github.com/wasilibs/wazerox@v0.0.0-20240124024944-4923be63ab5f/internal/sysfs/nonblock_windows.go (about)

     1  package sysfs
     2  
     3  import (
     4  	"io/fs"
     5  	"syscall"
     6  
     7  	"github.com/wasilibs/wazerox/experimental/sys"
     8  )
     9  
    10  func setNonblock(fd uintptr, enable bool) sys.Errno {
    11  	// We invoke the syscall, but this is currently no-op.
    12  	return sys.UnwrapOSError(syscall.SetNonblock(syscall.Handle(fd), enable))
    13  }
    14  
    15  func isNonblock(f *osFile) bool {
    16  	// On Windows, we support non-blocking reads only on named pipes.
    17  	isValid := false
    18  	st, errno := f.Stat()
    19  	if errno == 0 {
    20  		isValid = st.Mode&fs.ModeNamedPipe != 0
    21  	}
    22  	return isValid && f.flag&sys.O_NONBLOCK == sys.O_NONBLOCK
    23  }