> SA_RESTART is also not a guaranteed solution for someone trying to be standards-compliant, since it's part of the XSI extensions, which may not be present or otherwise required for the application.
I need to backtrack on this. I just discovered SA_RESTART appears without surrounding XSI tags in the 2008 (Issue 7) standard. This was not the case in the 2004 (Issue 6) standard.
EDIT: I had here a discussion of whether dropping the tags was intentional, but now I see I missed the key sentence in the 2008 update: "Functionality relating to the Realtime Signals Extension option is moved to the Base."
SA_RESTART is core POSIX functionality from the 2008 edition on. Of course there are many systems out there not compliant with 2008, but this does change the picture somewhat.
I need to backtrack on this. I just discovered SA_RESTART appears without surrounding XSI tags in the 2008 (Issue 7) standard. This was not the case in the 2004 (Issue 6) standard.
EDIT: I had here a discussion of whether dropping the tags was intentional, but now I see I missed the key sentence in the 2008 update: "Functionality relating to the Realtime Signals Extension option is moved to the Base."
SA_RESTART is core POSIX functionality from the 2008 edition on. Of course there are many systems out there not compliant with 2008, but this does change the picture somewhat.