Correction: Sorry, but it looks there is only a very subtle difference between the two. The only difference I see, is that, since in the case of execl, the parent effectively is replaced, i.e. dies, the child process is awarded its parent PID. This is not the case when a parent process creates a child process and exits immediately, as the child will have a different PID.
On 05/09/2015, Edward Bartolo <edb...@gmail.com> wrote: > Quote: <<An 'orphaned process' is one whose parent has exited after creating > a > process (that's done via fork and not via execve) and it's not adopted > by the grand parent but by init.>> > > So what is the difference between an "orphaned process", i.e. a > process whose parent has exited after giving birth to a child process > and one which replaces the original process effectively giving its > parent a death sentence? > > Sorry, but it looks there is only a very subtle difference between the > two. The only difference I see, is that, since in the case of execl, > the parent effectively is replaced, i.e. dies, it is also awarded its > parent PID. This is not the case when a parent process creates a child > process and exits immediately, as the child will have a different PID. > > On 05/09/2015, Rainer Weikusat <rainerweiku...@virginmedia.com> wrote: >> Edward Bartolo <edb...@gmail.com> writes: >> >> [...] >> >>> Using "ps xao pid,ppid,comm", I found what I described to you: >>> precisely, that orphaned processes were adopted by the GUI frontend. >> >> There are no 'orphaned processes' in this case because execl does not >> create a new process. It runs a new program in the same process and >> since the parent of this process was the frontend process before the >> execl, it's still the parent of this process afterwards. >> >> An 'orphaned process' is one whose parent has exited after creating a >> process (that's done via fork and not via execve) and it's not adopted >> by the grand parent but by init. >> _______________________________________________ >> Dng mailing list >> Dng@lists.dyne.org >> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng >> > _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
