On Windows, nanosleep and this_thread::sleep_for/sleep_until go
through winpthreads, which ends a wait on a 15.6 ms GetTickCount64
step. Blocking sceAudioOutOutput and sceAudioOut2ContextPush calls
returned in bursts about every 16 ms, a blocking sceAudio3dPortPush
ran at about 68 % of real time, and sceAudioInInput without a device
woke anywhere from 1 ms to 31 ms apart. They now sleep with
PreciseSleepUs or the new PreciseSleepUntil.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Comments in this codebase may only mark technical debt (per
docs/dev/CONVENTIONS.md), plus the #endif and namespace-close
structural exceptions. Removes the descriptive comments added on
this branch across PreciseWait.hpp, FormattingWide.cpp, the
direct-memory pool query/free-run plumbing, and the module loader
wiring, keeping the two allowed structural markers intact.
- Add FormattingWide.cpp implementing vswprintf_nid_postfix and
wprintf_nid_postfix, the only wide-char printf-family functions
upstream had left as unimplemented stubs (Formatting.cpp's checked
and unchecked narrow printf/scanf families are unaffected). Removes
the dead vswprintf_nid_postfix stub from Export.cpp.
- Add PreciseWait.hpp: std::condition_variable::wait_for cannot return
in under about one system tick on this MinGW toolchain regardless of
the requested budget, even with NtSetTimerResolution; PreciseSleepUs
uses a high-resolution waitable timer instead (~0.5ms vs ~15.6ms).
Header-only for now: its guest-side callers (Equeue/EventFlag/
Semaphore/AgcDriver wait loops) are out of scope for this change, so
it is not wired into them here.
popcoder565
OverkillLabs