WAITPKG

Collaboration diagram for WAITPKG:

Functions
static void	native::umwait::monitor (volatile void *p) noexcept
static std::uint8_t	native::umwait::mwait (std::uint64_t timer=0) noexcept native_blocking

Detailed Description

UMONITOR, UMWAIT and TPAUSE require x86_feature::waitpkg, reported by CPUID leaf 7 subleaf 0 ECX bit 5. No vector-state feature is required.

Function Documentation

monitor()

void native::umwait::monitor ( volatile void * p )

staticnoexcept

Arm UMONITOR for p; call only when supported is true.

Definition at line 135 of file native.x86.wait.ccm.

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mwait()

std::uint8_t native::umwait::mwait ( std::uint64_t timer = 0 )

staticnoexcept

Issue UMWAIT with this absolute deadline operand; return the intrinsic status.

Definition at line 138 of file native.x86.wait.ccm.

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