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3d868baaa44152e7a4bd8c64905443fd9a08adce
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4 Commits

Author SHA1 Message Date
Morph 3d868baaa4 x64: cpu_wait: Make use of MWAITX in MicroSleep 
MWAITX is equivalent to UMWAIT on Intel's Alder Lake CPUs.
We can emulate TPAUSE by using MONITORX in conjunction with MWAITX to wait for 100K cycles.
 2023-06-28 01:38:55 -04:00
Morph dd12dd4c67 x64: Deduplicate RDTSC usage 2023-06-07 21:44:42 -04:00
Morph 981bc8aa1c x64: Simplify RDTSC on non-MSVC compilers 
Co-Authored-By: liamwhite <liamwhite@users.noreply.github.com>
 2023-03-27 17:45:22 -04:00
Morph 27c33ab73f x64: Add MicroSleep 
MicroSleep allows the processor to pause for a "short" amount of time (in the microsecond range). This is useful for spin-waiting that does not require nanosecond precision.
This uses the new TPAUSE instruction introduced on Intel's newest processors as part of the waitpkg instructions. For CPUs that do not support waitpkg instructions, this is equivalent to yield().

Co-Authored-By: liamwhite <liamwhite@users.noreply.github.com>
 2023-03-27 17:45:22 -04:00