From 3a6885d6a1d30f6e2eb9b1fcd20e949768267318 Mon Sep 17 00:00:00 2001
From: brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Wed, 19 Jul 2006 12:51:21 +0000
Subject: * Seperate out socket engines into derived classes of SocketEngine. *
 Add a classfactory SocketEngineFactory to create a new socketengine of the
 configured type * Implement configure hax to compile only the required
 socketengine and the base class * Eliminates ugly defines, and is more in
 line with C++ ways

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@4439 e03df62e-2008-0410-955e-edbf42e46eb7
---
 src/socketengine_kqueue.cpp | 130 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 src/socketengine_kqueue.cpp

(limited to 'src/socketengine_kqueue.cpp')

diff --git a/src/socketengine_kqueue.cpp b/src/socketengine_kqueue.cpp
new file mode 100644
index 000000000..388a84f29
--- /dev/null
+++ b/src/socketengine_kqueue.cpp
@@ -0,0 +1,130 @@
+/*       +------------------------------------+
+ *       | Inspire Internet Relay Chat Daemon |
+ *       +------------------------------------+
+ *
+ *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
+ *                       E-mail:
+ *                <brain@chatspike.net>
+ *                <Craig@chatspike.net>
+ *
+ * Written by Craig Edwards, Craig McLure, and others.
+ * This program is free but copyrighted software; see
+ *            the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "inspircd_config.h"
+#include "globals.h"
+#include "inspircd.h"
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/time.h>
+#include <vector>
+#include <string>
+#include "socketengine_kqueue.h"
+#include "helperfuncs.h"
+
+KQueueEngine::KQueueEngine()
+{
+	EngineHandle = kqueue();
+	if (EngineHandle == -1)
+	{
+		log(SPARSE,"ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
+		log(SPARSE,"ERROR: this is a fatal error, exiting now.");
+		printf("ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
+		printf("ERROR: this is a fatal error, exiting now.");
+		Exit(0);
+	}
+	CurrentSetSize = 0;
+}
+
+KQueueEngine::~KQueueEngine()
+{
+	log(DEBUG,"KQueueEngine::~KQueueEngine()");
+	close(EngineHandle);
+}
+
+bool KQueueEngine::AddFd(int fd, bool readable, char type)
+{
+	if ((fd < 0) || (fd > MAX_DESCRIPTORS))
+	{
+		log(DEFAULT,"ERROR: FD of %d added above max of %d",fd,MAX_DESCRIPTORS);
+		return false;
+	}
+	if (GetRemainingFds() <= 1)
+	{
+		log(DEFAULT,"ERROR: System out of file descriptors!");
+		return false;
+	}
+
+	ref[fd] = type;
+	if (readable)
+	{
+		log(DEBUG,"Set readbit");
+		ref[fd] |= X_READBIT;
+	}
+	log(DEBUG,"Add socket %d",fd);
+
+	struct kevent ke;
+	log(DEBUG,"kqueue: Add socket to events, kq=%d socket=%d",EngineHandle,fd);
+	EV_SET(&ke, fd, 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;
+	}
+
+	CurrentSetSize++;
+	return true;
+}
+
+bool KQueueEngine::DelFd(int fd)
+{
+	log(DEBUG,"KQueueEngine::DelFd(%d)",fd);
+
+	if ((fd < 0) || (fd > MAX_DESCRIPTORS))
+		return false;
+
+	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 socket from queue!");
+		return false;
+	}
+
+	CurrentSetSize--;
+	ref[fd] = 0;
+	return true;
+}
+
+int KQueueEngine::GetMaxFds()
+{
+	return MAX_DESCRIPTORS;
+}
+
+int KQueueEngine::GetRemainingFds()
+{
+	return MAX_DESCRIPTORS - CurrentSetSize;
+}
+
+int KQueueEngine::Wait(int* fdlist)
+{
+	int result = 0;
+
+	ts.tv_nsec = 5000L;
+	ts.tv_sec = 0;
+	int i = kevent(EngineHandle, NULL, 0, &ke_list[0], MAX_DESCRIPTORS, &ts);
+	for (int j = 0; j < i; j++)
+		fdlist[result++] = ke_list[j].ident;
+
+	return result;
+}
+
+std::string KQueueEngine::GetName()
+{
+	return "kqueue";
+}
-- 
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