Feature #3310
Updated by Junxiao Shi almost 10 years ago
Write the PID of `nfd` process to a file, so that it can be signaled with `kill` precisely.
Necessity:
In certain experiments including but not limited to Mini-NDN, multiple `nfd` processes can be running in the same PID namespace.
`pkill` and `killall` cannot precisely signal one `nfd` process without affecting other `nfd` processes.
This issue includes:
* design the format of PID file
* decide the location of PID file, whether and how it can be configured
* decide who should write the PID file
* implement the feature