Metadata Instrumentation

The mysql_mdl_create, mysql_mdl_set_status, and mysql_mdl_destroy macros, which instrument metadata locks for the Performance Schema.

Instrumentation Interface

Macros

Name	Description
mysql_mdl_create	Instrumented metadata lock creation.
mysql_mdl_set_status
mysql_mdl_destroy	Instrumented metadata lock destruction.

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mysql_mdl_create

#define mysql_mdl_create(I, K, T, D, S, F, L, I, K, T, D, S, F, L) NULL

Defined in psi/mysql_mdl.h:74

Instrumented metadata lock creation.

Parameters

Parameter	Type	Description
I		Metadata lock identity
K		Metadata key
T		Metadata lock type
D		Metadata lock duration
S		Metadata lock status
F		request source file
L		request source line
I		Metadata lock identity
K		Metadata key
T		Metadata lock type
D		Metadata lock duration
S		Metadata lock status
F		request source file
L		request source line

---

mysql_mdl_set_status

#define mysql_mdl_set_status(L, S, L, S) do {} while (0)

Defined in psi/mysql_mdl.h:81

---

mysql_mdl_destroy

#define mysql_mdl_destroy(M, M) do {} while (0)

Defined in psi/mysql_mdl.h:95

Instrumented metadata lock destruction.

Parameters

Parameter	Type	Description
M		Metadata lock
M		Metadata lock