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#import "OFDataArray.h"
#import "OFArray.h"
#import "OFInitializationFailedException.h"
#import "OFObserveFailedException.h"
#import "OFOutOfRangeException.h"
#import "socket_helpers.h"
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#import "OFDataArray.h"
#import "OFArray.h"
#import "OFInitializationFailedException.h"
#import "OFObserveFailedException.h"
#import "OFOutOfRangeException.h"
#define EVENTLIST_SIZE 64
@implementation OFKernelEventObserver_kqueue
- init
{
self = [super init];
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}
- (bool)observeForTimeInterval: (of_time_interval_t)timeInterval
{
void *pool = objc_autoreleasePoolPush();
struct timespec timeout;
struct kevent eventList[EVENTLIST_SIZE];
int i, events, errNo, realEvents = 0;
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];
if ([self OF_processCache]) {
objc_autoreleasePoolPop(pool);
return true;
}
objc_autoreleasePoolPop(pool);
events = kevent(_kernelQueue, [_changeList items],
(int)[_changeList count], eventList, EVENTLIST_SIZE,
(timeInterval == -1 ? NULL : &timeout));
errNo = errno;
[_removedArray removeAllObjects];
errNo: errNo];
[_changeList removeAllItems];
if (events == 0)
return false;
for (i = 0; i < events; i++) {
if (eventList[i].ident == _cancelFD[0]) {
char buffer;
OF_ENSURE(read(_cancelFD[0], &buffer, 1) > 0);
continue;
}
realEvents++;
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}
- (bool)observeForTimeInterval: (of_time_interval_t)timeInterval
{
void *pool = objc_autoreleasePoolPush();
struct timespec timeout;
struct kevent eventList[EVENTLIST_SIZE];
int i, events, realEvents = 0;
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];
if ([self OF_processCache]) {
objc_autoreleasePoolPop(pool);
return true;
}
objc_autoreleasePoolPop(pool);
events = kevent(_kernelQueue, [_changeList items],
(int)[_changeList count], eventList, EVENTLIST_SIZE,
(timeInterval == -1 ? NULL : &timeout));
if (events < 0)
return [OFObserveFailedException exceptionWithObserver: self
errNo: errno];
[_changeList removeAllItems];
[_removedArray removeAllObjects];
if (events == 0)
return false;
for (i = 0; i < events; i++) {
if (eventList[i].ident == _cancelFD[0]) {
char buffer;
assert(eventList[i].filter == EVFILT_READ);
OF_ENSURE(read(_cancelFD[0], &buffer, 1) == 1);
continue;
}
pool = objc_autoreleasePoolPush();
switch (eventList[i].filter) {
case EVFILT_READ:
if ([_delegate respondsToSelector:
@selector(objectIsReadyForReading:)])
[_delegate objectIsReadyForReading:
_FDToObject[eventList[i].ident]];
break;
case EVFILT_WRITE:
if ([_delegate respondsToSelector:
@selector(objectIsReadyForWriting:)])
[_delegate objectIsReadyForWriting:
_FDToObject[eventList[i].ident]];
break;
default:
assert(0);
}
objc_autoreleasePoolPop(pool);
realEvents++;
}
if (realEvents == 0)
return false;
return true;
}
@end
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