Bug #12808: Ruby builds do not produce Process::UPTIME constant on macOS Sierra

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.1.9p490 (2016-03-30 revision 54437) [x86_64-darwin16]
• Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN

[iamasmith (Andrew Smith)]

Due to the fact that macOS Sierra does not define CLOCK_UPTIME in /usr/include/time.h the UPTIME constant is never generated during the Ruby build.

macOS defines CLOCK_UPTIME_RAW instead as..

clock that increments monotonically, in the same manner as CLOCK_MONOTONIC_RAW, but that does not increment while the system is asleep. The returned value
is identical to the result of mach_absolute_time() after the appropriate mach_timebase conversion is applied.

It appears this is done to provide a selection for uptime value based on sleeping or non sleeping return value.

[naruse (Yui NARUSE)]

• Status changed from Open to Closed

It will be a Ruby 2.4 feature by r56200.