thread_stage_guard.h File Reference

#include "mysql/components/services/bits/psi_stage_bits.h"
#include "sql/sql_class.h"

Go to the source code of this file.

Classes
class	raii::Thread_stage_guard
	RAII guard that sets a thread stage, and restores the previous stage when going out of scope. More...

Namespaces
namespace	raii

Macros
#define	NAMED_THD_STAGE_GUARD(name, thd, new_stage)
	Set the thread stage for the given thread, and make it restore the previous stage at the end of the invoking scope, using the named local RAII variable. More...
#define	THD_STAGE_GUARD(thd, new_stage)    NAMED_THD_STAGE_GUARD(_thread_stage_guard_##new_stage, (thd), (new_stage))
	Set the thread stage for the given thread, and make it restore the previous stage at the end of the invoking scope. More...

Macro Definition Documentation

NAMED_THD_STAGE_GUARD

#define NAMED_THD_STAGE_GUARD	(		name,
			thd,
			new_stage
	)

Value:

  raii::Thread_stage_guard name {                    \
    (thd), (new_stage), __func__, __FILE__, __LINE__ \
  }

Set the thread stage for the given thread, and make it restore the previous stage at the end of the invoking scope, using the named local RAII variable.

Parameters

name	A variable name. The macro will define a variable of type Thread_stage_guard with this name in the current scope where this macro is invoked.
thd	The thread for which the stage should be set.
new_stage	The new stage. thd will use this stage until the end of the scope where the macro is invoked. At that point, the stage is reverted to what it was before invoking this macro.

THD_STAGE_GUARD

#define THD_STAGE_GUARD	(		thd,
			new_stage
	)		NAMED_THD_STAGE_GUARD(_thread_stage_guard_##new_stage, (thd), (new_stage))

Set the thread stage for the given thread, and make it restore the previous stage at the end of the invoking scope.

Parameters

thd	The thread for which the stage should be set.
new_stage	The new stage. thd will use this stage until the end of the scope where the macro is invoked. At that point, the stage is reverted to what it was before invoking this macro.