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Implemented load/save of chunk maps for current downloads.

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The side effect is that even when stopped, downloads show the correct downloaded size (up to the size of one chunk).



git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@1865 b45a01b8-16f6-495d-af2f-9b41ad6348cc
This commit is contained in:
csoler 2009-12-10 22:55:27 +00:00
parent 4d190963cf
commit b6c048a5fd
8 changed files with 200 additions and 48 deletions
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24
libretroshare/src/ft/ftchunkmap.h
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@ -80,6 +80,11 @@ class ChunkMap
// Constructor. Decides what will be the size of chunks and how many there will be.
ChunkMap(uint64_t file_size) ;
// constructor from saved map info
ChunkMap(uint64_t file_size,const std::vector<uint32_t>& map,uint32_t chunk_size,uint32_t chunk_number,FileChunksInfo::ChunkStrategy s) ;
// destructor
virtual ~ChunkMap() {}
// Returns an slice of data to be asked to the peer within a chunk.
@ -106,13 +111,14 @@ class ChunkMap
void setStrategy(FileChunksInfo::ChunkStrategy s) { _strategy = s ; }
#ifdef TO_DO
// Properly fills an vector of fixed size chunks with availability or download state.
// chunks is given with the proper number of chunks and we have to adapt to it. This can be used
// to display square chunks in the gui or display a blue bar of availability by collapsing info from all peers.
void linearize(FileChunksInfo& info) const ;
void buildAvailabilityMap(std::vector<uint32_t>& map,uint32_t& chunk_size,uint32_t& chunk_number,FileChunksInfo::ChunkStrategy& s) const ;
void loadAvailabilityMap(const std::vector<uint32_t>& map,uint32_t chunk_size,uint32_t chunk_number,FileChunksInfo::ChunkStrategy s) ;
#ifdef TO_DO
// Updates the peer's availablility map
//
void setPeerAvailabilityMap(const std::string& peer_id,const std::vector<uint32_t>& peer_map) ;
@ -131,17 +137,17 @@ class ChunkMap
uint32_t getAvailableChunk(uint32_t start_location,const std::string& peer_id) const ;
private:
const uint64_t _file_size ; // total size of the file in bytes.
const uint32_t _chunk_size ; // Size of chunks. Common to all chunks.
FileChunksInfo::ChunkStrategy _strategy ; // how do we allocate new chunks
std::map<std::string,Chunk> _active_chunks_feed ; // vector of chunks being downloaded. Exactly one chunk per peer id.
std::map<ChunkNumber,ChunkDownloadInfo> _slices_to_download ; // list of (slice id,slice size)
uint64_t _file_size ; // total size of the file in bytes.
uint32_t _chunk_size ; // Size of chunks. Common to all chunks.
FileChunksInfo::ChunkStrategy _strategy ; // how do we allocate new chunks
std::map<std::string,Chunk> _active_chunks_feed ; // vector of chunks being downloaded. Exactly one chunk per peer id.
std::map<ChunkNumber,ChunkDownloadInfo> _slices_to_download ; // list of (slice id,slice size)
std::vector<FileChunksInfo::ChunkState> _map ; // vector of chunk state over the whole file
std::vector<FileChunksInfo::ChunkState> _map ; // vector of chunk state over the whole file
std::map<std::string,std::vector<uint32_t> > _peers_chunks_availability ; // what does each source peer have.
uint64_t _total_downloaded ;
uint64_t _total_downloaded ;
};