From 85f9d57f0f172c0db12d037ac018d7ff33a64975 Mon Sep 17 00:00:00 2001
From: brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Tue, 7 Mar 2006 18:00:45 +0000
Subject: [PATCH] Tweaks to socket engine, faster buffer flush and hopefully
 more stable

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@3521 e03df62e-2008-0410-955e-edbf42e46eb7
---
 include/socket.h     |  3 ++-
 src/socket.cpp       | 35 +++++++++++++----------------------
 src/socketengine.cpp |  6 +++---
 3 files changed, 18 insertions(+), 26 deletions(-)

diff --git a/include/socket.h b/include/socket.h
index 861d4be79..584c37b93 100644
--- a/include/socket.h
+++ b/include/socket.h
@@ -23,6 +23,7 @@
 #include <sstream>
 #include <string>
 #include "dns.h"
+#include <deque>
 
 /**
  * States which a socket may be in
@@ -114,7 +115,7 @@ private:
 	/**
 	 * The output buffer for this socket
 	 */
-	std::string Buffer;
+	std::deque<std::string> outbuffer;
 
 	/**
 	 * The IP address being connected
diff --git a/src/socket.cpp b/src/socket.cpp
index 6ea91a83f..923ca5848 100644
--- a/src/socket.cpp
+++ b/src/socket.cpp
@@ -63,7 +63,7 @@ InspSocket::InspSocket(std::string ahost, int aport, bool listening, unsigned lo
 {
 	this->fd = -1;
 	this->host = ahost;
-	this->Buffer = "";
+	this->outbuffer.clear();
 	if (listening) {
 		if ((this->fd = OpenTCPSocket()) == ERROR)
 		{
@@ -244,40 +244,31 @@ char* InspSocket::Read()
 // and should be aborted.
 int InspSocket::Write(std::string data)
 {
-	try
-	{
-		if ((data != "") && (this->Buffer.length() + data.length() < this->Buffer.max_size()))
-			this->Buffer.append(data);
-	}
-	catch (std::length_error)
-	{
-		log(DEBUG,"std::length_error exception caught while appending to socket buffer!");
-		return 0;
-	}
-	return data.length();
+	/* Try and append the data to the back of the queue, and send it on its way
+	 */
+	outbuffer.push_back(data);
+	return (!this->FlushWriteBuffer());
 }
 
 bool InspSocket::FlushWriteBuffer()
 {
 	if ((this->fd > -1) && (this->state == I_CONNECTED))
 	{
-		int result = 0, v = 0;
-		const char* n = Buffer.c_str();
-		v = Buffer.length();
-		if (v > 0)
+		if (outbuffer.size())
 		{
-			result = write(this->fd,n,v);
+			int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
 			if (result > 0)
 			{
-				if (result == v)
+				if ((unsigned int)result == outbuffer[0].length())
 				{
-					Buffer = "";
+					/* The whole block was written (usually a line)
+					 * Pop the block off the front of the queue
+					 */
+					outbuffer.pop_front();
 				}
 				else
 				{
-					/* If we wrote some, advance the buffer forwards */
-					n += result;
-					Buffer = n;
+					outbuffer[0] = outbuffer[0].substr(result + 1,outbuffer[0].length());
 				}
 			}
 			else if ((result == -1) && (errno != EAGAIN))
diff --git a/src/socketengine.cpp b/src/socketengine.cpp
index cec51c5d3..3df9c2135 100644
--- a/src/socketengine.cpp
+++ b/src/socketengine.cpp
@@ -201,7 +201,7 @@ int SocketEngine::Wait(int* fdlist)
 		
 	}
 	tval.tv_sec = 0;
-	tval.tv_usec = 100L;
+	tval.tv_usec = 50L;
 	sresult = select(FD_SETSIZE, &rfdset, &wfdset, NULL, &tval);
 	if (sresult > 0)
 	{
@@ -213,14 +213,14 @@ int SocketEngine::Wait(int* fdlist)
 	}
 #endif
 #ifdef USE_KQUEUE
-	ts.tv_nsec = 10000L;
+	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;
 #endif
 #ifdef USE_EPOLL
-	int i = epoll_wait(EngineHandle, events, MAX_DESCRIPTORS, 100);
+	int i = epoll_wait(EngineHandle, events, MAX_DESCRIPTORS, 50);
 	for (int j = 0; j < i; j++)
 		fdlist[result++] = events[j].data.fd;
 #endif
-- 
2.39.5