I use emacs and have command that runs rdmd. Very rarely, as a guess maybe one in 100 calls to build, rdmd does not make any progress and I have to kill it. So, a ps -efww shows something like below and over 15 minutes have passed (normally max time to build and run is a couple of seconds)

UID        PID  PPID  C STIME TTY          TIME CMD
1000      4065  4063  0 10:44 pts/12   00:00:00 rdmd -debug -g -w -property foo.d

No progress is being made.
So, my questions:
- is this a potential deadlock in rdmd? I believe it attempts to parallelize the work.
- has anyone experienced this?
- on linux is there a way, once in this state to provide any information that would be helpful. strace during on a complete run could help - but it is too late for that.

Thanks
Dan

> No progress is being made.
> So, my questions:
> - is this a potential deadlock in rdmd? I believe it attempts to parallelize the work.
> - has anyone experienced this?

I don't remember experiencing this with rdmd, but I have seen something similar with my scripts that were starting processes from multiple threads in parallel (using std.parallelism).