win: clock implementation

util/misc/clock.h

Index: util/misc/clock.h
diff --git a/util/misc/clock.h b/util/misc/clock.h
index 88bdcd508c16d3bbed1def82b08b1c44c22e2306..e3f12ddfe07075b38a1c0f39f47e2496a93995a5 100644
--- a/util/misc/clock.h
+++ b/util/misc/clock.h
@@ -38,7 +38,7 @@ uint64_t ClockMonotonicNanoseconds();
 //!     may be slightly longer due to latencies and timer resolution.
 //!
 //! This function is resilient against the underlying `nanosleep()` system call
-//! being interrupted by a signal.
+//! being interrupted by a signal. On Windows, timeBeginPeriod is not adjusted.

[Mark Mentovai, 2014/12/16 23:06:53]

nanosleep is a POSIXism, so that sentence should say so.

`timeBeginPeriod()`? Also, I didn’t know what that did without looking it up,
and its name doesn’t make it obvious, so maybe tack on something like “to set
the timer resolution,” if that’s even correct.

[scottmg, 2014/12/17 01:01:28]

Done.

 void SleepNanoseconds(uint64_t nanoseconds);
 
 }  // namespace crashpad