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current monotonic milliseconds **since start of this application**
Also added TSPrinter, a simple millisecond timestamp prepending `print*()` wrapper for a {@link PrintStream}.
Test coverage via TestClock01.
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Win32 clock_gettime() implementation.
Consider return code on failed native clock_gettime(..) call
- Return Instant.EPOCH for all Instant variations (essentially 0)
- Return 0 for all 'long' variations (ms, ns)
Add Win32 clock_gettime() implementation.
- Source: https://github.com/Alexpux/mingw-w64/blob/master/mingw-w64-libraries/winpthreads/src/clock.c
- Public Domain within mingw-w64, included here to simplify linkage.
- Tested on Win10 64bit w/ TestTextRendererNEWT00, all values are OK
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duration since module startup and not time.
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startup, retrievable via getMonotonicStartupTime(). (performance)
Settings two long fields in getMonotonicTime() and creating Instant and using Duration
for high-frequency counter is too expensive.
currentTimeNanos() subtracts the startup time from the current monotonic time and returns the
resulting duration in nanoseconds, which lasts for 292 years since module startup.
This satisfies performance counter requirements.
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(sec + nsec), currentTimeMillis() is also monotonic now, reused by Platform. Dropped Platform.currentTimeMicros()
Clock and its implementation was copied from jaulibs, a spin-off from Direct-BT.
The implementation uses `clock_gettime(CLOCK_MONOTONIC, &t)` and is considered safe and high-performant
as it avoids a kernel call via VDSO (GNU/Linux).
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