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Removed LoadedBlock and put timestamp into regular Block.

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This commit is contained in:
David Williams
2013-06-25 22:54:40 +02:00
parent 900e4e0ecd
commit 0cf3de4e76
3 changed files with 27 additions and 42 deletions
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2
library/PolyVoxCore/include/PolyVoxCore/Impl/Block.h
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@@ -65,6 +65,8 @@ namespace PolyVox
uint16_t m_uSideLength;
uint8_t m_uSideLengthPower;
bool m_bIsUncompressedDataModified;
uint32_t timestamp;
};
}

18
library/PolyVoxCore/include/PolyVoxCore/LargeVolume.h
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@@ -231,18 +231,6 @@ namespace PolyVox
// Make the ConstVolumeProxy a friend
friend class ConstVolumeProxy<VoxelType>;
struct LoadedBlock
{
public:
LoadedBlock(uint16_t uSideLength, Compressor* pCompressor)
:block(uSideLength, pCompressor)
,timestamp(0)
{
}
Block<VoxelType> block;
uint32_t timestamp;
};
#endif
public:
@@ -352,18 +340,18 @@ namespace PolyVox
//polyvox_function<void(const ConstVolumeProxy<VoxelType>&, const Region&)> m_funcDataOverflowHandler;
Block<VoxelType>* getUncompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const;
void eraseBlock(typename std::map<Vector3DInt32, LoadedBlock, BlockPositionCompare>::iterator itBlock) const;
void eraseBlock(typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator itBlock) const;
/// this function can be called by m_funcDataRequiredHandler without causing any weird effects
bool setVoxelAtConst(int32_t uXPos, int32_t uYPos, int32_t uZPos, VoxelType tValue) const;
//The block data
mutable std::map<Vector3DInt32, LoadedBlock, BlockPositionCompare> m_pBlocks;
mutable std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare> m_pBlocks;
//The cache of uncompressed blocks. The uncompressed block data and the timestamps are stored here rather
//than in the Block class. This is so that in the future each VolumeIterator might to maintain its own cache
//of blocks. However, this could mean the same block data is uncompressed and modified in more than one
//location in memory... could be messy with threading.
mutable std::vector< LoadedBlock* > m_vecBlocksWithUncompressedData;
mutable std::vector< Block<VoxelType>* > m_vecBlocksWithUncompressedData;
mutable uint32_t m_uTimestamper;
mutable Vector3DInt32 m_v3dLastAccessedBlockPos;
mutable Block<VoxelType>* m_pLastAccessedBlock;

49
library/PolyVoxCore/include/PolyVoxCore/LargeVolume.inl
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@@ -381,7 +381,7 @@ namespace PolyVox
for(int32_t z = v3dStart.getZ(); z <= v3dEnd.getZ(); z++)
{
Vector3DInt32 pos(x,y,z);
typename std::map<Vector3DInt32, LoadedBlock, BlockPositionCompare>::iterator itBlock = m_pBlocks.find(pos);
typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator itBlock = m_pBlocks.find(pos);
if(itBlock != m_pBlocks.end())
{
@@ -412,7 +412,7 @@ namespace PolyVox
template <typename VoxelType>
void LargeVolume<VoxelType>::flushAll()
{
typename std::map<Vector3DInt32, LoadedBlock, BlockPositionCompare>::iterator i;
typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator i;
//Replaced the for loop here as the call to
//eraseBlock was invalidating the iterator.
while(m_pBlocks.size() > 0)
@@ -446,7 +446,7 @@ namespace PolyVox
for(int32_t z = v3dStart.getZ(); z <= v3dEnd.getZ(); z++)
{
Vector3DInt32 pos(x,y,z);
typename std::map<Vector3DInt32, LoadedBlock, BlockPositionCompare>::iterator itBlock = m_pBlocks.find(pos);
typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator itBlock = m_pBlocks.find(pos);
if(itBlock == m_pBlocks.end())
{
// not loaded, not unloading
@@ -471,7 +471,7 @@ namespace PolyVox
{
for(uint32_t ct = 0; ct < m_vecBlocksWithUncompressedData.size(); ct++)
{
m_vecBlocksWithUncompressedData[ct]->block.destroyUncompressedData();
m_vecBlocksWithUncompressedData[ct]->destroyUncompressedData();
}
m_vecBlocksWithUncompressedData.clear();
}
@@ -531,7 +531,7 @@ namespace PolyVox
}
template <typename VoxelType>
void LargeVolume<VoxelType>::eraseBlock(typename std::map<Vector3DInt32, LoadedBlock, BlockPositionCompare>::iterator itBlock) const
void LargeVolume<VoxelType>::eraseBlock(typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator itBlock) const
{
if(m_pPager)
{
@@ -551,7 +551,7 @@ namespace PolyVox
if(m_vecBlocksWithUncompressedData[ct] == &(itBlock->second))
{
// TODO: compression is unneccessary? or will not compressing this cause a memleak?
itBlock->second.block.destroyUncompressedData();
itBlock->second.destroyUncompressedData();
// put last object in cache here
m_vecBlocksWithUncompressedData[ct] = m_vecBlocksWithUncompressedData.back();
// decrease cache size by one since last element is now in here twice
@@ -602,7 +602,7 @@ namespace PolyVox
return m_pLastAccessedBlock;
}
typename std::map<Vector3DInt32, LoadedBlock, BlockPositionCompare>::iterator itBlock = m_pBlocks.find(v3dBlockPos);
typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator itBlock = m_pBlocks.find(v3dBlockPos);
// check whether the block is already loaded
if(itBlock == m_pBlocks.end())
{
@@ -615,8 +615,8 @@ namespace PolyVox
if(m_pBlocks.size() == m_uMaxNumberOfBlocksInMemory)
{
// find the least recently used block
typename std::map<Vector3DInt32, LoadedBlock, BlockPositionCompare>::iterator i;
typename std::map<Vector3DInt32, LoadedBlock, BlockPositionCompare>::iterator itUnloadBlock = m_pBlocks.begin();
typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator i;
typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator itUnloadBlock = m_pBlocks.begin();
for(i = m_pBlocks.begin(); i != m_pBlocks.end(); i++)
{
if(i->second.timestamp < itUnloadBlock->second.timestamp)
@@ -629,12 +629,7 @@ namespace PolyVox
}
// create the new block
LoadedBlock newBlock(m_uBlockSideLength, m_pCompressor);
// Blocks start out compressed - should we change this?
// Or maybe we should just 'seed' them with compressed data,
// rather than creating an empty block and then compressing?
//newBlock.block.destroyUncompressedData();
Block<VoxelType> newBlock(m_uBlockSideLength, m_pCompressor);
itBlock = m_pBlocks.insert(std::make_pair(v3dBlockPos, newBlock)).first;
@@ -657,12 +652,12 @@ namespace PolyVox
}
//Get the block and mark that we accessed it
LoadedBlock& loadedBlock = itBlock->second;
loadedBlock.timestamp = ++m_uTimestamper;
Block<VoxelType>& block = itBlock->second;
block.timestamp = ++m_uTimestamper;
m_v3dLastAccessedBlockPos = v3dBlockPos;
m_pLastAccessedBlock = &(loadedBlock.block);
m_pLastAccessedBlock = &block;
if(loadedBlock.block.hasUncompressedData())
if(block.hasUncompressedData())
{
POLYVOX_ASSERT(m_pLastAccessedBlock->m_tUncompressedData, "Block has no uncompressed data");
return m_pLastAccessedBlock;
@@ -687,20 +682,20 @@ namespace PolyVox
}
//Compress the least recently used block.
m_vecBlocksWithUncompressedData[leastRecentlyUsedBlockIndex]->block.destroyUncompressedData();
m_vecBlocksWithUncompressedData[leastRecentlyUsedBlockIndex]->destroyUncompressedData();
//We don't actually remove any elements from this vector, we
//simply change the pointer to point at the new uncompressed bloack.
m_vecBlocksWithUncompressedData[leastRecentlyUsedBlockIndex] = &loadedBlock;
m_vecBlocksWithUncompressedData[leastRecentlyUsedBlockIndex] = &block;
}
else
{
m_vecBlocksWithUncompressedData.push_back(&loadedBlock);
m_vecBlocksWithUncompressedData.push_back(&block);
}
loadedBlock.block.createUncompressedData();
block.createUncompressedData();
m_pLastAccessedBlock = &(loadedBlock.block);
m_pLastAccessedBlock = &(block);
POLYVOX_ASSERT(m_pLastAccessedBlock->m_tUncompressedData, "Block has no uncompressed data");
return m_pLastAccessedBlock;
}
@@ -725,15 +720,15 @@ namespace PolyVox
uint32_t uSizeInBytes = sizeof(LargeVolume);
//Memory used by the blocks
typename std::map<Vector3DInt32, LoadedBlock, BlockPositionCompare>::iterator i;
typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator i;
for(i = m_pBlocks.begin(); i != m_pBlocks.end(); i++)
{
//Inaccurate - account for rest of loaded block.
uSizeInBytes += i->second.block.calculateSizeInBytes();
uSizeInBytes += i->second.calculateSizeInBytes();
}
//Memory used by the block cache.
uSizeInBytes += m_vecBlocksWithUncompressedData.capacity() * sizeof(LoadedBlock);
uSizeInBytes += m_vecBlocksWithUncompressedData.capacity() * sizeof(Block<VoxelType>);
uSizeInBytes += m_vecBlocksWithUncompressedData.size() * m_uBlockSideLength * m_uBlockSideLength * m_uBlockSideLength * sizeof(VoxelType);
return uSizeInBytes;