135 lines
2.8 KiB
C++
135 lines
2.8 KiB
C++
/**
|
|
* @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);
|
|
}
|