Hi All, Greetings for the day. I am trying to understand the behavior of Boost's binary serializer(Boost version 1.65). Please consider the below example, where I am inserting one record into the file, and trying to read the same record 5 times. #include #include #include #include <fstream> #include <iostream> using namespace std; using namespace boost::archive; class logEntry { private: size_t m_txID; string m_jsonStr; friend class boost::serialization::access; template <typename Archive> friend void serialize( Archive &ar, logEntry &l, const unsigned int version ); public: logEntry() { m_txID = 0; m_jsonStr = ""; } logEntry( size_t id, const string &val ) { m_txID = id; m_jsonStr = val; } string getJsonValue() { return m_jsonStr; } size_t getTxId() { return m_txID; } }; template <typename Archive> void serialize( Archive &ar, logEntry &l, const unsigned int version ) { ar &l.m_txID; ar &l.m_jsonStr; } size_t prevReadPos = 0; void save( size_t n ) { ofstream file{"/tmp/test.bin", ios::binary | ios::trunc}; binary_oarchive oa{file}; // Save n records for ( int i = 0; i < n; i++ ) oa << logEntry( i, "{Some Json String}" ); file.flush(); file.close(); } // Load data batch wise void load( size_t bsize ) { ifstream file{"/tmp/test.bin", ios::binary}; binary_iarchive ia{file}; // Record file length size_t fileEnd; size_t beg = file.tellg(); file.seekg( 0, ios::end ); fileEnd = file.tellg(); file.seekg( beg, ios::beg ); logEntry l; for ( size_t i = 0; i < bsize; i++ ) { * ia >> l;* * // Reset the file read position to the beginning of the file to read the same line one more time* * file.seekg( beg, ios::beg );* } prevReadPos = file.tellg(); file.close(); } int main() { // Saving only one record save( 1 ); while ( 1 ) { // Trying to read the same record 5 times load( 5 ); sleep( 5 ); } }

From the above code, I am able to read the record one time and whenever I re-set the file pointer back to the beginning of the file, the program "Crashes with SIGKILL". And also, I observed that this process it consumed around *90GB *of memory(I got this reading from xCode while debugging the code).

My dev environment is as below. clang --version Apple LLVM version 8.0.0 (clang-800.0.42.1) Target: x86_64-apple-darwin15.6.0 Thread model: posix InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin Kindly let me know if you need any more information from my side. -- Regards, Dinesh manojadinesh.blogspot.com