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@throw [OFInitializationFailedException
exceptionWithClass: [self class]];
if ((flags = fcntl(_kernelQueue, F_GETFD, 0)) != -1)
fcntl(_kernelQueue, F_SETFD, flags | FD_CLOEXEC);
#endif
_changeList = [[OFDataArray alloc] initWithItemSize:
sizeof(struct kevent)];
EV_SET(&event, _cancelFD[0], EVFILT_READ, EV_ADD, 0, 0, 0);
[_changeList addItem: &event];
_removedArray = [[OFMutableArray alloc] init];
if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
@throw [OFInitializationFailedException
exceptionWithClass: [self class]];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
close(_kernelQueue);
[_changeList release];
[_removedArray release];
[super dealloc];
}
- (void)OF_addObjectForReading: (id)object
- (void)addObjectForReading: (id <OFReadyForReadingObserving>)object
{
struct kevent event;
if ([_changeList count] >= INT_MAX)
@throw [OFOutOfRangeException exception];
memset(&event, 0, sizeof(event));
event.ident = [object fileDescriptorForReading];
event.filter = EVFILT_READ;
event.flags = EV_ADD;
#ifndef OF_NETBSD
event.udata = object;
#else
event.udata = (intptr_t)object;
#endif
[_changeList addItem: &event];
if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
}
- (void)OF_addObjectForWriting: (id)object
- (void)addObjectForWriting: (id <OFReadyForWritingObserving>)object
{
struct kevent event;
if ([_changeList count] >= INT_MAX)
@throw [OFOutOfRangeException exception];
memset(&event, 0, sizeof(event));
event.ident = [object fileDescriptorForWriting];
event.filter = EVFILT_WRITE;
event.flags = EV_ADD;
#ifndef OF_NETBSD
event.udata = object;
#else
event.udata = (intptr_t)object;
#endif
[_changeList addItem: &event];
if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
}
- (void)OF_removeObjectForReading: (id)object
- (void)removeObjectForReading: (id <OFReadyForReadingObserving>)object
{
struct kevent event;
memset(&event, 0, sizeof(event));
event.ident = [object fileDescriptorForReading];
event.filter = EVFILT_READ;
event.flags = EV_DELETE;
[_changeList addItem: &event];
if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
}
- (void)OF_removeObjectForWriting: (id)object
- (void)removeObjectForWriting: (id <OFReadyForWritingObserving>)object
{
struct kevent event;
memset(&event, 0, sizeof(event));
event.ident = [object fileDescriptorForWriting];
event.filter = EVFILT_WRITE;
event.flags = EV_DELETE;
[_changeList addItem: &event];
if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
}
- (void)observeForTimeInterval: (of_time_interval_t)timeInterval
{
void *pool = objc_autoreleasePoolPush();
struct timespec timeout;
struct kevent eventList[EVENTLIST_SIZE];
int i, events;
timeout.tv_sec = (time_t)timeInterval;
timeout.tv_nsec = lrint((timeInterval - timeout.tv_sec) * 1000000000);
/*
* Make sure to keep the streams retained and thus the file descriptors
* valid until the actual change has been performed.
*/
[self OF_processQueueAndStoreRemovedIn: _removedArray];
[self OF_processReadBuffers];
objc_autoreleasePoolPop(pool);
events = kevent(_kernelQueue, [_changeList items],
events = kevent(_kernelQueue, NULL, 0, eventList, EVENTLIST_SIZE,
(int)[_changeList count], eventList, EVENTLIST_SIZE,
(timeInterval != -1 ? &timeout : NULL));
if (events < 0)
@throw [OFObserveFailedException exceptionWithObserver: self
errNo: errno];
[_changeList removeAllItems];
[_removedArray removeAllObjects];
for (i = 0; i < events; i++) {
if (eventList[i].flags & EV_ERROR)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: (int)eventList[i].data];
if (eventList[i].ident == _cancelFD[0]) {
|