Add C2X timespec_getres
commite5ac7bd679de52f70b52b2d0c2135de8d57cba8c
authorJoseph Myers <joseph@codesourcery.com>
Mon, 17 May 2021 20:55:21 +0000 (17 20:55 +0000)
committerJoseph Myers <joseph@codesourcery.com>
Mon, 17 May 2021 20:55:21 +0000 (17 20:55 +0000)
treefbdc25a5d8de6301c5bdd0131a5d9ee38697f6db
parentc6b6b4f2c7ff62abf5da617bff9d8080631993c0
Add C2X timespec_getres

ISO C2X adds a timespec_getres function alongside the C11
timespec_get, with functionality similar to that of POSIX clock_getres
(including allowing a NULL pointer to be passed to the function).
Implement this function for glibc, similarly to the implementation of
timespec_get.

This includes a basic test like that of timespec_get, but no
documentation in the manual, given that TIME_UTC and timespec_get
aren't documented in the manual at all.  The handling of 64-bit time
follows that in timespec_get; people maintaining patch series for
64-bit time will need to update them accordingly (to export
__timespec_getres64, redirect calls in time.h and run the test for
_TIME_BITS=64).

Tested for x86_64 and x86, and (previous version; only testcase
differs) with build-many-glibcs.py.
44 files changed:
NEWS
include/time.h
sysdeps/mach/hurd/i386/libc.abilist
sysdeps/posix/clock_getres.c
sysdeps/unix/sysv/linux/aarch64/libc.abilist
sysdeps/unix/sysv/linux/alpha/libc.abilist
sysdeps/unix/sysv/linux/arc/libc.abilist
sysdeps/unix/sysv/linux/arm/be/libc.abilist
sysdeps/unix/sysv/linux/arm/le/libc.abilist
sysdeps/unix/sysv/linux/clock_getres.c
sysdeps/unix/sysv/linux/csky/libc.abilist
sysdeps/unix/sysv/linux/hppa/libc.abilist
sysdeps/unix/sysv/linux/i386/libc.abilist
sysdeps/unix/sysv/linux/ia64/libc.abilist
sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
sysdeps/unix/sysv/linux/nios2/libc.abilist
sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
sysdeps/unix/sysv/linux/sh/be/libc.abilist
sysdeps/unix/sysv/linux/sh/le/libc.abilist
sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
sysdeps/unix/sysv/linux/timespec_getres.c [copied from time/clock_getres.c with 50% similarity]
sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
time/Makefile
time/Versions
time/clock_getres.c
time/time.h
time/timespec_getres.c [copied from time/clock_getres.c with 50% similarity]
time/tst-timespec_getres.c [new file with mode: 0644]