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Piece Class Reference Information about one piece of the transfer. More... #include <Piece.h> List of all members. Public Member Functions   Piece (size_t nr, size_t piece_length)   ~Piece () size_t  GetNumber () void  Write (Session *, size_t offset, size_t length, unsigned char *) size_t  NumberOfSlices () size_t  PieceLength () size_t  SliceSize () size_t  Complete (size_t offset) void  SetComplete (size_t offset, size_t length) size_t  Requested (size_t offset) void  SetRequested (size_t offset, size_t length) void  ClearComplete () void  ClearRequested () bool  GetRandomNotRequested (size_t &offset, size_t &length) bool  AllRequested () size_t  NumberComplete () size_t  NumberRequested () bool  Complete () void  save_slice_m (FILE *, slice_m &) void  load_slice_m (FILE *, slice_m &) slice_m &  MapComplete () slice_m &  MapRequested () Private Types typedef std::map< size_t, size_t >  slice_m Private Member Functions   Piece (const Piece &) Piece &  operator= (const Piece &) Private Attributes size_t  m_nr size_t  m_piece_length slice_m  m_complete slice_m  m_requested Detailed Description Information about one piece of the transfer. Definition at line 39 of file Piece.h. Member Typedef Documentation typedef std::map<size_t,size_t> Piece::slice_m [private] Definition at line 41 of file Piece.h. Constructor & Destructor Documentation Piece::Piece ( size_t  nr, size_t  piece_length   ) File ......... Piece.cpp Published .... 2005-06-14 Author ....... grymse@alhem.net Definition at line 32 of file Piece.cpp. :m_nr(nr) ,m_piece_length(piece_length) { } Piece::~Piece (  )  Definition at line 39 of file Piece.cpp. { } Piece::Piece ( const Piece &   )  [inline, private] Definition at line 132 of file Piece.h. {} // copy constructor Member Function Documentation size_t Piece::GetNumber (  )  [inline] Definition at line 46 of file Piece.h. References m_nr. { return m_nr; } void Piece::Write ( Session *  , size_t  offset, size_t  length, unsigned char *    ) Definition at line 44 of file Piece.cpp. { } size_t Piece::NumberOfSlices (  )  [inline] Definition at line 48 of file Piece.h. References m_piece_length, and SLICE. { return m_piece_length / SLICE; } size_t Piece::PieceLength (  )  [inline] Definition at line 49 of file Piece.h. References m_piece_length. { return m_piece_length; } size_t Piece::SliceSize (  )  [inline] Definition at line 50 of file Piece.h. References SLICE. { return SLICE; } size_t Piece::Complete ( size_t  offset  )  [inline] Definition at line 52 of file Piece.h. References m_complete. { return m_complete[offset]; } void Piece::SetComplete ( size_t  offset, size_t  length   ) [inline] Definition at line 53 of file Piece.h. References m_complete. { m_complete[offset] = length; } size_t Piece::Requested ( size_t  offset  )  [inline] Definition at line 54 of file Piece.h. References m_requested. Referenced by AllRequested(), GetRandomNotRequested(), and NumberRequested(). { return m_requested[offset]; } void Piece::SetRequested ( size_t  offset, size_t  length   ) [inline] Definition at line 55 of file Piece.h. References m_requested. { if (!length || length > m_requested[offset]) m_requested[offset] = length; } void Piece::ClearComplete (  )  Definition at line 49 of file Piece.cpp. References m_complete. { while (m_complete.size()) { slice_m::iterator it = m_complete.begin(); m_complete.erase(it); } } void Piece::ClearRequested (  )  Definition at line 59 of file Piece.cpp. References m_requested. { while (m_requested.size()) { slice_m::iterator it = m_requested.begin(); m_requested.erase(it); } } bool Piece::GetRandomNotRequested ( size_t &  offset, size_t &  length   ) [inline] Definition at line 63 of file Piece.h. References Complete(), m_piece_length, Requested(), and SLICE. { std::vector<size_t> available; for (size_t i = 0; i < m_piece_length; i += SLICE) { if (!Complete(i) && !Requested(i)) { available.push_back(i); } } size_t q; if ((q = available.size()) > 0) { #ifdef _WIN32 offset = available[rand() % q]; #else offset = available[random() % q]; #endif length = MIN(SLICE, m_piece_length - offset); return true; } return false; } bool Piece::AllRequested (  )  [inline] Definition at line 86 of file Piece.h. References Complete(), m_piece_length, Requested(), and SLICE. { for (size_t i = 0; i < m_piece_length; i += SLICE) { if (!Complete(i) && !Requested(i)) { return false; } } return true; } size_t Piece::NumberComplete (  )  [inline] Definition at line 97 of file Piece.h. References Complete(), m_piece_length, and SLICE. { size_t q = 0; for (size_t i = 0; i < m_piece_length; i += SLICE) { if (Complete(i)) q++; } return q; } size_t Piece::NumberRequested (  )  [inline] Definition at line 106 of file Piece.h. References Complete(), m_piece_length, Requested(), and SLICE. { size_t q = 0; for (size_t i = 0; i < m_piece_length; i += SLICE) { if (Requested(i) && !Complete(i)) q++; } return q; } bool Piece::Complete (  )  [inline] Definition at line 115 of file Piece.h. References m_piece_length, and SLICE. Referenced by AllRequested(), GetRandomNotRequested(), NumberComplete(), and NumberRequested(). { for (size_t i = 0; i < m_piece_length; i += SLICE) { if (!Complete(i)) { return false; } } return true; } void Piece::save_slice_m ( FILE *  , slice_m &    ) Definition at line 69 of file Piece.cpp. { size_t q = ref.size(); fwrite(&q, sizeof(size_t), 1, fil); for (slice_m::iterator it = ref.begin(); it != ref.end(); it++) { size_t offset = (*it).first; size_t length = (*it).second; fwrite(&offset, sizeof(size_t), 1, fil); fwrite(&length, sizeof(size_t), 1, fil); } } void Piece::load_slice_m ( FILE *  , slice_m &    ) Definition at line 83 of file Piece.cpp. { size_t q; fread(&q, sizeof(size_t), 1, fil); while (q--) { size_t offset, length; fread(&offset, sizeof(size_t), 1, fil); fread(&length, sizeof(size_t), 1, fil); ref[offset] = length; } } slice_m& Piece::MapComplete (  )  [inline] Definition at line 128 of file Piece.h. References m_complete. { return m_complete; } slice_m& Piece::MapRequested (  )  [inline] Definition at line 129 of file Piece.h. References m_requested. { return m_requested; } Piece& Piece::operator= ( const Piece &   )  [inline, private] Definition at line 133 of file Piece.h. { return *this; } // assignment operator Member Data Documentation size_t Piece::m_nr [private] Definition at line 135 of file Piece.h. Referenced by GetNumber(). size_t Piece::m_piece_length [private] Definition at line 136 of file Piece.h. Referenced by AllRequested(), Complete(), GetRandomNotRequested(), NumberComplete(), NumberOfSlices(), NumberRequested(), and PieceLength(). slice_m Piece::m_complete [private] Definition at line 137 of file Piece.h. Referenced by ClearComplete(), Complete(), MapComplete(), and SetComplete(). slice_m Piece::m_requested [private] Definition at line 138 of file Piece.h. Referenced by ClearRequested(), MapRequested(), Requested(), and SetRequested(). The documentation for this class was generated from the following files: Piece.h Piece.cpp

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