Terminating ios-deploy doesn't terminate lldb

[paulshapiro]

I'm running ios-deploy from an NSTask, embedded within another Cocoa app.

I've tried everything to get lldb to exit, including sending EOF and ctrl-D to the stdin of the ios-deploy task. I've tried various other things too, like sending various signals, but all to no avail – I can't get the lldb session to exit, even if I kill ios-deploy itself. I'm guessing that this is because lldb is a child process of ios-deploy itself, and may be spawned in such a way that merely sending input to the stdin of ios-deploy doesn't make it to lldb itself.

I think I can see throughout the ios-deploy code various references to killing lldb. What would be really fantastic and probably save me from going crazy would be if we could modify ios-deploy such that it will kill its lldb session as ios-deploy exits. Either that, or some way to inform lldb to exit properly.

Alternatively, if anyone could provide me with some pointers on how to accomplish this in another way, it would be hugely appreciated. Beers would be owed.

Thanks very much in advance.
Paul

[shazron]

Do you need lldb running?
In the README, one of the flags is --justlaunch:

// deploy and launch your app to a connected device, but quit the debugger after
ios-deploy --justlaunch --debug --bundle my.app

[paulshapiro]

Hi there,

That's a good question. I don't specifically need lldb running, but I do need the ability to kill the running iOS app itself. According to my tests, running with --justlaunch will cause ios-deploy to exit immediately, removing any chance to kill the running iOS app.

[paulshapiro]

(and to detect that it's still running)

[shazron]

Don't have much time right now to investigate, I set the label to feature-request.
We have code in there to detect lldb exiting (or the app exiting), which will in turn exit ios-deploy -- but not vice-versa.

[paulshapiro]

I sincerely appreciate your time. If you have one more quick moment, can you provide any info/insight about how lldb is launched by ios-deploy? Ought it to be able to receive typical standard input? (Or is it misguided for me to pursue the standard in route of sending EOF or ctrl-D to it?)

[shazron]

Generated python script that is run by lldb:

1. https://github.com/phonegap/ios-deploy/blob/4d4735e505af29d9cfb242e7d3c001613dfb7fba/ios-deploy.c#L65-L150
2. https://github.com/phonegap/ios-deploy/blob/4d4735e505af29d9cfb242e7d3c001613dfb7fba/ios-deploy.c#L30-L41

There's a reason why we had to go through python -- I forget if that is applicable anymore.

[paulshapiro]

I see. I figured it might be possible to accomplish the result I'm looking for by using the python script, so I took a close look at it and how it's invoked, but it's sadly out of scope for me to work on interfacing with it. It seems quite involved, and it's actually unclear to me exactly what I'd do, as well, as the python commands are intended to be invoked by lldb, but I don't have a way to actually send input to lldb (which is the original problem, negating the need for the python script).

Can anyone on the team provide some info about how we can solve this? It seems like it would take only a small addition to ios-deploy. Although I understand that context switching and scheduling is always the issue. In such a case, an approximate ETA would be very helpful on our side.

As I haven't had a proper chance to express it yet – many thanks for all of your work on this project. It's been a big help to us.

[saramburke]

Just wanted to give my two cents - I also need a way of exiting the iOS app launched by ios-deploy, regardless of whether or not lldb is being used.

On Sep 10, 2015, at 10:17 AM, Paul Shapiro notifications@github.com wrote:

I see. I figured it might be possible to accomplish the result I'm looking for by using the python script, so I took a close look at it and how it's invoked, but it's sadly out of scope for me to work on interfacing with it. It seems quite involved, and it's actually unclear to me exactly what I'd do, as well, as the python commands are intended to be invoked by lldb, but I don't have a way to actually send input to lldb (which is the original problem, negating the need for the python script).

Can anyone on the team provide some info about how we can solve this? It seems like it would take only a small addition to ios-deploy. Although I understand that context switching and scheduling is always the issue. In such a case, an approximate ETA would be very helpful on our side.

As I haven't had a proper chance to express it yet – many thanks for all of your work on this project. It's been a big help to us.

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Reply to this email directly or view it on GitHub.

[ptarjan]

+1, this is the command I have to use:

killall lldb; ionic run ios --device