From 1310630ac60ba292f52761e795eaa55610818b9b Mon Sep 17 00:00:00 2001
From: Monty Brandenberg <monty@lindenlab.com>
Date: Fri, 12 Apr 2013 20:11:17 +0000
Subject: SH-4090 [WIP] Basic deadman timer integration started on Linux. 
 Moving to windows to do real work.

---
 indra/newview/llmeshrepository.cpp | 45 ++++++++++++++++++++++++++++++++++++--
 indra/newview/llmeshrepository.h   | 11 ++++++++--
 2 files changed, 52 insertions(+), 4 deletions(-)

diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index 1223615079..11c5780a30 100755
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -37,6 +37,7 @@
 #include "llcallbacklist.h"
 #include "llcurl.h"
 #include "lldatapacker.h"
+#include "lldeadmantimer.h"
 #include "llfloatermodelpreview.h"
 #include "llfloaterperms.h"
 #include "lleconomy.h"
@@ -94,8 +95,9 @@ U32 LLMeshRepository::sLODPending = 0;
 U32 LLMeshRepository::sCacheBytesRead = 0;
 U32 LLMeshRepository::sCacheBytesWritten = 0;
 U32 LLMeshRepository::sPeakKbps = 0;
-	
+LLDeadmanTimer LLMeshRepository::sQuiescentTimer(15.0);
 
+	
 const U32 MAX_TEXTURE_UPLOAD_RETRIES = 5;
 
 static S32 dump_num = 0;
@@ -115,7 +117,6 @@ std::string header_lod[] =
 	"high_lod"
 };
 
-
 //get the number of bytes resident in memory for given volume
 U32 get_volume_memory_size(const LLVolume* volume)
 {
@@ -2678,6 +2679,9 @@ void LLMeshRepository::notifyDecompositionReceived(LLModel::Decomposition* decom
 
 void LLMeshRepository::notifyMeshLoaded(const LLVolumeParams& mesh_params, LLVolume* volume)
 { //called from main thread
+	// Manage time-to-load metrics for mesh download operations.
+	metricsCheck();
+	
 	S32 detail = LLVolumeLODGroup::getVolumeDetailFromScale(volume->getDetail());
 
 	//get list of objects waiting to be notified this mesh is loaded
@@ -3699,3 +3703,40 @@ bool LLMeshRepository::meshRezEnabled()
 	}
 	return false;
 }
+
+void LLMeshRepository::metricsStart()
+{
+	sQuiescentTimer.start();
+}
+
+void LLMeshRepository::metricsStop()
+{
+	sQuiescentTimer.stop();
+}
+
+void LLMeshRepository::metricsCheck()
+{
+	static bool first_start(true);
+	F64 started, stopped;
+	U64 count;
+
+	if (first_start)
+	{
+		// Let the first request start the timing cycle for login.
+		metricsStart();
+		first_start = false;
+	}
+	sQuiescentTimer.ringBell();
+	if (sQuiescentTimer.isExpired(started, stopped, count))
+	{
+		LLSD metrics;
+
+		metrics["reason"] = "Mesh download quiescent";
+		metrics["scope"] = "Login";
+		metrics["start"] = started;
+		metrics["stop"] = stopped;
+		metrics["downloads"] = LLSD::Integer(count);
+		llinfos << "MetricsMarker" << metrics << llendl;
+	}
+}
+	
diff --git a/indra/newview/llmeshrepository.h b/indra/newview/llmeshrepository.h
index 8602271f84..f08feedf81 100644
--- a/indra/newview/llmeshrepository.h
+++ b/indra/newview/llmeshrepository.h
@@ -32,6 +32,7 @@
 #include "lluuid.h"
 #include "llviewertexture.h"
 #include "llvolume.h"
+#include "lldeadmantimer.h"
 
 #define LLCONVEXDECOMPINTER_STATIC 1
 
@@ -455,14 +456,15 @@ public:
 	static U32 sCacheBytesRead;
 	static U32 sCacheBytesWritten;
 	static U32 sPeakKbps;
-	
+	static LLDeadmanTimer sQuiescentTimer;  // time-to-complete-mesh-downloads after significant events
+
 	static F32 getStreamingCost(LLSD& header, F32 radius, S32* bytes = NULL, S32* visible_bytes = NULL, S32 detail = -1, F32 *unscaled_value = NULL);
 
 	LLMeshRepository();
 
 	void init();
 	void shutdown();
-	S32 update() ;
+	S32 update();
 
 	//mesh management functions
 	S32 loadMesh(LLVOVolume* volume, const LLVolumeParams& mesh_params, S32 detail = 0, S32 last_lod = -1);
@@ -495,6 +497,11 @@ public:
 
 	S32 getMeshSize(const LLUUID& mesh_id, S32 lod);
 
+	// Quiescent timer management, main thread only.
+	static void metricsStart();
+	static void metricsStop();
+	static void metricsCheck();
+	
 	typedef std::map<LLVolumeParams, std::set<LLUUID> > mesh_load_map;
 	mesh_load_map mLoadingMeshes[4];
 	
-- 
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