@@ -1 +0,0 @@ -Don't write index when file opened read-only. TODO @@ -577,6 +577,12 @@ void Compress::storeLayerMap() { rDebug("%s: m_fd: %d", __PRETTY_FUNCTION__, m_fd); + // Don't store LayerMap if it has not been modified + // since begining (open). + + if (!m_lm.isModified()) + return; + io::nonclosable_file_descriptor file(m_fd); file.seek(m_RawFileSize, ios_base::beg); src/Compress.cpp @@ -15,6 +15,7 @@ std::ostream &operator<<(std::ostream &os, const LayerMap &rLm) os << std::hex; os << "-- m_MaxLevel: 0x" << rLm.m_MaxLevel << ", m_MaxLength: 0x" << rLm.m_MaxLength << + ", m_IsModified: " << rLm.m_IsModified << " -------" << std::endl; for (LayerMap::con_t::const_iterator it = rLm.m_Map.begin(); it != rLm.m_Map.end(); ++it) @@ -42,6 +43,8 @@ void LayerMap::Put(Block *pBl, bool bKeepLevel) if (m_MaxLength < pBl->length) m_MaxLength = pBl->length; + m_IsModified = true; + // cout << "State after Put: " << endl << *this << endl; } @@ -67,6 +70,9 @@ void LayerMap::Truncate(off_t offset) } ++it; } + + m_IsModified = true; + // std::cout << "State after Truncate: " << std::endl << *this << std::endl; } src/LayerMap.cpp @@ -38,6 +38,7 @@ private: con_t m_Map; unsigned int m_MaxLevel; unsigned int m_MaxLength; + bool m_IsModified; void next(off_t offset, con_t::const_iterator &it) const; unsigned int length(con_t::const_iterator &it, off_t offset) const; @@ -55,7 +56,8 @@ private: public: LayerMap() : m_MaxLevel(1), - m_MaxLength(0) + m_MaxLength(0), + m_IsModified(false) {} ~LayerMap() { @@ -65,6 +67,7 @@ public: { m_MaxLevel = src.m_MaxLevel; m_MaxLength = src.m_MaxLength; + m_IsModified = src.m_IsModified; for (con_t::iterator it = m_Map.begin(); it != m_Map.end(); ++it) delete(*it); @@ -106,6 +109,8 @@ public: return true; } + bool isModified() const { return m_IsModified; } + friend std::ostream &operator<<(std::ostream &os, const LayerMap &rLm); }; src/LayerMap.hpp 054573c8e56ef6cd2ac8e40b80e7ac4d6935081e Milan Svoboda milan.svoboda@centrum.cz http://github.com/tex/fusecompress/commit/37419d85b3ddec08dd1973e22a63454b8abb246c 37419d85b3ddec08dd1973e22a63454b8abb246c 2008-11-28T01:51:21-08:00 2008-11-27T08:22:40-08:00 Don't write LayerMap if file has not been modified since begining (open). 76b5366f60986aa6acca4bf2c9c3c6e81c5a2656 Milan Svoboda milan.svoboda@centrum.cz