Function MmapShmpDataV1

fbclock/shmem.go:188–194

MmapShmpDataV1 mmaps open file as fbclock shared memory. Used in tests only.

(fd uintptr)

// MmapShmpDataV1 mmaps open file as fbclock shared memory. Used in tests only.
func MmapShmpDataV1(fd uintptr) (unsafe.Pointer, error) {
	data, err := unix.Mmap(int(fd), 0, C.FBCLOCK_SHMDATA_SIZE, unix.PROT_READ, unix.MAP_SHARED)
	if err != nil {
		return nil, err
	}
	return unsafe.Pointer(&data[0]), nil
}

// ReadFBClockData will read Data from mmaped fbclock shared memory. Used in tests only
func ReadFBClockData(shmp unsafe.Pointer) (*DataV2, error) {