From b06dcb45c0fee81f7edd330874c24d08b8f38426 Mon Sep 17 00:00:00 2001
From: Shyotl <Shyotl@gmail.com>
Date: Tue, 15 Mar 2011 01:15:43 -0500
Subject: [PATCH] Applying recent commits from Snowstorm

---
 indra/newview/llappviewer.cpp        |  2 +-
 indra/newview/lltexturecache.cpp     | 17 ++++++++---------
 indra/newview/llviewerobjectlist.cpp | 11 ++++++-----
 indra/newview/llvocache.cpp          |  5 ++++-
 4 files changed, 19 insertions(+), 16 deletions(-)

diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index b9d320454..f8e30b4b1 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -1407,8 +1407,8 @@ bool LLAppViewer::cleanup()
 	
 	// Delete workers first
 	// shotdown all worker threads before deleting them in case of co-dependencies
-	sTextureCache->shutdown();
 	sTextureFetch->shutdown();
+	sTextureCache->shutdown();
 	sImageDecodeThread->shutdown();
 	sTextureFetch->shutDownTextureCacheThread();
 	sTextureFetch->shutDownImageDecodeThread();
diff --git a/indra/newview/lltexturecache.cpp b/indra/newview/lltexturecache.cpp
index 8ccd47066..8873821ef 100644
--- a/indra/newview/lltexturecache.cpp
+++ b/indra/newview/lltexturecache.cpp
@@ -1420,22 +1420,21 @@ void LLTextureCache::readHeaderCache()
 					}
 				}
 			}
-			if (num_entries > sCacheMaxEntries)
+			if (num_entries - empty_entries > sCacheMaxEntries)
 			{
 				// Special case: cache size was reduced, need to remove entries
 				// Note: After we prune entries, we will call this again and create the LRU
 				U32 entries_to_purge = (num_entries-empty_entries) - sCacheMaxEntries;
 				llinfos << "Texture Cache Entries: " << num_entries << " Max: " << sCacheMaxEntries << " Empty: " << empty_entries << " Purging: " << entries_to_purge << llendl;
-				if (entries_to_purge > 0)
+				// We can exit the following loop with the given condition, since if we'd reach the end of the lru set we'd have:
+				// purge_list.size() = lru.size() = num_entries - empty_entries = entries_to_purge + sCacheMaxEntries >= entries_to_purge
+				// So, it's certain that iter will never reach lru.end() first.
+				std::set<lru_data_t>::iterator iter = lru.begin();
+				while (purge_list.size() < entries_to_purge)
 				{
-					for (std::set<lru_data_t>::iterator iter = lru.begin(); iter != lru.end(); ++iter)
-					{
-						purge_list.insert(iter->second);
-						if (purge_list.size() >= entries_to_purge)
-							break;
-					}
+					purge_list.insert(iter->second);
+					++iter;
 				}
-				llassert_always(purge_list.size() >= entries_to_purge);
 			}
 			else
 			{
diff --git a/indra/newview/llviewerobjectlist.cpp b/indra/newview/llviewerobjectlist.cpp
index dd37136a8..4f50fec6e 100644
--- a/indra/newview/llviewerobjectlist.cpp
+++ b/indra/newview/llviewerobjectlist.cpp
@@ -845,13 +845,14 @@ void LLViewerObjectList::clearDebugText()
 void LLViewerObjectList::cleanupReferences(LLViewerObject *objectp)
 {
 	LLMemType mt(LLMemType::MTYPE_OBJECT);
-	if (mDeadObjects.count(objectp->mID))
+	if (mDeadObjects.find(objectp->mID) != mDeadObjects.end())
 	{
 		llinfos << "Object " << objectp->mID << " already on dead list, ignoring cleanup!" << llendl;	
-		return;
 	}
-
-	mDeadObjects.insert(std::pair<LLUUID, LLPointer<LLViewerObject> >(objectp->mID, objectp));
+	else
+	{
+		mDeadObjects.insert(std::pair<LLUUID, LLPointer<LLViewerObject> >(objectp->mID, objectp));
+	}
 
 	// Cleanup any references we have to this object
 	// Remove from object map so noone can look it up.
@@ -1100,7 +1101,7 @@ void LLViewerObjectList::renderObjectsForMap(LLNetMap &netmap)
 	for (S32 i = 0; i < mMapObjects.count(); i++)
 	{
 		LLViewerObject* objectp = mMapObjects[i];
-		if (!objectp->getRegion() || objectp->isOrphaned() || objectp->isAttachment())
+		if (objectp->isDead() || !objectp->getRegion() || objectp->isOrphaned() || objectp->isAttachment())
 		{
 			continue;
 		}
diff --git a/indra/newview/llvocache.cpp b/indra/newview/llvocache.cpp
index 3f1c132e7..4f4330b17 100644
--- a/indra/newview/llvocache.cpp
+++ b/indra/newview/llvocache.cpp
@@ -104,7 +104,10 @@ LLVOCacheEntry::LLVOCacheEntry(LLFILE *fp)
 
 LLVOCacheEntry::~LLVOCacheEntry()
 {
-	delete [] mBuffer;
+	if(mBuffer)
+	{
+		delete [] mBuffer;
+	}
 }