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#include <sys/epoll.h>
#import "OFKernelEventObserver.h"
#import "OFKernelEventObserver+Private.h"
#import "OFKernelEventObserver_epoll.h"
#import "OFMapTable.h"
#import "OFInitializationFailedException.h"
#import "OFObserveFailedException.h"
#define EVENTLIST_SIZE 64
static const of_map_table_functions_t mapFunctions = { NULL };
@implementation OFKernelEventObserver_epoll
- init
{
self = [super init];
@try {
#ifdef HAVE_EPOLL_CREATE1
if ((_epfd = epoll_create1(EPOLL_CLOEXEC)) == -1)
@throw [OFInitializationFailedException exception];
#else
int flags;
if ((_epfd = epoll_create(1)) == -1)
@throw [OFInitializationFailedException exception];
if ((flags = fcntl(_epfd, F_GETFD, 0)) != -1)
fcntl(_epfd, F_SETFD, flags | FD_CLOEXEC);
#endif
_FDToEvents = [[OFMapTable alloc]
initWithKeyFunctions: mapFunctions
valueFunctions: mapFunctions];
[self OF_addFileDescriptorForReading: _cancelFD[0]];
- (void)OF_addFileDescriptor: (int)fd
forEvents: (int)addEvents
{
intptr_t events;
events = (intptr_t)[_FDToEvents valueForKey: (void*)(intptr_t)fd];
if (events == 0) {
struct epoll_event event;
memset(&event, 0, sizeof(event));
event.events = addEvents;
event.data.fd = fd;
if (epoll_ctl(_epfd, EPOLL_CTL_ADD, fd, &event) == -1)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
[_FDToEvents setValue: (void*)(intptr_t)addEvents
forKey: (void*)(intptr_t)fd];
} else {
struct epoll_event event;
memset(&event, 0, sizeof(event));
event.events = (int)events | addEvents;
event.data.fd = fd;
if (epoll_ctl(_epfd, EPOLL_CTL_MOD, fd, &event) == -1)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
[_FDToEvents setValue: (void*)(events | addEvents)
forKey: (void*)(intptr_t)fd];
}
}
- (void)OF_removeFileDescriptor: (int)fd
forEvents: (int)removeEvents
event.data.fd = fd;
if (epoll_ctl(_epfd, EPOLL_CTL_MOD, fd, &event) == -1)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
[_FDToEvents setValue: (void*)events
forKey: (void*)(intptr_t)fd];
}
}
- (void)OF_addFileDescriptorForReading: (int)fd
{
[self OF_addFileDescriptor: fd
forEvents: EPOLLIN];
}
- (void)OF_addFileDescriptorForWriting: (int)fd
{
[self OF_addFileDescriptor: fd
forEvents: EPOLLOUT];
}
- (void)OF_removeFileDescriptorForReading: (int)fd
{
[self OF_removeFileDescriptor: fd
forEvents: EPOLLIN];
- (void)OF_removeFileDescriptorForWriting: (int)fd
{
[self OF_removeFileDescriptor: fd
forEvents: EPOLLOUT];
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#include <sys/epoll.h>
#import "OFKernelEventObserver.h"
#import "OFKernelEventObserver+Private.h"
#import "OFKernelEventObserver_epoll.h"
#import "OFMapTable.h"
#import "OFNull.h"
#import "OFInitializationFailedException.h"
#import "OFObserveFailedException.h"
#define EVENTLIST_SIZE 64
static const of_map_table_functions_t mapFunctions = { NULL };
@implementation OFKernelEventObserver_epoll
- init
{
self = [super init];
@try {
struct epoll_event event;
#ifdef HAVE_EPOLL_CREATE1
if ((_epfd = epoll_create1(EPOLL_CLOEXEC)) == -1)
@throw [OFInitializationFailedException exception];
#else
int flags;
if ((_epfd = epoll_create(1)) == -1)
@throw [OFInitializationFailedException exception];
if ((flags = fcntl(_epfd, F_GETFD, 0)) != -1)
fcntl(_epfd, F_SETFD, flags | FD_CLOEXEC);
#endif
_FDToEvents = [[OFMapTable alloc]
initWithKeyFunctions: mapFunctions
valueFunctions: mapFunctions];
memset(&event, 0, sizeof(event));
event.events = EPOLLIN;
event.data.ptr = [OFNull null];
if (epoll_ctl(_epfd, EPOLL_CTL_ADD, _cancelFD[0], &event) == -1)
@throw [OFInitializationFailedException exception];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
close(_epfd);
[_FDToEvents release];
[super dealloc];
}
- (void)OF_addObject: (id)object
fileDescriptor: (int)fd
events: (int)addEvents
{
intptr_t events;
events = (intptr_t)[_FDToEvents valueForKey: (void*)(intptr_t)fd];
if (events == 0) {
struct epoll_event event;
memset(&event, 0, sizeof(event));
event.events = addEvents;
event.data.ptr = object;
if (epoll_ctl(_epfd, EPOLL_CTL_ADD, fd, &event) == -1)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
[_FDToEvents setValue: (void*)(intptr_t)addEvents
forKey: (void*)(intptr_t)fd];
} else {
struct epoll_event event;
memset(&event, 0, sizeof(event));
event.events = (int)events | addEvents;
event.data.ptr = object;
if (epoll_ctl(_epfd, EPOLL_CTL_MOD, fd, &event) == -1)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
[_FDToEvents setValue: (void*)(events | addEvents)
forKey: (void*)(intptr_t)fd];
}
}
- (void)OF_removeObject: (id)object
fileDescriptor: (int)fd
events: (int)removeEvents
{
intptr_t events;
events = (intptr_t)[_FDToEvents valueForKey: (void*)(intptr_t)fd];
events &= ~removeEvents;
if (events == 0) {
if (epoll_ctl(_epfd, EPOLL_CTL_DEL, fd, NULL) == -1)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
[_FDToEvents removeValueForKey: (void*)(intptr_t)fd];
} else {
struct epoll_event event;
memset(&event, 0, sizeof(event));
event.events = (int)events;
event.data.ptr = object;
if (epoll_ctl(_epfd, EPOLL_CTL_MOD, fd, &event) == -1)
@throw [OFObserveFailedException
exceptionWithObserver: self
errNo: errno];
[_FDToEvents setValue: (void*)events
forKey: (void*)(intptr_t)fd];
}
}
- (void)OF_addObjectForReading: (id)object
{
[self OF_addObject: object
fileDescriptor: [object fileDescriptorForReading]
events: EPOLLIN];
}
- (void)OF_addObjectForWriting: (id)object
{
[self OF_addObject: object
fileDescriptor: [object fileDescriptorForWriting]
events: EPOLLOUT];
}
- (void)OF_removeObjectForReading: (id)object
{
[self OF_removeObject: object
fileDescriptor: [object fileDescriptorForReading]
events: EPOLLIN];
}
- (void)OF_removeObjectForWriting: (id)object
{
[self OF_removeObject: object
fileDescriptor: [object fileDescriptorForWriting]
events: EPOLLOUT];
}
- (bool)observeForTimeInterval: (of_time_interval_t)timeInterval
{
OFNull *nullObject = [OFNull null];
void *pool = objc_autoreleasePoolPush();
struct epoll_event eventList[EVENTLIST_SIZE];
int i, events, realEvents = 0;
[self OF_processQueueAndStoreRemovedIn: nil];
if ([self OF_processReadBuffers]) {
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return [OFObserveFailedException exceptionWithObserver: self
errNo: errno];
if (events == 0)
return false;
for (i = 0; i < events; i++) {
if (eventList[i].data.fd == _cancelFD[0]) {
char buffer;
assert(eventList[i].events == EPOLLIN);
OF_ENSURE(read(_cancelFD[0], &buffer, 1) == 1);
continue;
}
if (eventList[i].events & EPOLLIN) {
pool = objc_autoreleasePoolPush();
if ([_delegate respondsToSelector:
@selector(objectIsReadyForReading:)])
[_delegate objectIsReadyForReading:
_FDToObject[eventList[i].data.fd]];
realEvents++;
objc_autoreleasePoolPop(pool);
}
if (eventList[i].events & EPOLLOUT) {
pool = objc_autoreleasePoolPush();
if ([_delegate respondsToSelector:
@selector(objectIsReadyForWriting:)])
[_delegate objectIsReadyForWriting:
_FDToObject[eventList[i].data.fd]];
realEvents++;
objc_autoreleasePoolPop(pool);
}
assert((eventList[i].events & ~(EPOLLIN | EPOLLOUT)) == 0);
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return [OFObserveFailedException exceptionWithObserver: self
errNo: errno];
if (events == 0)
return false;
for (i = 0; i < events; i++) {
if (eventList[i].data.ptr == nullObject) {
char buffer;
assert(eventList[i].events == EPOLLIN);
OF_ENSURE(read(_cancelFD[0], &buffer, 1) == 1);
continue;
}
if (eventList[i].events & EPOLLIN) {
pool = objc_autoreleasePoolPush();
if ([_delegate respondsToSelector:
@selector(objectIsReadyForReading:)])
[_delegate objectIsReadyForReading:
eventList[i].data.ptr];
realEvents++;
objc_autoreleasePoolPop(pool);
}
if (eventList[i].events & EPOLLOUT) {
pool = objc_autoreleasePoolPush();
if ([_delegate respondsToSelector:
@selector(objectIsReadyForWriting:)])
[_delegate objectIsReadyForWriting:
eventList[i].data.ptr];
realEvents++;
objc_autoreleasePoolPop(pool);
}
assert((eventList[i].events & ~(EPOLLIN | EPOLLOUT)) == 0);
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