void LLTextureCache::writeEntryAndClose(S32 idx, Entry& entry)
{
if (idx >= 0)
{
if (!mReadOnly)
{
entry.mTime = time(NULL);
if(entry.mImageSize < entry.mBodySize)
{
// Just say no, due to my messing around to cache discards other than 0 we can end up here
// after recalling an image from cache at a lower discard than cached. RC
return;
}
llassert_always(entry.mImageSize == 0 || entry.mImageSize == -1 || entry.mImageSize > entry.mBodySize);
if (entry.mBodySize > 0)
{
mTexturesSizeMap[entry.mID] = entry.mBodySize;
}
// llinfos << "Updating TE: " << idx << ": " << id << " Size: " << entry.mBodySize << " Time: " << entry.mTime << llendl;
S32 offset = sizeof(EntriesInfo) + idx * sizeof(Entry);
LLAPRFile* aprfile = openHeaderEntriesFile(false, offset);
S32 bytes_written = aprfile->write((void*)&entry, (S32)sizeof(Entry));
llassert_always(bytes_written == sizeof(Entry));
mHeaderEntriesMaxWriteIdx = llmax(mHeaderEntriesMaxWriteIdx, idx);
closeHeaderEntriesFile();
}
}
}
void LLTextureCache::writeEntriesAndClose(const std::vector<Entry>& entries)
{
S32 num_entries = entries.size();
llassert_always(num_entries == mHeaderEntriesInfo.mEntries);
if (!mReadOnly)
{
LLAPRFile* aprfile = openHeaderEntriesFile(false, (S32)sizeof(EntriesInfo));
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));
}
mHeaderEntriesMaxWriteIdx = llmax(mHeaderEntriesMaxWriteIdx, num_entries-1);
closeHeaderEntriesFile();
}
}
U32 LLTextureCache::openAndReadEntries(std::vector<Entry>& entries)
{
U32 num_entries = mHeaderEntriesInfo.mEntries;
mHeaderIDMap.clear();
mTexturesSizeMap.clear();
mFreeList.clear();
mTexturesSizeTotal = 0;
LLAPRFile* aprfile = openHeaderEntriesFile(false, (S32)sizeof(EntriesInfo));
for (U32 idx=0; idx<num_entries; idx++)
{
Entry entry;
S32 bytes_read = aprfile->read((void*)(&entry), (S32)sizeof(Entry));
if (bytes_read < sizeof(Entry))
{
llwarns << "Corrupted header entries, failed at " << idx << " / " << num_entries << llendl;
closeHeaderEntriesFile();
purgeAllTextures(false);
return 0;
}
entries.push_back(entry);
// llinfos << "ENTRY: " << entry.mTime << " TEX: " << entry.mID << " IDX: " << idx << " Size: " << entry.mImageSize << llendl;
if (entry.mImageSize < 0)
{
mFreeList.insert(idx);
}
else
{
mHeaderIDMap[entry.mID] = idx;
if (entry.mBodySize > 0)
{
mTexturesSizeMap[entry.mID] = entry.mBodySize;
mTexturesSizeTotal += entry.mBodySize;
}
llassert_always(entry.mImageSize == 0 || entry.mImageSize > entry.mBodySize);
}
}
closeHeaderEntriesFile();
return num_entries;
}
void LLTextureCache::writeEntryAndClose(S32 idx, Entry& entry)
{
if (idx >= 0)
{
if (!mReadOnly)
{
entry.mTime = time(NULL);
llassert_always(entry.mImageSize == 0 || entry.mImageSize == -1 || entry.mImageSize > entry.mBodySize);
if (entry.mBodySize > 0)
{
mTexturesSizeMap[entry.mID] = entry.mBodySize;
}
// llinfos << "Updating TE: " << idx << ": " << id << " Size: " << entry.mBodySize << " Time: " << entry.mTime << llendl;
S32 offset = sizeof(EntriesInfo) + idx * sizeof(Entry);
LLAPRFile* aprfile = openHeaderEntriesFile(false, offset);
S32 bytes_written = aprfile->write((void*)&entry, (S32)sizeof(Entry));
llassert_always(bytes_written == sizeof(Entry));
mHeaderEntriesMaxWriteIdx = llmax(mHeaderEntriesMaxWriteIdx, idx);
closeHeaderEntriesFile();
}
}
}
S32 LLTextureCache::openAndReadEntry(const LLUUID& id, Entry& entry, bool create)
{
S32 idx = -1;
id_map_t::iterator iter1 = mHeaderIDMap.find(id);
if (iter1 != mHeaderIDMap.end())
{
idx = iter1->second;
}
if (idx < 0)
{
if (create && !mReadOnly)
{
if (mHeaderEntriesInfo.mEntries < sCacheMaxEntries)
{
// Add an entry to the end of the list
idx = mHeaderEntriesInfo.mEntries++;
}
else if (!mFreeList.empty())
{
idx = *(mFreeList.begin());
mFreeList.erase(mFreeList.begin());
}
else
{
// Look for a still valid entry in the LRU
for (std::set<LLUUID>::iterator iter2 = mLRU.begin(); iter2 != mLRU.end();)
{
std::set<LLUUID>::iterator curiter2 = iter2++;
LLUUID oldid = *curiter2;
// Erase entry from LRU regardless
mLRU.erase(curiter2);
// Look up entry and use it if it is valid
id_map_t::iterator iter3 = mHeaderIDMap.find(oldid);
if (iter3 != mHeaderIDMap.end() && iter3->second >= 0)
{
idx = iter3->second;
mHeaderIDMap.erase(oldid);
mTexturesSizeMap.erase(oldid);
break;
}
}
// if (idx < 0) at this point, we will rebuild the LRU
// and retry if called from setHeaderCacheEntry(),
// otherwise this shouldn't happen and will trigger an error
}
if (idx >= 0)
{
// Set the header index
mHeaderIDMap[id] = idx;
llassert_always(mTexturesSizeMap.erase(id) == 0);
// Initialize the entry (will get written later)
entry.init(id, time(NULL));
// Update Header
writeEntriesHeader();
// Write Entry
S32 offset = sizeof(EntriesInfo) + idx * sizeof(Entry);
LLAPRFile* aprfile = openHeaderEntriesFile(false, offset);
S32 bytes_written = aprfile->write((void*)&entry, (S32)sizeof(Entry));
llassert_always(bytes_written == sizeof(Entry));
mHeaderEntriesMaxWriteIdx = llmax(mHeaderEntriesMaxWriteIdx, idx);
closeHeaderEntriesFile();
}
}
}
else
{
// Remove this entry from the LRU if it exists
mLRU.erase(id);
// Read the 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));
llassert_always(entry.mImageSize == 0 || entry.mImageSize == -1 || entry.mImageSize > entry.mBodySize);
closeHeaderEntriesFile();
}
return idx;
}
