Trevor being Trevor

I have a max patch that dynamically creates and removes a ton of objects via the this.patcher.newdefault() and this.patcher.remove() methods to essentially build and destroy a dynamic UI via Javascript as needed. The objects are stored in global arrays by type (for example, all the textedit objects) so the functions that create and destroy the UI both have access to them.

It's been relatively smooth. However, as I have continued to build using the same methodology I encounter an odd crash now and then. After troubleshooting, the problem comes down to the use of a this.patcher.remove() in specific instances. Literally, if I comment it out the line(s), the crash does not occur. 

If anybody with more knowledge on Max debug output could give any insight into following info I think I could get to the bottom of it. I am happy to provide more info if needed, just wanted to avoid writing a novel of a post.

These are snippets of the Max debug output when running a bunch of this.patcher.remove() methods. I am wondering if the bolded lines are potential issues that are compounding into a crash later.

Looks Normal:
object_unregister: slating unique sym u857004814 for reuse
unregistering: u562004824 in 00000000000B1890. ref count now 0

Should I be concerned?
unregistering: u597005447 in 00000000000B1890. ref count now 0
object_unregister: slating unique sym u597005447 for reuse
object_detach: object 000000002D0E4170 wasn't attached to object 0000000029D6F890 
unregistering: u915005449 in 000000000014C738. ref count now 0
object_unregister: slating unique sym u915005449 for reuse
unregistering: u587005469 in 00000000000B1890. ref count now 0

Another snippet after adding in some lines that makes it crash in certain instances.
registering: u184003150 in 00000000009267B8
registering: u363003151 in 00000000009267B8
unregistering: u512002235 in 00000000009267B8. ref count now 0
object_unregister: slating unique sym u512002235 for reuse
warning: object 0000000027D28780 was freed but was still attached to 1 registered object(s) 
loadbang_clearqueue
loadbang_clearqueue
registering: u176003152 in 00000000008DC8A0

MaxCrashSnippet.png

I have a max patch that dynamically creates and removes a ton of objects via the this.patcher.newdefault() and this.patcher.remove() ... 

need-insight-on-crash-and-debug-output-for-this-patcher-remove

Need insight on crash and debug output for this.patcher.remove()

Monib Ahmed

Hi, I'm trying to load some external JS libraries. Can you advise me what is the recommended way of doing this? 

I've tried including the paths in Files Search Path, and the paths are showing up

MacOS:/Users/monibahmed/node_modules/lodash
MacOS:/Users/monibahmed/node_modules/lodash/fp

But the following post "undefined" in the console:

var lodash = require("lodash");
post(lodash.VERSION+'\n')

Hi, I'm trying to load some external JS libraries. 

loading-lodash-or-other-external-js-libraries

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Load it by message:[script npm install lodash] and use in JS by const _ = require('lodash')
Seems to work fine here.


Hi, yes the node.script object works fine with Lodash, but not the js object?

Ah, no. [js] and [jsui] are strictly limited in scope.

Thank you! I guess I’ll start using node. 

Loading lodash or other external JS libraries

This is fun one. I wrote some code for a device that uses the Task Object. Everything works as expected when I use my device in Ableton 10. However, in Ableton 11 on both Windows and Mac it appears to stop functioning. 

For context, here's the quick breakdown of how the code works...

The user triggers an initialization function that sets all the global variables to a starting value and then kicks off the desired process function. 

The desired processing function searches for a desired condition to be true within a data set using a loop to process each piece of data. Each iteration increments the necessary global variables.

When the desired condition is found, the task function is called for a given number of repetitions. 

A flag is set that allows the process function to pause using break or return commands nested in if statements checking for that flag

The Task function runs. When it reaches it's final repetition, it calls the process function again.

This repeats until certain global variable conditions are met.

Now after debugging for a while, this what I found. The Task function runs successfully "once". More specifically, it's called to repeat x number of times and on the last repetition it triggers the process function again as expected. However, the second time it's called to repeat, it stops just before the last repetition. It fails to call the process function again and everything grinds to a halt. As far as I can tell, this is not an error on my part because the works just fine on Ableton 10 (Windows and Mac). I've been looking through the release notes and documentation looking for a clue, but I have not had any luck. Hence, once again I am asking for your help. Maybe I should change my name to Trevor being Bernie. Anyway, this forum is full of heroes without capes as far as I can tell, thanks for any insight in advance!

This is fun one. I wrote some code for a device that uses the Task Object. Everything works as expected when I use my device in Ableton 10. 

ableton-11-appears-to-break-the-functionality-of-the-task-object

i use task often in Live 11.   Impossible to diagnose without code sample which reproduces the problem.

Well let me ask more generally then, how did Ableton 11 affect the JavaScript implementation in Max compared to Ableton 10? Based on what I described, how may that be relevant to my situation? This is the kind of insight I am looking for so I can diagnose the problem. I will work on an isolated code sample. In the meantime, these release note links may be helpful now or for someone in the future...

On my machine
Ableton 10 Max Version: 8.1.11
Ableton 11 Max Version: 8.3.3

Max Release Notes After 8.1.11 up to 8.3.3
http://cycling74.s3.amazonaws.com/support/version_8_2_0.html
http://cycling74.s3.amazonaws.com/support/version_8_2_1.html
http://cycling74.s3.amazonaws.com/support/version_8_2_2.html
http://cycling74.s3.amazonaws.com/support/version_8_3_0.html
http://cycling74.s3.amazonaws.com/support/version_8_3_1.html
http://cycling74.s3.amazonaws.com/support/version_8_3_2.html
https://cycling74.s3.amazonaws.com/support/version_8_3_3.html

Possibly Related Excerpts from Links Above
8.2.0
jsliveapi: eliminate crash when there's no 'this' for operations (the task object uses 'this')

8.2.2
JS Task: fixed issue with creating JS object with task

Kudos for digging up the history.  If you are trying to prove a regression caused by a Max update among those builds the next step would be a binary regression through the builds.

So maybe you'd start with Live 10 but linking Max install of 8.2.1 and see if it happens.  Then move newer to newer or older builds based on those results to isolate where the behavior change was introduced.  This is truly tedious and potentially very unrewarding,  but it can also be super helpful to the devs to have that kind of information.

Truly tedious and potentially very unrewarding,  but it can also be super helpful.

I feel like this captures some of the struggles of troubleshooting haha. I may have to do that to get the bottom of it. However, I just got it working by creating a fresh Task object right before I call the repeat function. Not sure why this works, but this is the only change I made...

In Live 10
//global declaration
var myTask = new Task(taskFunction, this);

//Then when the process function needs to call it for x number of repeats
myTask.repeat(x);

In Live 11
//global declaration
var myTask = newTask(taskFunction, this);

//Then when the process function needs to call it for x number of repeats
myTask = new Task(taskFunction, this);
myTask.repeat(x);

nice you found a workaround. If you’re going to do it that way you probably want to call Task.freepeer() before you re-assign myTask to the new Task.  I think that will allow the previous task to be garbage collected.

Thanks, I went back to Live 10 and had new issues. However, adding  arguments.callee.task.freepeer(); at the end of the last iteration of the task fixed those issues so good call!

Now I am noticing that the Live theme is overriding some of my colors in Live 11 causing my UI to look off. It looks like there is precedent for this in the release notes...

8.3.0
Dynamic Colors: new default 'Text / Icon' color follows Live themes 
(I wonder if this means the newobject method will ignore Live themes, but this seems to be outdated and doesn't respond for objects like "textbutton")

8.3.2
Color Selector: theme-aware
Dynamic Colors: preserved for object box borders
Dynamic Colors: restored when loaded in a different Live theme


Currently my only solution is to comment out any custom color choices I made such as...

//dynamicallyCreatedMaxObject.setattr("textcolor", [1,1,1,1]);
//dynamicallyCreatedMaxObject.setattr("bgcolor", [0.259, 0.259, 0.259, 0.722]);

I need one of my objects to ignore Live colors, but I don't see an obvious way to set this via JavaScript. I feel like we need a useLiveColors attribute added. Posting mainly to point out more differences between Live 11 and 10. Also, I may have a workaround I will follow up on.

Related Thread
https://cycling74.com/forums/themes-messes-up-colours 

Okay here was my strategy to deal with Live changing my dynamically created object's colors.

Set up a live.colors object to bang a message that calls a function within your Javascript object. It didn't seem to matter, but I put a small 10ms delay on mine.

Use the setattr method to re-establish the color attributes of the dynamically created objects. You can essentially copy and paste the color settings you set before.  However, through testing, you may need to add some more. For example, for a textbutton object, "textcolor", "textovercolor" and "textoncolor" seem to be the combination that kept things consistent across ableton 10 and 11.

Once things are working as expected, build some kind of protection to ignore the function call when the dynamic objects have not been generated. I used a gate on live.colors that doesn't open until the device is fully loaded. I also have an if statement within the function to check if certain variables exist.

It would be nice to simply have an attribute we could set to ignore color updates, but this got the job done for now.


Ableton 11 appears to break the functionality of the Task Object

tyler mazaika

I'm making some jspainter files for tab/live.tab which cache the "unselected" state for the whole set of buttons as an Image().

It seems like if I don't make my mgraphics context for the cached image 2x resolution (and then downscale during paint() ), it always looks blurry.  

Compare the text in the yellow image and with the blue image where the cached Image() was drawn at 2x.

This seems weird because if I just draw everything on the fly the appropriate scaling happens automatically.  

image.png

I'm making some jspainter files for tab/live.tab which cache the "unselected" state for the whole set of buttons as an Image().
It seems lik

mgraphics-image-differs-from-standard-drawing-on-2x-retina-displays

FWIW the least painful solution seems to be to use scale(2, 2) when when drawing the cached image (on a 2x-sized canvas) and then scale(0.5, 0.5) before calling image_surface_draw() in the target drawing space.

mgraphics Image() differs from standard drawing on 2x / Retina displays ?

In Max, you can pass "get <foo>" to a [dict] where the value of <foo> is a dictionary.  Output (2nd outlet) is:

u12345678 is the name of the sub dictionary which can be very usefully used as the @name attribute of a dict.pack to modify the contents directly in the parent dict.

In JS, if you call mydict.get("<foo>") you are returned a Dict object, but this returned Dict does not have the same name when you query it's name property.

So, in JS is it possible to get the reference to the child dictionary rather than a Dict object?

FWIW I'm trying to do some scripted creation of [dict.pack] objects and set their @name, which is why I would like for this to work...

In Max, you can pass "get <foo>" to a [dict] where the value of <foo> is a dictionary. 

possible-to-get-dict-sub-dictionary-reference-not-copy-in-js

@cycling74 folks... does anybody know if this is possible?  

The workaround involves going from JS into max messages to a [dict] object and back to JS.  It's cumbersome.

Not sure if this helps, but in the past I have saved the child dictionary to a separate variable, made changes and then saved it back into the parent dictionary. 

Yeah, that's inefficient and precludes the use of the same child dictionary being modified from multiple places in the UI, among other things.

Possible to get Dict() sub dictionary reference (not copy) in JS?

jgastonraoul

Every time I try to load matrix files in js, I get an error "jit.matrix: can't find file ..." although I have no problem loading the same file directly via read message.
I've attached a patcher and a js file for you to test. Just put the matrix file attached somewhere outside of Max path or  patcher path (if there is a file with the same name in Max path, Max  loads it instead of the one I'm asking for), open it via the  "opendialog" object and trigger the 2 messages below to compare the 2  cases.
I think this is a bug and already reported it to Cycling '74 support, but I'd like to know if I'm missing something or if there is a workaround.

PS : I've added a txt extension to the matrix file to be able to upload it to the forum but it's a binary matrix file.

load_matrix_js.maxpat

load_matrix_js.js

160.jxf.txt


 


 

 
Hi,
Every time I try to load matrix files in js, I get an error "jit.matrix: can't find file ..." although I have no problem ... 

loading-matrix-file-from-js

Answered on Discord, JS file should be written like this: 

autowatch = 1;   
var myMat = new JitterMatrix();  
function loadMatrix(path) { 	
myMat.read(path);     
outlet(0, "jit_matrix", myMat.name); 
}  
function notifydeleted() { myMat.freepeer(); }

loading matrix file from js

Alex Guillard

I  have some kind of problems with the Node API for Max.
Recently, I created a way to communicate in TCP with 2 Max applications installed on 2 different computers. To do that, I just use a Node JS server and client, with the node.script object. Everything works fine actually and I can communicate between the 2 computers, except that sometimes, after a while, the Node Max API gives me this timeout error :
Max API Message Request timed out. id: u52248380302
Error: Max API Message Request timed out. id: u52248380302
    at makeError (C:\Users\XXX\max_project\resources\packages\Node For Max\source\lib\api\index.js:9:14)
    at Timeout._onTimeout (C:\Users\XXX\max_project\resources\packages\Node For Max\source\lib\api\index.js:178:12)
    at listOnTimeout (internal/timers.js:531:17)
    at processTimers (internal/timers.js:475:7)

I tried to increase the time before timeout in the index.js file, but nothing helps.
When I start to use the client/server, I bombard with messages, but it doesn't crash. It's only after a while that it does that... Has anyone ever encountered this problem and know where it may be coming from ?

Hello there,
I  have some kind of problems with the Node API for Max.
Recently, I created a way to communicate in TCP with 2 Max application

node-error-max-api-message-request-timed-out

This usually is due to heavy back pressure on the communication between the two processes. Would you mind getting in touch with support and include the relevant pieces of your patch / JS code if possible?  Feel free to reference me so that they can forward it if needed.

We are considering options for eventually making this easier to handle for the user by slightly adjusting the API behaviour so every data point about you experiences like your is helpful and appreciated. But meanwhile I'm happy to check your project and see if there are maybe some adjustments that could already help.

Hi, I'm having the same issue... Is there any configuration or something that could help max handle heavy communication with Node? Could logging to the console a lot be a reason for this crash?

Node Error : Max API Message Request timed out

Benoît Guchet

When I'm writing a RNBO/JS/JSON web page not involving SBB, everything works fine (ie: white noise)

But as soon as I'm using SBB it doesn't: it runs (logs), but no sound. Haven't found any special information anywhere about it.

Is it supposed to work as is ?

It there a SBB JS package I'm suppose to include?

Any special export option?


Hi, I'm both new to RNBO and Max.
When I'm writing a RNBO/JS/JSON web page not involving SBB, everything works fine (ie: white noise)
But ... 

synth-building-blocks-package-compatible-with-rnbo-for-js

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Om du vill veta mer om oss besök gärna våra sidor.

Synth Building Blocks package compatible with RNBO for JS ?

AudioMatt

So I get that I need to use getvalueof and setvalueof to enable parameter mode correctly in javascript and C.

But now it appears that JSUI reverts to _parameter_type blob every time I open my patch.   This disables most of the stuff associated with it.  What's going on here?

I'm using a copy of the default JSUI dial


EDIT:  Okay I can make it work if I put this in global code:
this.box.message("parameter_enable",1);;
 this.box.message("_parameter_type",1);;
 this.box.message("_parameter_invisible",0);;

but it's still not working in Ableton 10, only in Max

So I get that I need to use getvalueof and setvalueof to enable parameter mode correctly in javascript and C.
But now it appears that JSUI r

-jsui-parameter-only-in-blobs

Could you link me to some information how to use it in C? 

[JSUI] Parameter only in Blobs?

Live objects (e.g. live.numbox) output the rawfloat value out their right outlet.  Is there any way to get this value in JS?  

MaxobjListener listening to "value" gets the value output from the left side, and for my purposes I'd be much happier getting direct access to the rawfloat value without cabling.

Live objects (e.g. live.numbox) output the rawfloat value out their right outlet. 

Cycling '74 Forums

I have a max patch that dynamically creates and removes a ton of objects via the this.patcher.newdefault() and this.patcher.remove() ...

Thank you! I guess I’ll start using node.

Okay here was my strategy to deal with Live changing my dynamically created object's colors. Set up a live.colors object to bang a message ...

FWIW the least painful solution seems to be to use scale(2, 2) when when drawing the cached image (on a 2x-sized canvas) and then ...

Yeah, that's inefficient and precludes the use of the same child dictionary being modified from multiple places in the UI, among other ...

Answered on Discord, JS file should be written like this: autowatch = 1; var myMat = new JitterMatrix(); function loadMatrix(path) { ...

Hi, I'm having the same issue...

Hi, I'm both new to RNBO and Max. When I'm writing a RNBO/JS/JSON web page not involving SBB, everything works fine (ie: white noise) But ...

Could you link me to some information how to use it in C?

Live objects (e.g. live.numbox) output the rawfloat value out their right outlet.