Added preliminary socketengine stuff

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@2321 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 157 insertions, 0 deletions

diff --git a/src/socketengine.cpp b/src/socketengine.cpp
new file mode 100644
index 000000000..d6255e9e3
--- /dev/null
+++ b/src/socketengine.cpp
@@ -0,0 +1,157 @@
+#ifdef USE_EPOLL
+#include <sys/epoll.h>
+#define EP_DELAY 5
+#endif
+#ifdef USE_KQUEUE
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/time.h>
+#endif
+
+
+char ref[65535];
+
+const char X_LISTEN		= 0;
+const char X_ESTAB_CLIENT	= 1;
+const char X_ESTAB_MODULE	= 2;
+const char X_ESTAB_DNS		= 3;
+
+const char X_READBIT		= 0x80;
+
+SocketEngine::SocketEngine()
+{
+#ifdef USE_EPOLL
+	EngineHandle = epoll_create(65535);
+#endif
+#ifdef USE_KQUEUE
+	EngineHandle = kqueue();
+#endif
+}
+
+SocketEngine::~SocketEngine()
+{
+#ifdef USE_EPOLL || USE_KQUEUE
+	close(EngineHandle);
+#endif
+}
+
+bool SocketEngine::AddFd(int fd, bool readable, char type)
+{
+	this->fds.push_back(fd);
+	if (readable)
+		ref[fd] |= X_READBIT;
+#ifdef USE_EPOLL
+	struct epoll_event ev;
+	log(DEBUG,"epoll: Adduser to events, ep=%d socket=%d",EngineHandle,fd);
+	readable ? ev.events = EPOLLIN | EPOLLET : ev.events = EPOLLOUT | EPOLLET;
+	ev.data.fd = fd;
+	int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev);
+	if (i < 0)
+	{
+		log(DEBUG,"epoll: List insertion failure!");
+		return false;
+	}
+#endif
+#ifdef USE_KQUEUE
+	struct kevent ke;
+	log(DEBUG,"kqueue: Add user to events, kq=%d socket=%d",EngineHandle,fd);
+	EV_SET(&ke, socket, readable ? EVFILT_READ : EVFILT_WRITE, EV_ADD, 0, 0, NULL);
+	int i = kevent(EngineHandle, &ke, 1, 0, 0, NULL);
+	if (i == -1)
+	{
+		log(DEBUG,"kqueue: List insertion failure!");
+		return false;
+	}
+#endif
+return true;
+}
+
+bool SocketEngine::DelFd(int fd)
+{
+	std::vector<int>::iterator i = this->fds.find(fd);
+	if (i != this->fds.end())
+		this->fds.erase(i);
+#ifdef USE_KQUEUE
+	struct kevent ke;
+	EV_SET(&ke, fd, ref[fd] && X_READBIT ? EVFILT_READ : EVFILT_WRITE, EV_DELETE, 0, 0, NULL);
+	int i = kevent(EngineHandle, &ke, 1, 0, 0, NULL);
+	if (i == -1)
+	{
+		log(DEBUG,"kqueue: Failed to remove user from queue!");
+		return false;
+	}
+#endif
+#ifdef USE_EPOLL
+	struct epoll_event ev;
+	ref[fd] && X_READBIT ? ev.events = EPOLLIN | EPOLLET : ev.events = EPOLLOUT | EPOLLET;
+	ev.data.fd = fd;
+	int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev);
+	if (i < 0)
+	{
+		log(DEBUG,"epoll: List deletion failure!");
+		return false;
+	}
+#endif
+	ref[fd] = 0;
+	return (i != this->fds.end());
+}
+
+bool SocketEngine::Wait(unsigned long millisecs, std::vector<int> &fdlist)
+{
+	fdlist.clear();
+#ifdef USE_SELECT
+	int highest_fd = 0;
+	timeval tval;
+	int sresult;
+	for (unsigned int a = 0; a < fds.size(); a++)
+	{
+		if (ref[fds[a]] && X_READBIT)
+		{
+			FD_SET (fds[a], &rfdset);
+		}
+		else
+		{
+			FD_SET (fds[a], &wfdset);
+		}
+		
+	}
+	tval.tv_sec = 0;
+	tval.tv_usec = 1000L;
+	sresult = select(FD_SETSIZE, &rfdset, &wfdset, NULL, &tval);
+	if (sresult > 0)
+	{
+		for (unsigned int a = 0; a < fds.size(); a++)
+		{
+			if ((FD_ISSET (fds[a], &rfdset)) || (FD_ISSET (fds[a], &wfdset)))
+				fdlist.push_back(fds[a]);
+		}
+	}
+#endif
+#ifdef USE_KQUEUE
+	ts.tv_nsec = 1000L;
+	ts.tv_sec = 0;
+	int i = kevent(EngineHandle, NULL, 0, &ke_list, 65535, &ts);
+	for (int j = 0; j < i; j++)
+		fdlist.push_back(ke_list[j].ident);
+#endif
+#ifdef USE_EPOLL
+	int i = epoll_wait(EngineHandle, events, 65535, 1);
+	for (int j = 0; j < i; j++)
+		fdlist.push_back(event[0].data.fd);
+#endif
+	return true;
+}
+
+std::string SocketEngine::GetName()
+{
+#ifdef USE_SELECT
+	return "select";
+#endif
+#ifdef USE_KQUEUE
+	return "kqueue";
+#endif
+#ifdef USE_EPOLL
+	return "epoll";
+#endif
+	return "misconfigured";
+}