Undefined symbols for architecture arm64: "_getmcontext" "_setmcontext" for Mac M1 CPU

[aivve]

[ 91%] Linking CXX executable karbowanecd
Undefined symbols for architecture arm64:
  "_getmcontext", referenced from:
      System::Dispatcher::Dispatcher() in libSystem.a(Dispatcher.cpp.o)
      _swapcontext in libSystem.a(Context.c.o)
  "_setmcontext", referenced from:
      _swapcontext in libSystem.a(Context.c.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

[aivve]

For arm mac cpu's need to rewrite Dispatcher

[driquelme]

Regarding the above comment, the change would require writing arm64 asm code?

[aivve]

Maybe not necessarily asm, perhaps something like Android version

[aivve]

Rewrote asm code but only got segmentation fault.

* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
    frame #0: 0x0000000000000000
error: memory read failed for 0x0

[aivve]

The size of pthread_mutex_t for some reason is 64 whereas on arm64 it should be 48 ??

[aivve]

After df8d9d9f4a5fbfaa6edaea965b11415164252fc3 it catchers the error:

ERROR   Exception: Dispatcher::getReusableContext, swapcontext failed, result=22, Invalid argument

not crashes but exits

[aivve]

same exception is caught on lastest Dispatcher version, also replaced context functions by using ucontext.h with the same result