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Diffstat (limited to 'indra/newview/llvocache.cpp')
-rw-r--r--indra/newview/llvocache.cpp125
1 files changed, 73 insertions, 52 deletions
diff --git a/indra/newview/llvocache.cpp b/indra/newview/llvocache.cpp
index 689eeee0e3..5ebc65405f 100644
--- a/indra/newview/llvocache.cpp
+++ b/indra/newview/llvocache.cpp
@@ -44,6 +44,9 @@ F32 LLVOCacheEntry::sFrontPixelThreshold = 1.0f;
F32 LLVOCacheEntry::sRearPixelThreshold = 1.0f;
BOOL LLVOCachePartition::sNeedsOcclusionCheck = FALSE;
+const S32 ENTRY_HEADER_SIZE = 6 * sizeof(S32);
+const S32 MAX_ENTRY_BODY_SIZE = 10000;
+
BOOL check_read(LLAPRFile* apr_file, void* src, S32 n_bytes)
{
return apr_file->read(src, n_bytes) == n_bytes ;
@@ -111,32 +114,22 @@ LLVOCacheEntry::LLVOCacheEntry(LLAPRFile* apr_file)
{
S32 size = -1;
BOOL success;
+ static U8 data_buffer[ENTRY_HEADER_SIZE];
mDP.assignBuffer(mBuffer, 0);
-
- success = check_read(apr_file, &mLocalID, sizeof(U32));
- if(success)
- {
- success = check_read(apr_file, &mCRC, sizeof(U32));
- }
- if(success)
- {
- success = check_read(apr_file, &mHitCount, sizeof(S32));
- }
- if(success)
- {
- success = check_read(apr_file, &mDupeCount, sizeof(S32));
- }
- if(success)
- {
- success = check_read(apr_file, &mCRCChangeCount, sizeof(S32));
- }
- if(success)
- {
- success = check_read(apr_file, &size, sizeof(S32));
+
+ success = check_read(apr_file, (void *)data_buffer, ENTRY_HEADER_SIZE);
+ if (success)
+ {
+ memcpy(&mLocalID, data_buffer, sizeof(U32));
+ memcpy(&mCRC, data_buffer + sizeof(U32), sizeof(U32));
+ memcpy(&mHitCount, data_buffer + (2 * sizeof(U32)), sizeof(S32));
+ memcpy(&mDupeCount, data_buffer + (3 * sizeof(U32)), sizeof(S32));
+ memcpy(&mCRCChangeCount, data_buffer + (4 * sizeof(U32)), sizeof(S32));
+ memcpy(&size, data_buffer + (5 * sizeof(U32)), sizeof(S32));
// Corruption in the cache entries
- if ((size > 10000) || (size < 1))
+ if ((size > MAX_ENTRY_BODY_SIZE) || (size < 1))
{
// We've got a bogus size, skip reading it.
// We won't bother seeking, because the rest of this file
@@ -345,26 +338,25 @@ void LLVOCacheEntry::dump() const
<< LL_ENDL;
}
-BOOL LLVOCacheEntry::writeToFile(LLAPRFile* apr_file) const
+S32 LLVOCacheEntry::writeToBuffer(U8 *data_buffer) const
{
- static const S32 data_buffer_size = 6 * sizeof(S32);
- static U8 data_buffer[data_buffer_size];
S32 size = mDP.getBufferSize();
+ if (size > MAX_ENTRY_BODY_SIZE)
+ {
+ LL_WARNS() << "Failed to write entry with size above allowed limit: " << size << LL_ENDL;
+ return 0;
+ }
+
memcpy(data_buffer, &mLocalID, sizeof(U32));
memcpy(data_buffer + sizeof(U32), &mCRC, sizeof(U32));
memcpy(data_buffer + (2 * sizeof(U32)), &mHitCount, sizeof(S32));
memcpy(data_buffer + (3 * sizeof(U32)), &mDupeCount, sizeof(S32));
memcpy(data_buffer + (4 * sizeof(U32)), &mCRCChangeCount, sizeof(S32));
memcpy(data_buffer + (5 * sizeof(U32)), &size, sizeof(S32));
+ memcpy(data_buffer + ENTRY_HEADER_SIZE, (void*)mBuffer, size);
- BOOL success = check_write(apr_file, (void*)data_buffer, data_buffer_size);
- if (success)
- {
- success = check_write(apr_file, (void*)mBuffer, size);
- }
-
- return success;
+ return ENTRY_HEADER_SIZE + size;
}
//static
@@ -1393,11 +1385,11 @@ void LLVOCache::readFromCache(U64 handle, const LLUUID& id, LLVOCacheEntry::voca
bool success = true ;
{
std::string filename;
+ LLUUID cache_id;
getObjectCacheFilename(handle, filename);
LLAPRFile apr_file(filename, APR_READ|APR_BINARY, mLocalAPRFilePoolp);
- LLUUID cache_id ;
- success = check_read(&apr_file, cache_id.mData, UUID_BYTES) ;
+ success = check_read(&apr_file, cache_id.mData, UUID_BYTES);
if(success)
{
@@ -1409,7 +1401,7 @@ void LLVOCache::readFromCache(U64 handle, const LLUUID& id, LLVOCacheEntry::voca
if(success)
{
- S32 num_entries;
+ S32 num_entries; // if removal was enabled during write num_entries might be wrong
success = check_read(&apr_file, &num_entries, sizeof(S32)) ;
if(success)
@@ -1516,28 +1508,57 @@ void LLVOCache::writeToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry:
{
std::string filename;
getObjectCacheFilename(handle, filename);
- LLAPRFile apr_file(filename, APR_CREATE|APR_WRITE|APR_BINARY, mLocalAPRFilePoolp);
+ LLAPRFile apr_file(filename, APR_CREATE|APR_WRITE|APR_BINARY|APR_TRUNCATE, mLocalAPRFilePoolp);
- success = check_write(&apr_file, (void*)id.mData, UUID_BYTES) ;
-
+ success = check_write(&apr_file, (void*)id.mData, UUID_BYTES);
if(success)
{
- S32 num_entries = cache_entry_map.size() ;
+ S32 num_entries = cache_entry_map.size(); // if removal is enabled num_entries might be wrong
success = check_write(&apr_file, &num_entries, sizeof(S32));
-
- // This can have a lot of entries, so might be better to dump them into buffer first and write in one go.
- for (LLVOCacheEntry::vocache_entry_map_t::const_iterator iter = cache_entry_map.begin(); success && iter != cache_entry_map.end(); ++iter)
- {
- if(!removal_enabled || iter->second->isValid())
- {
- success = iter->second->writeToFile(&apr_file) ;
- if(!success)
- {
- break;
- }
- }
- }
+ if (success)
+ {
+ const S32 buffer_size = 32768; //should be large enough for couple MAX_ENTRY_BODY_SIZE
+ U8 data_buffer[buffer_size]; // generaly entries are fairly small, so collect them and drop onto disk in one go
+ S32 size_in_buffer = 0;
+
+ // This can have a lot of entries, so might be better to dump them into buffer first and write in one go.
+ for (LLVOCacheEntry::vocache_entry_map_t::const_iterator iter = cache_entry_map.begin(); success && iter != cache_entry_map.end(); ++iter)
+ {
+ if (!removal_enabled || iter->second->isValid())
+ {
+ S32 size = iter->second->writeToBuffer(data_buffer + size_in_buffer);
+
+ if (size > ENTRY_HEADER_SIZE) // body is minimum of 1
+ {
+ size_in_buffer += size;
+ }
+ else
+ {
+ success = false;
+ break;
+ }
+
+ // Make sure we have space in buffer for next element
+ if (buffer_size - size_in_buffer < MAX_ENTRY_BODY_SIZE + ENTRY_HEADER_SIZE)
+ {
+ success = check_write(&apr_file, (void*)data_buffer, size_in_buffer);
+ size_in_buffer = 0;
+ if (!success)
+ {
+ break;
+ }
+ }
+ }
+ }
+
+ if (success && size_in_buffer > 0)
+ {
+ // final write
+ success = check_write(&apr_file, (void*)data_buffer, size_in_buffer);
+ size_in_buffer = 0;
+ }
+ }
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-05 09:21:20 +0000