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SuspendingClock on Windows does not suspend #63225

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Merged
merged 10 commits into from
Jan 28, 2023
Merged

SuspendingClock on Windows does not suspend #63225

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27c684f
SuspendingClock on Windows does not suspend #63224
grynspan Jan 25, 2023
aaace52
Fix inaccurate values for swift_get_clock_res() on Windows
grynspan Jan 25, 2023
95c0926
QueryUnbiasedInterruptTimePrecise() isn't always available so it must…
grynspan Jan 26, 2023
07f8b2d
- Add more comments explaining why we use GetProcAddress().
grynspan Jan 26, 2023
9d0cec5
Do 128-bit math with clang extensions instead of MSVC++ extensions/in…
grynspan Jan 26, 2023
48a5fb3
Use swift_Concurrency_fatalError() instead of swift::fatalError() (oops)
grynspan Jan 26, 2023
9af8d99
Remove commented-out MSVC++ 128-bit math
grynspan Jan 26, 2023
5444f22
Don't need immintrin.h
grynspan Jan 27, 2023
5191939
Get rid of redundant timespecs
grynspan Jan 27, 2023
4757e68
Every platform has time.h, so remove the HAS_TIME check
grynspan Jan 27, 2023
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16 changes: 4 additions & 12 deletions stdlib/public/Concurrency/Clock.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -87,18 +87,10 @@ void swift_get_time(
*seconds = suspending.tv_sec;
*nanoseconds = suspending.tv_nsec;
#elif defined(_WIN32)
LARGE_INTEGER freq;
QueryPerformanceFrequency(&freq);
LARGE_INTEGER count;
QueryPerformanceCounter(&count);
*seconds = count.QuadPart / freq.QuadPart;
if (freq.QuadPart < 1000000000) {
*nanoseconds =
((count.QuadPart % freq.QuadPart) * 1000000000) / freq.QuadPart;
} else {
*nanoseconds =
(count.QuadPart % freq.QuadPart) * (1000000000.0 / freq.QuadPart);
}
ULONGLONG unbiasedTime;
QueryUnbiasedInterruptTimePrecise(&unbiasedTime);
*seconds = unbiasedTime / 10000000ULL; // unit is 100ns
*nanoseconds = unbiasedTime % 10000000ULL;
#else
#error Missing platform suspending time definition
#endif
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