1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2007 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
15 #include "exitcodes.h"
16 #include <sys/types.h>
17 #include <sys/event.h>
19 #include "socketengine_kqueue.h"
22 KQueueEngine::KQueueEngine(InspIRCd* Instance) : SocketEngine(Instance)
24 this->RecoverFromFork();
27 void KQueueEngine::RecoverFromFork()
30 * The only bad thing about kqueue is that its fd cant survive a fork and is not inherited.
34 EngineHandle = kqueue();
35 if (EngineHandle == -1)
37 ServerInstance->Log(SPARSE,"ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
38 ServerInstance->Log(SPARSE,"ERROR: this is a fatal error, exiting now.");
39 printf("ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
40 printf("ERROR: this is a fatal error, exiting now.");
41 ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
46 KQueueEngine::~KQueueEngine()
48 this->Close(EngineHandle);
51 bool KQueueEngine::AddFd(EventHandler* eh)
55 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
58 if (GetRemainingFds() <= 1)
67 EV_SET(&ke, fd, eh->Readable() ? EVFILT_READ : EVFILT_WRITE, EV_ADD, 0, 0, NULL);
69 int i = kevent(EngineHandle, &ke, 1, 0, 0, NULL);
75 ServerInstance->Log(DEBUG,"New file descriptor: %d", fd);
79 bool KQueueEngine::DelFd(EventHandler* eh, bool force)
83 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
87 EV_SET(&ke, eh->GetFd(), EVFILT_READ, EV_DELETE, 0, 0, NULL);
89 int i = kevent(EngineHandle, &ke, 1, 0, 0, NULL);
91 EV_SET(&ke, eh->GetFd(), EVFILT_WRITE, EV_DELETE, 0, 0, NULL);
93 int j = kevent(EngineHandle, &ke, 1, 0, 0, NULL);
95 if ((j < 0) && (i < 0) && !force)
101 ServerInstance->Log(DEBUG,"Remove file descriptor: %d", fd);
105 void KQueueEngine::WantWrite(EventHandler* eh)
107 /** When changing an item in a kqueue, there is no 'modify' call
108 * as in epoll. Instead, we add the item again, and this overwrites
109 * the original setting rather than adding it twice. See man kqueue.
112 EV_SET(&ke, eh->GetFd(), EVFILT_WRITE, EV_ADD | EV_ONESHOT, 0, 0, NULL);
113 kevent(EngineHandle, &ke, 1, 0, 0, NULL);
116 int KQueueEngine::GetMaxFds()
118 return MAX_DESCRIPTORS;
121 int KQueueEngine::GetRemainingFds()
123 return MAX_DESCRIPTORS - CurrentSetSize;
126 int KQueueEngine::DispatchEvents()
130 int i = kevent(EngineHandle, NULL, 0, &ke_list[0], MAX_DESCRIPTORS, &ts);
131 for (int j = 0; j < i; j++)
133 if (ke_list[j].flags & EV_EOF)
135 /* We love you kqueue, oh yes we do *sings*!
136 * kqueue gives us the error number directly in the EOF state!
137 * Unlike smelly epoll and select, where we have to getsockopt
138 * to get the error, this saves us time and cpu cycles. Go BSD!
140 if (ref[ke_list[j].ident])
141 ref[ke_list[j].ident]->HandleEvent(EVENT_ERROR, ke_list[j].fflags);
144 if (ke_list[j].flags & EVFILT_WRITE)
146 /* This looks wrong but its right. As above, theres no modify
147 * call in kqueue. See the manpage.
150 EV_SET(&ke, ke_list[j].ident, EVFILT_READ, EV_ADD, 0, 0, NULL);
151 kevent(EngineHandle, &ke, 1, 0, 0, NULL);
152 if (ref[ke_list[j].ident])
153 ref[ke_list[j].ident]->HandleEvent(EVENT_WRITE);
157 if (ref[ke_list[j].ident])
158 ref[ke_list[j].ident]->HandleEvent(EVENT_READ);
165 std::string KQueueEngine::GetName()