Add support for profile and release run modes for custom devices

Use case

Support running Flutter apps in profile or release mode on a custom device.

The Flutter profile build mode is very useful for troubleshooting performance issues, but trying to run a Flutter app in profile or release mode on a custom device currently fails with:

$ flutter run -d my-device --profile
Profile mode is not supported by <My device>.

Proposal

Add support for running Flutter apps in profile and release modes on custom devices by:

Removing the hard-coded debug mode check from CustomDevice::supportsRuntimeMode

flutter/packages/flutter_tools/lib/src/custom_devices/custom_device.dart

Lines 681 to 684 in d8100ac

    
           @override 
        
           FutureOr<bool> supportsRuntimeMode(BuildMode buildMode) { 
        
             return buildMode == BuildMode.debug; 
        
           }

Adding a new ${buildMode} string interpolation variable to the runDebug command (or possibly rename the command to run instead?):

flutter/packages/flutter_tools/lib/src/custom_devices/custom_device.dart

Lines 351 to 356 in d8100ac

    
           final List<String> interpolated = 
        
               interpolateCommand(_device._config.runDebugCommand, <String, String>{ 
        
                 'remotePath': '/tmp/', 
        
                 'appName': packageName, 
        
                 'engineOptions': _getEngineOptionsForCmdline(debuggingOptions, traceStartup, route), 
        
               });

This isn't something we're going to be able to prioritize on our size given that we plan to do some refactoring to the tool in the future that would likely make this issue irrelevant. However, there's no timeline on those refactors, so we'd be willing to accept a simple PR with tests to resolve this if you're interested in contributing a fix.

@bkonyi

@bkonyi Thank you for the reply. There is pending pull-request that adds support for this feature at #166132.

Looks like I also missed that PR... 🙃 I'll take a look!

Is this a duplicate of #79681 ? If not, what's the distinction?

Yes, it is a duplicate (I only found #79681 after creating this issue). Closing this one to keep all follow-up discussions in #79681.

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

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Add support for `profile` and `release` run modes for custom devices #164228

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	@override
	FutureOr<bool> supportsRuntimeMode(BuildMode buildMode) {
	return buildMode == BuildMode.debug;
	}

	final List<String> interpolated =
	interpolateCommand(_device._config.runDebugCommand, <String, String>{
	'remotePath': '/tmp/',
	'appName': packageName,
	'engineOptions': _getEngineOptionsForCmdline(debuggingOptions, traceStartup, route),
	});

Add support for profile and release run modes for custom devices #164228

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bkonyi commented on Apr 8, 2025

vially commented on Apr 8, 2025

bkonyi commented on Apr 9, 2025

stuartmorgan-g commented on Apr 10, 2025

vially commented on Apr 11, 2025

github-actions commented on Apr 25, 2025

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Add support for `profile` and `release` run modes for custom devices #164228