clock_gettime

clock_gettime

[3] Mac OS X では clock_gettime が実装されていないようです。

[1] objective c - Monotonic clock on OSX - Stack Overflow () <http://stackoverflow.com/questions/11680461/monotonic-clock-on-osx>

[2] Issue 1159 - nativeclient - CLOCK_MONOTONIC is not defined - Monorail () <https://bugs.chromium.org/p/nativeclient/issues/detail?id=1159>