Alter configuration to execute thread pinning when desired

[plasorak]

There can now be more than on thread pinning file, and use need to specify after which is an FSM transition after which the run control will automatically execute the thread pinning.

[plasorak]

To use this one must use DUNE-DAQ/nanorc#243

[plasorak]

To use this, the configuration for the readout should be:

"readout": {
  "...",
  "thread_pinning_files": [
   {
      "file": "path/to/file.json",
      "after": "conf"
    },
    {
      "file": "path/to/another/file.json",
      "after": "boot"
    },
  ],
  "..."
}

Where "after" is an FSM transition in the run control.

This generates a boot.json with:

{
  "...",
  "scripts": {
    "thread_pinning_0": {
      "after": "conf",
      "cmd": [
        "readout-affinity.py --pinfile ${DUNEDAQ_THREAD_PIN_FILE}"
      ],
      "env": {
        "DUNEDAQ_THREAD_PIN_FILE": "path/to/file.json",
        "LD_LIBRARY_PATH": "getenv",
        "PATH": "getenv"
      }
    },
    "thread_pinning_1": {
      "after": "boot",
      "cmd": [
        "readout-affinity.py --pinfile ${DUNEDAQ_THREAD_PIN_FILE}"
      ],
      "env": {
        "DUNEDAQ_THREAD_PIN_FILE": "path/to/another/file.json",
        "LD_LIBRARY_PATH": "getenv",
        "PATH": "getenv"
      }
    }
  },
  "..."
}

That is then executed parsed and executed by nanorc.

[plasorak]

Not going in for v4.3.0. Changed the base branch to v4.4.0.

[wesketchum]

Just tested at EHN1 and it appears to work. Thanks @plasorak