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- init
{
self = [super init];
@try {
struct pollfd p = { 0, POLLIN, 0 };
FDs = [[OFDataArray alloc] initWithItemSize:
sizeof(struct pollfd)];
p.fd = cancelFD[0];
[FDs addItem: &p];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[FDs release];
[super dealloc];
}
- (void)OF_addFileDescriptor: (int)fd
withEvents: (short)events
{
struct pollfd *FDs_ = [FDs items];
size_t i, count = [FDs count];
BOOL found = NO;
for (i = 0; i < count; i++) {
if (FDs_[i].fd == fd) {
FDs_[i].events |= events;
found = YES;
break;
}
}
if (!found) {
struct pollfd p = { fd, events | POLLERR, 0 };
[FDs addItem: &p];
}
}
- (void)OF_removeFileDescriptor: (int)fd
withEvents: (short)events
{
struct pollfd *FDs_ = [FDs items];
size_t i, nFDs = [FDs count];
for (i = 0; i < nFDs; i++) {
if (FDs_[i].fd == fd) {
FDs_[i].events &= ~events;
if ((FDs_[i].events & ~POLLERR) == 0)
[FDs removeItemAtIndex: i];
break;
}
}
}
- (void)OF_addFileDescriptorForReading: (int)fd
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- init
{
self = [super init];
@try {
struct pollfd p = { 0, POLLIN, 0 };
_FDs = [[OFDataArray alloc] initWithItemSize:
sizeof(struct pollfd)];
p.fd = _cancelFD[0];
[_FDs addItem: &p];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_FDs release];
[super dealloc];
}
- (void)OF_addFileDescriptor: (int)fd
withEvents: (short)events
{
struct pollfd *FDs = [_FDs items];
size_t i, count = [_FDs count];
BOOL found = NO;
for (i = 0; i < count; i++) {
if (FDs[i].fd == fd) {
FDs[i].events |= events;
found = YES;
break;
}
}
if (!found) {
struct pollfd p = { fd, events | POLLERR, 0 };
[_FDs addItem: &p];
}
}
- (void)OF_removeFileDescriptor: (int)fd
withEvents: (short)events
{
struct pollfd *FDs = [_FDs items];
size_t i, nFDs = [_FDs count];
for (i = 0; i < nFDs; i++) {
if (FDs[i].fd == fd) {
FDs[i].events &= ~events;
if ((FDs[i].events & ~POLLERR) == 0)
[_FDs removeItemAtIndex: i];
break;
}
}
}
- (void)OF_addFileDescriptorForReading: (int)fd
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[self OF_removeFileDescriptor: fd
withEvents: POLLOUT];
}
- (BOOL)observeWithTimeout: (double)timeout
{
void *pool = objc_autoreleasePoolPush();
struct pollfd *FDs_;
size_t i, nFDs, realEvents = 0;
[self OF_processQueue];
if ([self OF_processCache]) {
objc_autoreleasePoolPop(pool);
return YES;
}
objc_autoreleasePoolPop(pool);
FDs_ = [FDs items];
nFDs = [FDs count];
#ifdef OPEN_MAX
if (nFDs > OPEN_MAX)
@throw [OFOutOfRangeException exceptionWithClass: [self class]];
#endif
if (poll(FDs_, (nfds_t)nFDs,
(int)(timeout != -1 ? timeout * 1000 : -1)) < 1)
return NO;
for (i = 0; i < nFDs; i++) {
pool = objc_autoreleasePoolPush();
if (FDs_[i].revents & POLLIN) {
if (FDs_[i].fd == cancelFD[0]) {
char buffer;
OF_ENSURE(read(cancelFD[0], &buffer, 1) > 0);
FDs_[i].revents = 0;
objc_autoreleasePoolPop(pool);
continue;
}
if ([delegate respondsToSelector:
@selector(streamIsReadyForReading:)])
[delegate streamIsReadyForReading:
FDToStream[FDs_[i].fd]];
realEvents++;
}
if (FDs_[i].revents & POLLOUT) {
if ([delegate respondsToSelector:
@selector(streamIsReadyForWriting:)])
[delegate streamIsReadyForWriting:
FDToStream[FDs_[i].fd]];
realEvents++;
}
if (FDs_[i].revents & POLLERR) {
if ([delegate respondsToSelector:
@selector(streamDidReceiveException:)])
[delegate streamDidReceiveException:
FDToStream[FDs_[i].fd]];
realEvents++;
}
_[i].revents = 0;
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[self OF_removeFileDescriptor: fd
withEvents: POLLOUT];
}
- (BOOL)observeWithTimeout: (double)timeout
{
void *pool = objc_autoreleasePoolPush();
struct pollfd *FDs;
size_t i, nFDs, realEvents = 0;
[self OF_processQueue];
if ([self OF_processCache]) {
objc_autoreleasePoolPop(pool);
return YES;
}
objc_autoreleasePoolPop(pool);
FDs = [_FDs items];
nFDs = [_FDs count];
#ifdef OPEN_MAX
if (nFDs > OPEN_MAX)
@throw [OFOutOfRangeException exceptionWithClass: [self class]];
#endif
if (poll(FDs, (nfds_t)nFDs,
(int)(timeout != -1 ? timeout * 1000 : -1)) < 1)
return NO;
for (i = 0; i < nFDs; i++) {
pool = objc_autoreleasePoolPush();
if (FDs[i].revents & POLLIN) {
if (FDs[i].fd == _cancelFD[0]) {
char buffer;
OF_ENSURE(read(_cancelFD[0], &buffer, 1) > 0);
FDs[i].revents = 0;
objc_autoreleasePoolPop(pool);
continue;
}
if ([_delegate respondsToSelector:
@selector(streamIsReadyForReading:)])
[_delegate streamIsReadyForReading:
_FDToStream[FDs[i].fd]];
realEvents++;
}
if (FDs[i].revents & POLLOUT) {
if ([_delegate respondsToSelector:
@selector(streamIsReadyForWriting:)])
[_delegate streamIsReadyForWriting:
_FDToStream[FDs[i].fd]];
realEvents++;
}
if (FDs[i].revents & POLLERR) {
if ([_delegate respondsToSelector:
@selector(streamDidReceiveException:)])
[_delegate streamDidReceiveException:
_FDToStream[FDs[i].fd]];
realEvents++;
}
FDs[i].revents = 0;
objc_autoreleasePoolPop(pool);
}
if (realEvents == 0)
return NO;
return YES;
}
@end
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