func New(dev Device, since EventID, interval time.Duration, flags CreateFlags,
paths ...string) *Stream {
cpaths := C.fswatch_make_mutable_array()
defer C.free(unsafe.Pointer(cpaths))
for _, dir := range paths {
path := C.CString(dir)
defer C.free(unsafe.Pointer(path))
str := C.CFStringCreateWithCString(nil, path, C.kCFStringEncodingUTF8)
defer C.free(unsafe.Pointer(str))
C.CFArrayAppendValue(cpaths, unsafe.Pointer(str))
}
csince := C.FSEventStreamEventId(since)
cinterval := C.CFTimeInterval(interval / time.Second)
cflags := C.FSEventStreamCreateFlags(flags &^ CF_USECFTYPES)
s := new(Stream)
s.Chan = make(chan []Event)
ctx := C.FSEventStreamContext{info: unsafe.Pointer(&s.Chan)}
var cstream C.FSEventStreamRef
if dev == 0 {
cstream = C.fswatch_create(&ctx, cpaths, csince, cinterval, cflags)
} else {
cdev := C.dev_t(dev)
cstream = C.fswatch_create_relative_to_device(
cdev, &ctx, cpaths, csince, cinterval, cflags)
}
s.cstream = cstream
return s
}
func populateHeaderUnix(h *tar.Header, fi os.FileInfo, seen map[uint64]string) {
st, ok := fi.Sys().(*syscall.Stat_t)
if !ok {
return
}
h.Uid = int(st.Uid)
h.Gid = int(st.Gid)
if st.Mode&syscall.S_IFMT == syscall.S_IFBLK || st.Mode&syscall.S_IFMT == syscall.S_IFCHR {
h.Devminor = int64(C.my_minor(C.dev_t(st.Rdev)))
h.Devmajor = int64(C.my_major(C.dev_t(st.Rdev)))
}
// If we have already seen this inode, generate a hardlink
p, ok := seen[uint64(st.Ino)]
if ok {
h.Linkname = p
h.Typeflag = tar.TypeLink
} else {
seen[uint64(st.Ino)] = h.Name
}
}
// Start listening to an event stream.
func (es *EventStream) Start() {
cPaths := C.ArrayCreateMutable(C.int(len(es.Paths)))
defer C.CFRelease(C.CFTypeRef(cPaths))
for _, p := range es.Paths {
p, _ = filepath.Abs(p)
cpath := C.CString(p)
defer C.free(unsafe.Pointer(cpath))
str := C.CFStringCreateWithCString(nil, cpath, C.kCFStringEncodingUTF8)
C.CFArrayAppendValue(cPaths, unsafe.Pointer(str))
}
since := C.FSEventStreamEventId(EventIDSinceNow)
if es.Resume {
since = C.FSEventStreamEventId(es.EventID)
}
if es.Events == nil {
es.Events = make(chan []Event)
}
es.registryID = registry.Add(es)
context := C.FSEventStreamContext{}
info := C.uintptr_t(es.registryID)
latency := C.CFTimeInterval(float64(es.Latency) / float64(time.Second))
if es.Device != 0 {
es.stream = C.EventStreamCreateRelativeToDevice(&context, info, C.dev_t(es.Device), cPaths, since, latency, C.FSEventStreamCreateFlags(es.Flags))
} else {
es.stream = C.EventStreamCreate(&context, info, cPaths, since, latency, C.FSEventStreamCreateFlags(es.Flags))
}
started := make(chan struct{})
go func() {
runtime.LockOSThread()
es.rlref = C.CFRunLoopGetCurrent()
C.FSEventStreamScheduleWithRunLoop(es.stream, es.rlref, C.kCFRunLoopDefaultMode)
C.FSEventStreamStart(es.stream)
close(started)
C.CFRunLoopRun()
}()
if !es.hasFinalizer {
runtime.SetFinalizer(es, finalizer)
es.hasFinalizer = true
}
<-started
}
func DeviceFromDevNum(u Udev, t DeviceType, num DevNum) Device {
return Device{C.udev_device_new_from_devnum(u.ptr, C.char(t), C.dev_t(num))}
}
// EventIDForDeviceBeforeTime returns an event ID before a given time.
func EventIDForDeviceBeforeTime(dev int32, before time.Time) uint64 {
tm := C.CFAbsoluteTime(before.Unix())
return uint64(C.FSEventsGetLastEventIdForDeviceBeforeTime(C.dev_t(dev), tm))
}
// https://developer.apple.com/library/mac/documentation/Darwin/Reference/FSEvents_Ref/Reference/reference.html#jumpTo_5
func LastEventBefore(dev Device, ts time.Time) EventID {
return EventID(
C.FSEventsGetLastEventIdForDeviceBeforeTime(
C.dev_t(dev),
C.CFAbsoluteTime(ts.Unix())))
}
func Minor(rdev uint64) uint {
minor := C.my_minor(C.dev_t(rdev))
return uint(minor)
}
func Major(rdev uint64) uint {
major := C.my_major(C.dev_t(rdev))
return uint(major)
}