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-rw-r--r--indra/newview/lltexturecache.cpp146
1 files changed, 104 insertions, 42 deletions
diff --git a/indra/newview/lltexturecache.cpp b/indra/newview/lltexturecache.cpp
index 403692951f..6a213309a0 100644
--- a/indra/newview/lltexturecache.cpp
+++ b/indra/newview/lltexturecache.cpp
@@ -2,31 +2,25 @@
* @file lltexturecache.cpp
* @brief Object which handles local texture caching
*
- * $LicenseInfo:firstyear=2000&license=viewergpl$
- *
- * Copyright (c) 2000-2009, Linden Research, Inc.
- *
+ * $LicenseInfo:firstyear=2000&license=viewerlgpl$
* Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * Copyright (C) 2010, Linden Research, Inc.
*
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
*
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
@@ -933,7 +927,7 @@ void LLTextureCache::setReadOnly(BOOL read_only)
}
//called in the main thread.
-S64 LLTextureCache::initCache(ELLPath location, S64 max_size, BOOL disable_texture_cache)
+S64 LLTextureCache::initCache(ELLPath location, S64 max_size, BOOL texture_cache_mismatch)
{
llassert_always(getPending() == 0) ; //should not start accessing the texture cache before initialized.
@@ -948,20 +942,23 @@ S64 LLTextureCache::initCache(ELLPath location, S64 max_size, BOOL disable_textu
sCacheMaxTexturesSize = max_size;
max_size -= sCacheMaxTexturesSize;
- if(disable_texture_cache) //the texture cache is disabled
- {
- llinfos << "The texture cache is disabled!" << llendl ;
- setReadOnly(TRUE) ;
- purgeAllTextures(true);
-
- return max_size ;
- }
-
LL_INFOS("TextureCache") << "Headers: " << sCacheMaxEntries
<< " Textures size: " << sCacheMaxTexturesSize/(1024*1024) << " MB" << LL_ENDL;
setDirNames(location);
+ if(texture_cache_mismatch)
+ {
+ //if readonly, disable the texture cache,
+ //otherwise wipe out the texture cache.
+ purgeAllTextures(true);
+
+ if(mReadOnly)
+ {
+ return max_size ;
+ }
+ }
+
if (!mReadOnly)
{
LLFile::mkdir(mTexturesDirName);
@@ -998,7 +995,11 @@ LLAPRFile* LLTextureCache::openHeaderEntriesFile(bool readonly, S32 offset)
void LLTextureCache::closeHeaderEntriesFile()
{
- llassert_always(mHeaderAPRFile != NULL);
+ if(!mHeaderAPRFile)
+ {
+ return ;
+ }
+
delete mHeaderAPRFile;
mHeaderAPRFile = NULL;
}
@@ -1115,7 +1116,7 @@ S32 LLTextureCache::openAndReadEntry(const LLUUID& id, Entry& entry, bool create
}
//mHeaderMutex is locked before calling this.
-void LLTextureCache::writeEntryToHeaderImmediately(S32 idx, Entry& entry, bool write_header)
+void LLTextureCache::writeEntryToHeaderImmediately(S32& idx, Entry& entry, bool write_header)
{
LLAPRFile* aprfile ;
S32 bytes_written ;
@@ -1124,7 +1125,13 @@ void LLTextureCache::writeEntryToHeaderImmediately(S32 idx, Entry& entry, bool w
{
aprfile = openHeaderEntriesFile(false, 0);
bytes_written = aprfile->write((U8*)&mHeaderEntriesInfo, sizeof(EntriesInfo)) ;
- llassert_always(bytes_written == sizeof(EntriesInfo));
+ if(bytes_written != sizeof(EntriesInfo))
+ {
+ clearCorruptedCache() ; //clear the cache.
+ idx = -1 ;//mark the idx invalid.
+ return ;
+ }
+
mHeaderAPRFile->seek(APR_SET, offset);
}
else
@@ -1132,19 +1139,31 @@ void LLTextureCache::writeEntryToHeaderImmediately(S32 idx, Entry& entry, bool w
aprfile = openHeaderEntriesFile(false, offset);
}
bytes_written = aprfile->write((void*)&entry, (S32)sizeof(Entry));
- llassert_always(bytes_written == sizeof(Entry));
+ if(bytes_written != sizeof(Entry))
+ {
+ clearCorruptedCache() ; //clear the cache.
+ idx = -1 ;//mark the idx invalid.
+
+ return ;
+ }
+
closeHeaderEntriesFile();
mUpdatedEntryMap.erase(idx) ;
}
//mHeaderMutex is locked before calling this.
-void LLTextureCache::readEntryFromHeaderImmediately(S32 idx, Entry& entry)
+void LLTextureCache::readEntryFromHeaderImmediately(S32& idx, Entry& entry)
{
S32 offset = sizeof(EntriesInfo) + idx * sizeof(Entry);
LLAPRFile* aprfile = openHeaderEntriesFile(true, offset);
S32 bytes_read = aprfile->read((void*)&entry, (S32)sizeof(Entry));
- llassert_always(bytes_read == sizeof(Entry));
closeHeaderEntriesFile();
+
+ if(bytes_read != sizeof(Entry))
+ {
+ clearCorruptedCache() ; //clear the cache.
+ idx = -1 ;//mark the idx invalid.
+ }
}
//mHeaderMutex is locked before calling this.
@@ -1169,7 +1188,7 @@ void LLTextureCache::updateEntryTimeStamp(S32 idx, Entry& entry)
}
//update an existing entry, write to header file immediately.
-bool LLTextureCache::updateEntry(S32 idx, Entry& entry, S32 new_image_size, S32 new_data_size)
+bool LLTextureCache::updateEntry(S32& idx, Entry& entry, S32 new_image_size, S32 new_data_size)
{
S32 new_body_size = llmax(0, new_data_size - TEXTURE_CACHE_ENTRY_SIZE) ;
@@ -1240,6 +1259,10 @@ U32 LLTextureCache::openAndReadEntries(std::vector<Entry>& entries)
{
aprfile = openHeaderEntriesFile(false, 0);
updatedHeaderEntriesFile() ;
+ if(!aprfile)
+ {
+ return 0;
+ }
aprfile->seek(APR_SET, (S32)sizeof(EntriesInfo));
}
for (U32 idx=0; idx<num_entries; idx++)
@@ -1281,7 +1304,11 @@ void LLTextureCache::writeEntriesAndClose(const std::vector<Entry>& entries)
for (S32 idx=0; idx<num_entries; idx++)
{
S32 bytes_written = aprfile->write((void*)(&entries[idx]), (S32)sizeof(Entry));
- llassert_always(bytes_written == sizeof(Entry));
+ if(bytes_written != sizeof(Entry))
+ {
+ clearCorruptedCache() ; //clear the cache.
+ return ;
+ }
}
closeHeaderEntriesFile();
}
@@ -1307,7 +1334,11 @@ void LLTextureCache::updatedHeaderEntriesFile()
//entriesInfo
mHeaderAPRFile->seek(APR_SET, 0);
S32 bytes_written = mHeaderAPRFile->write((U8*)&mHeaderEntriesInfo, sizeof(EntriesInfo)) ;
- llassert_always(bytes_written == sizeof(EntriesInfo));
+ if(bytes_written != sizeof(EntriesInfo))
+ {
+ clearCorruptedCache() ; //clear the cache.
+ return ;
+ }
//write each updated entry
S32 entry_size = (S32)sizeof(Entry) ;
@@ -1323,7 +1354,11 @@ void LLTextureCache::updatedHeaderEntriesFile()
}
bytes_written = mHeaderAPRFile->write((void*)(&iter->second), entry_size);
- llassert_always(bytes_written == entry_size);
+ if(bytes_written != entry_size)
+ {
+ clearCorruptedCache() ; //clear the cache.
+ return ;
+ }
}
mUpdatedEntryMap.clear() ;
}
@@ -1444,6 +1479,29 @@ void LLTextureCache::readHeaderCache()
//////////////////////////////////////////////////////////////////////////////
+//the header mutex is locked before calling this.
+void LLTextureCache::clearCorruptedCache()
+{
+ llwarns << "the texture cache is corrupted, need to be cleared." << llendl ;
+
+ closeHeaderEntriesFile();//close possible file handler
+ purgeAllTextures(false) ; //clear the cache.
+
+ if (!mReadOnly) //regenerate the directory tree if not exists.
+ {
+ LLFile::mkdir(mTexturesDirName);
+
+ const char* subdirs = "0123456789abcdef";
+ for (S32 i=0; i<16; i++)
+ {
+ std::string dirname = mTexturesDirName + gDirUtilp->getDirDelimiter() + subdirs[i];
+ LLFile::mkdir(dirname);
+ }
+ }
+
+ return ;
+}
+
void LLTextureCache::purgeAllTextures(bool purge_directories)
{
if (!mReadOnly)
@@ -1472,11 +1530,14 @@ void LLTextureCache::purgeAllTextures(bool purge_directories)
mTexturesSizeTotal = 0;
mFreeList.clear();
mTexturesSizeTotal = 0;
+ mUpdatedEntryMap.clear();
// Info with 0 entries
mHeaderEntriesInfo.mVersion = sHeaderCacheVersion;
mHeaderEntriesInfo.mEntries = 0;
writeEntriesHeader();
+
+ llinfos << "The entire texture cache is cleared." << llendl ;
}
void LLTextureCache::purgeTextures(bool validate)
@@ -1644,7 +1705,8 @@ S32 LLTextureCache::setHeaderCacheEntry(const LLUUID& id, Entry& entry, S32 imag
{
updateEntry(idx, entry, imagesize, datasize);
}
- else // retry
+
+ if(idx < 0) // retry
{
readHeaderCache(); // We couldn't write an entry, so refresh the LRU
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 14:03:32 +0000