From e5595431646c5b6f634a5a43b7cdd004e2b03bdb Mon Sep 17 00:00:00 2001
From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Tue, 25 Oct 2011 10:02:57 +0000
Subject: [PATCH] only lock the server mutex if executing commands

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@11472 d7cf8633-e32d-0410-b094-e92efae38249
---
 cl_parse.c | 31 +++++++++++++++++++------------
 cmd.c      | 12 +++++++++++-
 cmd.h      |  2 ++
 host.c     |  4 +---
 4 files changed, 33 insertions(+), 16 deletions(-)

diff --git a/cl_parse.c b/cl_parse.c
index 7ff8ead9..334772d3 100644
--- a/cl_parse.c
+++ b/cl_parse.c
@@ -303,13 +303,12 @@ so the server doesn't disconnect.
 static unsigned char olddata[NET_MAXMESSAGE];
 void CL_KeepaliveMessage (qboolean readmessages)
 {
+	static double lastdirtytime = 0;
 	static qboolean recursive = false;
-	double time;
-	static double nextmsg = -1;
-	static double nextupdate = -1;
-#if 0
-	static double lasttime = -1;
-#endif
+	double dirtytime;
+	double deltatime;
+	static double countdownmsg = 0;
+	static double countdownupdate = 0;
 	sizebuf_t old;
 
 	qboolean thisrecursive;
@@ -317,21 +316,29 @@ void CL_KeepaliveMessage (qboolean readmessages)
 	thisrecursive = recursive;
 	recursive = true;
 
-	time = Sys_DirtyTime();
+	dirtytime = Sys_DirtyTime();
+	deltatime = dirtytime - lastdirtytime;
+	lastdirtytime = dirtytime;
+	if (deltatime <= 0 || deltatime >= 1800.0)
+		return;
+
+	countdownmsg -= deltatime;
+	countdownupdate -= deltatime;
+
 	if(!thisrecursive)
 	{
 		if(cls.state != ca_dedicated)
 		{
-			if(time >= nextupdate || time < nextupdate) // check if time stepped backwards
+			if(countdownupdate <= 0) // check if time stepped backwards
 			{
 				SCR_UpdateLoadingScreenIfShown();
-				nextupdate = time + 2;
+				countdownupdate = 2;
 			}
 		}
 	}
 
 	// no need if server is local and definitely not if this is a demo
-	if (!cls.netcon || cls.protocol == PROTOCOL_QUAKEWORLD || cls.signon >= SIGNONS)
+	if (sv.active || !cls.netcon || cls.protocol == PROTOCOL_QUAKEWORLD || cls.signon >= SIGNONS)
 	{
 		recursive = thisrecursive;
 		return;
@@ -349,11 +356,11 @@ void CL_KeepaliveMessage (qboolean readmessages)
 		memcpy(cl_message.data, olddata, cl_message.cursize);
 	}
 
-	if (cls.netcon && (time >= nextmsg || time < nextmsg)) // check if time stepped backwards
+	if (cls.netcon && countdownmsg <= 0) // check if time stepped backwards
 	{
 		sizebuf_t	msg;
 		unsigned char		buf[4];
-		nextmsg = time + 5;
+		countdownmsg = 5;
 		// write out a nop
 		// LordHavoc: must use unreliable because reliable could kill the sigon message!
 		Con_Print("--> client to server keepalive\n");
diff --git a/cmd.c b/cmd.c
index 8efe3dc9..0a42ca4a 100644
--- a/cmd.c
+++ b/cmd.c
@@ -289,7 +289,6 @@ void Cbuf_Execute (void)
 	// LordHavoc: making sure the tokenizebuffer doesn't get filled up by repeated crashes
 	cmd_tokenizebufferpos = 0;
 
-	Cbuf_Execute_Deferred();
 	while (cmd_text.cursize)
 	{
 // find a \n or ; line break
@@ -378,6 +377,17 @@ void Cbuf_Execute (void)
 	}
 }
 
+void Cbuf_Frame(void)
+{
+	Cbuf_Execute_Deferred();
+	if (cmd_text.cursize)
+	{
+		SV_LockThreadMutex();
+		Cbuf_Execute();
+		SV_UnlockThreadMutex();
+	}
+}
+
 /*
 ==============================================================================
 
diff --git a/cmd.h b/cmd.h
index 826581d1..c8bf80ca 100644
--- a/cmd.h
+++ b/cmd.h
@@ -61,6 +61,8 @@ void Cbuf_InsertText (const char *text);
  * \note Do not call inside a command function!
  */
 void Cbuf_Execute (void);
+/*! Performs deferred commands and runs Cbuf_Execute, called by Host_Main */
+void Cbuf_Frame (void);
 
 //===========================================================================
 
diff --git a/host.c b/host.c
index d316fcc4..85c07db6 100644
--- a/host.c
+++ b/host.c
@@ -755,13 +755,11 @@ void Host_Main(void)
 		// otherwise we execute them on client frames
 		if (sv.active ? sv_timer > 0 : cl_timer > 0)
 		{
-			SV_LockThreadMutex();
 			// process console commands
 //			R_TimeReport("preconsole");
 			CL_VM_PreventInformationLeaks();
-			Cbuf_Execute();
+			Cbuf_Frame();
 //			R_TimeReport("console");
-			SV_UnlockThreadMutex();
 		}
 
 		//Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
-- 
2.39.2