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| author | Joseph Myers <joseph@codesourcery.com> | 2021-05-17 20:55:21 +0000 |
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| committer | Joseph Myers <joseph@codesourcery.com> | 2021-05-17 20:55:21 +0000 |
| commit | e5ac7bd679de52f70b52b2d0c2135de8d57cba8c (patch) | |
| tree | fbdc25a5d8de6301c5bdd0131a5d9ee38697f6db /time/time.h | |
| parent | c6b6b4f2c7ff62abf5da617bff9d8080631993c0 (diff) | |
| download | glibc-e5ac7bd679de52f70b52b2d0c2135de8d57cba8c.tar.gz glibc-e5ac7bd679de52f70b52b2d0c2135de8d57cba8c.tar.xz glibc-e5ac7bd679de52f70b52b2d0c2135de8d57cba8c.zip | |
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 'time/time.h')
| -rw-r--r-- | time/time.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/time/time.h b/time/time.h index 3bf206be0b..5a7f419905 100644 --- a/time/time.h +++ b/time/time.h @@ -259,6 +259,13 @@ extern int timespec_get (struct timespec *__ts, int __base) #endif +#if __GLIBC_USE (ISOC2X) +/* Set TS to resolution of time base BASE. */ +extern int timespec_getres (struct timespec *__ts, int __base) + __THROW; +#endif + + #ifdef __USE_XOPEN_EXTENDED /* Set to one of the following values to indicate an error. 1 the DATEMSK environment variable is null or undefined, |