using SIGSTOP (avoid interactive signal blocking)

[amosbird]

No description provided.

[MaskRay]

interactive signal blocking?

[amosbird]

SIGTSTP only works for processes attached to a tty. I'm not sure what term should be used.

[MaskRay]

SIGSTOP requires multiple continue commands in gdb while SIGTSTP only requires 1

[amosbird]

https://github.com/scottt/debugbreak looks better

[MaskRay]

I have changed the code to:

  const char* traceme = getenv("CCLS_TRACEME");
  if (traceme)
    raise(traceme[0] == 's' ? SIGSTOP : SIGTSTP);

SIGTRAP (debugbreak) only works when the process has been attached by a debugger, not in our use case.

[MaskRay]

LLVM also supports __builtin_debugtrap (llvm.debugtrap) for this purpose.

[amosbird]

Oh, OK. Good to know :)