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@implementation OFStreamObserver_kqueue
- init
{
self = [super init];
@try {
if ((kernelQueue = kqueue()) == -1)
@throw [OFInitializationFailedException
exceptionWithClass: [self class]];
changeList = [[OFDataArray alloc] initWithItemSize:
sizeof(struct kevent)];
[self OF_addFileDescriptorForReading: cancelFD[0]];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
close(kernelQueue);
[changeList release];
[super dealloc];
}
- (void)OF_addFileDescriptorForReading: (int)fd
{
struct kevent event;
if ([changeList count] >= INT_MAX)
@throw [OFOutOfRangeException exceptionWithClass: [self class]];
EV_SET(&event, fd, EVFILT_READ, EV_ADD, 0, 0, 0);
[changeList addItem: &event];
}
- (void)OF_addFileDescriptorForWriting: (int)fd
{
struct kevent event;
if ([changeList count] >= INT_MAX)
@throw [OFOutOfRangeException exceptionWithClass: [self class]];
EV_SET(&event, fd, EVFILT_WRITE, EV_ADD, 0, 0, 0);
[changeList addItem: &event];
}
- (void)OF_removeFileDescriptorForReading: (int)fd
{
struct kevent event;
EV_SET(&event, fd, EVFILT_READ, EV_DELETE, 0, 0, 0);
[changeList addItem: &event];
}
- (void)OF_removeFileDescriptorForWriting: (int)fd
{
struct kevent event;
EV_SET(&event, fd, EVFILT_WRITE, EV_DELETE, 0, 0, 0);
[changeList addItem: &event];
}
- (BOOL)observeWithTimeout: (double)timeout
{
void *pool = objc_autoreleasePoolPush();
struct timespec timespec;
struct kevent eventList[EVENTLIST_SIZE];
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@implementation OFStreamObserver_kqueue
- init
{
self = [super init];
@try {
if ((_kernelQueue = kqueue()) == -1)
@throw [OFInitializationFailedException
exceptionWithClass: [self class]];
_changeList = [[OFDataArray alloc] initWithItemSize:
sizeof(struct kevent)];
[self OF_addFileDescriptorForReading: _cancelFD[0]];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
close(_kernelQueue);
[_changeList release];
[super dealloc];
}
- (void)OF_addFileDescriptorForReading: (int)fd
{
struct kevent event;
if ([_changeList count] >= INT_MAX)
@throw [OFOutOfRangeException exceptionWithClass: [self class]];
EV_SET(&event, fd, EVFILT_READ, EV_ADD, 0, 0, 0);
[_changeList addItem: &event];
}
- (void)OF_addFileDescriptorForWriting: (int)fd
{
struct kevent event;
if ([_changeList count] >= INT_MAX)
@throw [OFOutOfRangeException exceptionWithClass: [self class]];
EV_SET(&event, fd, EVFILT_WRITE, EV_ADD, 0, 0, 0);
[_changeList addItem: &event];
}
- (void)OF_removeFileDescriptorForReading: (int)fd
{
struct kevent event;
EV_SET(&event, fd, EVFILT_READ, EV_DELETE, 0, 0, 0);
[_changeList addItem: &event];
}
- (void)OF_removeFileDescriptorForWriting: (int)fd
{
struct kevent event;
EV_SET(&event, fd, EVFILT_WRITE, EV_DELETE, 0, 0, 0);
[_changeList addItem: &event];
}
- (BOOL)observeWithTimeout: (double)timeout
{
void *pool = objc_autoreleasePoolPush();
struct timespec timespec;
struct kevent eventList[EVENTLIST_SIZE];
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if ([self OF_processCache]) {
objc_autoreleasePoolPop(pool);
return YES;
}
objc_autoreleasePoolPop(pool);
events = kevent(kernelQueue, [changeList items],
(int)[changeList count], eventList, EVENTLIST_SIZE,
(timeout == -1 ? NULL : ×pec));
if (events < 0)
return NO;
[changeList removeAllItems];
if (events == 0)
return NO;
for (i = 0; i < events; i++) {
if (eventList[i].ident == cancelFD[0]) {
char buffer;
OF_ENSURE(read(cancelFD[0], &buffer, 1) > 0);
continue;
}
realEvents++;
pool = objc_autoreleasePoolPush();
if (eventList[i].flags & EV_ERROR) {
if ([delegate respondsToSelector:
@selector(streamDidReceiveException:)])
[delegate streamDidReceiveException:
FDToStream[eventList[i].ident]];
objc_autoreleasePoolPop(pool);
continue;
}
switch (eventList[i].filter) {
case EVFILT_READ:
if ([delegate respondsToSelector:
@selector(streamIsReadyForReading:)])
[delegate streamIsReadyForReading:
FDToStream[eventList[i].ident]];
break;
case EVFILT_WRITE:
if ([delegate respondsToSelector:
@selector(streamIsReadyForWriting:)])
[delegate streamIsReadyForWriting:
FDToStream[eventList[i].ident]];
break;
default:
assert(0);
}
objc_autoreleasePoolPop(pool);
}
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if ([self OF_processCache]) {
objc_autoreleasePoolPop(pool);
return YES;
}
objc_autoreleasePoolPop(pool);
events = kevent(_kernelQueue, [_changeList items],
(int)[_changeList count], eventList, EVENTLIST_SIZE,
(timeout == -1 ? NULL : ×pec));
if (events < 0)
return NO;
[_changeList removeAllItems];
if (events == 0)
return NO;
for (i = 0; i < events; i++) {
if (eventList[i].ident == _cancelFD[0]) {
char buffer;
OF_ENSURE(read(_cancelFD[0], &buffer, 1) > 0);
continue;
}
realEvents++;
pool = objc_autoreleasePoolPush();
if (eventList[i].flags & EV_ERROR) {
if ([_delegate respondsToSelector:
@selector(streamDidReceiveException:)])
[_delegate streamDidReceiveException:
_FDToStream[eventList[i].ident]];
objc_autoreleasePoolPop(pool);
continue;
}
switch (eventList[i].filter) {
case EVFILT_READ:
if ([_delegate respondsToSelector:
@selector(streamIsReadyForReading:)])
[_delegate streamIsReadyForReading:
_FDToStream[eventList[i].ident]];
break;
case EVFILT_WRITE:
if ([_delegate respondsToSelector:
@selector(streamIsReadyForWriting:)])
[_delegate streamIsReadyForWriting:
_FDToStream[eventList[i].ident]];
break;
default:
assert(0);
}
objc_autoreleasePoolPop(pool);
}
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