Lennart Poettering
837659825f
Usually we want to embed PidRef in other structures, but sometimes it makes sense to allocate it on the heap in case it should be used standalone. Add helpers for that. Primary usecase: use as key in Hashmap objects, that for example map process to unit objects in PID 1. This adds pidref_free()/pidref_freep() for freeing such an allocated struct, as well as pidref_dup() (for duplicating an existing PidRef on the heap 1:1), and pidref_new_pid() (for allocating a new PidRef from a PID).
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