> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/plugins/api-plugin/plugin_api/plugin_declaration/plugin_status_vars.md).

# Plugin Status Variables

Plugin API reference: Plugin Status Variables. Generated from the MariaDB server headers by doxygen and moxygen.

> [`Plugin API`](/docs/server/reference/plugins/api-plugin/plugin_api.md) / [`Plugin Declaration`](/docs/server/reference/plugins/api-plugin/plugin_api/plugin_declaration.md)

## Classes

| Name                                      | Description                                                |
| ----------------------------------------- | ---------------------------------------------------------- |
| [`st_mysql_show_var`](#st_mysql_show_var) | Structure representing a SHOW STATUS variable in a plugin. |

## Macros

| Name                                                  | Description                                                                |
| ----------------------------------------------------- | -------------------------------------------------------------------------- |
| [`SHOW_INT`](#show_int)                               | Backward compatibility mapping to [SHOW\_UINT](#enum_mysql_show_type)      |
| [`SHOW_LONG`](#show_long)                             | Backward compatibility mapping to [SHOW\_ULONG](#enum_mysql_show_type)     |
| [`SHOW_LONGLONG`](#show_longlong)                     | Backward compatibility mapping to [SHOW\_ULONGLONG](#enum_mysql_show_type) |
| [`SHOW_VAR_FUNC_BUFF_SIZE`](#show_var_func_buff_size) |                                                                            |

***

### SHOW\_INT

```cpp
#define SHOW_INT SHOW_UINT
```

Defined in plugin.h:272

Backward compatibility mapping to [SHOW\_UINT](#enum_mysql_show_type)

***

### SHOW\_LONG

```cpp
#define SHOW_LONG SHOW_ULONG
```

Defined in plugin.h:274

Backward compatibility mapping to [SHOW\_ULONG](#enum_mysql_show_type)

***

### SHOW\_LONGLONG

```cpp
#define SHOW_LONGLONG SHOW_ULONGLONG
```

Defined in plugin.h:276

Backward compatibility mapping to [SHOW\_ULONGLONG](#enum_mysql_show_type)

***

### SHOW\_VAR\_FUNC\_BUFF\_SIZE

```cpp
#define SHOW_VAR_FUNC_BUFF_SIZE (256 * sizeof(void*))
```

Defined in plugin.h:298

## Enumerations

| Name                                            | Description                                     |
| ----------------------------------------------- | ----------------------------------------------- |
| [`enum_mysql_show_type`](#enum_mysql_show_type) | declarations for SHOW STATUS support in plugins |
| [`enum_var_type`](#enum_var_type)               | SHOW STATUS scope                               |

***

### enum\_mysql\_show\_type

```cpp
enum enum_mysql_show_type
```

Defined in plugin.h:251

declarations for SHOW STATUS support in plugins

| Value              | Description                                                                 |
| ------------------ | --------------------------------------------------------------------------- |
| `SHOW_UNDEF`       | Internal only!                                                              |
| `SHOW_BOOL`        | [my\_bool](/docs/server/reference/plugins/api-plugin/plugin_api.md#my_bool) |
| `SHOW_UINT`        | `unsigned int`                                                              |
| `SHOW_ULONG`       | `unsigned long`                                                             |
| `SHOW_ULONGLONG`   | `unsigned long long`                                                        |
| `SHOW_CHAR`        | `char *`                                                                    |
| `SHOW_CHAR_PTR`    | `char **`                                                                   |
| `SHOW_ARRAY`       | SHOW\_VAR \[]                                                               |
| `SHOW_FUNC`        | **See also**: SHOW\_FUNC\_ENTRY                                             |
| `SHOW_DOUBLE`      | `double`                                                                    |
| `SHOW_SINT`        | `int`                                                                       |
| `SHOW_SLONG`       | `long`                                                                      |
| `SHOW_SLONGLONG`   | `long long`                                                                 |
| `SHOW_SIMPLE_FUNC` | [mysql\_show\_var\_func](#mysql_show_var_func) \*                           |
| `SHOW_SIZE_T`      | `size_t`                                                                    |
| `SHOW_always_last` | Internal only!                                                              |

***

### enum\_var\_type

```cpp
enum enum_var_type
```

Defined in plugin.h:279

SHOW STATUS scope

| Value                      | Description                   |
| -------------------------- | ----------------------------- |
| `SHOW_OPT_DEFAULT`         | Internal only!                |
| `SHOW_OPT_SESSION`         | Session scope                 |
| `SHOW_OPT_GLOBAL`          | Global scope                  |
| `SHOW_OPT_SESSION_NO_LOCK` | Session scope without locking |

## Typedefs

| Return  | Name                                          | Description |
| ------- | --------------------------------------------- | ----------- |
| `int(*` | [`mysql_show_var_func`](#mysql_show_var_func) |             |

***

### mysql\_show\_var\_func

```cpp
using mysql_show_var_func = int(*
```

Defined in plugin.h:299

## Functions

| Return                                           | Name                                                    | Description |
| ------------------------------------------------ | ------------------------------------------------------- | ----------- |
| struct [`st_mysql_show_var`](#st_mysql_show_var) | [`SHOW_FUNC_ENTRY`](#show_func_entry) `static` `inline` |             |

***

### SHOW\_FUNC\_ENTRY

`static` `inline`

```cpp
static inline struct st_mysql_show_var SHOW_FUNC_ENTRY(const char * name, mysql_show_var_func func_arg, const char * name, mysql_show_var_func func_arg)
```

Defined in plugin.h:303

## Class Definitions

### st\_mysql\_show\_var

```cpp
#include <plugin.h>
```

```cpp
struct st_mysql_show_var
```

Defined in plugin.h:290

Structure representing a SHOW STATUS variable in a plugin.

#### Public Attributes

| Return                                               | Name              | Description |
| ---------------------------------------------------- | ----------------- | ----------- |
| `const char *`                                       | [`name`](#name)   |             |
| `void *`                                             | [`value`](#value) |             |
| enum [`enum_mysql_show_type`](#enum_mysql_show_type) | [`type`](#type)   |             |

***

#### name

```cpp
const char * name
```

Defined in plugin.h:291

***

#### value

```cpp
void * value
```

Defined in plugin.h:292

***

#### type

```cpp
enum enum_mysql_show_type type
```

Type: enum [`enum_mysql_show_type`](#enum_mysql_show_type)

Defined in plugin.h:293