The child setup function will be called after fork() but before
exec() on the child's side.
@destroy_notify will not be automatically called on the child's side
of the fork(). It will only be called when the last reference on the
#GSubprocessLauncher is dropped or when a new child setup function is
given.
%NULL can be given as @child_setup to disable the functionality.
Sets up a child setup function.
The child setup function will be called after fork() but before exec() on the child's side.
@destroy_notify will not be automatically called on the child's side of the fork(). It will only be called when the last reference on the #GSubprocessLauncher is dropped or when a new child setup function is given.
%NULL can be given as @child_setup to disable the functionality.
Child setup functions are only available on UNIX.