---
name: "Apache2::MPM"
section: "3pm"
platform: "linux"
package: "libapache2-mod-perl2"
version: "2.0.13-2+b2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Apache2::MPM"
---

# Apache2::MPM(3pm)

Perl API for accessing Apache MPM information

## NAME

Apache2::MPM - Perl API for accessing Apache MPM information

## Synopsis

```
  use Apache2::MPM ();

  # check whether Apache MPM is threaded
  if (Apache2::MPM->is_threaded) { do_something() }

  # which mpm is used
  my $mpm = lc Apache2::MPM->show;

  # query mpm properties
  use Apache2::Const -compile => qw(:mpmq);
  if (Apache2::MPM->query(Apache2::Const::MPMQ_STATIC)) { ... }
```

## Description

`"Apache2::MPM"` provides the Perl API for accessing Apache MPM information.

## API

`"Apache2::MPM"` provides the following functions and/or methods:

### "query"

Query various attributes of the MPM

```
  my $query = Apache2::MPM->query($const);
```

- obj: $class ( "Apache2::MPM class" )

  the class name

- arg1: $const ( "Apache2::Const :mpmq group constant" )

  The MPM attribute to query.

- ret: $query ( boolean )

  the result of the query

- since: 2.0.00

  For example to test whether the mpm is static:

```
  use Apache2::Const -compile => qw(MPMQ_STATIC);
  if (Apache2::MPM->query(Apache2::Const::MPMQ_STATIC)) { ... }
```

### "is\_threaded"

Check whether the running Apache MPM is threaded.

```
  my $is_threaded = Apache2::MPM->is_threaded;
```

- obj: $class ( "Apache2::MPM class" )

  the class name

- ret: $is\_threaded ( boolean )

  threaded or not

- since: 2.0.00

  Note that this functionality is just a shortcut for:

```
  use Apache2::Const -compile => qw(MPMQ_IS_THREADED);
  my $is_threaded = Apache2::MPM->query(Apache2::Const::MPMQ_IS_THREADED);
```

### "show"

What mpm is used

```
  my $mpm = Apache2::MPM->show();
```

- obj: $class ( "Apache2::MPM class" )

  the class name

- ret: $mpm ( string )

  the name of the MPM. e.g., "Prefork".

- since: 2.0.00

  ## See Also

mod\_perl 2.0 documentation.

## Copyright

mod\_perl 2.0 and its core modules are copyrighted under The Apache Software License, Version 2.0.

## Authors

The mod\_perl development team and numerous contributors.