Multi Instance DAW Crash Issue Guide

[Fortune]

Thank you man for this great guide Amazingly useful!!!!

Like you've suggested, for test purpose I removed some setattributes in my code and the crash issue almost fixed interestingly. Why is this happenning?

[Sawer]

It will be awsome if you end up using Panels, Paint Routines and Custom Look and feel for EVERYTHING (animations, knobs, callback animations etc), so that you won't relay anymore on images or rlottie and other 2D/3D softwares graphic softwares.

Just like Web UI, UX interactions. Can this be possible in future or its already possible with more tests and knowing HiseScript? Just a curiosity

[orange]

@Fortune said in Multi Instance DAW Crash Issue Guide:

Like you've suggested, for test purpose I removed some setattributes in my code and the crash issue almost fixed interestingly. Why is this happenning?

I remember @Christoph-Hart was saying that is about the moodycamel queue that shares the same UI thread. So it is more open to clogging in multi-instances and because of this too many messages situation.

[Dan Korneff]

@orange said in Multi Instance DAW Crash Issue Guide:

Number one cause is the amount of used setAttribute APIs

@orange @Christoph-Hart does this also include setValue()? If not, I might use scripts to set the value of panels, and then us the Panel Property Editor to assign Processor/Parameter IDs.
Can panels even do that?...

[LeeC]

@orange @Christoph-Hart
I know it depends, but is there a ballpark number for the amount of setAttributes we should be using simultaneously?

Also, would using the showControl instead of set("visible",value); to toggle visibility of components help to avoid crashes aswell?

[d.healey]

This sounds fishy to me. Setting attributes shouldn't be causing any issues. I suspect there are other problems with the scripts.
Are you setting attributes only in deferred scripts?
Are you setting attributes in MIDI callbacks or timers?

[orange]

@dustbro said in Multi Instance DAW Crash Issue Guide:

@orange said in Multi Instance DAW Crash Issue Guide:

Number one cause is the amount of used setAttribute APIs

@orange @Christoph-Hart does this also include setValue()? If not, I might use scripts to set the value of panels, and then us the Panel Property Editor to assign Processor/Parameter IDs.
Can panels even do that?...

Since generally I use setAttributes, I haven't made experiments with setValue() & Panels.

But setValue should be ok I think.

[orange]

@LeeC said in Multi Instance DAW Crash Issue Guide:

@orange @Christoph-Hart
I know it depends, but is there a ballpark number for the amount of setAttributes we should be using simultaneously?

Also, would using the showControl instead of set("visible",value); to toggle visibility of components help to avoid crashes aswell?

I haven't seen any issues yet with using too many showControl or set("visible")... stuff. For multi-instance crash you need to make experiments with beta testers.

[orange]

@d-healey said in Multi Instance DAW Crash Issue Guide:

This sounds fishy to me. Setting attributes shouldn't be causing any issues. I suspect there are other problems with the scripts.

It's been covered here by @Christoph-Hart befrore: https://forum.hise.audio/topic/2826/debugging-with-reaper/25

You can use as many setAttributes as you can, it's not a problem on most systems. But the issue is "Multi Instance DAW Crash" in "Some Systems".

That doesn't mean it happens in all computers. But if you see this in a computer, it will do that crash in all DAWs :) You know what: while I haven't seen any multi instance crash in my 7 years old laptop, some users were repoting this issue to me. Honestly I couldn't replicate it. Then I got a new Intel 10th generation i9, 128GB RAM, 12GB NVidia 2080Ti computer, then guess what: it crashes for 5 plugins :) Same plugin, new system.

Are you setting attributes only in deferred scripts?

Yeah, I am using it in main interface script only. But the issue happens also with the plugin that uses only One Timer Object (100ms - on preset label only). Whole plugin is a Parametric eq, ShapeFX and setAttributes. Nothing more. I can open 20 instances in old pc, but crash for 5 instances in new one :) Crash reporting beta testers see the multi instance crash too.

This is more interesting, when the deferring callbacks are disabled, sometimes crash reduces :)

Are you setting attributes in MIDI callbacks or timers?

No.

[Dan Korneff]

@d-healey said in Multi Instance DAW Crash Issue Guide:

Are you setting attributes only in deferred scripts?

Synth.deferCallbacks(true);

This is the second line on my onInit. I don't need to call this on my separate "include" scripts, right? Those should be considered part of the Interface script.

[d.healey]

@dustbro Correct.

Could someone create a minimal example project that consistently demonstrates the issue?

[orange]

Updated. Added "else if" statements.

[Natan]

@orange Thank you sir, and what's about

Synth.deferCallbacks(true);

Is this something that can help?
and is this works in FX plugins?

Thanks

[orange]

@Natan It depends in which script you are using it.

I am using it in the main interface script, it works..

Scripting Best Practices

This is a collection of useful tricks which will be extended over time. I divided them into two categories: Interface Design and MIDI Processing. Interface d...

Forum (forum.hise.audio)

[Natan]

@orange Great to hear that :) will search and read more about it
Thank you sir

[Natan]

@orange Sir,
How we can Track The Messages sent by A Parameter, Is there any Outputs That shows how many messages generate Once we, For Example, click A Button?!

Thanks