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@implementation OFKernelEventObserver_poll
- 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
- (void)OF_removeFileDescriptor: (int)fd
withEvents: (short)events
if (FDs[i].events == 0)
[_FDs removeItemAtIndex: i];
break;
}
}
}
- (void)OF_addFileDescriptorForReading: (int)fd
{
[self OF_addFileDescriptor: fd
withEvents: POLLIN];
}
- (void)OF_addFileDescriptorForWriting: (int)fd
{
[self OF_addFileDescriptor: fd
withEvents: POLLOUT];
}
- (void)OF_removeFileDescriptorForReading: (int)fd
{
[self OF_removeFileDescriptor: fd
withEvents: POLLIN];
- (void)OF_removeFileDescriptorForWriting: (int)fd
{
[self OF_removeFileDescriptor: fd
withEvents: POLLOUT];
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@implementation OFKernelEventObserver_poll
- init
{
self = [super init];
@try {
struct pollfd p = { _cancelFD[0], POLLIN, 0 };
_FDs = [[OFDataArray alloc] initWithItemSize:
sizeof(struct pollfd)];
[_FDs addItem: &p];
_maxFD = _cancelFD[0];
_FDToObject = [self allocMemoryWithSize: sizeof(id)
count: _maxFD + 1];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_FDs release];
[super dealloc];
}
- (void)OF_addObject: (id)object
fileDescriptor: (int)fd
events: (short)events
{
struct pollfd *FDs = [_FDs items];
size_t i, count = [_FDs count];
bool found = false;
for (i = 0; i < count; i++) {
if (FDs[i].fd == fd) {
FDs[i].events |= events;
found = true;
break;
}
}
if (!found) {
struct pollfd p = { fd, events, 0 };
if (fd > _maxFD) {
_maxFD = fd;
_FDToObject = [self resizeMemory: _FDToObject
size: sizeof(id)
count: _maxFD + 1];
}
_FDToObject[fd] = object;
[_FDs addItem: &p];
}
}
- (void)OF_removeObject: (id)object
fileDescriptor: (int)fd
events: (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 == 0) {
/*
* TODO: Remove from and resize _FDToObject,
* adjust _maxFD.
*/
[_FDs removeItemAtIndex: i];
}
break;
}
}
}
- (void)OF_addObjectForReading: (id)object
{
[self OF_addObject: object
fileDescriptor: [object fileDescriptorForReading]
events: POLLIN];
}
- (void)OF_addObjectForWriting: (id)object
{
[self OF_addObject: object
fileDescriptor: [object fileDescriptorForWriting]
events: POLLOUT];
}
- (void)OF_removeObjectForReading: (id)object
{
[self OF_removeObject: object
fileDescriptor: [object fileDescriptorForReading]
events: POLLIN];
}
- (void)OF_removeObjectForWriting: (id)object
{
[self OF_removeObject: object
fileDescriptor: [object fileDescriptorForWriting]
events: POLLOUT];
}
- (bool)observeForTimeInterval: (of_time_interval_t)timeInterval
{
void *pool = objc_autoreleasePoolPush();
struct pollfd *FDs;
int events;
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@throw [OFObserveFailedException exceptionWithObserver: self
errNo: errno];
if (events == 0)
return false;
for (i = 0; i < nFDs; i++) {
if (FDs[i].revents & POLLIN) {
if (FDs[i].fd == _cancelFD[0]) {
char buffer;
OF_ENSURE(read(_cancelFD[0], &buffer, 1) == 1);
FDs[i].revents = 0;
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@throw [OFObserveFailedException exceptionWithObserver: self
errNo: errno];
if (events == 0)
return false;
for (i = 0; i < nFDs; i++) {
if (FDs[i].fd > _maxFD)
@throw [OFOutOfRangeException exception];
if (FDs[i].revents & POLLIN) {
if (FDs[i].fd == _cancelFD[0]) {
char buffer;
OF_ENSURE(read(_cancelFD[0], &buffer, 1) == 1);
FDs[i].revents = 0;
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