Interface MMIOController

pkg/eventfd/eventfd.go:146–154

MMIOController controls eventfd memory-mapped I/O.

// MMIOController controls eventfd memory-mapped I/O.
type MMIOController interface {
	// Enabled returns true if writing to the associated MMIO address can
	// succeed. This is inherently racy, so if the memory-mapped write faults,
	// the eventfd will fall back to writing using a syscall.
	Enabled() bool

	// Close is called when the associated Eventfd is closed.
	Close(ev Eventfd)
}

// EnableMMIO causes future calls to ev.Write() to use memory-mapped writes to
// addr, subject to ctrl. EnableMMIO cannot be called concurrently with Write,