* 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

1 files changed, 131 insertions, 0 deletions

diff --git a/src/socketengine_select.cpp b/src/socketengine_select.cpp
new file mode 100644
index 000000000..8d77da461
--- /dev/null
+++ b/src/socketengine_select.cpp
@@ -0,0 +1,131 @@
+/*       +------------------------------------+
+ *       | 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 <vector>
+#include <string>
+#include "socketengine_select.h"
+#include "helperfuncs.h"
+
+SelectEngine::SelectEngine()
+{
+	log(DEBUG,"SelectEngine::SelectEngine()");
+	EngineHandle = 0;
+	CurrentSetSize = 0;
+}
+
+SelectEngine::~SelectEngine()
+{
+	log(DEBUG,"SelectEngine::~SelectEngine()");
+}
+
+bool SelectEngine::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;
+	}
+
+	fds[fd] = fd;
+
+	ref[fd] = type;
+	if (readable)
+	{
+		log(DEBUG,"Set readbit");
+		ref[fd] |= X_READBIT;
+	}
+	log(DEBUG,"Add socket %d",fd);
+
+	CurrentSetSize++;
+	return true;
+}
+
+bool SelectEngine::DelFd(int fd)
+{
+	log(DEBUG,"SelectEngine::DelFd(%d)",fd);
+
+	if ((fd < 0) || (fd > MAX_DESCRIPTORS))
+		return false;
+
+	std::map<int,int>::iterator t = fds.find(fd);
+	if (t != fds.end())
+	{
+		fds.erase(t);
+		log(DEBUG,"Deleted fd %d",fd);
+	}
+
+	CurrentSetSize--;
+	ref[fd] = 0;
+	return true;
+}
+
+int SelectEngine::GetMaxFds()
+{
+	return FD_SETSIZE;
+}
+
+int SelectEngine::GetRemainingFds()
+{
+	return FD_SETSIZE - CurrentSetSize;
+}
+
+int SelectEngine::Wait(int* fdlist)
+{
+	int result = 0;
+
+	FD_ZERO(&wfdset);
+	FD_ZERO(&rfdset);
+	timeval tval;
+	int sresult;
+	for (std::map<int,int>::iterator a = fds.begin(); a != fds.end(); a++)
+	{
+		if (ref[a->second] & X_READBIT)
+		{
+			FD_SET (a->second, &rfdset);
+		}
+		else
+		{
+			FD_SET (a->second, &wfdset);
+		}
+		
+	}
+	tval.tv_sec = 0;
+	tval.tv_usec = 50L;
+	sresult = select(FD_SETSIZE, &rfdset, &wfdset, NULL, &tval);
+	if (sresult > 0)
+	{
+		for (std::map<int,int>::iterator a = fds.begin(); a != fds.end(); a++)
+		{
+			if ((FD_ISSET (a->second, &rfdset)) || (FD_ISSET (a->second, &wfdset)))
+				fdlist[result++] = a->second;
+		}
+	}
+
+	return result;
+}
+
+std::string SelectEngine::GetName()
+{
+	return "select";
+}