	ptr_as_cref (const T *p)
template<typename CH_CLOS , typename ACTION_CLOS >
bool	handle_errors (THD *thd, CH_CLOS &&chc, ACTION_CLOS &&ac)
	Set up a custom error handler to use for errors from the execution of a closure. More...
template<typename P_TYPE , typename CLOS_TYPE >
std::unique_ptr< P_TYPE, CLOS_TYPE >	make_guard (P_TYPE *p, CLOS_TYPE &&clos)

Function Documentation

checked_return()

bool dd::sdi_utils::checked_return ( bool  ret )

inline

In debug mode, check that a true argument is paired with thd->is_error() or thd->killed being set.

In optimized mode it turns into a noop.

Parameters

[in]

ret

return value to check

Returns

same as argument passed in

NDEBUG

handle_errors()

template<typename CH_CLOS , typename ACTION_CLOS >

bool dd::sdi_utils::handle_errors	(	THD *	thd,
		CH_CLOS &&	chc,
		ACTION_CLOS &&	ac
	)

Set up a custom error handler to use for errors from the execution of a closure.

Parameters

thd	thread context
chc	closure which implements the Internal_error_handler::handle_condition override
ac	closure action for which error conditions should be handled.

Return values

true	if an error occurs
false	otherwise

make_guard()

template<typename P_TYPE , typename CLOS_TYPE >

std::unique_ptr< P_TYPE, CLOS_TYPE > dd::sdi_utils::make_guard	(	P_TYPE *	p,
		CLOS_TYPE &&	clos
	)

mdl_lock()

bool dd::sdi_utils::mdl_lock ( THD *  thd, MDL_key::enum_mdl_namespace  ns, const String_type &  schema_name, const String_type &  object_name, enum_mdl_type  mt = MDL_EXCLUSIVE, enum_mdl_duration  md = MDL_TRANSACTION  )

inline

Convenience function for obtaining MDL.

Sets up the MDL_request struct and populates it, before calling Mdl_context::acquire_lock.

Parameters

thd	thread context
ns	MDL key namespace
schema_name	schema name
object_name	object name
mt	MDL type
md	MDL duration

Returns

value from Mdl_context::acquire_lock

ptr_as_cref()

template<typename T >

const T & dd::sdi_utils::ptr_as_cref

(

const T *

p

)