[Bug libc/15555] New: pthread_condattr_setclock should accept CLOCK_MONOTONIC_COARSE

[Bug libc/15555] New: pthread_condattr_setclock should accept CLOCK_MONOTONIC_COARSE

[bernd.schubert at fastmail dot fm]

http://sourceware.org/bugzilla/show_bug.cgi?id=15555

            Bug ID: 15555
           Summary: pthread_condattr_setclock should accept
                    CLOCK_MONOTONIC_COARSE
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: bernd.schubert at fastmail dot fm
                CC: drepper.fsp at gmail dot com

I just tried to use pthread_condattr_setclock() and CLOCK_MONOTONIC_COARSE but 
that unexpectedly failed. So I checked the glibc code and noticed that only
CLOCK_MONOTONIC and CLOCK_REALTIME are supported. I'm not sure about the
clock_ids, but at least CLOCK_REALTIME_COARSE and CLOCK_MONOTONIC_COARSE should
be supported. 
Probably only CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID should be
forbidden, similar as musl libc does it.

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[Bug libc/15555] pthread_condattr_setclock should accept CLOCK_MONOTONIC_COARSE

[bugdal at aerifal dot cx]

http://sourceware.org/bugzilla/show_bug.cgi?id=15555

Rich Felker <bugdal at aerifal dot cx> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugdal at aerifal dot cx

--- Comment #1 from Rich Felker <bugdal at aerifal dot cx> ---
Due to the way it's implemented, the only clocks that can be supported are the
realtime and monotonic clocks. However, as POSIX only documents an error for
cpu-time-based clocks, not other implementation-defined clocks, I think it
would be nice to support as many as possible. The course versions of realtime
and monotonic could simply be remapped to the respective non-course versions
and would work fine.

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[Bug nptl/15555] pthread_condattr_setclock should accept CLOCK_MONOTONIC_COARSE

[jsm28 at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=15555

Joseph Myers <jsm28 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|libc                        |nptl

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[Bug nptl/15555] pthread_condattr_setclock should accept CLOCK_MONOTONIC_COARSE

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=15555

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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[Bug nptl/15555] pthread_condattr_setclock should accept CLOCK_MONOTONIC_COARSE, CLOCK_MONOTONIC_RAW

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=15555

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|triegel at redhat dot com          |

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