Crash on M1

[ghost]

This line crashes on M1 Macs because the try fails

https://github.com/mattgallagher/CwlUtils/blob/0bfc4587d01cfc796b6c7e118fc631333dd8ab33/Sources/CwlUtils/CwlSysctl.swift#L164

[deirdresm]

In terminal, what does…

sysctl -n hw.cpufrequency

…produce on an M1?

[ghost]

@deirdresm just returns nothing and a 0 exit code:

Alex@MacBook-Pro ~ » sysctl -n hw.cpufrequency                            1 ↵
Alex@MacBook-Pro ~ » echo $?
0
Alex@MacBook-Pro ~ » 

[deirdresm]

Interesting. I was looking at the sources earlier on opensource.apple.com, but don't remember seeing M1-specific stuff relating to CPU speed, but I'll check it next time I'm in that codebase (which will likely be soon).

[deirdresm]

Weird, looks like it should be supported: https://github.com/EntityFX/anybench/blob/1209866ed4890276e449958c1b6845307c47581a/results/apple-arm-m1/Dhry.txt

I didn't notice the trailing 1 in your command on mobile, maybe try it without?

[ghost]

So as of right now, our software is compiling Intel only and compiles correctly (so runs in Rosetta). It just crashes when running on M1 because of that optional not unwrapping correctly. However, I just downloaded the project and tried to run the test on my M1 MacBook and got this compile error:

Showing Recent Messages

Build target CwlPreconditionTesting of project CwlPreconditionTesting with configuration Debug

CompileSwiftSources normal arm64 com.apple.xcode.tools.swift.compiler (in target 'CwlPreconditionTesting' from project 'CwlPreconditionTesting')
CwlUtils-master/Dependencies/CwlPreconditionTesting/Sources/CwlPreconditionTesting/CwlCatchBadInstruction.swift:185:166: error: cannot find 'x86_THREAD_STATE64' in scope
                        thread_swap_exception_ports(mach_thread_self(), EXC_MASK_BAD_INSTRUCTION, currentExceptionPtr, Int32(bitPattern: UInt32(EXCEPTION_STATE) | MACH_EXCEPTION_CODES), x86_THREAD_STATE64, masksPtr, countPtr, portsPtr, behaviorsPtr, flavorsPtr)
                                                                                                                                                                                          ^~~~~~~~~~~~~~~~~~

CompileSwift normal arm64 CwlUtils-master/Dependencies/CwlPreconditionTesting/Sources/CwlPreconditionTesting/CwlBadInstructionException.swift (in target 'CwlPreconditionTesting' from project 'CwlPreconditionTesting')

/Users/Alex/Downloads/CwlUtils-master/Dependencies/CwlPreconditionTesting/Sources/CwlPreconditionTesting/CwlDarwinDefinitions.swift:44:59: error: cannot find type 'x86_thread_state64_t' in scope
public let x86_THREAD_STATE64_COUNT = UInt32(MemoryLayout<x86_thread_state64_t>.size / MemoryLayout<Int32>.size)
                                                          ^~~~~~~~~~~~~~~~~~~~
/Users/Alex/Downloads/CwlUtils-master/Dependencies/CwlPreconditionTesting/Sources/CwlPreconditionTesting/CwlBadInstructionException.swift:63:47: error: cannot find 'x86_thread_state64_t' in scope
                var state = old_state.withMemoryRebound(to: x86_thread_state64_t.self, capacity: 1) { return $0.pointee }
                                                            ^~~~~~~~~~~~~~~~~~~~
/Users/Alex/Downloads/CwlUtils-master/Dependencies/CwlPreconditionTesting/Sources/CwlPreconditionTesting/CwlBadInstructionException.swift:77:3: error: type of expression is ambiguous without more context
                withUnsafePointer(to: &f) {
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/Alex/Downloads/CwlUtils-master/Dependencies/CwlPreconditionTesting/Sources/CwlPreconditionTesting/CwlBadInstructionException.swift:82:35: error: cannot find 'x86_thread_state64_t' in scope
                new_state.withMemoryRebound(to: x86_thread_state64_t.self, capacity: 1) { $0.pointee = state }
                                                ^~~~~~~~~~~~~~~~~~~~

CompileSwift normal arm64 /Users/Alex/Downloads/CwlUtils-master/Dependencies/CwlPreconditionTesting/Sources/CwlPreconditionTesting/CwlDarwinDefinitions.swift (in target 'CwlPreconditionTesting' from project 'CwlPreconditionTesting')

/Users/Alex/Downloads/CwlUtils-master/Dependencies/CwlPreconditionTesting/Sources/CwlPreconditionTesting/CwlDarwinDefinitions.swift:44:59: error: cannot find type 'x86_thread_state64_t' in scope
public let x86_THREAD_STATE64_COUNT = UInt32(MemoryLayout<x86_thread_state64_t>.size / MemoryLayout<Int32>.size)
                                                          ^~~~~~~~~~~~~~~~~~~~

[ghost]

I had Xcode compile the test under Rosetta and it compiled. Here are the tests that fail under Rosetta

Test-CwlUtils-2021.04.07_15-34-04--0400.xcresult.zip Test-CwlUtils-2021.04.07_15-33-58--0400.xcresult.zip Test-CwlUtils-2021.04.07_15-28-44--0400.xcresult.zip Test-CwlUtils-2021.04.07_15-28-43--0400.xcresult.zip Test-CwlUtils_macOSTests-2021.04.07_15-27-10--0400.xcresult.zip