Prevents priority inversion

# EventConfig::setMaxDispatchInterval

(PECL event >= 2.1.0-alpha)

EventConfig::setMaxDispatchInterval — Prevents priority inversion

### 説明

public function EventConfig::setMaxDispatchInterval( int `$max_interval` , int `$max_callbacks` , int `$min_priority` ): void

Prevents priority inversion by limiting how many low-priority event callbacks can be invoked before checking for more high-priority events.

> 注意:

> Available since `libevent 2.1.0-alpha`.

### パラメータ

`max_interval`

  An interval after which Libevent should stop running callbacks and check for more events, or `0`, if there should be no such interval.

`max_callbacks`

  A number of callbacks after which Libevent should stop running callbacks and check for more events, or `-1`, if there should be no such limit.

`min_priority`

  A priority below which `max_interval` and `max_callbacks` should not be enforced. If this is set to `0`, they are enforced for events of every priority; if it's set to `1`, they're enforced for events of priority `1` and above, and so on.

### 戻り値

成功した場合に `true` を、失敗した場合に `false` を返します。

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