41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
+
+
-
+
+
-
+
-
+
+
+
+
+
+
+
+
+
+
-
+
-
+
+
+
+
+
+
+
+
+
+
-
+
-
+
+
+
-
+
+
-
+
+
+
-
+
+
|
@implementation OFKernelEventObserver_kqueue
- init
{
self = [super init];
@try {
struct kevent event;
#ifdef HAVE_KQUEUE1
if ((_kernelQueue = kqueue1(O_CLOEXEC)) == -1)
@throw [OFInitializationFailedException
exceptionWithClass: [self class]];
#else
int flags;
if ((_kernelQueue = kqueue()) == -1)
@throw [OFInitializationFailedException
exceptionWithClass: [self class]];
if ((flags = fcntl(_kernelQueue, F_GETFD, 0)) != -1)
fcntl(_kernelQueue, F_SETFD, flags | FD_CLOEXEC);
#endif
_changeList = [[OFDataArray alloc] initWithItemSize:
sizeof(struct kevent)];
_removedArray = [[OFMutableArray alloc] init];
EV_SET(&event, _cancelFD[0], EVFILT_READ, EV_ADD, 0, 0, 0);
[_changeList addItem: &event];
[self OF_addFileDescriptorForReading: _cancelFD[0]];
_removedArray = [[OFMutableArray alloc] init];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
close(_kernelQueue);
[_changeList release];
[_removedArray release];
[super dealloc];
}
- (void)OF_addFileDescriptorForReading: (int)fd
- (void)OF_addObjectForReading: (id)object
{
struct kevent event;
if ([_changeList count] >= INT_MAX)
@throw [OFOutOfRangeException exception];
memset(&event, 0, sizeof(event));
event.ident = [object fileDescriptorForReading];
event.filter = EVFILT_READ;
event.flags = EV_ADD;
#ifndef __NetBSD__
event.udata = object;
#else
event.udata = (intptr_t)object;
#endif
EV_SET(&event, fd, EVFILT_READ, EV_ADD, 0, 0, 0);
[_changeList addItem: &event];
}
- (void)OF_addFileDescriptorForWriting: (int)fd
- (void)OF_addObjectForWriting: (id)object
{
struct kevent event;
if ([_changeList count] >= INT_MAX)
@throw [OFOutOfRangeException exception];
memset(&event, 0, sizeof(event));
event.ident = [object fileDescriptorForWriting];
event.filter = EVFILT_WRITE;
event.flags = EV_ADD;
#ifndef __NetBSD__
event.udata = object;
#else
event.udata = (intptr_t)object;
#endif
EV_SET(&event, fd, EVFILT_WRITE, EV_ADD, 0, 0, 0);
[_changeList addItem: &event];
}
- (void)OF_removeFileDescriptorForReading: (int)fd
- (void)OF_removeObjectForReading: (id)object
{
struct kevent event;
memset(&event, 0, sizeof(event));
event.ident = [object fileDescriptorForReading];
EV_SET(&event, fd, EVFILT_READ, EV_DELETE, 0, 0, 0);
event.filter = EVFILT_READ;
event.flags = EV_DELETE;
[_changeList addItem: &event];
}
- (void)OF_removeFileDescriptorForWriting: (int)fd
- (void)OF_removeObjectForWriting: (id)object
{
struct kevent event;
memset(&event, 0, sizeof(event));
event.ident = [object fileDescriptorForWriting];
EV_SET(&event, fd, EVFILT_WRITE, EV_DELETE, 0, 0, 0);
event.filter = EVFILT_WRITE;
event.flags = EV_DELETE;
[_changeList addItem: &event];
}
- (bool)observeForTimeInterval: (of_time_interval_t)timeInterval
{
void *pool = objc_autoreleasePoolPush();
struct timespec timeout;
|