diff options
Diffstat (limited to 'indra/newview')
-rw-r--r-- | indra/newview/llvocache.cpp | 125 | ||||
-rw-r--r-- | indra/newview/llvocache.h | 2 |
2 files changed, 74 insertions, 53 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; + } + } } } diff --git a/indra/newview/llvocache.h b/indra/newview/llvocache.h index 6c95541c11..dd6afd6b85 100644 --- a/indra/newview/llvocache.h +++ b/indra/newview/llvocache.h @@ -106,7 +106,7 @@ public: F32 getSceneContribution() const { return mSceneContrib;} void dump() const; - BOOL writeToFile(LLAPRFile* apr_file) const; + S32 writeToBuffer(U8 *data_buffer) const; LLDataPackerBinaryBuffer *getDP(); void recordHit(); void recordDupe() { mDupeCount++; } |