Check if process is running under Rosetta 2?

Question

Created Jul ’20

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I'm working on porting command-line software used in web development. Is there any way to see if a process is being run under Rosetta 2 from the command line? Anything outside of Activity Monitor?

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Answer 1

OP

Apple

Jul ’20

What would be your goal in knowing this? Are you planning on doing something different based on running natively vs. Rosetta 2?

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Answer 2

iseggev OP

Jul ’20

https://developer.apple.com/videos/play/wwdc2020/10686/ provides the following code sample:

Code Block // Use "sysctl.proc_translated" to check if running in Rosetta
// Returns 1 if running in Rosetta
int processIsTranslated() {
	 int ret = 0;
	 size_t size = sizeof(ret);
	 // Call the sysctl and if successful return the result
	 if (sysctlbyname("sysctl.proc_translated", &ret, &size, NULL, 0) != -1) 
			return ret;
	 // If "sysctl.proc_translated" is not present then must be native
	 if (errno == ENOENT)
			return 0;
	 return -1;
}

1

Answer 3

ingconti OP

Jul ’20

Swift see at:

https://developer.apple.com/forums/thread/652667?answerId=618217022&page=1#622923022

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Answer 4

Teege OP

Dec ’20

You can check in the activity monitor under "Architecture". Intel vs Apple.

Edit: I noticed that you do know about activity monitor route, sorry.

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