mirror of
https://github.com/tailscale/tailscale.git
synced 2026-04-05 07:03:43 -04:00
27 lines
746 B
Go
27 lines
746 B
Go
package uring
|
|
|
|
// #cgo CFLAGS: -I${SRCDIR}/liburing/src/include
|
|
// #cgo LDFLAGS: -L${SRCDIR}/liburing/src/ -luring
|
|
// #include "io_uring_linux.c"
|
|
import "C"
|
|
|
|
import (
|
|
"syscall"
|
|
"unsafe"
|
|
)
|
|
|
|
// hasUring reports whether it is possible to use io_uring syscalls on the system.
|
|
func uringSupported() bool {
|
|
probe, err := C.io_uring_get_probe()
|
|
if err == nil && probe != nil {
|
|
C.free(unsafe.Pointer(probe))
|
|
}
|
|
return err != syscall.ENOSYS
|
|
}
|
|
|
|
// If/when we want to probe for specific io_uring capabilities,
|
|
// rather than just the presence of the syscalls,
|
|
// this code by Julian Knodt might be handy:
|
|
// https://gist.github.com/JulianKnodt/e7030739d163f5251eb47f8ac1d67b62
|
|
// (See discussion in https://github.com/tailscale/tailscale/pull/2371.)
|