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authorJoseph Myers <joseph@codesourcery.com>2021-05-17 20:55:21 +0000
committerJoseph Myers <joseph@codesourcery.com>2021-05-17 20:55:21 +0000
commite5ac7bd679de52f70b52b2d0c2135de8d57cba8c (patch)
treefbdc25a5d8de6301c5bdd0131a5d9ee38697f6db /sysdeps/posix/clock_getres.c
parentc6b6b4f2c7ff62abf5da617bff9d8080631993c0 (diff)
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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.
Diffstat (limited to 'sysdeps/posix/clock_getres.c')
-rw-r--r--sysdeps/posix/clock_getres.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/posix/clock_getres.c b/sysdeps/posix/clock_getres.c
index 0690ae8fcf..1eb26af6f7 100644
--- a/sysdeps/posix/clock_getres.c
+++ b/sysdeps/posix/clock_getres.c
@@ -62,6 +62,7 @@ __clock_getres (clockid_t clock_id, struct timespec *res)
return retval;
}
+libc_hidden_def (__clock_getres)
versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
/* clock_getres moved to libc in version 2.17;