OnCodeUnloadingAttribute

Description

Marks a static method as a callback to be invoked before code is unloaded during a code reload.

Methods marked with this attribute are called before assemblies are unloaded during a code reload. This is the counterpart to OnCodeLoadedAttribute.

Use this callback to:

• Release native plugin handles.
• Gracefully disconnect network sessions.
• Save editor-time state before reload.

This is a method attribute that can only be applied to static methods with no parameters and return type void.

Additional resources: OnCodeLoadedAttribute, OnCodeDeinitializingAttribute

using Unity.Scripting.LifecycleManagement;
using UnityEngine;
using System;
using System.Runtime.InteropServices;

public static partial class NativeAudioPlugin
{
    private static IntPtr s_PluginHandle;

    [DllImport("AudioPlugin")]
    private static extern IntPtr AudioPlugin_Initialize();

    [DllImport("AudioPlugin")]
    private static extern void AudioPlugin_Shutdown(IntPtr handle);

    [OnCodeLoaded]
    static void Initialize()
    {
        s_PluginHandle = AudioPlugin_Initialize();
    }

    [OnCodeUnloading]
    static void Shutdown()
    {
        if (s_PluginHandle != IntPtr.Zero)
        {
            AudioPlugin_Shutdown(s_PluginHandle);
            s_PluginHandle = IntPtr.Zero;
        }
    }
}

Inherited Members