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/**
* @file llvocache.cpp
* @brief Cache of objects on the viewer.
*
* Copyright (c) 2003-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#include "llviewerprecompiledheaders.h"
#include "llvocache.h"
#include "llerror.h"
//---------------------------------------------------------------------------
// LLVOCacheEntry
//---------------------------------------------------------------------------
LLVOCacheEntry::LLVOCacheEntry(U32 local_id, U32 crc, LLDataPackerBinaryBuffer &dp)
{
mLocalID = local_id;
mCRC = crc;
mHitCount = 0;
mDupeCount = 0;
mCRCChangeCount = 0;
mBuffer = new U8[dp.getBufferSize()];
mDP.assignBuffer(mBuffer, dp.getBufferSize());
mDP = dp;
}
LLVOCacheEntry::LLVOCacheEntry()
{
mLocalID = 0;
mCRC = 0;
mHitCount = 0;
mDupeCount = 0;
mCRCChangeCount = 0;
mBuffer = NULL;
mDP.assignBuffer(mBuffer, 0);
}
LLVOCacheEntry::LLVOCacheEntry(FILE *fp)
{
S32 size;
fread(&mLocalID, 1, sizeof(U32), fp);
fread(&mCRC, 1, sizeof(U32), fp);
fread(&mHitCount, 1, sizeof(S32), fp);
fread(&mDupeCount, 1, sizeof(S32), fp);
fread(&mCRCChangeCount, 1, sizeof(S32), fp);
fread(&size, 1, sizeof(S32), fp);
// Corruption in the cache entries
if ((size > 10000) || (size < 1))
{
// We've got a bogus size, skip reading it.
// We won't bother seeking, because the rest of this file
// is likely bogus, and will be tossed anyway.
llwarns << "Bogus cache entry, size " << size << ", aborting!" << llendl;
mLocalID = 0;
mCRC = 0;
mBuffer = NULL;
return;
}
mBuffer = new U8[size];
fread(mBuffer, 1, size, fp);
mDP.assignBuffer(mBuffer, size);
}
LLVOCacheEntry::~LLVOCacheEntry()
{
delete [] mBuffer;
}
// New CRC means the object has changed.
void LLVOCacheEntry::assignCRC(U32 crc, LLDataPackerBinaryBuffer &dp)
{
if ( (mCRC != crc)
||(mDP.getBufferSize() == 0))
{
mCRC = crc;
mHitCount = 0;
mCRCChangeCount++;
mDP.freeBuffer();
mBuffer = new U8[dp.getBufferSize()];
mDP.assignBuffer(mBuffer, dp.getBufferSize());
mDP = dp;
}
}
LLDataPackerBinaryBuffer *LLVOCacheEntry::getDP(U32 crc)
{
if ( (mCRC != crc)
||(mDP.getBufferSize() == 0))
{
//llinfos << "Not getting cache entry, invalid!" << llendl;
return NULL;
}
mHitCount++;
return &mDP;
}
void LLVOCacheEntry::recordHit()
{
mHitCount++;
}
void LLVOCacheEntry::dump() const
{
llinfos << "local " << mLocalID
<< " crc " << mCRC
<< " hits " << mHitCount
<< " dupes " << mDupeCount
<< " change " << mCRCChangeCount
<< llendl;
}
void LLVOCacheEntry::writeToFile(FILE *fp) const
{
fwrite(&mLocalID, 1, sizeof(U32), fp);
fwrite(&mCRC, 1, sizeof(U32), fp);
fwrite(&mHitCount, 1, sizeof(S32), fp);
fwrite(&mDupeCount, 1, sizeof(S32), fp);
fwrite(&mCRCChangeCount, 1, sizeof(S32), fp);
S32 size = mDP.getBufferSize();
fwrite(&size, 1, sizeof(S32), fp);
fwrite(mBuffer, 1, size, fp);
}
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